满洲里What is the application of diamond micro-powder in 3D printing?

Diamond micro-powder is mainly used in 3D printing to prepare high-performance diamond composite materials and tools. By combining with matrices such as resins and metals, it can achieve high-precision molding of complex structures and significantly enhance the hardness, wear resistance and thermal conductivity of the materials. The following is the specific application analysis:

Diamond micro-powder features super-hardness, wear resistance, and high thermal conductivity. In 3D printing, it can be combined with matrices such as resins and metals to prepare high-performance diamond composite materials and tools. For instance, by using light-curing 3D printing technology, nano or micron-sized diamond micro-powder can be mixed with photosensitive resin to print diamond composite material parts with high hardness and wear resistance, which are suitable for manufacturing precision grinding tools, cutting tools, etc. In addition, diamond micro-powder can also be used for 3D printing of metal-based rigid carbide composites. By using technologies such as selective laser melting (SLM), diamond micro-powder can be mixed with metal powder for printing, resulting in composite materials that combine the toughness of metals with the hardness of diamonds. These materials can be used to manufacture wear-resistant parts, heat dissipation components, etc.

In specific applications, the particle size, concentration of diamond micro-powder and its bonding mode with the substrate have a significant impact on the printing effect. For instance, when preparing diamond grinding tools, the appropriate diamond particle size should be selected based on the hardness of the processing material, and the uniform distribution of diamond micro-powder in the matrix should be ensured by optimizing printing parameters (such as laser power and scanning speed) to avoid thermal damage. Meanwhile, to enhance the bonding strength between diamond and the matrix, surface modification treatment is often carried out on diamond micro-powder, such as silane coupling agent modification, to strengthen its interfacial bonding force with resins or metals.

The application of diamond micro-powder in 3D printing still faces some challenges, such as the thermal damage of diamond particles during the printing process and the densification control of composite materials. To address these issues, researchers are exploring new printing processes and material systems, such as using low-temperature 3D printing technology to reduce thermal damage to diamond, or improving the density and mechanical properties of composite materials by adding nanoparticles.