Decarburization and improvement of ultra fine straight WC-8Co sintered via microwave sintering

被引：19

作者：

Bao Rui ^{[1
]}

Yi Jian-hong ^{[1
,2
]}

Peng Yuan-dong ^{[1
]}

Zhang Hao-ze ^{[1
]}

Li Ai-kun ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Kunming Univ Sci & Technol, Sch Mat Sci & Engn, Kunming 650093, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 04期

关键词：

cemented carbide; microwave sintering; carbon content; mechanical properties; MECHANICAL-PROPERTIES; GRAIN-GROWTH; CO; MICROSTRUCTURE;

D O I：

10.1016/S1003-6326(11)61256-9

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Cemented tungsten carbide with ultra fine grains was prepared via microwave sintering. eta phase (W3Co3C) was formed on the surface of the samples during the preparation process. Extra carbon black was premixed and the influence of carbon content on mechanical properties was studied. The results show that the maximum value of hardness and transverse rupture strength are HRA 93.2 and 3396 MPa respectively when the carbon black content is 0.45%. The microstructure investigated by SEM show that the WC grains growth mainly occurs during the early stage of microwave sintering by the coalescence of grains.

引用

页码：853 / 857

页数：5

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