Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface
In this work, TiC coating was successfully deposited on a graphite flake surface via molten salt technique, for the purpose of promoting the interfacial connection between Cu and graphite flake. Vacuum hot pressing was then employed to prepare TiC-coated graphite flake/Cu composite. The results indi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/5/519 |
| _version_ | 1819237983417532416 |
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| author | Ren Zhang Xinbo He Qian Liu Xuanhui Qu |
| author_facet | Ren Zhang Xinbo He Qian Liu Xuanhui Qu |
| author_sort | Ren Zhang |
| collection | DOAJ |
| description | In this work, TiC coating was successfully deposited on a graphite flake surface via molten salt technique, for the purpose of promoting the interfacial connection between Cu and graphite flake. Vacuum hot pressing was then employed to prepare TiC-coated graphite flake/Cu composite. The results indicate that introducing TiC coating on graphite flake surface can evidently reduce the pores and gaps at the interface, resulting in a significant improvement on the bending strength. When the TiC-coated graphite flake content is 60 vol%, the bending strength is increased by 58% compared with the uncoated one. The coefficient of thermal expansion dropped from 6.0 ppm·K<sup>−1</sup> to 4.4 ppm·K<sup>−1</sup>, with the corresponding thermal conductivity as high as 571 W·m<sup>−1</sup>·K<sup>−1</sup>. The outstanding thermal conductivity, apposite coefficient of thermal expansion, as well as superior processability, make TiC-coated graphite flake/Cu composite a satisfactory electronic packaging material with vast prospect utilized in microelectronic industry. |
| first_indexed | 2024-12-23T13:29:00Z |
| format | Article |
| id | doaj.art-4a33da9257514fcb8c824c0f6ddd8d1b |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-23T13:29:00Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-4a33da9257514fcb8c824c0f6ddd8d1b2022-12-21T17:45:14ZengMDPI AGMetals2075-47012019-05-019551910.3390/met9050519met9050519Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake SurfaceRen Zhang0Xinbo He1Qian Liu2Xuanhui Qu3Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaHunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaIn this work, TiC coating was successfully deposited on a graphite flake surface via molten salt technique, for the purpose of promoting the interfacial connection between Cu and graphite flake. Vacuum hot pressing was then employed to prepare TiC-coated graphite flake/Cu composite. The results indicate that introducing TiC coating on graphite flake surface can evidently reduce the pores and gaps at the interface, resulting in a significant improvement on the bending strength. When the TiC-coated graphite flake content is 60 vol%, the bending strength is increased by 58% compared with the uncoated one. The coefficient of thermal expansion dropped from 6.0 ppm·K<sup>−1</sup> to 4.4 ppm·K<sup>−1</sup>, with the corresponding thermal conductivity as high as 571 W·m<sup>−1</sup>·K<sup>−1</sup>. The outstanding thermal conductivity, apposite coefficient of thermal expansion, as well as superior processability, make TiC-coated graphite flake/Cu composite a satisfactory electronic packaging material with vast prospect utilized in microelectronic industry.https://www.mdpi.com/2075-4701/9/5/519graphite flakecompositesinterfacethermal properties |
| spellingShingle | Ren Zhang Xinbo He Qian Liu Xuanhui Qu Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface Metals graphite flake composites interface thermal properties |
| title | Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface |
| title_full | Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface |
| title_fullStr | Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface |
| title_full_unstemmed | Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface |
| title_short | Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface |
| title_sort | improvement in mechanical and thermal properties of graphite flake cu composites by introducing tic coating on graphite flake surface |
| topic | graphite flake composites interface thermal properties |
| url | https://www.mdpi.com/2075-4701/9/5/519 |
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