Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions
Powder metallurgy is an effective method for manufacturing stainless steel parts of high quality and accuracy at low cost. However, the use of sintered stainless steels is limited due to their low density, which deteriorates their corrosion resistance. The aim of this study was to determine the corr...
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Format: | Article |
Language: | English |
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2013
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Online Access: | http://eprints.uanl.mx/25624/1/199.pdf |
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author | Cabral Miramontes, José Ángel Barceinas Sánchez, José Dolores Oscar Poblano Salas, Carlos Pedraza Basulto, G. K. Nieves Mendoza, Demetrio Zambrano Robledo, Patricia del Carmen Almeraya Calderón, Facundo Chacón Nava, José G. |
author_facet | Cabral Miramontes, José Ángel Barceinas Sánchez, José Dolores Oscar Poblano Salas, Carlos Pedraza Basulto, G. K. Nieves Mendoza, Demetrio Zambrano Robledo, Patricia del Carmen Almeraya Calderón, Facundo Chacón Nava, José G. |
author_sort | Cabral Miramontes, José Ángel |
collection | Repositorio Institucional |
description | Powder metallurgy is an effective method for manufacturing stainless steel parts of high quality and accuracy at low cost. However, the use of sintered stainless steels is limited due to their low density, which deteriorates their corrosion resistance. The aim of this study was to determine the corrosion behavior of AISI 409Nb stainless steel specimens sintered with different contents of boron in a hydrogen atmosphere. Boron was added for promoting the formation of a liquid phase during sintering at 1150 °C, thereby achieving a reduction of porosity and increase in density, which is necessary to improve corrosion resistance. The electrochemical techniques of linear polarization resistance (LPR) and electrochemical noise (EN) were used to determine the corrosion behavior of samples with and without additions of boron after immersion in two solutions, 0.5M H2SO4 and 0.5M NaCl. The corrosion rates and the possible corrosion mechanisms in the sintered samples were determined. The results indicate that the samples with boron additions are more prone to corrosion due to chromium carbide precipitation. |
format | Article |
id | eprints-25624 |
institution | UANL |
language | English |
publishDate | 2013 |
record_format | eprints |
spelling | eprints-256242024-12-09T17:22:35Z http://eprints.uanl.mx/25624/ Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions Cabral Miramontes, José Ángel Barceinas Sánchez, José Dolores Oscar Poblano Salas, Carlos Pedraza Basulto, G. K. Nieves Mendoza, Demetrio Zambrano Robledo, Patricia del Carmen Almeraya Calderón, Facundo Chacón Nava, José G. TN Ingeniería Minera. Metalurgia Powder metallurgy is an effective method for manufacturing stainless steel parts of high quality and accuracy at low cost. However, the use of sintered stainless steels is limited due to their low density, which deteriorates their corrosion resistance. The aim of this study was to determine the corrosion behavior of AISI 409Nb stainless steel specimens sintered with different contents of boron in a hydrogen atmosphere. Boron was added for promoting the formation of a liquid phase during sintering at 1150 °C, thereby achieving a reduction of porosity and increase in density, which is necessary to improve corrosion resistance. The electrochemical techniques of linear polarization resistance (LPR) and electrochemical noise (EN) were used to determine the corrosion behavior of samples with and without additions of boron after immersion in two solutions, 0.5M H2SO4 and 0.5M NaCl. The corrosion rates and the possible corrosion mechanisms in the sintered samples were determined. The results indicate that the samples with boron additions are more prone to corrosion due to chromium carbide precipitation. 2013 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/25624/1/199.pdf http://eprints.uanl.mx/25624/1.haspreviewThumbnailVersion/199.pdf Cabral Miramontes, José Ángel y Barceinas Sánchez, José Dolores Oscar y Poblano Salas, Carlos y Pedraza Basulto, G. K. y Nieves Mendoza, Demetrio y Zambrano Robledo, Patricia del Carmen y Almeraya Calderón, Facundo y Chacón Nava, José G. (2013) Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions. International journal of electrochemical science (8). pp. 564-577. ISSN 1452-3981 (Entregado) http://www.electrochemsci.org/ |
spellingShingle | TN Ingeniería Minera. Metalurgia Cabral Miramontes, José Ángel Barceinas Sánchez, José Dolores Oscar Poblano Salas, Carlos Pedraza Basulto, G. K. Nieves Mendoza, Demetrio Zambrano Robledo, Patricia del Carmen Almeraya Calderón, Facundo Chacón Nava, José G. Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions |
thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
title | Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions |
title_full | Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions |
title_fullStr | Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions |
title_full_unstemmed | Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions |
title_short | Corrosion behavior of AISI 409Nb stainless steel manufactured by powder metallurgy exposed in H2SO4 and NaCl solutions |
title_sort | corrosion behavior of aisi 409nb stainless steel manufactured by powder metallurgy exposed in h2so4 and nacl solutions |
topic | TN Ingeniería Minera. Metalurgia |
url | http://eprints.uanl.mx/25624/1/199.pdf |
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