Effect of TiC coating on the thermal conductivity and flexural strength of graphite/Cu composites with preferred orientation

被引：0

作者：

Zhu Y. ^{[1
,2
]}

Bai H. ^{[1
]}

Xue C. ^{[1
]}

Lv J. ^{[1
]}

Wang C. ^{[1
]}

Wang J. ^{[1
]}

Ma H. ^{[1
]}

Jiang N. ^{[1
]}

机构：

[1] Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo

[2] Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming

来源：

Fuhe Cailiao Xuebao | / 11卷 / 2523-2529期

关键词：

Coating; Flexural strength; Graphite/Cu composite material; Hot pressing sintering; Thermal conductivity;

D O I：

10.13801/j.cnki.fhclxb.20170401.002

中图分类号：

学科分类号：

摘要：

TiC layer was coated on the surface of the nature graphite flake (GF) by the molten salt method, and then GF/Cu composites were fabricated by vacuum hot-press sintering with TiC coated GF and Cu powder. The effects of volume fraction of GF and TiC coating on the thermal conductivity and flexural strength of the composites were investigated. A series of analysis results show that with the decrease of volume fraction of GF and the formation of TiC layer, the thermal conductivity of TiC-GF/Cu composites decreases in the direction of the parallel graphite layer while the trend of flexural strength is increased.When the volume fraction of GF is 70% of TiC-GF/Cu composites, the thermal conductivity of TiC-GF/Cu composites along the plane parallel to the graphite laminate decreases from 676 W/(m·K) to 526 W/(m·K), and the flexural strength of TiC coated GF/Cu composites is significantly enhanced from 52 MPa to 103 MPa.Meanwhile, microstructure features of TiC-GF/Cu composites further illustrate that TiC coated on the surface of GF plays an important role on the fracture model of GF/Cu composites. © 2017,Chinese Society for Composite Materials. All right reserved.

引用

页码：2523 / 2529

页数：6

共 21 条

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