Mo2C coating on diamond: Different effects on thermal conductivity of diamond/Al and diamond/Cu composites

被引：146

作者：

Ma, Songdi ^{[1
,2
]}

Zhao, Naiqin ^{[1
,2
,3
]}

Shi, Chunsheng ^{[1
,2
]}

Liu, Enzuo ^{[1
,2
,3
]}

He, Chunnian ^{[1
,2
,3
]}

He, Fang ^{[1
,2
]}

Ma, Liying ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

[2] Tianjin Univ, Tianjin Key Lab Composite & Funct Mat, Tianjin 300350, Peoples R China

[3] Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 402卷

基金：

中国国家自然科学基金;

关键词：

Thermal conductivity; Mo2C coating; Diamond/Cu composites; Diamond/AI composites; GAS-PRESSURE INFILTRATION; HEAT SINK APPLICATIONS; CU/DIAMOND COMPOSITES; AL/DIAMOND COMPOSITES; PROCESSING CONTROL; POWDER-METALLURGY; TI; MICROSTRUCTURE; PARTICLES; MATRIX;

D O I：

10.1016/j.apsusc.2017.01.078

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mo2C submicron layer coated diamond particles prepared by a molten salts route with Mo powder as the starting material were used as the filler in Cu- and Al- matrix composites. The microstructure and thermal property of the composites prepared by a vacuum pressure infiltration method were investigated. When introducing a 500nm thick Mo2C layer, the thermal conductivity of the composites with different matrix presented different performance. A high thermal conductivity (657 Wm(-1) K-1) was obtained in diamond/Cu composites owing to the improved interfacial bonding and lower interfacial thermal resistance, while the thermal conductivity of diamond/Al composites decreased from 553 W m(-1) K-1 to 218 Wm(-1) K-1 when introducing the Mo2C layer, which can be attributed to the formation of harmful granule-phase (Al12Mo) at the interface of diamond and aluminum. This work provides a promising approach to improve performance of diamond reinforced metal matrix composites by selecting carbide as an interface modifier. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：372 / 383

页数：12

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