HOT CORROSION PERFORMANCE OF AMORPHOUS Al2O3 COATING
来源期刊：中国有色金属学报(英文版)1993年第3期
论文作者：Zhu Shenglong Wang Fuhui Lou Hanyi Wu Weitao
文章页码：52 - 55
Key words：Al2O3 coating ;hot corrosion; reactive sputtering
Abstract: The amorphous Al2O3 coatings were prepared on superalloy GH30 by dc reactive sputtering. Hot corrosion behaviors of the coated and uncoated specimens were studied in 75％Na2SO4+25％K2SO4 melt at I 123 K by either immersing the samples half in sulphate or applying sulphate deposit. The Al2O3 coatings reduced the hot corrosion rates by about one magnitude, and the internal sulphidation was not observed in the Al2O3 coated specimens.
