Insight into the corrosion resistance of Mo-added NiCrBSi coating in simulated waste incineration environment

Haiyan Li; Huan Liu; Mingwen Bai; Xiuju Zhang; Hetian Chi; Tongzhou Chen; Yun Yu; Hong Yao

doi:10.1016/J.CORSCI.2023.111085

Insight into the corrosion resistance of Mo-added NiCrBSi coating in simulated waste incineration environment

Haiyan Li, Huan Liu, Mingwen Bai, Xiuju Zhang, Hetian Chi, Tongzhou Chen, Yun Yu, Hong Yao

Centre for Manufacturing and Materials

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3 Citations (Scopus)

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Abstract

The corrosion resistance of Ni40AA and Ni40AA-Mo coatings on 304SS substrate was evaluated in molten NaCl-Na2SO4-KCl-K2SO4 salts at 600 ℃. In the oxidizing-chloridizing environment, results showed that Cr or Cr-rich oxides would react with molten salts and generate chlorides or chromates (Na2Cr2O4; K2CrO4). After adding Mo, the dissolved Cr in soluble corrosion products was significantly reduced. Mo substituted Cr to react with molten salts and reduced the depletion of Cr, which benefited the accumulation of Cr-rich oxides. Therefore, adding Mo enhanced the corrosion resistance of Ni40AA, reducing the corrosion weight gain by approx. 50% and the thickness loss by 1/3.

Original language	English
Article number	111085
Number of pages	11
Journal	Corrosion Science
Volume	216
Early online date	5 Mar 2023
DOIs	https://doi.org/10.1016/J.CORSCI.2023.111085
Publication status	Published - 15 May 2023

Bibliographical note

© 2023, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it

Funder

The authors are grateful for the financial support provided by the Key Research and Development Plan of Hubei Province (2021BCA157), the China Postdoctoral Science Foundation (2022M721241), and the Foundation of State Key Laboratory of Coal Combustion (No. FSKLCCA1901). Special thanks to the Testing Center of Huazhong University of Science and Technology for the testing.

Keywords

Mo
NiCrBSi
HVOF
Molten salts
High-temperature corrosion

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10.1016/J.CORSCI.2023.111085

Bai2023AAM Accepted author manuscript, 2.25 MBLicence: CC BY-NC-ND

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abstract = "The corrosion resistance of Ni40AA and Ni40AA-Mo coatings on 304SS substrate was evaluated in molten NaCl-Na2SO4-KCl-K2SO4 salts at 600 ℃. In the oxidizing-chloridizing environment, results showed that Cr or Cr-rich oxides would react with molten salts and generate chlorides or chromates (Na2Cr2O4; K2CrO4). After adding Mo, the dissolved Cr in soluble corrosion products was significantly reduced. Mo substituted Cr to react with molten salts and reduced the depletion of Cr, which benefited the accumulation of Cr-rich oxides. Therefore, adding Mo enhanced the corrosion resistance of Ni40AA, reducing the corrosion weight gain by approx. 50% and the thickness loss by 1/3.",

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AU - Yao, Hong

N1 - © 2023, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it

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N2 - The corrosion resistance of Ni40AA and Ni40AA-Mo coatings on 304SS substrate was evaluated in molten NaCl-Na2SO4-KCl-K2SO4 salts at 600 ℃. In the oxidizing-chloridizing environment, results showed that Cr or Cr-rich oxides would react with molten salts and generate chlorides or chromates (Na2Cr2O4; K2CrO4). After adding Mo, the dissolved Cr in soluble corrosion products was significantly reduced. Mo substituted Cr to react with molten salts and reduced the depletion of Cr, which benefited the accumulation of Cr-rich oxides. Therefore, adding Mo enhanced the corrosion resistance of Ni40AA, reducing the corrosion weight gain by approx. 50% and the thickness loss by 1/3.

AB - The corrosion resistance of Ni40AA and Ni40AA-Mo coatings on 304SS substrate was evaluated in molten NaCl-Na2SO4-KCl-K2SO4 salts at 600 ℃. In the oxidizing-chloridizing environment, results showed that Cr or Cr-rich oxides would react with molten salts and generate chlorides or chromates (Na2Cr2O4; K2CrO4). After adding Mo, the dissolved Cr in soluble corrosion products was significantly reduced. Mo substituted Cr to react with molten salts and reduced the depletion of Cr, which benefited the accumulation of Cr-rich oxides. Therefore, adding Mo enhanced the corrosion resistance of Ni40AA, reducing the corrosion weight gain by approx. 50% and the thickness loss by 1/3.

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Insight into the corrosion resistance of Mo-added NiCrBSi coating in simulated waste incineration environment

Abstract

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Keywords

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