Preparation and performance study of cBN/AlN/Al thermal conductive composites under high temperature and high pressure

IF 4.2 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-01-17 DOI:10.1016/j.ijrmhm.2025.107065

Xuefeng Yang , Dandan Li , Shuo Yang , Enhui Chen , Zhengxin Li

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引用次数: 0

Abstract

To solve the problem that traditional heat dissipation materials cannot meet the heat dissipation requirements of highly integrated electronic devices under high heat flux density, this paper uses the performance characteristics of cubic boron nitride with high thermal conductivity, high-temperature resistance, oxidation resistance, and good chemical stability, and uses a cubic press to prepare cBN/AlN/Al thermally conductive composites under high temperature and high-pressure conditions. The effects of the added phase system and content, sintering temperature, and other factors on the preparation and properties of cBN/AlN/Al thermally conductive composites were studied. The results show that under the sintering conditions of 5.0 GPa and 1500 °C, the cBN/AlN/Al thermal conductivity composites with the best performance are obtained by adding AlN/Al binder with a mass fraction of 20 %, with relative density and thermal conductivity of 98.8 % and 259 W/(m·K, respectively), which can be used as an ideal material for the preparation of heat dissipation substrates.

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来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.