Molybdenum disulfide has been widely used in electronic devices, catalysts, and biomedical fields, due to the special layered structure and the unique properties. The lubrication performance, photoelectric performance, and catalytic degradation properties of molybdenum disulfide were briefly reviewed in this paper, the application and research status of molybdenum disulfide in lithium-ion batteries, supercapacitors, biomedicine, biosensors, and photocatalysis fields were introduced, and the future development trend of molybdenum disulfide is proposed based on the research background and development status.

The foamed metals have become the new structural functional materials with the excellent properties of heat, sound, light weight, and energy absorption. Known as the “metal star”, the porous aluminum foam is the most popular foam metals with the most potential application, showing the excellent performance as low density, high temperature resistance, good corrosion resistance, non-flammable, good weather resistance, low thermal conductivity, high electromagnetic shielding, high energy absorption, and good noise reduction, which is widely used in the automobile industry, the aeronautics and astronautics industry, and the construction industry. In this paper, the structural characteristics and physical properties of the aluminum foams are reviewed, and the preparation, process principle, and characteristics of the aluminum foams are summarized.

Thermal barrier coatings (TBCs) can effectively improve the operation temperature and service life of aero-engine hot end components. At present, yttria-stabilized zirconia (YSZ) is the most widely used thermal barrier coating materials. Phase transformation of YSZ occurs when the service temperature is higher than 1200℃, which seriously affects the service life and service safety of the aero-engines, and it is difficult to meet the service requirements of new generation of aero-engines. The investigation on the advanced thermal barrier coating materials (TBCs) was summarized in this paper. The research progress of several novel thermal barrier coating candidates were mainly reviewed, such as multiple oxide co-droped YSZ, A₂B₂O₇-type compounds, perovskites, magnetoplumbite compounds, and new bond coating materials. The preparation principles and advantage-disadvantage of thermal barrier coatings were discussed. At last, the development direction of thermal barrier coating materials and preparation technology were also proposed.

Metal powder injection molding (MIM) can be used to manufacture the high performance precision parts with the special shape in large quantities and low cost, which is regarded as one of the research hotspots in the field of the advanced manufacturing technology. The MIM technology was summarized in this paper, including the powder preparation, the binder selection, the mixing, the injection, and the subsequent debinding and sintering. The development, status, and new technology of MIM were introduced, the numerical simulation of MIM was deeply analyzed, and the development trend of MIM was prospected.

With an excellent combination property of low density, high specific strength, fantastic bio-compatibility, and good corrosion resistance, titanium and titanium alloys are becoming promising materials in the field of aerospace, bio-medical, chemical industry, automobile, etc. Metal injection molding (MIM) can realize small and medium-sized products of titanium and titanium alloys with complex shape by low cost and mass production, which makes the MIM technique have the great significance in promoting the development and application of titanium and titanium alloy products. In this paper, the main characteristics and advantages of titanium and titanium alloys fabricated by MIM were briefly introduced. The recent research progresses on MIM of titanium and titanium alloys were reviewed, especially in terms of feedstock powders, binder systems, injection molding, debinding, and sintering processes. Finally, in view of the existing problems, the further development and research direction on metal injection molding of titanium and titanium alloys were investigated.

Mo-Re-La alloys were prepared by solid-liquid doping method through adding La₂O₃ nanoparticles into Mo-Re alloys. Microstructures and mechanical properties of Mo-Re-La alloys, Mo-Re alloys, pure Mo were investigated. The results show that, the fine grain size strengthening of Mo-Re alloys is obvious by adding Re element into pure Mo in low mass fraction of 3.5%, and the Mo-Re-La alloys are further refined and strengthened by doping La₂O₃ nanoparticles into Mo-Re alloys.

