Properties of plasma sprayed NiCrAlY＋ZrO2 coating on TiAl alloy surface

摘要：

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.

关键词： TiAl alloy plasma spraying NiCrAlY+ZrO2 thermal barrier coating oxidation resistance

作者: ZHOU Hai CHEN Fei Lü Xiao-jing

作者单位: College of Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）