1. High thermal conductive diamond/Ag–Ti composites fabricated by low-cost cold pressing and vacuum liquid sintering techniques
- Author
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Chun-Long Lu, Shih-Chien Yen, Chih-Yu Chung, Su-Jien Lin, and Mu-Tse Lee
- Subjects
Pressing ,Materials science ,Mechanical Engineering ,Composite number ,Sintering ,Diamond ,General Chemistry ,engineering.material ,Thermal expansion ,Electronic, Optical and Magnetic Materials ,Thermal conductivity ,Materials Chemistry ,engineering ,Wetting ,Electrical and Electronic Engineering ,Composite material ,Electrical conductor - Abstract
Diamond/Ag–Ti composites were fabricated by a low-cost liquid sintering technique. The Ti addition can effectively improve wetting and promote penetration in composite pores during liquid sintering. The interface structure of the diamond/Ag–Ti composite was identified as Ag/TiC/Ag–Ti/diamond. A high thermal conductivity of 719 W/mK was obtained for the 50 vol.% diamond/Ag-1 at.% Ti composite. Using a bimodal mixture (60 vol.% 150 μm + 10 vol.% 50 μm diamond/Ag-2 at.% Ti composite), a low coefficient of thermal expansion of 6.3 × 10 − 6 /K still with high thermal conductivity of 687 W/mK was achieved. These composites have potential applications for thermal management of high integration electronic devices.
- Published
- 2014