Additive manufacturing can produce the arbitrary complex shape parts, which has the advantages of fast, efficient, economical, fully intelligent, and fully flexible manufacturing. Based on the introduction of the typical metal additive manufacturing technology at home and abroad, the application of the metal additive manufacturing technology in the field of nuclear industry was overviewed in this paper, the performance of nuclear material products prepared by the additive manufacturing was summarized, and the advantages of the metal additive manufacturing in the field of nuclear industry were proved by the practical cases. At the same time, the development trend of the additive manufacturing technology in the field of nuclear materials was forecasted based on the application background of the innovative reactor technology for the nuclear materials.

The fabricating processes of the high-entropy alloys (HEAs) fabricated by the laser additive manufacturing were briefly introduced in this paper. The recent research progresses on the laser additive manufacturing of HEAs were reviewed, especially in terms of forming process, element content (molar fraction), heat treatment process, and enhanced phase. Laser melting deposition (LMD) and selective laser melting (SLM) processes were compared and analyzed, and the microstructure and mechanical properties of HEAs fabricated by LMD and SLM were investigated. Finally, the development trend and the major problems of HEAs prepared by the laser additive manufacturing were point out, and the improvement measures were proposed.

Development and preparation of heat conducted resin composites filled with hexagonal boron nitride (hBN) used in electrical and electronics field were studied. The mechanism and model of thermal conductivity were introduced. The effects of morphology, particle size, particle mixing, and surface modification of hBN filler on the resin composites were discussed. Finally, the prospect of the resin composites filled with hBN was proposed.

Graphene is used as an ideal reinforcement in composites, due to its characteristic structure and superior physicalchemical properties. The preparative technique of aluminum matrix composites reinforced by graphene, especially the dispersion of graphene and the forming of composites, were overviewed in this paper. Effect of preparation method on aluminum matrix composites reinforced by graphene was also discussed. New powder blending and sintering method for the preparation of graphene/aluminum matrix composites was proposed.

With the increasing power of the electronic device chip, the higher requirements are put forward for the thermophysical properties of the heat dissipation materials. The metal matrix composites as the ideal heat dissipation material, which are composed of the high thermal conductivity and low thermal expansion reinforcement phase and the high thermal conductivity metal, show the high thermal conductivity and the adjustable coefficient of thermal expansion. The research progress of the copper matrix and aluminum matrix composites reinforced by Si, SiC_p, diamond, and flake graphite in recent years was summarized in this paper, and the existing problems and future research direction of the metal matrix composites were prospected.

The progress and prospect on the sintering techniques of molybdenum and molybdenum alloys were summarized in this paper, including sintering theory, sintering equipment, and sintering processing parameters, and new sintering techniques. In the results, the sintering theory of molybdenum and molybdenum alloys still focuses on the traditional theory of powder metallurgy. The development of sintering technology is to obtain the fully densified, fine crystal, and homogenized sintered billets. The tendency of sintering technology is the closely combination of sintering equipment and tooling with new powder metallurgy technology, resulting in more cross-research. Fully densification, microstructure homogenization, fine crystallization, and precise shapes controlling of sintered complex shapes molybdenum products during the sintering processing of large molybdenum and molybdenum alloys billets will be the hot and difficult points on the studies of molybdenum and molybdenum alloys sintering techniques.

Application of pure molybdenum is extremely limited due to the shortcomings of high ductile-brittle transition temperature, embrittlement after recrystallization, and deficient performance on high-temperature oxidation resistance. However, by adding a second phase (rare earth oxide (La₂O₃, Ce₂O₃, and Y₂O₃) and carbide (TiC, ZrC, and HfC)) to form molybdenum alloy, the properties of molybdenum get significantly improved, which arouses the wide attention domestically and abroad. The preparation technology of molybdenum alloy (solid-solid doping, solid-liquid doping, and liquid-liquid doping) was summarized and the development tendency was illustrated in this paper. The results show that the liquid-liquid doping process can significantly improve the homogeneity and mechanical properties of materials.

