Abstract:The characteristics of BN and CVD are reviewed. Then the deposition process and the effect of deposi ̄
tion temperatureꎬ source gases compositionꎬ heat treatment during the preparation by CVD are summarized. The stabili ̄
zation of process conditions and the reaction mechanism will be the trend for the development of BN coatings. The meth ̄
od to obtain uniform ꎬ controllable thickness and ordered BN interface coatings will be forced in the future study.