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

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 co...

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Autores principales: Wan, Lei, Zhang, Zeyu, Wang, Wenquan, Xue, Yunpeng, Shen, Jubao, Sun, Tao, Sun, Haiou
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8874360/
https://www.ncbi.nlm.nih.gov/pubmed/35208048
http://dx.doi.org/10.3390/ma15041512
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author Wan, Lei
Zhang, Zeyu
Wang, Wenquan
Xue, Yunpeng
Shen, Jubao
Sun, Tao
Sun, Haiou
author_facet Wan, Lei
Zhang, Zeyu
Wang, Wenquan
Xue, Yunpeng
Shen, Jubao
Sun, Tao
Sun, Haiou
author_sort Wan, Lei
collection PubMed
description 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 Al(2)O(3) and TiO(2) formed on K452 superalloy with higher content of Al and Ti have lower solubility and less damage in Na(2)O. Thus, the hot corrosion rate of K452 is lower than that of DZ40M with higher content of C, Cr, and W.
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spelling pubmed-88743602022-02-26 Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt Wan, Lei Zhang, Zeyu Wang, Wenquan Xue, Yunpeng Shen, Jubao Sun, Tao Sun, Haiou Materials (Basel) Article 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 Al(2)O(3) and TiO(2) formed on K452 superalloy with higher content of Al and Ti have lower solubility and less damage in Na(2)O. Thus, the hot corrosion rate of K452 is lower than that of DZ40M with higher content of C, Cr, and W. MDPI 2022-02-17 /pmc/articles/PMC8874360/ /pubmed/35208048 http://dx.doi.org/10.3390/ma15041512 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wan, Lei
Zhang, Zeyu
Wang, Wenquan
Xue, Yunpeng
Shen, Jubao
Sun, Tao
Sun, Haiou
Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt
title Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt
title_full Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt
title_fullStr Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt
title_full_unstemmed Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt
title_short Research on Hot Corrosion Behavior of DZ40M and K452 Superalloys in NaCl Molten Salt
title_sort research on hot corrosion behavior of dz40m and k452 superalloys in nacl molten salt
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8874360/
https://www.ncbi.nlm.nih.gov/pubmed/35208048
http://dx.doi.org/10.3390/ma15041512
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