The large-diameter forged rods of pure tungsten and tungsten-lanthanum alloys were fabricated from micron-scale tungsten powders doped by nanometer-scale lanthana powders in different contents by mass, the ambient mechanical properties of the sintered billets and forged rods were characterized, and the recrystallization behaviors of pure tungsten and tungsten-lanthanum alloys doped by 1.0% lanthana by mass were investigated. The results show that, with the increase of lanthana content from 1.0%, 1.5%, to 2.0% by mass, the doped tungsten-lanthanum alloys show higher densities, greater crystal numbers, well-distributed lanthana particles, and uniform particle sizes in the matrix. After large deformation of 78.7%, the forged alloyed rods doped by 1.0% lanthana show higher harness values and finer crystal fibers in the matrix than the pure tungsten rods, as well as better machining performance, resulting in longer machined scraps, lower roughness, and higher recrystalization temperatures by~150℃.

Metal additive manufacturing technology is now developing in the direction of industrialization, and the titanium powders are one of the mainstream raw materials used for metal additive manufacturing. The smelting technology of titanium and its alloys was summarized in this paper, the induction smelting was emphasized, and the main technology of titanium powder preparation was analyzed and compared, including the basic principles, the characteristics, and the factors affecting the powder characteristics. In addition, the application of numerical simulation on the titanium powder preparation was also introduced, and the development of titanium powder preparation technology used in the field of metal additive manufacturing was prospected.

The research progress on the microwave sintering mechanism of metal powders was reviewed in this paper from the aspects of the electromagnetic effect on metal powders in microwave field and the sintering behavior of metal powders in microwave field. In the electromagnetic effect, the influences of thermal effect and non-thermal effect on sintering behavior were introduced, respectively. The thermal effects of sintering mainly included the electromagnetic power loss caused by microwave heating and the electromagnetic focusing phenomenon. The non-thermal effects mainly included the microwave discharge effect and the magnetic effect. In the sintering behavior, the material migration mode and the growth mechanism of sintering neck during the growing process were reviewed, the material migration mode was influenced by the material type and process parameter, and the growth of sintered neck was closely related to the temperature field and electromagnetic field. Based on the review of current research progress, the shortcomings and deficiencies were analyzed, and the future research direction of the microwave sintering mechanism was also proposed.

With the quantity production of the powder metallurgy parts with the excellent comprehensive performance and complex shape, the computer simulation technology is widely used in powder metallurgy process to reduce the product cost, improve product quality, and shorten the development cycle. Several simulation software (Abaqus, Deform, Ansys, Comsol, and MSC.Marc) were introduced in this paper, which are widely used in powder metallurgy field at present. The advantages and disadvantages of the simulation software were compared. The application and selection for the simulation software in the actual production practice were also discussed. The expectation and development of the computer simulation software in powder metallurgy field in the future were put forward.

Aluminum nitride has been widely applied for the high thermal conductivity and insulating properties. Nowadays, the global aluminum nitride application market is in the high growth stage as well as the demand for aluminum nitride is growing continuously. Aluminum nitride powders are the critical raw materials for the synthesis of aluminum nitride ceramics, and the properties of the aluminum nitride powders dominate the properties of the aluminum nitride ceramics. In the paper, the preparation methods of micrometer- and nanometer-sized aluminum nitride powders have been compared. Moreover, the future research directions and development trend of preparing aluminum nitride powders have been pointed out.

Molybdenum and molybdenum alloy sputtering target materials have been widely used in the fields of electronic industry, solar cell, and glass coating because of their high melting point, good thermal and electric conductivity, low thermal expansion coefficient, good corrosion resistance, and environmentally friendly performance. The basic requirements and preparing methods were introduced in this paper firstly. The main research status of Mo, Mo-Ti, Mo-Na, and Mo-Nb at home and abroad was systematically reviewed, and the development trend of molybdenum and molybdenum alloy sputtering target materials was presented.

