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Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions
Equipment made of different stainless steels is often used in the hydrometallurgical processing industry. In this study, an electrical resistance sensor was developed for monitoring corrosion in acidic solutions at high temperature. Two types of stainless steel were used as the electrode materials,...
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/PMC7923092/ https://www.ncbi.nlm.nih.gov/pubmed/33669664 http://dx.doi.org/10.3390/s21041449 |
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author | Hren, Miha Kosec, Tadeja Lindgren, Mari Huttunen-Saarivirta, Elina Legat, Andraž |
author_facet | Hren, Miha Kosec, Tadeja Lindgren, Mari Huttunen-Saarivirta, Elina Legat, Andraž |
author_sort | Hren, Miha |
collection | PubMed |
description | Equipment made of different stainless steels is often used in the hydrometallurgical processing industry. In this study, an electrical resistance sensor was developed for monitoring corrosion in acidic solutions at high temperature. Two types of stainless steel were used as the electrode materials, namely grade 316L stainless steel (EN 1.4404) and grade 2507 duplex stainless steel (EN 1.4410). The materials and sensors were exposed to a 10% H(2)SO(4) solution containing 5000 mg/L of NaCl at various temperatures. Results from the sensors were verified using electrochemical techniques and postexposure examination. Results showed that the microstructure played an important role in the interpretation of corrosion rates, highlighting the importance of using an appropriate stainless steel for the production of sensors. Electrochemical tests and postexposure examination both showed that the grade 2507 had a significantly lower corrosion rate compared to the grade 316L. Under industrial‑process conditions, the results for the grade 2507 sensor were promising with respect to sensor durability and performance, despite the extremely harsh operating environment. |
format | Online Article Text |
id | pubmed-7923092 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79230922021-03-03 Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions Hren, Miha Kosec, Tadeja Lindgren, Mari Huttunen-Saarivirta, Elina Legat, Andraž Sensors (Basel) Article Equipment made of different stainless steels is often used in the hydrometallurgical processing industry. In this study, an electrical resistance sensor was developed for monitoring corrosion in acidic solutions at high temperature. Two types of stainless steel were used as the electrode materials, namely grade 316L stainless steel (EN 1.4404) and grade 2507 duplex stainless steel (EN 1.4410). The materials and sensors were exposed to a 10% H(2)SO(4) solution containing 5000 mg/L of NaCl at various temperatures. Results from the sensors were verified using electrochemical techniques and postexposure examination. Results showed that the microstructure played an important role in the interpretation of corrosion rates, highlighting the importance of using an appropriate stainless steel for the production of sensors. Electrochemical tests and postexposure examination both showed that the grade 2507 had a significantly lower corrosion rate compared to the grade 316L. Under industrial‑process conditions, the results for the grade 2507 sensor were promising with respect to sensor durability and performance, despite the extremely harsh operating environment. MDPI 2021-02-19 /pmc/articles/PMC7923092/ /pubmed/33669664 http://dx.doi.org/10.3390/s21041449 Text en © 2021 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Hren, Miha Kosec, Tadeja Lindgren, Mari Huttunen-Saarivirta, Elina Legat, Andraž Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions |
title | Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions |
title_full | Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions |
title_fullStr | Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions |
title_full_unstemmed | Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions |
title_short | Sensor Development for Corrosion Monitoring of Stainless Steels in H(2)SO(4) Solutions |
title_sort | sensor development for corrosion monitoring of stainless steels in h(2)so(4) solutions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7923092/ https://www.ncbi.nlm.nih.gov/pubmed/33669664 http://dx.doi.org/10.3390/s21041449 |
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