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Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings

In this study, an amorphous Ni-13.4Cr-11.6P (mass%) alloy coating with a thickness of 30 μm was deposited on the surface of SUS304 stainless steel as a brazing filler metal to conduct brazing. The differential thermal analysis measurements indicate that the electrodeposited Ni-13.4Cr-11.6P alloy has...

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Autores principales: Liu, Shubin, Shohji, Ikuo, Kobayashi, Tatsuya, Osanai, Katsuharu, Ando, Tetsuya, Hirohashi, Junichiro, Wake, Tsunehito, Inoue, Katsufumi, Yamamoto, Hiroki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8347716/
https://www.ncbi.nlm.nih.gov/pubmed/34361414
http://dx.doi.org/10.3390/ma14154216
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author Liu, Shubin
Shohji, Ikuo
Kobayashi, Tatsuya
Osanai, Katsuharu
Ando, Tetsuya
Hirohashi, Junichiro
Wake, Tsunehito
Inoue, Katsufumi
Yamamoto, Hiroki
author_facet Liu, Shubin
Shohji, Ikuo
Kobayashi, Tatsuya
Osanai, Katsuharu
Ando, Tetsuya
Hirohashi, Junichiro
Wake, Tsunehito
Inoue, Katsufumi
Yamamoto, Hiroki
author_sort Liu, Shubin
collection PubMed
description In this study, an amorphous Ni-13.4Cr-11.6P (mass%) alloy coating with a thickness of 30 μm was deposited on the surface of SUS304 stainless steel as a brazing filler metal to conduct brazing. The differential thermal analysis measurements indicate that the electrodeposited Ni-13.4Cr-11.6P alloy has a melting point of approximately 892 °C, which is almost consistent with that of the commercial BNi-7 filler metal. The microstructure, shear strength, and fracture mode of the brazed joint were investigated using an electron probe X-ray microanalyzer, a scanning electron microscope, an optical microscope, and a universal testing machine. The results showed that the brazed filler metal is filled between the SUS304 stainless steel plates without any flaws in the brazed seam. The P-containing phases, i.e., the Cr-P rich phase and the (Ni,Fe)(3)P phase, were formed in the brazed seam. The shear strength of the brazed joint obtained in this study is 59.0 MPa. The fracture occurs in the brazed filler zone, where the brittle P-containing phases are present. Galvanic current measurement results showed that the brazed Ni-13.4Cr-11.6P alloy coating has a better corrosion resistance than that of the brazed Ni-11P alloy coating, which can be attributed to the formation of a large amount of Ni-Fe solid solution and Cr-P rich phase in the top layer of the brazed Ni-13.4Cr-11.6P alloy coating.
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spelling pubmed-83477162021-08-08 Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings Liu, Shubin Shohji, Ikuo Kobayashi, Tatsuya Osanai, Katsuharu Ando, Tetsuya Hirohashi, Junichiro Wake, Tsunehito Inoue, Katsufumi Yamamoto, Hiroki Materials (Basel) Article In this study, an amorphous Ni-13.4Cr-11.6P (mass%) alloy coating with a thickness of 30 μm was deposited on the surface of SUS304 stainless steel as a brazing filler metal to conduct brazing. The differential thermal analysis measurements indicate that the electrodeposited Ni-13.4Cr-11.6P alloy has a melting point of approximately 892 °C, which is almost consistent with that of the commercial BNi-7 filler metal. The microstructure, shear strength, and fracture mode of the brazed joint were investigated using an electron probe X-ray microanalyzer, a scanning electron microscope, an optical microscope, and a universal testing machine. The results showed that the brazed filler metal is filled between the SUS304 stainless steel plates without any flaws in the brazed seam. The P-containing phases, i.e., the Cr-P rich phase and the (Ni,Fe)(3)P phase, were formed in the brazed seam. The shear strength of the brazed joint obtained in this study is 59.0 MPa. The fracture occurs in the brazed filler zone, where the brittle P-containing phases are present. Galvanic current measurement results showed that the brazed Ni-13.4Cr-11.6P alloy coating has a better corrosion resistance than that of the brazed Ni-11P alloy coating, which can be attributed to the formation of a large amount of Ni-Fe solid solution and Cr-P rich phase in the top layer of the brazed Ni-13.4Cr-11.6P alloy coating. MDPI 2021-07-28 /pmc/articles/PMC8347716/ /pubmed/34361414 http://dx.doi.org/10.3390/ma14154216 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
Liu, Shubin
Shohji, Ikuo
Kobayashi, Tatsuya
Osanai, Katsuharu
Ando, Tetsuya
Hirohashi, Junichiro
Wake, Tsunehito
Inoue, Katsufumi
Yamamoto, Hiroki
Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings
title Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings
title_full Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings
title_fullStr Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings
title_full_unstemmed Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings
title_short Microstructure and Properties of SUS304 Stainless Steel Joints Brazed with Electrodeposited Ni-Cr-P Alloy Coatings
title_sort microstructure and properties of sus304 stainless steel joints brazed with electrodeposited ni-cr-p alloy coatings
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8347716/
https://www.ncbi.nlm.nih.gov/pubmed/34361414
http://dx.doi.org/10.3390/ma14154216
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