Kinetics of Thermal Oxidation of Titanium Nitride Powder at Different Oxidizing Atmospheres

被引:20
|
作者
Hou, Xin-Mei [1 ,2 ]
Hu, Xiao-Jun [1 ,2 ]
Chou, Kuo-Chih [1 ]
机构
[1] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China
[2] Minist Educ, Key Lab Ecol & Recycle Met, Beijing 100083, Peoples R China
关键词
HIGH-TEMPERATURE OXIDATION; TIN THIN-FILMS; ISOTHERMAL OXIDATION; MODEL; MECHANISM; COATINGS; BEHAVIOR; OXYGEN; AIR;
D O I
10.1111/j.1551-2916.2010.04084.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The oxidation behavior of titanium nitride powder at different oxidizing atmospheres was investigated using thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy. Oxidation experiments have been carried out both in isothermal as well as nonisothermal modes. The nonisothermal oxidation result showed that the oxidation rate was affected by temperature, heating rate, and oxygen partial pressure. The isothermal oxidation result showed that the diffusion of oxygen through the oxide product layer to the oxide/titanium nitride interface was the rate-controlling step and the oxidation product became obviously porous at elevated temperature. In view of the oxidation kinetics, Chou model, which quantitatively expresses the oxidation weight increment as a function of time, heating rate, temperature, and oxygen partial pressure, has been employed and gotten a good agreement.
引用
收藏
页码:570 / 575
页数:6
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