The preparation technologies of high density iron based powder metallurgy products used in NBTM were introduced in this paper, including warm compaction, warm die compaction, double-pressing and double-sintering, and the advantages and disadvantages of these technologies were discussed. Although the preparation technologies described in this paper can improve the density and strength of powder metallurgy parts to a high level, the precision and roughness of the parts cannot meet the requirements of high-level applications, and the further machining is still needed. For the iron-based powder metallurgy parts, the precision of powder metallurgy die manufacturing, the powder characteristics, and the process stability are still needed to improve in the future, and the new sintered iron based parts preparation technology with low-cost, high-precision, and high-strength should be developed.

As one of the new technologies for the high-performance complex metal components, the additive manufacturing technology has been used in the aerospace, automotive industry, medical, and nuclear powder fields. The metal additive manufacturing processes involve the complex physical phenomena such as heat transfer, thermal, phase transition, and flow. Numerical simulation methods in the different scales and cross-scales combined with the experimental verification can realize the understanding, control, and optimization of the complex physical phenomena in the additive manufacturing process, which can provide the strong support for the forming of high-quality, high-precision, and high-performance metal components. The numerical simulation of metal additive manufacturing processes in the macro, mesoscopic, micro, and multi-scale was reviewed in this article. The numerical simulation methods of temperature field, thermal stress field, powder bed, molten pool flow, and solidification behavior process were described. Finally, the development trend of the numerical simulation methods for the additive manufacturing was prospected.

The research and development of particle-reinforced magnesium matrix composites prepared by powder metallurgy were summarized in this paper, the substrate and the micron-scale/nanoscale reinforcements commonly used for the particle-reinforced magnesium matrix composites were introduced. The powder metallurgy process was systematically described, including the pretreatment process of reinforcements, the molding process of mixed powders, and sintering process. The influence of powder metallurgy technology on the microstructure and mechanical properties of the composite was investigated, including the interface bonding between reinforcement and matrix and the particle reinforcement strengthening mechanism. Finally, the development prospect for the preparation of the particle-reinforced magnesium matrix composites by powder metallurgy was expected, and the improvement measures were proposed.

Titanium and titanium alloys have the low specific gravity, high specific strength, excellent biocompatibility, and good corrosion resistance, showing the great application potential in the aerospace, biomedicine, chemical engineering, shipbuilding, automobile, and other fields. The powder injection molding (PIM) technology used for titanium alloys increases the utilization rate of materials, realizes the large-scale and low-cost preparation of small and medium-sized titanium products with complex shape, and significantly promotes the development of titanium and its alloys. At present, there are few reports about the titanium alloy binder system for powder injection molding, and the development of new type titanium alloy binder system for powder injection molding is in a stagnating state. The research status of the different titanium alloy binder systems for powder injection molding was introduced in this paper, and some improvements for the existing problems were suggested as the reference for researchers.

3D printing, also known as additive manufacturing (AM), is a technology that uses 3D design data to build physical parts by adding materials layer by layer. With the application of information technology and intelligent control to 3D printing technology, the 3D printing technology is becoming more and more mature and commercialized gradually. The rapid development of manufacturing technology often requires the rapid follow-up of design technology. Topology optimization method has become an important tool for the structural innovative design because it is independent of the initial configuration and the engineer experience and can obtain completely unexpected innovative configurations. Embedded technology is a device or system that is controlled by an internal computer and performs a special function. Compared with the general purpose computer systems, the embedded systems have the advantages in 3D printing, such as low power consumption, powerful functions, strong real-time performance, multi-task support, small space occupation, and high efficiency, and the specific applications can be customized according to the needs of flexible. The application of topology optimization design and embedded digital technology in 3D printing was summarized in this paper, the application cases of topology optimization and the mainstream software of topology optimization were introduced, the application advantages and cases of the embedded technology in 3D printing were analyzed, and the future topology optimization design and the application of embedded digital technology in 3D printing were prospected.

