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DZ40M和K452高温合金在NaCl熔盐中的热腐蚀行为研究

Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt.

作者信息

Wan Lei, Zhang Zeyu, Wang Wenquan, Xue Yunpeng, Shen Jubao, Sun Tao, Sun Haiou

机构信息

College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China.

Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China.

出版信息

Materials (Basel). 2022 Feb 17;15(4):1512. doi: 10.3390/ma15041512.

DOI:10.3390/ma15041512
PMID:35208048
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8874360/
Abstract

The corrosion of cobalt-based DZ40M and nickel-based K452 superalloy at 900 °C was investigated by NaCl salt coating. Accordingly, the differences in hot corrosion behavior were analyzed considering the development methods and elementary composition by comparing the two alloys' failure. Then, the corrosion mechanism induced by NaCl was proposed by comparing oxidation and hot corrosion behavior. The relatively continuous AlO and TiO formed on K452 superalloy with higher content of Al and Ti have lower solubility and less damage in NaO. Thus, the hot corrosion rate of K452 is lower than that of DZ40M with higher content of C, Cr, and W.

摘要

通过NaCl盐涂层研究了钴基DZ40M和镍基K452高温合金在900℃下的腐蚀情况。据此，通过比较两种合金的失效情况，从显影方法和元素组成方面分析了热腐蚀行为的差异。然后，通过比较氧化和热腐蚀行为，提出了由NaCl引起的腐蚀机理。在具有较高Al和Ti含量的K452高温合金上形成的相对连续的AlO和TiO在NaO中的溶解度较低且损伤较小。因此，K452的热腐蚀速率低于具有较高C、Cr和W含量的DZ40M。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/5627929cdbb4/materials-15-01512-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/5627929cdbb4/materials-15-01512-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/f91cd781740c/materials-15-01512-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/cb2e67dc0104/materials-15-01512-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/3b3b732b7744/materials-15-01512-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/82594e3d5754/materials-15-01512-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/9367d8475d72/materials-15-01512-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/5ec9fe565b83/materials-15-01512-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/cc6148290565/materials-15-01512-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/d2d5b95bc0ff/materials-15-01512-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/dd49d3c6f095/materials-15-01512-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/c54328c6efe8/materials-15-01512-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/5695eaf248de/materials-15-01512-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/070b55703d3c/materials-15-01512-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/588872cdd6f6/materials-15-01512-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/801d/8874360/5627929cdbb4/materials-15-01512-g014.jpg

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