Synergistic corrosion behavior of coated Ti60 alloys with NaCl deposit in moist air at elevated temperature |
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Authors: | Yuming Xiong |
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Affiliation: | State Key Laboratory for Corrosion and Protection, The Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China |
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Abstract: | In the present paper, the corrosion behavior of Ti60 alloys with an aluminide, TiAlCr, and enamel coatings in moist air containing NaCl vapor at 700-800 °C were studied. The results showed that the TiAlCr and aluminide coatings failed to protect the substrate from corrosion due to the cyclic formation of volatile products during corrosion at 800 °C. However, an uneven continuous protective Al2O3 scale could form on the aluminide coating during corrosion at 700 °C. And the enamel coating could protect Ti60 from corrosion due to its high thermochemical stability and matched thermal expansion coefficient with substrates of Ti-base alloys during corrosion. |
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Keywords: | A. Titanium A. Metal coatings B. X-ray diffraction C. High temperature corrosion C. Oxide coatings |
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