Abstract:
The deposition mechanism of diamond film on cutting tools and
the state of the interface between film and substrate are
studied theoretically and experimentally. Methods for
controlling diamond crystalline state and improving adhesion of
diamond films to substrates are proposed to improve the quality
of diamond-coated tools. Experiments are performed by cutting
Al-Si18% alloy and SiCp/Al composite with diamond coated tool.
The results indicate that the life of coated tools is 90 times
higher than that of non-coated tools. Wear mechanism of
diamond-coated tools is also studied.
Key words: Coating
tool Diamond Chemical vapor deposition
*
The project is
supported by National Natural Science Foundation of China. Manuscript received on
September 25, 1998; revised manuscript July 23, 1999
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