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Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer
Welding between an AuNi(9) microwire and Au microlayer is of great importance for fabricating electrical contact structures for high precision inertial devices, satellite slip ring brushes, robots, etc. In this paper, the achievement of parallel micro-gap resistance welding (PMRW) with 200-μm AuNi(9...
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/PMC7824560/ https://www.ncbi.nlm.nih.gov/pubmed/33401612 http://dx.doi.org/10.3390/mi12010051 |
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author | Zhang, He Wang, Shang Wu, Bingying Zhang, Weiwei Hang, Chunjin Tian, Yanhong |
author_facet | Zhang, He Wang, Shang Wu, Bingying Zhang, Weiwei Hang, Chunjin Tian, Yanhong |
author_sort | Zhang, He |
collection | PubMed |
description | Welding between an AuNi(9) microwire and Au microlayer is of great importance for fabricating electrical contact structures for high precision inertial devices, satellite slip ring brushes, robots, etc. In this paper, the achievement of parallel micro-gap resistance welding (PMRW) with 200-μm AuNi(9) microwires on a 3-μm Au layer was presented. The study on the orthogonal design of the experiment was carried out. The effect of the process parameters (welding current, welding time, and welding pressure) was discussed in reference to the morphologies and tensile force of the joint using range analysis. It is shown that too much or too little heat input will decrease the welding performance. A group of optimized process parameters (0.275 kA welding current, 3 ms welding time, and 28.7 N welding pressure) was obtained. During the welding process, the dynamic resistance of the whole welding system was measured, which can reflect the welding quality. Finite element simulation is utilized to calculate the welding temperature. The highest temperature was located in the center area of the AuNi(9) microwire, reaching 1397.2 °C, which is higher than the melting point of AuNi(9). By contrast, the highest temperature for the pad was 826.47 °C (lower than the melting point of Au). Hence, under optimized process parameters, a transient interfacial reaction between the liquid AuNi(9) microwire and solid Au pad occurred, and the strength of the welded joint reached 5.54 N. |
format | Online Article Text |
id | pubmed-7824560 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-78245602021-01-24 Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer Zhang, He Wang, Shang Wu, Bingying Zhang, Weiwei Hang, Chunjin Tian, Yanhong Micromachines (Basel) Article Welding between an AuNi(9) microwire and Au microlayer is of great importance for fabricating electrical contact structures for high precision inertial devices, satellite slip ring brushes, robots, etc. In this paper, the achievement of parallel micro-gap resistance welding (PMRW) with 200-μm AuNi(9) microwires on a 3-μm Au layer was presented. The study on the orthogonal design of the experiment was carried out. The effect of the process parameters (welding current, welding time, and welding pressure) was discussed in reference to the morphologies and tensile force of the joint using range analysis. It is shown that too much or too little heat input will decrease the welding performance. A group of optimized process parameters (0.275 kA welding current, 3 ms welding time, and 28.7 N welding pressure) was obtained. During the welding process, the dynamic resistance of the whole welding system was measured, which can reflect the welding quality. Finite element simulation is utilized to calculate the welding temperature. The highest temperature was located in the center area of the AuNi(9) microwire, reaching 1397.2 °C, which is higher than the melting point of AuNi(9). By contrast, the highest temperature for the pad was 826.47 °C (lower than the melting point of Au). Hence, under optimized process parameters, a transient interfacial reaction between the liquid AuNi(9) microwire and solid Au pad occurred, and the strength of the welded joint reached 5.54 N. MDPI 2021-01-03 /pmc/articles/PMC7824560/ /pubmed/33401612 http://dx.doi.org/10.3390/mi12010051 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 Zhang, He Wang, Shang Wu, Bingying Zhang, Weiwei Hang, Chunjin Tian, Yanhong Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer |
title | Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer |
title_full | Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer |
title_fullStr | Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer |
title_full_unstemmed | Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer |
title_short | Ultrafast Parallel Micro-Gap Resistance Welding of an AuNi(9) Microwire and Au Microlayer |
title_sort | ultrafast parallel micro-gap resistance welding of an auni(9) microwire and au microlayer |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7824560/ https://www.ncbi.nlm.nih.gov/pubmed/33401612 http://dx.doi.org/10.3390/mi12010051 |
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