Journal
CORROSION SCIENCE
Volume 92, Issue -, Pages 148-154Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.11.043
Keywords
Metal coatings; Superalloys; Hot corrosion
Funding
- National Natural Science Foundation of China [51371021]
- Aviation Science Foundation [2014ZE51053]
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Y-Ce-Co-modified aluminide coating on nickel base superalloys was prepared by pack cementation method. The microstructure and hot corrosion behavior of the coating were investigated. The results indicate that Y-Ce-Co-modified aluminide coating has a mass gain of only 0.32 mg/cm(2) after hot corrosion at 1173 k for 100 h. The coating exhibits superior hot corrosion resistance to they-Co-modified and Co-modified aluminide coatings. The improved hot corrosion resistance of the Y-Ce-Co-modified aluminide coating is mainly attributed to the synergistic effect of Y and Ce. (C) 2014 Elsevier Ltd. All rights reserved.
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