Effect of pre-oxidation on hot corrosion resistance of HR3C stainless steel in sulfate salt with or without Fe2O3

被引：16

作者：

Yu, Zheng ^{[1
]}

Lu, Jintao ^{[2
]}

Chen, Minghui ^{[1
]}

Wang, Jinlong ^{[1
]}

Wang, Fuhui ^{[1
]}

机构：

[1] Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China

[2] Xian Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 192卷

关键词：

Stainless steel; STEM; Hot corrosion; Sulfidation; BEHAVIOR; TECHNOLOGY; PLATELETS; OXYGEN; NI;

D O I：

10.1016/j.corsci.2021.109789

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

HR3C steel exhibits high oxidation resistance in air at 700 degrees C owing to the formation of a dense chmmia scale. In the presence of sulfate salt deposition (Na2SO4:K2SO4 = 1:1), hot corrosion occurs. It leads to the dissolution and re-precipitation of Cr2O3 platelets and severe internal corrosion. Pre-oxidation can notably enhance corrosion resistance with almost no internal corrosion zone. When the deposited sulfate salt contains Fe2O3 (Na2SO4 : K2SO4:Fe2O3 = 1:1:1), HR3C steel suffers even severer hot corrosion. Its scale spalls off easily and internal corrosion develops deep into the steel. Meanwhile, pre-oxidation played almost no positive effect on corrosion in sulfate salt containing Fe2O3.

引用

页数：9

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