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Hot corrosion properties of composite coatings in the presence of NaCl at 700 and 900 degrees C
J. Ma; S. M. Jiang; J. Gong; C. Sun
2013
Source PublicationCorrosion Science
ISSN0010-938X
Volume70Pages:29-36
AbstractCyclic hot corrosion tests have been carried out on three coatings (one NiCoCrAlY and two composite coatings) at 700 and 900 degrees C. The kinetic curves and evolution of microstructure show that the composite coating with a Cr-base interlayer performs best. The Cr2O3 scale is more effective to protect the coating at 700 degrees C than that at 900 degrees C. The corrosion process is accelerated by NaCl via forming volatile MClx and inducing the formation of molten voids in the coating or extra oxidation at the interface of fusant/oxide scale, determined by the temperature and the compositions of the coating. (C) 2013 Elsevier Ltd. All rights reserved.
description.department[ma, jun ; jiang, su meng ; gong, jun ; sun, chao] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, liaoning, peoples r china. ; sun, c (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 72 wenhua rd, shenyang 110016, liaoning, peoples r china. ; csun@imr.ac.cn
KeywordMetal Coatings Molten Salts Sem Hot Corrosion High-temperature Corrosion Gas-turbine Components Nickel-base Alloys Oxidation Behavior Bond Coatings Aluminide Coatings Microstructure Preoxidation Mechanisms Resistance
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71401
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
J. Ma,S. M. Jiang,J. Gong,et al. Hot corrosion properties of composite coatings in the presence of NaCl at 700 and 900 degrees C[J]. Corrosion Science,2013,70:29-36.
APA J. Ma,S. M. Jiang,J. Gong,&C. Sun.(2013).Hot corrosion properties of composite coatings in the presence of NaCl at 700 and 900 degrees C.Corrosion Science,70,29-36.
MLA J. Ma,et al."Hot corrosion properties of composite coatings in the presence of NaCl at 700 and 900 degrees C".Corrosion Science 70(2013):29-36.
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