How Much Do You Know About the Classification of Superabrasives?

Regardless of how the supeabrasive is defined, it is commonly agreed that the supeabrasive mainly refers to diamond abrasives, cubic boron nitride abrasives and other relevant materials.

1. Diamond abrasive

Diamond is the hardest substance known in nature, and it has very high thermal conductivity, relatively large band gap and high dispersion rate. 

These excellent physical properties make diamond abrasives indispensable in industrial cutting, heat conduction equipment manufacturing, optical device manufacturing, and electronic equipment manufacturing. The excellent properties of diamond, especially the super hardness, come from its electronic state hybridization, which makes the four valence electrons participate in the bond formation, forming a three-dimensional covalent bond network. Diamond abrasive powder is available at Henan E-Grind.

2. Cubic Boron Nitride Abrasive

The cubic boron nitrogen structure, parallel to diamond, also has high hardness because it also has a covalent bond network composed of SP3 bonds. In fact, cubic boron nitrogen is a superhard material whose hardness is second only to diamond. Although the hardness of cubic boron nitride is not as good as that of diamond, it has better thermal and chemical stability, making it more high-temperature devices friendly. Cubic boron nitride powder is available at Henan E-Grind.

On the one hand, a lot of efforts have been devoted to research and develop the derivative synthetic diamond and cubic boron nitride centered hard materials to meet the needs of the current industrial and scientific and technological development, on the other hand, other new types of superhard materials are also being vigorously explored.

3. Fullerite

There is no doubt that the successful synthesis of fullerite is of great significance to the processing of a series of materials such as super strong metals. However, as another kind of super-hard abrasive, the industrial production of fullerite still has to solve the related problems of ultra-high pressure.

4. Nanostructured superhard materials

Nanostructured superhard materials belong to the extrinsic class of superhard materials, such as nano-sized diamond aggregates, which have been proven to have greater hardness and toughness than ordinary large-grain diamonds. One of the common forms is the polymer diamond nanorods, which reach hardness of 150 GPa and are known as one of the hardest materials currently known.