ABSTRACT
The influence of grinding and wear on strength and residual stress in Mg-PSZ and Y-TZP was studied. The grinding tests were performed with two different diamond wheels on Mg-PSZ and with three different wheels on Y-TZP. The wheels differed mainly in diamond grain size. Strength, residual stress and phase content were measured after the grinding tests. The countermaterial in the wear tests was a hardened steel. Wear tests were performed under ambient conditions and with water as a lubricant under various loads. The strength of worn surfaces was measured. The grinding analysis of Mg-PSZ resulted in a clear and consistent picture of the relation between the surface treatment, and strength, phase content and residual stress. The same analysis of Y-TZP showed that this material is more complex than Mg-PSZ. The results of the wear tests show that the strength of worn Mg-PSZ is influenced by the development of residual stress due to wear testing. The results of the wear tests on Y-TZP show that this material is more complicated, and that more research is required to explain the behaviour of Y-TZP.
