Factors Affecting The Wear Resistance Of Grinding Balls

The wear mechanism of alumina ceramics is divided into brittle fracture wear and plastic deformation wear. The wear characteristics of the former are the loss of grains along the crystal fracture, and the wear characteristics of the latter are the microscopic cutting of the crystal fracture. The former has a much greater wear rate than the latter. People expect the wear of ceramics to be plastic deformation wear. The internal factors of ceramics have an important influence on the plastic deformation wear mechanism of ceramics, and the alumina porcelain ball is a friction wear component, and its wear rate is affected by internal factors and external factors, among which internal factors are greatly affected. Alumina ceramics wear resistance and its own material mechanical properties, microstructure synergy has a close relationship, that is, with its internal factors, modulus of elasticity, hardness, fracture toughness, grain size, grain boundaries and porosity, people have carried out a lot of research, ceramic toughness and grain size is the most studied, and wear resistance is the most closely related internal factors, toughness on the friction wear of ceramics has a great impact, because the smaller the grain, the better the wear resistance of ceramics, so wear-resistant ceramics are developing in the direction of microcrystallization. However, the cost of nano-alumina ceramics is very high, and it is difficult to promote and use them in engineering applications, so the research focus of alumina ceramic wear-resistant materials has made breakthroughs and developments in the range of grain sizes of several microns.