Unlike coventional PCVD-TiN,no colum-nar growth are evident in PCVD-TiC and Ti(CN)coatings,whose microhard-ness is higher than TiN coatings.

• PCVD－TiC和Ti（CN）膜无明显柱状晶，其显微硬度高于TiN，亦可用于高速钢刀具及模具上提高其使用寿命。