Abstract
By using the plasma CVD method with hydrocarbon and carbon monoxide gas mixtures with hydrogen, a synthesised diamond film was deposited on cutting tools. In order to clarify the wear characteristics and cutting performance of the diamond coated tools, turning tests were carried out on Al–Si alloy, carbon fibre reinforced polymer (CF RP), and glass fibre reinforced polymer (GFRP). The diamond coated tools were found to have a cutting performance equal to that of sintered diamond tools when machining materials which did not present the greatest cutting difficulties such as low Si Al alloys, GFRP, and CFRP. However, when machining high Si Al alloys, the synthesised diamond film showed a cutting performance inferior to that of sintered diamond tools.
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