THE CHARACTERISTICS OF OXIDE SCALE FORMED ON LOW PRESSURE PLASMA SPRAYED NiCrAlY COATING IN THE PRESENCE OF 5% WATER VAPOR

作     者：J.S. Yu C.G. Zhou H.B. Xu S.K. Gong 

作者机构：Department of Materials Science and Engineering Beijing University of Aeronautics and AstronauticsBeijing 100083 China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2002年第15卷第1期

页      面：123-126页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：oxidation water vapor coating 

摘      要：The oxidations of low pressure plasma sprayed (LPPS) NiCrAlY coating on nickel base superalloy were studied at 1050℃ in flows of O2, and mixture of O2 and 5%H2O under atmospheric pressure. Oxide formed on the surface of LPPS NiCrAlY coating after oxidation at 1050℃ in pure O2 consisted of NiCr2O4, whereas oxide formed on the surface of LPPS NiCrAlY coating after oxidation at 1050℃ in a mixture of O2 and 5%H2O is mainly composed of NiO. The effect of water vapor on the characteristics of the oxide scale is attributed to the increase in Ni cation transport.