Corrosion Behavior of GH4169 Alloy under Alternating Oxidation at 900 degrees C and Solution Immersion

doi:10.3390/ma12091503

IMR OpenIR

	Corrosion Behavior of GH4169 Alloy under Alternating Oxidation at 900 degrees C and Solution Immersion
	Yu, Zhongfen 1,2; Liu, Li 2,3; Liu, Rui 2; Cao, Min 2; Fan, Lei 2; Li, Ying 2; Geng, Shujiang 1; Wang, Fuhui 3
通讯作者	Liu, Li(liuli@mail.neu.edu.cn)
	2019-05-01
发表期刊	MATERIALS
ISSN	1996-1944
卷号	12 期号:9 页码:17
摘要	In this paper, the corrosion behavior of GH4169 superalloy under alternating oxidation (at 900 degrees C) and solution immersion (in 3.5% NaCl solution, 30 +/- 1 degrees C) has been studied by SEM, XRD, XPS, and electron probe microanalysis (EPMA). The results show that the alternating environment increases the corrosion rate of GH4169. The reaction of NaCl and Cr2O3 generates various volatile and soluble corrosion products, such as Na2Cr2O7, CrCl3, Cl-2, and Na2CrO4, at a high temperature. The destruction of the protective Cr2O3 film leads to the increase of defects in the oxide scale, promoting the formation of oxides, such as NiO and Fe2O3, and changes the composition and structure of the oxide film. After repeated iterations, the mixed oxides will result in the spalling of the oxide film because they can reduce the fracture toughness of the corrosion scale. Therefore, the corrosion is comprehensively intensified.
关键词	Ni-based superalloy high temperature oxidation
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
DOI	10.3390/ma12091503
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51622106] ; Fundamental Research Funds for the Central Universities[2017GFZ0004]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000469757500144
出版者	MDPI
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/133841
专题	中国科学院金属研究所
通讯作者	Liu, Li
作者单位	1.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat MoE, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Yu, Zhongfen,Liu, Li,Liu, Rui,et al. Corrosion Behavior of GH4169 Alloy under Alternating Oxidation at 900 degrees C and Solution Immersion[J]. MATERIALS,2019,12(9):17.
APA	Yu, Zhongfen.,Liu, Li.,Liu, Rui.,Cao, Min.,Fan, Lei.,...&Wang, Fuhui.(2019).Corrosion Behavior of GH4169 Alloy under Alternating Oxidation at 900 degrees C and Solution Immersion.MATERIALS,12(9),17.
MLA	Yu, Zhongfen,et al."Corrosion Behavior of GH4169 Alloy under Alternating Oxidation at 900 degrees C and Solution Immersion".MATERIALS 12.9(2019):17.