Abstract
The machining performance of oxide ceramic cutting tools was correlated with their values of thermal diffusivity, hardness and density. It was found that high crater wear resistance requires high values of the thermal diffusivity, hardness and density. High flank wear resistance requires a high value of thermal diffusivity, but is independent of hardness. In contrast, a good surface finish of the steel workpiece (AISI 4340) requires a combination of low thermal diffusivity and low hardness.
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