Abstract
To acquire a well bonded interface between the copper and the diamond particles in diamond-copper matrix composites, an available process to apply a vapor deposited aluminum (Al) coating onto diamond particles was used to solve this interfacial problem. The diamond-copper matrix composites were prepared by spark plasma sintering (SPS) process and the effect of Al-coated diamond particles was demonstrated. The experimental results showed that the densification, interfacial bonding and thermal conductivity of Al-coated composites were evidently improved compared to those of the uncoated composites. A maximum thermal conductivity (TC) of 565 W/(m·K) was obtained in the coated composite containing 50vol% diamond particles sintered at 1 163 K. Additionally, the experimental data of thermal conductivity and coefficient of thermal expansion (CTE) were compared with the predictions from several theoretical models.
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Funded by the National Natural Science Foundation of China (21273192), the Foundation of He’nan Educational Committee (15B430009) and the Key Scientific Research Foundation of Xuchang University (2014077)
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Zhu, C., Zhu, X., Zhao, H. et al. Thermal physical properties of Al-coated diamond/Cu composites. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 30, 315–319 (2015). https://doi.org/10.1007/s11595-015-1146-1
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DOI: https://doi.org/10.1007/s11595-015-1146-1