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题名: Hot corrosion of arc ion plating NiCrAlY and sputtered nanocrystalline coatings on a nickel-based single-crystal superalloy
作者: Wang, Jinlong;  Chen, Minghui;  Cheng, Yuxian;  Yang, Lanlan;  Bao, Zebin;  Liu, Li;  Zhu, Shenglong;  Wang, Fuhui
发表日期: 2017-7-15
摘要: Hot corrosion in sulfate salt at 850 degrees C of three metallic coatings is investigated comparatively. The NiCrAlY coating loses its protectiveness after 200 h corrosion. Its oxide scale spans off partly and becomes porous as a consequence of basic fluxing. The nanocrystalline coating (SN) performs better than the NiCrAlY one, but its scale is porous as well. Oxidation and/or sulfidation of Ta account for the formation of pores. The yttrium modified nanocrystalline coating (SNY) provides the highest corrosion resistance. Yttrium completely inhibits oxidation and sulfidation of Ta. Its scale is intact and adherent, and exclusively composted of alumina.
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Wang, Jinlong,Chen, Minghui,Cheng, Yuxian,et al. Hot Corrosion Of Arc Ion Plating Nicraly And Sputtered Nanocrystalline Coatings On A Nickel-based Single-crystal Superalloy[J]. Corrosion Science,2017,123:27-39.

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