Enhancement of thermal conductivity in diamond/Al composites through vacuum-pressure thermal diffusion sintering
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2025-04-09 |
| Journal | Chinese Physics B |
| Authors | Wenxia Zhang, Weixia Shen, Chao Fang, Ye Wang, Yuewen Zhang |
Abstract
Section titled āAbstractāAbstract Improving the thermal conductivity (TC) of diamond-metal composites has always been a significant challenge in the field of thermal management. In this paper, diamond/Al composites are systematically studied, and the influence of the holding time (10-120 min) on interface structure and TC is discussed. The results of this research show that long-term thermal diffusion sintering can achieve dense interfacial bonding in diamond/Al composites, enhancing their TC. Diamond/Al composites with 50 vol% of 900 Ī¼m diamond attain the highest TC value of 888.73 Wā m ā1 ā K ā1 under sintering conditions of 650 Ā°C, 50 MPa, and 120 min ā nearly 92% of the theoretical value predicted by the Maxwell model. This study establishes that high TC can be achieved through long-term thermal diffusion alone, without the need for complex diamond surface coating or substrate alloying.