Selective laser melting (SLM) technology has been widely applied in the industry due to its customization, short manufacturing cycle, and high precision. The research progress of aluminum alloys and composites prepared by SLM was systematically reviewed. The advantage of SLM aluminum alloys was introduced though the SLM characterization. The research of SLM casting Al?Si series alloys was discussed, and the microstructure, phase composition, and mechanical properties was revolved, combining with the scanning strategy and laser parameter optimization. Meanwhile, the investigation of SLM nano/micro reinforced aluminum alloys was also present, the particle reinforcement mechanism on the microstructure, relative density, wettability, and mechanical properties was analyzed. On the other hand, the research progress of new high strength aluminum alloys prepared by SLM was also discussed, the strengthening mechanism, relative density, and mechanical properties were emphasized. Finally, the development trend of SLM aluminum alloys and the current problems were prospected.

316L stainless steel powders used in 3D printing were prepared by a vacuum inert gas atomization (VIGA) system in this paper. The effects of atomization pressure on the chemical composition, particle size distribution, sphericility, surface morphology, flowability, and apparent density of 316L stainless steel powders were investigated. The results show that under the certain process parameters (melting at (1560 ±20)℃, holding for 20 min, tundish temperature at (1050 ±30)℃, and N₂ atomization at 3 MPa), the high quality 316L stainless steel powders can be obtained, which can be used for different 3D printing techniques. The characteristics of powders are summarized as the oxygen content of 0.08% by mass, the medium diameter (D₅₀) of 31.39 μm, the sphericility of 0.75, the fluidity of 21.56 g/(50 s), and the loose packed density of 3.88 g/cm³.

Based on the parameters of minimum ignition energy (MIE), minimum ignition temperature of dust cloud (MIT_C), and minimum ignition temperature of dust layer (MIT_L), the explosion sensitivity and influence factors of the typical metal powders used in additive manufacturing were investigated. The experimental results show that, the explosive sensitivity of nickel alloy powders and stainless steel powders is lower, while the explosive sensitivity of the titanium alloy powders is slightly higher than that of the aluminum alloy powders. The order of powder explosive sensitivity is as TA15>TC4>AlSi10Mg>316L>GH4169>GH3536>GH3625/304L. The results also show that, both nickel alloy powders and stainless steel powders could not be ignited. The MIE and MIT_C of titanium alloy powders and aluminum alloy powders decrease first and then increase with the increase of dust concentration, while decrease first and then increase with the increase of dust spraying pressure.

Two kinds of Al–5Ti–1B alloys were prepared by powder mixing + hot extrusion and powder mixing + gas atomization + hot extrusion, respectively. The microstructures of the Al–5Ti–1B alloys prepared by two kinds of processes were studied, and the grain refinement properties were assessed. The results show that, the TiB₂ particles can be uniformly distributed and the growth of TiAl₃ phase can be inhibited by these two kinds of processes. The Al–5Ti–1B alloys with the mass fraction of 0.2% are added to the melt of 7050 aluminum alloys. The grain refinement effect of the Al–5Ti–1B alloys prepared by powder mixing + hot extrusion is not obvious, and the grain size of 7050 aluminum alloys is still up to 1400 μm. The grain refinement effect of the Al–5Ti–1B alloys prepared by powder mixing+ gas atomization + hot extrusion is very good, the average grain size of 7050 aluminum alloys is only 176 μm. According to this experimental phenomenon, a new explanation for the grain refinement and double nucleation mechanism of the Al–Ti–B alloys is proposed.

Particle-reinforced titanium-based composites are widely used in aerospace, automotive, and medical engineering due to their high strength, light weight, corrosion resistance, and excellent high temperature mechanical properties. The development overview and research results of titanium-based composites in domestic and international were introduced in this paper. The matrix composition of titanium-based composites, the morphology and physical properties of particle reinforcement materials, the introduction method of reinforcement, the preparation process, and the mechanical properties of the composites were described. Especially, the process characteristics and material properties of the particle-reinforced titanium-based composites prepared by the different powder metallurgy methods were discussed, and the propose prospects for the further research on titanium-based composites were expected.

