Nanocrystalline cemented carbides sintered by the pulse plasma method

被引：1
|
作者：
Michalski, A. [1 ]
Siemiaszko, D. [1 ]
Jaroszewicz, J. [1 ]
Rosinski, M. [1 ]
Psoda, M. [1 ]
机构：
[1] Warsaw Univ Technol, Dept Mat Sci & Engn, PL-02507 Warsaw, Poland
来源：
HIGH PRESSURE TECHNOLOGY OF NANOMATERIALS | 2006年 / 114卷
关键词：
pulse plasma sintering; PPS; WC; nanocrystalline; tungsten carbide;
D O I：
10.4028/www.scientific.net/SSP.114.245
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nanocrystalline WC-12wt.%Co was consolidated by Pulse Plasma Sintering (PPS) at various temperatures between 900 and 1200 degrees C for 6 minutes under a pressure of 60MPa. Cemented carbides sintered at 1100 degrees C have a relative density of 99%, a hardness of 2248HV30, the fracture toughness, K-IC=12.5 MPa*m(1/2), and have a structure containing 50nm WC crystallites. Increasing the sintering temperature to 1200 degrees C causes an increase in the size of the WC crystallite, size to about 1/2 110 nm, reduces the hardness to 2198HV30, and decreases the K-IC to 9.7 MPa*m(1/2).
引用
收藏
页码：245 / 250
页数：6
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