Effect of Cerium on Structure and Properties of TiN and (Ti, Cr)N Coatings Prepared by Arc Ion Plating

来源期刊：Journal of Rare Earths2006年第S2期

论文作者：徐向荣 黄拿灿 杨少敏 吴起白

文章页码：170 - 174

摘    要：TiN, （Ti,Ce）N, （Ti0.7Cr0.3）N and （Ti0.7Cr0.3Ce）N coatings were deposited on W6Mo5Cr4V2 high-speed steel using the pure Ti, Cr and Ti-Ce alloy targets by arc ion plating. The coatings were characterized by using scanning electron microscope （SEM）, X-ray diffraction （XRD） and scratch tests. The results show that the （111） preferred orientation of addition of TiN coating is intensified greatly with a suitable amount of cerium and also results in the appearance of （222） preferred orientation. Although the addition of Ce does not change the phase structure of the （Ti0.7Cr0.3Ce）N coating, （220） preferred orientation of TiCrN coating is intensified evidently. Compared with the coatings free of Ce, the grain size of the coatings with Ce is smaller and the structure is denser. The coating-substrate adhesion and the high-temperature oxidation resistance of the coatings are improved with the addition of Ce. It is found that the （Ti0.7Cr0.3Ce）N coating has high hardness （2648 HV0.025）, good coating-substrate adhesion （Lc is 55 N） and excellent high-temperature oxidation resistance （work temperature is about 800 ℃）, indicating that the addition of suitable amount of Ce can improve the high-temperature oxidation resistance and the adhesion of the PVD coatings.