| 碳热还原法制取碳氮化钛的热力学原理分析 |
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| 引用本文： | 方民宪,彭金辉,陈厚生,陈德明.碳热还原法制取碳氮化钛的热力学原理分析[J].昆明理工大学学报(理工版),2006,31(5):6-13. |
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| 作者姓名： | 方民宪 彭金辉 陈厚生 陈德明 |
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| 作者单位： | 攀枝花钢铁研究院,四川,攀枝花,617000;昆明理工大学,材料与治金工程学院,云南,昆明,650093;昆明理工大学,材料与治金工程学院,云南,昆明,650093;攀枝花钢铁研究院,四川,攀枝花,617000 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 分析碳热还原法制取Ti(C,N)的热力学原理,结果表明,合成过程伴随着相变,当TiO2颗粒和C颗粒均匀混合时,还原反应主要依赖于CO/CO2传质的气固反应,当TiO2颗粒表面被C包膜时,主要是碳和钛氧化物之间的固固反应.升高温度有利于还原进行,钛氧化物的开始还原温度随气相中的CO分压降低而降低,但Ti(C,N)中的C,N含量则取决于温度和N2压力.
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| 关 键 词： | 碳氮化钛 碳热还原 热力学 |
| 文章编号： | 1007-855X（2006）05-0006-08 |
| 收稿时间： | 2005-10-21 |
| 修稿时间： | 2005-10-21 |
A Thermodynamics - Based Analysis of Making Titanium Carbonitride Through Carbon Thermal Reduction |
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| FANG Min-xian,PENG Jin-hui,CHEN Hou-sheng,CHEN De-ming.A Thermodynamics - Based Analysis of Making Titanium Carbonitride Through Carbon Thermal Reduction[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2006,31(5):6-13. |
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| Authors: | FANG Min-xian PENG Jin-hui CHEN Hou-sheng CHEN De-ming |
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| Affiliation: | 1. Panzhihua Iron and Steel Institute, Panzhihua,Siehuan 671000, China; 2. Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | Thermodynamic principle of making Ti(C,N) by carbon-heat reducing is analyzed.The result shows that synthesizing process is accompanied by phase change.When TiO_2 and carbon grain are mixed,the reductive reaction mainly depends on CO/CO_2 gas-solid transmitted reaction.When the surface of TiO_2 particle is enveloped by carbon,the reduction is mainly solid-solid reaction between carbon and titanic oxide.Raising temperature is conducive to reducing process.The starting-reduction temperature of titanic oxide goes down with the decrease of partial pressure of CO.But the content of C,N in Ti(C,N) depends on the temperature and partial pressure of N_2. |
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| Keywords: | titanium carbonitride carbon-thermal reduction thermodynamics |
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