Tribochemically Assisted Wear of Silicon Nitride Ball

摘要

The response of silicon nitride balls to different chemical additives contained in a diamond slurry was studied in a high speed four-ball machine. It was found that there are two effective inorganic chemical additives: acid additive (A) and alkaline additive (B). Use of A or B in the diamond slurry resulted in a high material removal rate and a rough surface. With an increase in the size of the diamond particles contained in the slurry, the material removal rate and the roughness of the surface also increased. Addition of sulfur-containing additives into the diamond slurries produced a decrease in the material removal rate but a smoother surface. The presence of water in the oil-based diamond slurry gave an increase in the material removal rate and a relatively smooth surface. In the ester-containing slurry, there was an increase in the material removal rate and the roughness of the surface.