Effect of Surface Grinding on Flexural Strength of Alumina

Strength of ceramics depends on the structure that is based on the manufacturing process, the loading condition and the environment. It also depends on the size, the geometry and the mechanical working conditions of the component. In this study, the effect of surface grinding on the flexural strength of alumina is investigated. The flexural strength of alumina ground in the parallel direction to the specimen significantly increased with the size of grinding grit. On the contrary, the strength of alumina ground in the transverse direction to the specimen strongly decreased with the size of grinding grit.