Properties of plasma sprayed NiCrAlY＋ZrO2 coating onTiAl alloy surface
来源期刊：中国有色金属学报(英文版)2007年增刊第1期(Part ⅡB)
论文作者：周海 陈飞 吕晓静
文章页码：851 - 853
Key words：TiAl alloy; plasma spraying; NiCrAlY+ZrO2 thermal barrier coating; oxidation resistance
Abstract: The NiCrAlY+ZrO2 thermal barrier coating was prepared on the surface of TiAl alloy by plasma spraying technique. The microstructure and phase structure were analyzed using scanning electron microscopy (SEM) and X-ray diffractometry (XRD). The high temperature oxidation resistance of the plasma sprayed samples at 850℃ was investigated. The results show that the bonding between thermal barrier coating and substrate is very good. Surface hardness of TiAl alloy is improved too. The microhardness of the coating surface is about HV 900 after the oxidation test at 850 ℃. The oxidation resistance of the samples is improved remarkably.
基金信息：Beijing Excellent Talent Nurture and Sponsor Project
