Steam oxidation resistance of Ni-aluminide/Fe-aluminide duplex coatings formed on creep resistant ferritic steels by low temperature pack cementation process

被引：22
作者：
Xiang, Z. D. [1 ]
Zeng, D. [1 ]
Zhu, C. Y. [1 ]
Rose, S. R. [2 ]
Datta, P. K. [2 ]
机构：
[1] Wuhan Univ Sci & Technol, Sch Met & Mat, Wuhan 430081, Peoples R China
[2] Northumbria Univ, Sch Comp Engn & Informat Sci, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Metal coatings; Intermetallics; Steel; Oxidation; High temperature corrosion; ALLOY-STEELS; HYBRID COATINGS; WATER-VAPOR; MICROSTRUCTURE; ALUMINISATION; RATES; AL;
D O I：
10.1016/j.corsci.2010.09.064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Steam oxidation resistance and thermal stability were studied at 650 C for a coating with an outer Ni2Al3 layer and an inner Fe2Al5 layer formed on P92 steel surface The parabolic rate law of oxidation was obeyed only in less than 2000 h with positive deviations occurring at longer oxidation times The outer layer of the coating was transformed to NiAl during oxidation but It remained stable once it was formed The mechanisms for the enhanced thermal stability were discussed and a simple approach to enhancing the lifetime of the coating was proposed (c) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码：496 / 502
页数：7
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