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Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics
Thermoplastics combine high freedom of design with economical mass production. Metallic coatings on thermoplastics enable power and signal transmission, shield sensitive parts inside of housings and can reduce the temperature in critical areas by functioning as a heat sink. The most used technical t...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7847715/ http://dx.doi.org/10.1007/s11666-020-01147-x |
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author | Bobzin, Kirsten Wietheger, Wolfgang Knoch, Martin Andreas |
author_facet | Bobzin, Kirsten Wietheger, Wolfgang Knoch, Martin Andreas |
author_sort | Bobzin, Kirsten |
collection | PubMed |
description | Thermoplastics combine high freedom of design with economical mass production. Metallic coatings on thermoplastics enable power and signal transmission, shield sensitive parts inside of housings and can reduce the temperature in critical areas by functioning as a heat sink. The most used technical thermoplastics are polyamides (PA), while the described use cases are often realized using Cu. Consequently, several studies tried to apply copper coatings on PA substrates via thermal spraying; so far, this combination is only feasible using an interlayer. In this study, a new approach to metallize thermoplastics via thermal spraying based on validated state-of-the-art predictions of the thermoplastics’ material response at relevant temperatures and strain rates is presented. Using these predictions, high velocity wire-arc spraying was selected as coating process. Furthermore, the process parameters were adapted to realize a continuous coating while also roughening the substrate during coating deposition. The resulting Cu coating on PA6 had a sufficiently high coating adhesion for post-treatment by grinding. The adhesion is achieved by in situ roughening during the coating application. The results indicate that different process parameters for initial layer deposition and further coating buildup are required due to the low thermal stability of PA6. |
format | Online Article Text |
id | pubmed-7847715 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-78477152021-02-01 Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics Bobzin, Kirsten Wietheger, Wolfgang Knoch, Martin Andreas J Therm Spray Tech Peer Reviewed Thermoplastics combine high freedom of design with economical mass production. Metallic coatings on thermoplastics enable power and signal transmission, shield sensitive parts inside of housings and can reduce the temperature in critical areas by functioning as a heat sink. The most used technical thermoplastics are polyamides (PA), while the described use cases are often realized using Cu. Consequently, several studies tried to apply copper coatings on PA substrates via thermal spraying; so far, this combination is only feasible using an interlayer. In this study, a new approach to metallize thermoplastics via thermal spraying based on validated state-of-the-art predictions of the thermoplastics’ material response at relevant temperatures and strain rates is presented. Using these predictions, high velocity wire-arc spraying was selected as coating process. Furthermore, the process parameters were adapted to realize a continuous coating while also roughening the substrate during coating deposition. The resulting Cu coating on PA6 had a sufficiently high coating adhesion for post-treatment by grinding. The adhesion is achieved by in situ roughening during the coating application. The results indicate that different process parameters for initial layer deposition and further coating buildup are required due to the low thermal stability of PA6. Springer US 2021-01-31 2021 /pmc/articles/PMC7847715/ http://dx.doi.org/10.1007/s11666-020-01147-x Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Peer Reviewed Bobzin, Kirsten Wietheger, Wolfgang Knoch, Martin Andreas Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics |
title | Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics |
title_full | Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics |
title_fullStr | Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics |
title_full_unstemmed | Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics |
title_short | Development of Thermal Spray Processes for Depositing Coatings on Thermoplastics |
title_sort | development of thermal spray processes for depositing coatings on thermoplastics |
topic | Peer Reviewed |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7847715/ http://dx.doi.org/10.1007/s11666-020-01147-x |
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