The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure Infiltration
The high-volume fraction SiC/Al composite is the new type of electronic packaging material, which plays an important role in the field of high-power integrated circuits. In this study, SiC/Al composites with high-volume fraction of SiC particles were prepared by vacuum pressure infiltration. The inf...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/11/5/515 |
| _version_ | 1827693186223439872 |
|---|---|
| author | Mengqin Chen Yuelong Bai Zhifeng Zhang Haidong Zhao |
| author_facet | Mengqin Chen Yuelong Bai Zhifeng Zhang Haidong Zhao |
| author_sort | Mengqin Chen |
| collection | DOAJ |
| description | The high-volume fraction SiC/Al composite is the new type of electronic packaging material, which plays an important role in the field of high-power integrated circuits. In this study, SiC/Al composites with high-volume fraction of SiC particles were prepared by vacuum pressure infiltration. The influence of SiC particle size and NH<sub>4</sub>HCO<sub>3</sub> on the pores in the preform was explored, aiming to accurately adjust the volume fraction of SiC to meet the thermal performance requirements in different fields. In addition, the preform was infiltrated with different Al alloys, and the relationship between the porosity and thermal conductivity of SiC/Al was studied. For the SiC preform, the volume fraction of SiC can be adjusted regularly when 12 μm and 100 μm SiC particles are mixed in different proportions, and the volume fraction reaches the maximum when the proportion of coarse particles is about 77%. NH<sub>4</sub>HCO<sub>3</sub> is conducive to the connectivity of pores in the preform, and about 40 vol.% of NH<sub>4</sub>HCO<sub>3</sub> can effectively increase the porosity of the preform. Thermal conductivity is sensitive to the porosity of composites, especially in the range of 2.5–4.5%. A simple application of the Hasselman–Johnson model and a new thermal conductivity model, λ<sub>d</sub>, established in this article, offer a good agreement with the experimental results. |
| first_indexed | 2024-03-10T11:39:10Z |
| format | Article |
| id | doaj.art-26f019165bb24f7b823058cba3af4483 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T11:39:10Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-26f019165bb24f7b823058cba3af44832023-11-21T18:35:28ZengMDPI AGCrystals2073-43522021-05-0111551510.3390/cryst11050515The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure InfiltrationMengqin Chen0Yuelong Bai1Zhifeng Zhang2Haidong Zhao3National Engineering & Technology Research Center for Nonferrous Metals Composites, GRINM Group Co., Ltd., Beijing 100088, ChinaNational Engineering & Technology Research Center for Nonferrous Metals Composites, GRINM Group Co., Ltd., Beijing 100088, ChinaNational Engineering & Technology Research Center for Nonferrous Metals Composites, GRINM Group Co., Ltd., Beijing 100088, ChinaNational Engineering Research Center for Metallic Materials Net-Shape Forming, South China University of Technology, Guangzhou 510641, ChinaThe high-volume fraction SiC/Al composite is the new type of electronic packaging material, which plays an important role in the field of high-power integrated circuits. In this study, SiC/Al composites with high-volume fraction of SiC particles were prepared by vacuum pressure infiltration. The influence of SiC particle size and NH<sub>4</sub>HCO<sub>3</sub> on the pores in the preform was explored, aiming to accurately adjust the volume fraction of SiC to meet the thermal performance requirements in different fields. In addition, the preform was infiltrated with different Al alloys, and the relationship between the porosity and thermal conductivity of SiC/Al was studied. For the SiC preform, the volume fraction of SiC can be adjusted regularly when 12 μm and 100 μm SiC particles are mixed in different proportions, and the volume fraction reaches the maximum when the proportion of coarse particles is about 77%. NH<sub>4</sub>HCO<sub>3</sub> is conducive to the connectivity of pores in the preform, and about 40 vol.% of NH<sub>4</sub>HCO<sub>3</sub> can effectively increase the porosity of the preform. Thermal conductivity is sensitive to the porosity of composites, especially in the range of 2.5–4.5%. A simple application of the Hasselman–Johnson model and a new thermal conductivity model, λ<sub>d</sub>, established in this article, offer a good agreement with the experimental results.https://www.mdpi.com/2073-4352/11/5/515SiC/Alvolume fractioninfiltrationporethermal conductivity |
| spellingShingle | Mengqin Chen Yuelong Bai Zhifeng Zhang Haidong Zhao The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure Infiltration Crystals SiC/Al volume fraction infiltration pore thermal conductivity |
| title | The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure Infiltration |
| title_full | The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure Infiltration |
| title_fullStr | The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure Infiltration |
| title_full_unstemmed | The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure Infiltration |
| title_short | The Preparation of High-Volume Fraction SiC/Al Composites with High Thermal Conductivity by Vacuum Pressure Infiltration |
| title_sort | preparation of high volume fraction sic al composites with high thermal conductivity by vacuum pressure infiltration |
| topic | SiC/Al volume fraction infiltration pore thermal conductivity |
| url | https://www.mdpi.com/2073-4352/11/5/515 |
| work_keys_str_mv | AT mengqinchen thepreparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration AT yuelongbai thepreparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration AT zhifengzhang thepreparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration AT haidongzhao thepreparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration AT mengqinchen preparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration AT yuelongbai preparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration AT zhifengzhang preparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration AT haidongzhao preparationofhighvolumefractionsicalcompositeswithhighthermalconductivitybyvacuumpressureinfiltration |