期刊
CORROSION SCIENCE
卷 100, 期 -, 页码 466-473出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.08.011
关键词
Metal coatings; Superalloys; Hot corrosion
资金
- National Natural Science Foundation of China [51371021, 51431003]
- Aviation Science Foundation [2014ZE51053]
Co-Si modified aluminide coating on nickel based superalloys was prepared by pack cementation process, then microstructure and hot corrosion resistance were studied. The mass gain of Co-Si modified aluminide coating is 0.32 mg/cm(2) after hot corrosion at 1173 K for 100 h. Si can boost the hot corrosion resistance by improving the formation of Al2O3. SiO2 has low solubility over a wide range of salt acidity and good stability in the melting Na2SO4 + NaCl, preventing rapid corrosion attack and prohibiting the high fluxing rate. (C) 2015 Elsevier Ltd. All rights reserved.
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