Abstract
In this study, type Ib, type IIa, and type IIb synthetic diamonds tools were used for the ultra-precision machining (UPM) of copper. Raman spectroscopy showed that the diamond cutting tools used in these experiments exhibited high-quality sp3 structure and little residual stress in the diamond lattice. Type IIb diamond cutting tools showed higher durability and better UPM performance than the other types of diamond cutting tools. Chemical wear was deemed significant with respect to the cutting tools’ wear in this UPM experiment. Higher durability and enhanced UPM performance could be attributed to the higher thermal and chemical stabilities of the type IIb diamond cutting tool.
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