As a super-hard abrasive, diamond powder has the incomparable, superior grinding ability, and developed countries have paid it more and more attention. The grinding capacity of the diamond powder includes the ability to grind the workpiece and its wear resistance and crush resistance, which depends on its microhardness, particle size, strength, particle shape, and thermal and chemical stability.
In summary, the application of diamond powder as an abrasive has three aspects:
(1) Used in manufacture of the resin bonding tool, metal bonding tool and electroplating tool;
(2) Used for the fine grinding or polishing of various precision components in industry, science and medicine;
(3) Used as a fine abrasive for mould processing, gemstone polishing, gemstone bearing processing and manufacturing.
In addition to the application of diamond powder as an abrasive material, another important use is as a functional material. For example, use its thermal and electrical properties. By mixing micro-diamond powder with thermosetting resin polymer, cellulose, phenolic resin or ceramic sheet, a new material with the improved thermal conductivity and reduced thermal expansion can be made. Mixing diamond powder into metal sheets, such as nickel sheets or stainless steel sheets, can be made into new sheet materials with high thermal conductivity, low thermal expansion and lightweight. In the electronics industry, it can be made into high-density and high-energy devices for thermal control.
As to the form of diamond used as abrasive material, according to the figures published by relevant data, more than 60% of the diamond powder consumed in the industry in the world is used to make a diamond paste, diamond powder mixture and diamond powder slurry.