Effect of Particle Size on the Oxidation of WC Powders during Heating

被引：21
|
作者：
Kurlov, A. S. [1 ]
Gusev, A. I. [1 ]
机构：
[1] Russian Acad Sci, Ural Div, Inst Solid State Chem, Ekaterinburg 620990, Russia
来源：
INORGANIC MATERIALS | 2011年 / 47卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
TUNGSTEN CARBIDE;
D O I：
10.1134/S0020168511020099
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxidation of tungsten carbide powders ranging in average particle size (D) over bar from 20 to 6000 nm has been studied by thermal analysis. Independent of particle size, the WC powders oxidize to the higher oxide WO(3). With decreasing particle size, the oxidation rate increases, and the exothermic peak temperature decreases. Empirical relations are presented for the peak temperature and activation energy of oxidation as functions of the particle size of the powders.
引用
收藏
页码：133 / 138
页数：6
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