长期以来硬质合金刀具,特别是硬质合金可转位刀片都采用氮化钛镀层。实践证明,这种镀层是可靠的。近年来发展了一种新的镀层方法。尽管今后仍采用氮化钛镀层,但在多数情况下不再使用化学镀层,而采用物理镀层。下面介绍这种镀层的主要特点。化学和物理镀层方法 CVD方法是通过几种气体(例如,氯化钛、氢和氮、图1)的化学反应而获得镀层。 Carbide knives have long been used, especially cemented carbide indexable inserts are made of titanium nitride coating. Practice has proved that this coating is reliable. In recent years, a new coating method has been developed. Although the use of titanium nitride coating in the future, but in most cases no longer use the chemical plating, the use of physical coating. The following describes the main features of this coating. Chemical and Physical Coating Methods CVD methods are obtained by chemical reaction of several gases (eg, titanium chloride, hydrogen and nitrogen, Figure 1).