Enhancement of thermal conductivity in diamond/Al composites through vacuum-pressure thermal diffusion sintering

doi:10.1088/1674-1056/adca9e

中国物理B ›› 2025, Vol. 34 ›› Issue (7): 70703-070703.doi: 10.1088/1674-1056/adca9e

Enhancement of thermal conductivity in diamond/Al composites through vacuum-pressure thermal diffusion sintering

Wenxia Zhang(张文霞)¹, Weixia Shen(沈维霞)¹, Chao Fang(房超)¹, Ye Wang(王烨)¹, Yuewen Zhang(张跃文)¹, Liangchao Chen(陈良超)¹, Qianqian Wang(王倩倩)¹, Kenan Li(黎克楠)^2,‡, Biao Wan(万彪)¹, and Zhuangfei Zhang(张壮飞)^1,†

1 Key Laboratory of Material Physics of Ministry of Education, School of Physics and Laboratory of Zhongyuan Light, Zhengzhou University, Zhengzhou 450052, China;
2 State Key Laboratory for High Performance Tools, Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd., Zhengzhou 450001, China

收稿日期:2025-01-22 修回日期:2025-04-07 接受日期:2025-04-09 出版日期:2025-06-18 发布日期:2025-06-18
通讯作者: Zhuangfei Zhang, Kenan Li E-mail:zhangzf@zzu.edu.cn;Likenan2004@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12274372 and 12274373) and the Major Science and Technology Projects of Henan Province (Grant No. 231100230300).

Enhancement of thermal conductivity in diamond/Al composites through vacuum-pressure thermal diffusion sintering

1 Key Laboratory of Material Physics of Ministry of Education, School of Physics and Laboratory of Zhongyuan Light, Zhengzhou University, Zhengzhou 450052, China;
2 State Key Laboratory for High Performance Tools, Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd., Zhengzhou 450001, China

Received:2025-01-22 Revised:2025-04-07 Accepted:2025-04-09 Online:2025-06-18 Published:2025-06-18
Contact: Zhuangfei Zhang, Kenan Li E-mail:zhangzf@zzu.edu.cn;Likenan2004@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12274372 and 12274373) and the Major Science and Technology Projects of Henan Province (Grant No. 231100230300).

摘要/Abstract

摘要： 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 μm diamond attain the highest TC value of 888.73 W$\cdot$m$^{-1}\cdot$K$^{-1}$ under sintering conditions of 650 $^\circ $C, 50 MPa, and 120 min - 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.

关键词: diamond/Al composites, thermal conductivity, interfacial bonding

Abstract: 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 μm diamond attain the highest TC value of 888.73 W$\cdot$m$^{-1}\cdot$K$^{-1}$ under sintering conditions of 650 $^\circ $C, 50 MPa, and 120 min - 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.

Key words: diamond/Al composites, thermal conductivity, interfacial bonding

中图分类号: (Electron, positron, and ion microscopes; electron diffractometers)

07.78.+s

12.38.Qk (Experimental tests) 07.30.-t (Vacuum apparatus) 02.30.Nw (Fourier analysis)

Wenxia Zhang(张文霞), Weixia Shen(沈维霞), Chao Fang(房超), Ye Wang(王烨), Yuewen Zhang(张跃文), Liangchao Chen(陈良超), Qianqian Wang(王倩倩), Kenan Li(黎克楠), Biao Wan(万彪), and Zhuangfei Zhang(张壮飞). Enhancement of thermal conductivity in diamond/Al composites through vacuum-pressure thermal diffusion sintering[J]. 中国物理B, 2025, 34(7): 70703-070703.

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Enhancement of thermal conductivity in diamond/Al composites through vacuum-pressure thermal diffusion sintering

Enhancement of thermal conductivity in diamond/Al composites through vacuum-pressure thermal diffusion sintering

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