| Corrosion Behavior of GH4169 Alloy under Alternating Oxidation at 900 degrees C and Solution Immersion | |
| Yu, Zhongfen1,2; Liu, Li2,3; Liu, Rui2; Cao, Min2; Fan, Lei2; Li, Ying2; Geng, Shujiang1; Wang, Fuhui3 | |
| Corresponding Author | Liu, Li(liuli@mail.neu.edu.cn) |
| 2019-05-01 | |
| Source Publication | MATERIALS
 |
| ISSN | 1996-1944 |
| Volume | 12Issue:9Pages:17 |
| Abstract | 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. |
| Keyword | Ni-based superalloy high temperature oxidation |
| Funding Organization | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities |
| DOI | 10.3390/ma12091503 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51622106] ; Fundamental Research Funds for the Central Universities[2017GFZ0004] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000469757500144 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133841 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Li |
| Affiliation | 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 |
| Recommended Citation 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. |
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