在刀具上沉积TiN、TIC或其它复合镀层,可大大提高它们的使用寿命。镀超硬膜的化学气相沉积(CVD法),因其工艺成熟,适于大批量生产,但有两个显著的缺点:(1)沉积时温度高(要在1000℃左右),所以只能用于硬质合金刀具上。在高速钢刀具或模具上则不能使用。(2)在硬质合金上应用,也存在温度高引起基体脱碳,形成脆性层(如η相), Deposition of TiN, TIC or other composite coatings on tools can greatly increase their useful life. Chemical vapor deposition (CVD) method of superhard film plating, because of its mature technology, suitable for mass production, but there are two notable shortcomings: (1) deposition of high temperature (to about 1000 ℃), it can only For carbide cutting tools. In high-speed steel tools or mold can not be used. (2) Carbide application, there are also high temperature caused by decarburization of the matrix, the formation of brittle layer (such as η phase),