The research progress of the molybdenum-based composites prepared by powder metallurgy (PM) technology was summarized in this paper, the common reinforcements of the molybdenum-based composites and the effects of the reinforcements on the properties of the molybdenum-based composites were introduced. The preparation technology of the molybdenum-based composites were emphatically described, including the technology of preparing molybdenum powders, the method of preparing composite powders, and the technology of powder forming and densification. The advantages-disadvantages and effects of the preparation technology on the molybdenum-based composites were studied. The problems existing in preparing the molybdenum-based composites by PM were summarized, and the development directions of the molybdenum-based composites by PM were prospected.

Cu?5%Fe alloys (mass fraction) were prepared by cold isostatic pressing, sintering, and rolling, using the elemental mixed powders, mechanical alloying powders, and water-gas combined atomized alloy powders as the raw materials. The powder morphology, microstructure, mechanical properties, and physical properties of the copper-iron alloys fabricated by the three kinds of raw materials were compared. The results show that, the iron particles are uniformly distributed, and the average size of the iron particles in the sintered body consisted of the powders by element mixing, mechanical alloying, and water-gas combined atomization are 9.4 μm, 1.2 μm, and 3.5 μm, respectively. The alloys with the water-gas combined atomization powders show the best overall performance as the tensile strength of 550 MPa, the electrical conductivity of 59.5% IACS, and the magnetic saturation strength of 9.1 emu·g^?1.

High-quality metallic powders are essential for the selective laser melting (SLM) technology. The powder characteristics are indispensible for the understanding of SLM technology. The influences of powder physical and chemical characteristics on SLM processing, component microstructure, and mechanical properties were reviewed in this work. For the physical properties, the powder morphology and powder size distribution could significantly influence the powder flowability and powder-bed packing density, which were vital for the subsequent laser melting. On the other hand, the chemical compositions, especially the contents of impurities, determined the phase constitutes and microstructures. Furthermore, the recent progress on the interaction between laser and powder and the corresponding metallurgical mechanism were also introduced.

Additive manufacturing technology breaks through the limitations of traditional mold processing technology, and it is an important method for the efficiently customizing biomedical materials. Recently, the personalization needs of medical bone repair and transplantation have increased significantly. The customized and individualized advantages gradually promote the additive manufacturing technology to play an important role in the field of biomedical materials. With the development of materials science and computer aided technology (CAD/CAM), the biological implant materials used for additive manufacturing are no longer limited to the alloys such as titanium alloys, tantalum alloys, and vitallium. Because of good biocompatibility, the non-metal materials such as polyetheretherketone (PEEK) and calcium phosphate are widely used in biomaterials. The preparation of artificial bone implants by additive manufacturing technology has become a new research hotspot. The principle of additive manufacturing technology was reviewed, and the manufacturing techniques by laser, electron beam, and photocuring were compared in this paper. The application status of additive manufacturing in biological implants and medical devices was introduced, and the development prospects of additive manufacturing technology in medical field were prospected.

The discrete element model of the compression molding process was established by the EDEM discrete element software to optimize the process of NdFeB powders compression molding. The effects of the different molding conditions (pressing speed and friction coefficient) on the mechanical characteristics of the green pressing (compression force and pressing internal stress) were analyzed to provide the reference for the optimizing of the molding parameters. The results show that, the position of NdFeB powders is the same as that at the time of powder distraction during the molding process, but the powders near the die-stamping area displace greatly. The stress relaxation phenomenon occurs at the molding of green pressing. It is worthy noticing that the pressing speed has the different effects on the peak force of compression, but eventually it will converge to a similar stable value. The addition of lubricant can improve the internal stress state of the green pressing, reduce the compression force, and decrease the relative density of the green pressing. For the large-scale green pressing, the two-directional pressing should be adopted.

