Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sintering
Herein, graphite/copper (Gr/Cu) composites were fabricated by mechanical mixing and microwave sintering to investigate the effect of graphite volume fraction on the thermal conductivity (TC) and coefficient of thermal expansion (CTE) of the Gr/Cu composite. The TC and CTE of the composites were meas...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422012108 |
| _version_ | 1828383085661519872 |
|---|---|
| author | Zemin Wang Zhimeng Tang Lei Xu Zhaohui Han Jianhua Liu Libo Zhang |
| author_facet | Zemin Wang Zhimeng Tang Lei Xu Zhaohui Han Jianhua Liu Libo Zhang |
| author_sort | Zemin Wang |
| collection | DOAJ |
| description | Herein, graphite/copper (Gr/Cu) composites were fabricated by mechanical mixing and microwave sintering to investigate the effect of graphite volume fraction on the thermal conductivity (TC) and coefficient of thermal expansion (CTE) of the Gr/Cu composite. The TC and CTE of the composites were measured in the in-plane and through-plane directions. The obtained results revealed that the graphite volume fraction significantly affects the TC and CTE of Gr/Cu composites. A lower volume fraction led to higher thermal properties. The effect of thermal cycling on the thermal properties of metal matrix composites (MMCs) has remained largely unexplored. In this work, the effect of thermal cycling on the thermal properties of MMCs was investigated in a temperature range of −196°C/+200 °C. The thermal cycling resulted in a staged decrease of TC and a gradual increase in CTE. This could be mainly attributed to the CTE mismatch between the Cu matrix and the Gr phase. Observations by scanning electron microscopy (SEM) showed that thermal cycling created the micro-cracks and micro-voids in the composites, as well as the sliding and detachment of the Gr/Cu interface. The distribution of thermal stress and plastic strain during thermal cycling was simulated by the finite element method. The changes in TC and CTE are discussed regarding thermally induced stress. |
| first_indexed | 2024-12-10T04:43:39Z |
| format | Article |
| id | doaj.art-f81664387ce6412a972dbd5b0aad7a65 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-10T04:43:39Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f81664387ce6412a972dbd5b0aad7a652022-12-22T02:01:50ZengElsevierJournal of Materials Research and Technology2238-78542022-09-012013521363Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sinteringZemin Wang0Zhimeng Tang1Lei Xu2Zhaohui Han3Jianhua Liu4Libo Zhang5Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming 650093, PR China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming 650093, PR China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, PR ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming 650093, PR China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming 650093, PR China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, PR ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming 650093, PR China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming 650093, PR China; Corresponding author.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming 650093, PR China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming 650093, PR China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, PR China; Corresponding author.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming 650093, PR China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming 650093, PR ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming University of Science and Technology, Kunming 650093, PR China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming 650093, PR China; Corresponding author.Herein, graphite/copper (Gr/Cu) composites were fabricated by mechanical mixing and microwave sintering to investigate the effect of graphite volume fraction on the thermal conductivity (TC) and coefficient of thermal expansion (CTE) of the Gr/Cu composite. The TC and CTE of the composites were measured in the in-plane and through-plane directions. The obtained results revealed that the graphite volume fraction significantly affects the TC and CTE of Gr/Cu composites. A lower volume fraction led to higher thermal properties. The effect of thermal cycling on the thermal properties of metal matrix composites (MMCs) has remained largely unexplored. In this work, the effect of thermal cycling on the thermal properties of MMCs was investigated in a temperature range of −196°C/+200 °C. The thermal cycling resulted in a staged decrease of TC and a gradual increase in CTE. This could be mainly attributed to the CTE mismatch between the Cu matrix and the Gr phase. Observations by scanning electron microscopy (SEM) showed that thermal cycling created the micro-cracks and micro-voids in the composites, as well as the sliding and detachment of the Gr/Cu interface. The distribution of thermal stress and plastic strain during thermal cycling was simulated by the finite element method. The changes in TC and CTE are discussed regarding thermally induced stress.http://www.sciencedirect.com/science/article/pii/S2238785422012108Microwave sinteringGraphite/copper compositeThermal conductivityCoefficient of thermal expansionThermal cycling |
| spellingShingle | Zemin Wang Zhimeng Tang Lei Xu Zhaohui Han Jianhua Liu Libo Zhang Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sintering Journal of Materials Research and Technology Microwave sintering Graphite/copper composite Thermal conductivity Coefficient of thermal expansion Thermal cycling |
| title | Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sintering |
| title_full | Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sintering |
| title_fullStr | Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sintering |
| title_full_unstemmed | Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sintering |
| title_short | Thermal properties and thermal cycling stability of graphite/copper composite fabricated by microwave sintering |
| title_sort | thermal properties and thermal cycling stability of graphite copper composite fabricated by microwave sintering |
| topic | Microwave sintering Graphite/copper composite Thermal conductivity Coefficient of thermal expansion Thermal cycling |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422012108 |
| work_keys_str_mv | AT zeminwang thermalpropertiesandthermalcyclingstabilityofgraphitecoppercompositefabricatedbymicrowavesintering AT zhimengtang thermalpropertiesandthermalcyclingstabilityofgraphitecoppercompositefabricatedbymicrowavesintering AT leixu thermalpropertiesandthermalcyclingstabilityofgraphitecoppercompositefabricatedbymicrowavesintering AT zhaohuihan thermalpropertiesandthermalcyclingstabilityofgraphitecoppercompositefabricatedbymicrowavesintering AT jianhualiu thermalpropertiesandthermalcyclingstabilityofgraphitecoppercompositefabricatedbymicrowavesintering AT libozhang thermalpropertiesandthermalcyclingstabilityofgraphitecoppercompositefabricatedbymicrowavesintering |