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

页码：245 / 250

页数：6

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