Effect of Water Vapor on the Oxidation of Pt-modified Ni-22Al Alloys

作     者：S.HAYASHI M.AUCHI T.NARITA B.GLEESON 

作者机构：Division of Materials Science and EngineeringGraduate School of EngineeringHokkaido UniversitySapporoJapan 

出 版 物：《中国腐蚀与防护学报》 (Journal of Chinese Society For Corrosion and Protection)

年 卷 期：2009年第29卷第4期

页      面：317-318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：金属 氧化 腐蚀 水蒸汽 

摘      要：Cyclic oxidation behavior of two-phaseγ+γ -Ni-22Al-5 and -10 Pt alloys in air with and without 30 vol.%H_2O at 1000℃was *** oxidation of 5 and 10 Pt alloys in air was initially rapid and followed by a slow steady-state *** oxidation during this steady-state stage was followed the parabolic rate law,and the parabolic rate constants for the two different Pt content alloys were *** the mass change of 5 Pt alloy during the initial rapid oxidation stage was much higher than that of 10 Pt,and it resulted in higher oxidation mass gain on 5 Pt alloy after 500 *** oxidation behavior,initial rapid followed by slow steady-state,was observed when the alloys were oxidized in air+30%H_2O,however the initial oxidation mass change in the wet atmosphere was much higher for both alloys than in ***,the oxidation rate constants for both alloys during the steady-state stage significantly decreased in the atmosphere with water ***,oxidation mass gain on the 5 Pt alloy was not observed after about 100 cycles of oxidation.