Preparation of the gradient Mo layers on diamond grits by spark plasma sintering and their effect on Fe-based matrix diamond composites

被引：19

作者：

Chang, Rui ^{[1
]}

Zang, Jianbing ^{[1
]}

Wang, Yanhui ^{[1
]}

Yu, Yiqing ^{[2
]}

Lu, Jing ^{[2
]}

Xu, Xipeng ^{[2
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

[2] Huaqiao Univ, MOE Engn Res Ctr Brittle Mat Machining, Xiamen 361021, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 695卷

基金：

中国国家自然科学基金;

关键词：

Coating materials; Metal matrix composites; Microstructure; SEM; X-ray diffraction; THERMAL-CONDUCTIVITY; MOLYBDENUM COATINGS;

D O I：

10.1016/j.jallcom.2016.10.172

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：

The functionally graded material in micro-scale, surface treatment of particles, was successfully prepared by spark plasma sintering. In this study, coating the diamond grit with gradient Mo layer was carried out by treating the mixture of diamond grits and molybdenum powders in the SPS system. A Mo-Mo2C gradient coating with a thickness of 750 nm was prepared on the diamond grit at 870 degrees C for 60min. With the action of the gradient Mo layers, the compressive fracture strength and toughness impact of the diamond grits were improved by 20.7% and 5.9%, respectively. The gradient Mo layers improved the transverse rupture strength of Fe-based matrix diamond composites, and the interface combination strength between diamond grits and Fe-based matrix was increased by 349 MPa. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：70 / 75

页数：6

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