Sintering aids in the consolidation of boron carbide (B4C) by the Plasma Pressure Compaction (P2C) method

被引：26
|
作者：
Klotz, BR [1 ]
Cho, KC [1 ]
Dowding, RJ [1 ]
机构：
[1] USA, Res Lab, Weapons Mat Res Directorate, AMSRD,ARL,WM,MB, Aberdeen Proving Ground, MD 21005 USA
来源：
MATERIALS AND MANUFACTURING PROCESSES | 2004年 / 19卷 / 04期
关键词：
boron carbide; powder consolidation; plasma pressure compaction; sintering aids; alumina; titanium diboride; carbon;
D O I：
10.1081/LMMP-200028083
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Boron carbide (B4C) powder has been densified by a novel method of powder consolidation known as Plasma Pressure Compaction ((PC)-C-2). The (PC)-C-2 technique allows for rapid consolidation of powder by Joule heating of the powder bed. Powder is placed in graphite dies, and uniaxial pressure and low-voltage, high-amperage (10V, 5000 amps maximum) direct current are applied to achieve densification. Pure B4C powder was consolidated at lower temperature and hold time to densities equal to those achieved by conventional hot pressing. With the addition of a small amount of alumina (Al2O3) as a sintering aid, densities as high as 97% theoretical were attained.
引用
收藏
页码：631 / 639
页数：9
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