High-temperature oxidation behavior of GH4169 and Inconel617 nickel-based superalloys in SOFC environment

被引：1
|
作者：
Jiang, Chuandong [1 ]
Shen, Xuesong [2 ]
Song, Weilong [2 ]
Shi, Wangying [2 ]
Zhong, Xianzeng [2 ]
Du, Cuiwei [1 ]
Ma, Hongchi [1 ]
Li, Xiaogang [1 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Key Lab Corros & Protect MOE, Beijing 100083, Peoples R China
[2] Shandong Guochuang Fuel Cell Technol Innovat Ctr C, Weifang 261061, Shandong, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 91卷
关键词：
Nickel-based alloys; GH4169; Inconel617; Solid oxide fuel cell; High temperature oxidation; FERRITIC STAINLESS-STEEL; INTERCONNECT; CORROSION; ALLOY;
D O I：
10.1016/j.ijhydene.2024.10.180
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Field exposure for 5000h combined with weight gain measurement and morphology/composition analysis of oxide film were conducted to examine high temperature oxidation behavior of GH4169 and In617 nickel-based super alloys in SOFC system environment. The In617 alloy has been found to demonstrate excellent oxidation resistance in the SOFC environment because of its high Ni content. An integral and dense NiO oxide film can be developed in the outer layer with a continuous Cr2O3 oxide film formed in inner layer. It indicates that NiO played a crucial role in the formation of an integral and dense oxide film. In contrast, GH4169 alloy failed to develop a continuous and dense oxide film probably due to high Fe content, in which case Fe-dopped chromium oxide (Fe,Cr)2O3 was formed. As a result, the oxide film was loose and porous, leading to relatively poor oxidation resistance.
引用
收藏
页码：414 / 422
页数：9
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