Explosive compaction and low-temperature sintering of alumina nanopowders

被引：18
|
作者：
Bukaemskii, A. A. [1 ]
Fedorova, E. N. [2 ]
机构：
[1] Forschungszentrum Julich, Inst Energy Res Safety Res & Reactor Technol, D-52425 Julich, Germany
[2] Siberian Fed Univ, Polytech Inst, Krasnoyarsk 660074, Russia
来源：
COMBUSTION EXPLOSION AND SHOCK WAVES | 2008年 / 44卷 / 06期
关键词：
explosive compaction; alumina; nanopowder; metastability; low-temperature sintering; nanocomposite; microhardness;
D O I：
10.1007/s10573-008-0108-8
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Physical aspects of explosive compaction of alumina nanopowders with different phase compositions are studied experimentally. Physical processes that occur during consolidation of nanoparticles under pulsed loading are considered. Conditions of retaining of the material nanostructure after compaction and subsequent low-temperature sintering are determined. Physicomechanical properties of explosive compacts and ceramics on the basis of these compacts are studied. A ceramic material characterized by a nanostructure (grain size of a parts per thousand 200 nm) and high values of density (97% of the theoretical value) and microhardness (up to 23.5 GPa) is obtained.
引用
收藏
页码：717 / 728
页数：12
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