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Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel
Chromia-forming ferritic stainless steel (FSS) is a highly promising interconnect material for application in solid oxide fuel cells. In this study, initial oxidation of chromium oxides was performed at 500–800 °C to understand the evolution of materials at an early stage. The structural variations...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538194/ https://www.ncbi.nlm.nih.gov/pubmed/34683728 http://dx.doi.org/10.3390/ma14206136 |
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author | Yung, Tung-Yuan Tseng, Hui-Ping Lu, Wen-Feng Tsai, Kun-Chao Shen, Tien Cheng, Hsin-Ming Chen, Jeng-Shiung Chen, Po-Tuan |
author_facet | Yung, Tung-Yuan Tseng, Hui-Ping Lu, Wen-Feng Tsai, Kun-Chao Shen, Tien Cheng, Hsin-Ming Chen, Jeng-Shiung Chen, Po-Tuan |
author_sort | Yung, Tung-Yuan |
collection | PubMed |
description | Chromia-forming ferritic stainless steel (FSS) is a highly promising interconnect material for application in solid oxide fuel cells. In this study, initial oxidation of chromium oxides was performed at 500–800 °C to understand the evolution of materials at an early stage. The structural variations in oxide scales were analyzed through scanning electron microscopy, energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), X-ray diffractometry (XRD), laser confocal microscopy (LSCM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Surface electrochemical properties were investigated through electrochemical impedance spectroscopy to understand how the heat treatment temperature affected surface impedance. Treatment temperatures higher than 700 °C facilitate the diffusion of Cr and Mn, thus allowing ferritic spinels to form on the surface and leading to high electrical conductivity. |
format | Online Article Text |
id | pubmed-8538194 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-85381942021-10-24 Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel Yung, Tung-Yuan Tseng, Hui-Ping Lu, Wen-Feng Tsai, Kun-Chao Shen, Tien Cheng, Hsin-Ming Chen, Jeng-Shiung Chen, Po-Tuan Materials (Basel) Article Chromia-forming ferritic stainless steel (FSS) is a highly promising interconnect material for application in solid oxide fuel cells. In this study, initial oxidation of chromium oxides was performed at 500–800 °C to understand the evolution of materials at an early stage. The structural variations in oxide scales were analyzed through scanning electron microscopy, energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), X-ray diffractometry (XRD), laser confocal microscopy (LSCM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Surface electrochemical properties were investigated through electrochemical impedance spectroscopy to understand how the heat treatment temperature affected surface impedance. Treatment temperatures higher than 700 °C facilitate the diffusion of Cr and Mn, thus allowing ferritic spinels to form on the surface and leading to high electrical conductivity. MDPI 2021-10-15 /pmc/articles/PMC8538194/ /pubmed/34683728 http://dx.doi.org/10.3390/ma14206136 Text en © 2021 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 Yung, Tung-Yuan Tseng, Hui-Ping Lu, Wen-Feng Tsai, Kun-Chao Shen, Tien Cheng, Hsin-Ming Chen, Jeng-Shiung Chen, Po-Tuan Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel |
title | Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel |
title_full | Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel |
title_fullStr | Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel |
title_full_unstemmed | Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel |
title_short | Surface Structure Analysis of Initial High-Temperature Oxidation of SS441 Stainless Steel |
title_sort | surface structure analysis of initial high-temperature oxidation of ss441 stainless steel |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8538194/ https://www.ncbi.nlm.nih.gov/pubmed/34683728 http://dx.doi.org/10.3390/ma14206136 |
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