Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper components

In this study, we utilized material extrusion (MEX) molding additive manufacturing and debinding sintering technology to create pure copper parts with high density and exceptional conductivity. This was achieved using self-developed MEX raw materials with pure copper powder accounting for 60 vol %....

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Main Authors: Xiuhu Guo, Junnan Liu, Lu Li, Xiaoying Cui, Muhammad Dilawer Hayat, Peng Cao, Zhentao Yuan, Xiao Wang, Xiulin Chen
Format: Article
Language:English
Published: Elsevier 2025-03-01
Series:Journal of Materials Research and Technology
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Online Access:http://www.sciencedirect.com/science/article/pii/S223878542500095X
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author Xiuhu Guo
Junnan Liu
Lu Li
Xiaoying Cui
Muhammad Dilawer Hayat
Peng Cao
Zhentao Yuan
Xiao Wang
Xiulin Chen
author_facet Xiuhu Guo
Junnan Liu
Lu Li
Xiaoying Cui
Muhammad Dilawer Hayat
Peng Cao
Zhentao Yuan
Xiao Wang
Xiulin Chen
author_sort Xiuhu Guo
collection DOAJ
description In this study, we utilized material extrusion (MEX) molding additive manufacturing and debinding sintering technology to create pure copper parts with high density and exceptional conductivity. This was achieved using self-developed MEX raw materials with pure copper powder accounting for 60 vol %. The macroscopic and microscopic characteristics of green, debound and sintered parts were comprehensively characterized. The relationship between density and different sizes of nozzles and different layer heights was examined. After immersing the green body in an n-hexane solution at 40 °C for 12 h, a debinding rate of 95 % was achieved. The debounded parts were then sintered at 1050 °C in argon-hydrogen (H∼10 vol %) mixed gas. The results show that the copper parts produced with a 0.6 mm nozzle and 0.1 mm layer height exhibited the best performance, achieving a density greater than 98 %, conductivity of ∼93 % IACS, ultimate tensile strength of 198 MPa, and elongation at break of 34 %. This study offers a novel MEX printing approach for the additive manufacturing of pure copper, focusing on raw material formulation and optimizing experimental parameters.
format Article
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institution Kabale University
issn 2238-7854
language English
publishDate 2025-03-01
publisher Elsevier
record_format Article
series Journal of Materials Research and Technology
spelling doaj-art-ca98808874014941b00120eee0d38c862025-01-20T04:17:29ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013513231334Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper componentsXiuhu Guo0Junnan Liu1Lu Li2Xiaoying Cui3Muhammad Dilawer Hayat4Peng Cao5Zhentao Yuan6Xiao Wang7Xiulin Chen8Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, PR ChinaFaculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, PR ChinaFaculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, PR China; Corresponding author. Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China.Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, PR China; Corresponding author. Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China.Faculty of Engineering, University of Waikato, Hamilton, New ZealandFaculty of Engineering, University of Waikato, Hamilton, New ZealandCity College, Kunming University of Science and Technology, Kunming, 650051, PR China; Corresponding author.City College, Kunming University of Science and Technology, Kunming, 650051, PR ChinaSoloman Alloy New Material Co., Ltd, Changzhou, 215000, PR ChinaIn this study, we utilized material extrusion (MEX) molding additive manufacturing and debinding sintering technology to create pure copper parts with high density and exceptional conductivity. This was achieved using self-developed MEX raw materials with pure copper powder accounting for 60 vol %. The macroscopic and microscopic characteristics of green, debound and sintered parts were comprehensively characterized. The relationship between density and different sizes of nozzles and different layer heights was examined. After immersing the green body in an n-hexane solution at 40 °C for 12 h, a debinding rate of 95 % was achieved. The debounded parts were then sintered at 1050 °C in argon-hydrogen (H∼10 vol %) mixed gas. The results show that the copper parts produced with a 0.6 mm nozzle and 0.1 mm layer height exhibited the best performance, achieving a density greater than 98 %, conductivity of ∼93 % IACS, ultimate tensile strength of 198 MPa, and elongation at break of 34 %. This study offers a novel MEX printing approach for the additive manufacturing of pure copper, focusing on raw material formulation and optimizing experimental parameters.http://www.sciencedirect.com/science/article/pii/S223878542500095XMaterial extrusionCopperPrinting parameterConductivityDensity
spellingShingle Xiuhu Guo
Junnan Liu
Lu Li
Xiaoying Cui
Muhammad Dilawer Hayat
Peng Cao
Zhentao Yuan
Xiao Wang
Xiulin Chen
Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper components
Journal of Materials Research and Technology
Material extrusion
Copper
Printing parameter
Conductivity
Density
title Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper components
title_full Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper components
title_fullStr Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper components
title_full_unstemmed Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper components
title_short Polymer-metal powders melt extrusion printing to produce high-density, high-conductivity pure copper components
title_sort polymer metal powders melt extrusion printing to produce high density high conductivity pure copper components
topic Material extrusion
Copper
Printing parameter
Conductivity
Density
url http://www.sciencedirect.com/science/article/pii/S223878542500095X
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