High temperature oxidation behavior of aluminide on a Ni-based single crystal superalloy in different surface orientations
High temperature oxidation behavior of aluminide on a Ni-based single crystal superalloy in different surface orientations作者机构：Department of Mechanical Engineering Tokyo Metropolitan University Center of Excellence for Research in Engineering Materials (CEREM) Advanced Manufacturing Institute King Saud University Electrochemistry and Corrosion Laboratory Department of Physical Chemistry National Research Centre (NRC)
出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))
年 卷 期：2014年第24卷第2期
页 面：163-170页
核心收录：
学科分类：07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学]
基 金：National Institute for Materials Science NIMS
主 题：Ni-based superalloy Oxidation behavior Microstructure Aluminide coating Crystallographic orientation
摘 要：An investigation on oxidation behavior of coated Ni-based single crystal superalloy in different surface orientations has been carried out at1100 ℃. It has been found that the {100} surface shows a better oxidation resistance than the {110} one, which is attributed that the {110}surface had a slightly higher oxidation rate when compared to the {100} surface. The experimental results also indicated that the anisotropic oxidation behavior took place even with a very small difference in the oxidation rates that was found between the two surfaces. The differences of the topologically close packed phase amount and its penetration depth between the two surfaces, including the ratio of α-Al2O3 after 500 h oxidation, were responsible for the oxidation anisotropy.
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