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High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel

The isothermal oxidation behavior of 17Cr-0.85Si-0.5Nb-1.2Cu ferritic stainless steel in air was studied from 850°C to 1050°C by analyzing its weight gain after oxidation. The kinetic curves were plotted using the oxidation weight-gain data, and the structure, surface morphology, and element distrib...

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Autores principales: Zhang, Mengqi, Han, Ying, Zu, Guoqing, Sun, Jiapeng, Zhu, Weiwei, Chen, Hua, Ran, Xu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7758150/
https://www.ncbi.nlm.nih.gov/pubmed/33381256
http://dx.doi.org/10.1155/2020/8847831
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author Zhang, Mengqi
Han, Ying
Zu, Guoqing
Sun, Jiapeng
Zhu, Weiwei
Chen, Hua
Ran, Xu
author_facet Zhang, Mengqi
Han, Ying
Zu, Guoqing
Sun, Jiapeng
Zhu, Weiwei
Chen, Hua
Ran, Xu
author_sort Zhang, Mengqi
collection PubMed
description The isothermal oxidation behavior of 17Cr-0.85Si-0.5Nb-1.2Cu ferritic stainless steel in air was studied from 850°C to 1050°C by analyzing its weight gain after oxidation. The kinetic curves were plotted using the oxidation weight-gain data, and the structure, surface morphology, and element distribution of the oxide films were analyzed by XRD, SEM, and EDS. The results showed that the oxidation kinetics curves at 850°C and 950°C followed a parabolic law, and a continuous and dense oxide film composed of Cr(2)O(3) and MnCr(2)O(4), FeCr(2)O(4), and Cu-Cr rich spinel was formed, which reveals that the steel displayed good oxidation resistance. When the temperature was increased to 1050°C, the oxidation kinetics curves gradually changed from parabolic to linear after 40 h exposure, which indicated that the oxidation resistance significantly worsened. A lower oxidation resistance was observed at 1050°C due to the formation of a large amount of Fe(2)O(3) on the surface and the volatilization of the inner Cr(2)O(3) layer.
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spelling pubmed-77581502020-12-29 High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel Zhang, Mengqi Han, Ying Zu, Guoqing Sun, Jiapeng Zhu, Weiwei Chen, Hua Ran, Xu Scanning Research Article The isothermal oxidation behavior of 17Cr-0.85Si-0.5Nb-1.2Cu ferritic stainless steel in air was studied from 850°C to 1050°C by analyzing its weight gain after oxidation. The kinetic curves were plotted using the oxidation weight-gain data, and the structure, surface morphology, and element distribution of the oxide films were analyzed by XRD, SEM, and EDS. The results showed that the oxidation kinetics curves at 850°C and 950°C followed a parabolic law, and a continuous and dense oxide film composed of Cr(2)O(3) and MnCr(2)O(4), FeCr(2)O(4), and Cu-Cr rich spinel was formed, which reveals that the steel displayed good oxidation resistance. When the temperature was increased to 1050°C, the oxidation kinetics curves gradually changed from parabolic to linear after 40 h exposure, which indicated that the oxidation resistance significantly worsened. A lower oxidation resistance was observed at 1050°C due to the formation of a large amount of Fe(2)O(3) on the surface and the volatilization of the inner Cr(2)O(3) layer. Hindawi 2020-12-16 /pmc/articles/PMC7758150/ /pubmed/33381256 http://dx.doi.org/10.1155/2020/8847831 Text en Copyright © 2020 Mengqi Zhang et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Zhang, Mengqi
Han, Ying
Zu, Guoqing
Sun, Jiapeng
Zhu, Weiwei
Chen, Hua
Ran, Xu
High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel
title High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel
title_full High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel
title_fullStr High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel
title_full_unstemmed High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel
title_short High-Temperature Oxidation Behavior of a Cu-Bearing 17Cr Ferritic Stainless Steel
title_sort high-temperature oxidation behavior of a cu-bearing 17cr ferritic stainless steel
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7758150/
https://www.ncbi.nlm.nih.gov/pubmed/33381256
http://dx.doi.org/10.1155/2020/8847831
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