New applications and developments
Through the research and analysis of the development and application of diamond tools, it is shown that the application of coated diamond tools is of great significance to the development of diamond tools.
Application and progress of coated diamond tools Diamond coating is to coat a layer of affinity metals (Ti, Cr, W, Mo, etc.) on the surface of diamonds. These affinity metal coatings can form strong chemical bonds with diamonds. Combined, the metal coating can be brazed with the metal carcass. Thus, the combined effect of the plating layer is to form a "chemical/metallurgical bond" with the diamond and the matrix. Plating technology first started in the 1970s, and was re-recognized and developed in the 1990s. Its advantage is that the coating layer forms a chemical bond with the diamond, and forms a brazed bond with the surrounding matrix to improve the holding force between the diamond tool matrix and the diamond. Using titanium-plated diamond, under the diamond concentration of 23%, make a Y 400 saw blade in the cobalt matrix, and saw the granite. Compared with uncoated diamond saw blades, under the same life conditions, the sawing efficiency is increased by 50%. The diamond is plated with different metals, and then X-ray diffraction analysis shows that various carbides are formed on the surface of the diamond, resulting in new chemical bonds, such as TiC, Cr3C2, Cr7C3, WC, W2C, MoC, Mo2C, etc. The diamond holding force is improved, and the diamond particles and the matrix metal form a "chemical/metallurgical bond", which increases the bonding strength between the diamond and the matrix, and can resist oxidation and graphitization of the diamond, improving the service life of the diamond tool. Diamond tool performance
