High temperature oxidation resistance of plasma sprayed NiCrAl+(ZrO2+Y2O3) gradated coating on stainless steel surface

摘要：

The plasma sprayed gradated coating with the bottom layer of NiCrAl and the top layer of (ZrO2+Y2O3) was prepared by the plasma spraying technique.The phase structure and morphology of the gradated coating were analyzed by means of X-ray diffractometry (XRD) and scanning electron microscopy (SEM).The high temperature oxidation resistance of the plasma sprayed samples at 800 was investigated.The oxidation kinetics curve was ℃ obtained.The results show that the thickness of gradated coating is about 410 μm.The plasma sprayed gradated coating on stainless steel surface can improve the high temperature oxidation resistance of stainless steel.The oxidation rate of stainless steel is less than that of plasma sprayed gradated coating.The oxidation film of plasma sprayed sample is very dense and is not easily exfoliated.The dense oxidation film prevents the stainless steel from more oxidation.

关键词： plasma spraying stainless steel NiCrAl+ (ZrO2+Y2O3) coating high temperature oxidation resistance

作者: CHEN Fei ZHOU Hai L(U) Tao

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