抄録
Highly-biocompatible tantalum alloy is promising material for artificial joints to replace the commonly used Co-Cr alloy. There is however a productivity problem in using tantalum alloy material, since the material often inflicts serious damage on processing tools and shortens their life span. Diamond is considered to be the most appropriate tool material for use against tantalum alloys as it is highly abrasion-resistant, although it does lack stability. In this research, we conducted a cutting experiment using a nano-polycrystalline diamond tool, which has high mechanical strength, high-temperature hardness and high thermal conductance, to study the abrasion resistance characteristics of the tool.
