Interfacial structure evolution of Ti-coated diamond particle reinforced Al matrix composite produced by gas pressure infiltration

被引：71

作者：

Che, Zifan ^{[1
,2
]}

Wang, Qingxiao ^{[2
]}

Wang, Luhua ^{[1
]}

Li, Jianwei ^{[1
]}

Zhang, Hailong ^{[1
]}

Zhang, Yang ^{[1
,3
]}

Wang, Xitao ^{[1
]}

Wang, Jinguo ^{[2
]}

Kim, Moon J. ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Univ Texas Dallas, Dept Mat Sci & Engn, Richardson, TX 75080 USA

[3] China Acad Machinery Sci & Technol, Adv Mfg Technol Ctr, Beijing 100083, Peoples R China

来源：

COMPOSITES PART B-ENGINEERING | 2017年 / 113卷

基金：

中国国家自然科学基金;

关键词：

Metal-matrix composites (MMCs); Interface/interphase; Microstructure; Electron microscopy; ENHANCED THERMAL-CONDUCTIVITY; AL/DIAMOND COMPOSITES; DIAMOND/ALUMINUM COMPOSITES; C SYSTEM; ALUMINUM; MICROSTRUCTURE; STRENGTH; SURFACE; OPTIMIZATION; TEMPERATURE;

D O I：

10.1016/j.compositesb.2017.01.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interfacial structure evolution of Ti-coated diamond particle reinforced Al matrix composite produced by gas pressure infiltration has been studied systematically, aimed to provide an insight into the optimization of interfacial structure and properties of the composite. The results show that the Ti coating layer on diamond particle consists of three layers, including fine TiC grains, TiC columnar grains and dispersed Ti particles. During the infiltration of molten Al, the dispersed Ti particles react with Al to form Al3Ti particles in Al matrix, while both TiC layers remain unchanged. However, in the subsequent cooling process, Al4C3 particles are formed along the grain boundaries of TiC columnar grains as a result of Al diffusion and the subsequent Al/TiC reaction. By controlling the thickness of the TiC layers on diamond surface, an optimized thermal conductivity of 650 W m(-1) K-1 is obtained for the composite. The finding is beneficial to the understanding of diamond coating engineering in the diamond particle reinforced Al matrix composite. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：285 / 290

页数：6

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