Effects of Testing Methods and Surface Grinding Conditions on Strength Values of Ceramics
In order to evaluate precision grinding of ceramic components test specimens of ZrO2 (3 mol.% Y2O3), Al2O3-30 vol.% ZrO2 and siliconized SiC were slip cast, sintered, and ground using the same grinding tools and grinding conditions as chosen for a given set of manufacturing processes. Reference specimens were lapped for comparison to grinding. Specimens were tested in four-point bending as well as biaxial flexure (using the concentric-ring method). Equibiaxial flexure strengths were calculated from uniaxial strength, effective surface area and Weibull modulus. The effect of grinding conditions on strength of the three materials tested is discussed.
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