Coagulation of tungsten nanopowders under annealing in hydrogen

被引：0
|
作者：
Yu. V. Blagoveshchenskii
Yu. V. Levinskii
G. M. Vold’man
机构：
[1] Russian Academy of Sciences,Baikov Institute of Metallurgy and Material Science
[2] Lomonosov State Academy of Fine Chemical Technology,undefined
来源：
Russian Journal of Non-Ferrous Metals | 2008年 / 49卷
关键词：
Tungsten; Tungsten Oxide; Bulk Diffusion; Tungsten Particle; Free Path Length;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Coagulation of tungsten nanoparticles is investigated under annealing in hydrogen flow at 600–1000°C and duration of holding up to 1 h. It is established that the main mechanism of coagulation is the gasphase transport, and mass carriers are the WO3 · H2O molecules. Evaluative calculations of the coagulation rate are performed and their satisfactory agreement with experimental results is shown. Recommendations for optimization of conditions of thermal treatment of tungsten nanopowders are given.
引用
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页码：314 / 318
页数：4
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