Oscillatory pressure sintering of WC-Fe-Ni cemented carbides

被引：37

作者：

Gao, Yang ^{[1
]}

Gao, Ka ^{[1
]}

Fan, Lei ^{[1
]}

Yang, Fang ^{[1
]}

Guo, Xiaoqin ^{[1
]}

Zhang, Rui ^{[1
]}

An, Linan ^{[2
]}

机构：

[1] Zhengzhou Univ Aeronaut, Sch Mat Sci & Engn, Zhengzhou 450046, Peoples R China

[2] Univ Cent Florida, Dept Mat Sci & Engn, Orlando, FL 32816 USA

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 08期

关键词：

Oscillatory pressure sintering; Densification; Grain growth; Hardness; MECHANICAL-PROPERTIES; GRAIN-GROWTH; MICROSTRUCTURE; HARDMETALS;

D O I：

10.1016/j.ceramint.2020.02.040

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

WC-Fe-Ni cemented carbide was prepared by oscillatory pressure sintering (OPS) technique for the first time. Compared to HP, OPS can significantly improve densification and suppress grain growth of the material. The samples prepared by OPS exhibited higher hardness. The highest hardness obtained is > 19 GPa, much higher than those ever reported for the similar materials. The improvements in sintering and mechanical properties are likely due to that the oscillatory pressure enhanced particle rearrangement and plastic flow of the liquid binder phase, as well as generated defects. The results suggest that OPS is a very promising technique for preparing high performance cemented carbides.

引用

页码：12727 / 12731

页数：5