As a kind of superabrasive, diamond micropowder has incomparably superior grinding ability, and has been paid more and more attention by industrialized countries. The grinding ability of diamond micropowder includes the ability to grind the workpiece and its own wear resistance and anti-crushing ability, which depends on its microhardness, particle size, strength, particle shape, thermal stability and chemical stability.
In summary, the application of diamond micropowder as an abrasive has three major aspects:
(1) For the manufacture of resin bonded tools, metal bonded tools and electroplating tools;
(2) Used for fine grinding or polishing of various precision components in industry, science and medicine;
(3) Used as a fine abrasive for mold processing, gemstone polishing, and gemstone bearing manufacturing.
The application of diamond powder is not only used as abrasive material, but also used as functional material. For example, using its thermal properties and electrical properties. A new material with improved thermal conductivity and reduced thermal expansion can be made by mixing diamond micropowder into thermosetting resin polymer, cellulose, phenolic resin or ceramic sheet. Mixing diamond micropowder into metal sheets, such as nickel sheets or stainless steel sheets, can make new sheet materials with high thermal conductivity, low thermal expansion and light weight, and can be made into high-density and high-energy devices for thermal control in the electronics industry .
From the form of diamond used as abrasive material, according to the figures published by the relevant information, more than 60% of the diamond powder consumed in industry in the world is used to make diamond paste, diamond powder mixture and diamond powder grinding fluid.
