发明授权
US06337000B1 Guide bush and method of forming diamond-like carbon film over the guide bush 失效
导套和导套上形成类金刚石碳膜的方法

Guide bush and method of forming diamond-like carbon film over the guide bush
摘要:
The invention provides a guide bush wherein a cemented carbide alloy containing at least cobalt is provided on an inner surface thereof for holding a workpiece rotatably and slidably in the longitudinal axial direction thereof in close proximity of a cutting tool, and a DLC film is formed over the cemented carbide alloy, cobalt being removed from the surface of the cemented carbide alloy, adjoining the DLC film. By forming the DLC film 15 on the surface of the cemented carbide alloy 12 from which cobalt has been removed, with an intermediate layer formed therebetween, adhesiveness of the DLC film against the cemented carbide alloy fixedly attached to the inner surface of the guide bush is further enhanced.
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