Effect of Nano-SiC coating on the thermal properties and microstructure of diamond/Al composites

被引：17
作者：
Dong, Z. Y. [1 ,2 ]
Liu, X. Y. [1 ,3 ]
Wang, D. [1 ]
Wang, W. G. [1 ]
Xiao, B. L. [1 ]
Ma, Z. Y. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[3] Shenyang Ligong Univ, Coll Sci, Shenyang 110159, Peoples R China
来源：
COMPOSITES COMMUNICATIONS | 2023年 / 40卷
基金：
中国国家自然科学基金;
关键词：
Diamond; Aluminium matrix composite; Nanometer coating; Silicon carbide; Thermal conductivity; AL/DIAMOND COMPOSITES; PRESSURE INFILTRATION; COATED DIAMOND; CONDUCTIVITY; INTERFACE; TI; OPTIMIZATION; CONDUCTANCE; TEMPERATURE; RESISTANCE;
D O I：
10.1016/j.coco.2023.101564
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
A 20 nm SiC nanocoating was prepared on the surface of crushed diamond particles using a combination of sol -gel and in situ reaction methods. 50 vol% SiC-coated diamond particles reinforced 6061Al composites were fabricated by vacuum hot pressing method. Part of the SiC, with a crystallographic orientation relationship of (-11-1)Diamond//(-11-1)SiC and [-110]Diamond//[-110]SiC between SiC and diamond, remains at the interface, which reduces the mismatch of phonon vibration modes between the diamond and Al matrix. Thus, the inter-facial thermal conductance of the composite was greatly improved compared to that of composite prepared by diamond without coating. The thermal conductivity of the composite is 485 W/mK, which is the highest among the crushed diamond/Al composites and similar to that composite fabricated by single-crystal diamond. It is significant for the industrial application of diamond/Al composites that obtain a composite with well machin-ability and TC using the crushed diamond with nano-SiC coating.
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页数：6
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