Abrasive

Natural abrasive grinding
After the direct use of natural mineral rock picking, crushing, grading, or other abrasive made after processing. There are natural emery, natural corundum, natural

garnet and diamond and so on. Table 1 describes the characteristics of this type of abrasive and main uses. Natural abrasives due to resource by natural conditions

Restrictions, it is difficult to artificially control, so compared with artificial abrasives has been relegated to a secondary position.
Abrasive
Abrasive grinding
Artificially refined or synthetic abrasives. Wider application of corundum, silicon carbide, boron carbide, synthetic diamond and cubic boron nitride. Table 2 lists

their main purpose. Diamond and cubic boron nitride is often called the super abrasive or superhard materials, and corundum, carbon

Silicon, then called ordinary abrasive. Additionally, in some grinding and polishing, as well as with the so-called "soft abrasives," such as chromium oxide, iron

oxide and cerium oxide. Artificial corundum and silicon carbide abrasive due to wear, corrosion, or in the optical, electrical, thermal, etc. have different

characteristics,

In addition to used as an abrasive, there are many other uses such as high-grade refractory, electric materials, high temperature semiconductor materials and

engineering structural materials.