Selective laser melting is one of the most promising 3D printing technologies in the field of fine laser rapid prototyping. However, the rapid heating and solidification in the printing process result in the defects, such as pores and cracks. To obtain the printing materials with excellent performance, the influence factors on the porosity of 3D printing metal materials prepared by selective laser melting technology were introduced in this paper, including laser power, scanning rate, ambient atmosphere, and nanometer powder composite doping. The subsequent treatments were discussed to reduce the porosity, such as heat treatment and plastic deformation.

The preparation processes of aluminum matrix boron carbide composites made by powder metallurgy are summarized,those mainly include mixing, pressing, sintering, deformation, et al. The main performance of Al-B₄C composites and its in fluence factors are introduced. The uniformity, relative density and mechanical properties of the material are studied. The production and application of Al-B₄C composites are also introduced. The characteristics of several types of Al-B₄C composites are described. The process optimization scheme is set forth to produce large size, high quality and low cost Al-B₄C composites by powder metallurgy.China is expected to become one of the production and research centers of Al-B₄C composites, with the development of nuclear power and other related industries.

Mo–Na alloys were prepared by the hot isostatic pressing (HIP) sintering. The effects of HIP sintering temperature on the microstructure, hardness, density, and Na mass fraction of the Mo–Na alloys were studied. The densification process of the Mo–Na alloys sintered by HIP was analyzed. The results show that, the microstructure of the Mo–Na alloys prepared by HIP sintering is ultrafine and uniform, the average grain size of the alloys is below 10 μm. With the increase of the HIP sintering temperature, the relative density and hardness increase and reach the maximum value at 1100 ℃, which is 99.58% and HRA 54.50, respectively. The liquid phase formation during HIP plays an important role in the densification of the Mo–Na alloys. The volatilization of the Na metals with the low melting point during the high temperature sintering is well avoided in the process of HIP, and the Na mass fraction is almost unchanged after sintering at 1100 ℃.

Nanodiamond has the dual characteristics of the diamond and the nano-materials. Due to the sp³/sp² hybrid structure of core and surface and the abundant surface dangling bonds and functional groups, the nanodiamond shows the broad application in the fields of lapping and polishing, antifriction and lubrication, composite material reinforcement, drug delivery, and fluorescence absorption. The nanodiamond particles agglomerate in hundreds of nanometers and need to be dispersed into the different liquid phase systems by various means. The research on the dispersion methods of the nanodiamond was summarized at home and abroad in this paper, and the principle and characteristics of the dispersion methods as the mechanical method, the inorganic chemical method, the high energy field treatment, and the surface organic chemical modification were analysed.

Graphene has become one of the most potential reinforcing materials because of the unique two-dimensional structure and the excellent thermal, electrical, and mechanical properties. In this paper, the preparation of the aluminum-graphene composites was reviewed. The influence factors on the mechanical properties and conductivity performances of the aluminum-graphene composites were introduced. Subsequently, the applications of the aluminum-graphene composites in the field of high strength and high conductivity materials were investigated. Challenges on the preparation of high quality graphene powders, the scale production of mixing powders, and the continuously processing method in the industrialization were discussed. The possible technological methods for the industrialization of aluminum-graphene composites and the potential research directions were proposed.

As the commonly used long afterglow luminescent material matrix, Sr₂MgSi₂O₇ shows the stable performance and the superior acid and alkali resistance. The luminescence principle of long afterglow luminescence material was introduced in this paper, the preparation methods of Sr₂MgSi₂O₇ long afterglow luminescent materials were summarized, the rare earth doped Sr₂MgSi₂O₇ materials were reviewed, and the development of the materials were prospected. The preparation methods of Sr₂MgSi₂O₇ long afterglow luminescent materials include the high temperature solid state method, sol-gel method, chemical precipitation method, and chemical precipitation method, the most common method is the high temperature solid phase method. The long afterglow luminescent materials with different luminescence characteristics can be formed by doping rare earth ions. The rare earth doped Sr₂MgSi₂O₇ long afterglow luminescent materials for energy storage and energy conservation are present the broad development and application prospects.