RESIDUAL-STRESSES IN HOT-PRESSED SI3N4 GROOVED BY SINGLE-POINT GRINDING

The effects of grinding on mechanical properties of ceramics are assessed. Hot-pressed silicon nitride plates were grooved by single diamond points with varying degrees of flatness mounted on a wheel rotating at varying speeds. The plates were divided into bars and the remaining strengths were measured. The depths of damage were measured and used to calculate the theoretical strengths.