| 亚微米氮化钛粉末燃烧合成研究的理论分析 |
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| 引用本文： | 林立,薛群基,刘惠文.亚微米氮化钛粉末燃烧合成研究的理论分析[J].兰州理工大学学报,1995(3). |
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| 作者姓名： | 林立 薛群基 刘惠文 |
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| 作者单位： | 甘肃工业大学机械工程一系，中科院兰州化学物理研究所 |
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| 摘 要： | 对氮化钛粉末的自蔓延高温还原合成过程进行了理论分析，热力学计算表明，反应最合适的温度范围为１４００～２０００Ｋ，这一温度可借ＭｇＯ稀释剂进行调节，使之达到抑制氮化镁副产物的形成和防止产物出现液相烧结的作用，从而获得粒径细小均匀的氮化钛合成粉末。动力学分析指出，在反应物中添加少量含氮化合物可以有效降低高氮压的临界条件。
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| 关 键 词： | 氮化钛 还原合成 镁热反应 粉末材料 理论分析 |
Theoretieal Analysis of Combustion Synthesis of Fine Titanium Nitrid Powders |
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| Lin Li.Theoretieal Analysis of Combustion Synthesis of Fine Titanium Nitrid Powders[J].Journal of Lanzhou University of Technology,1995(3). |
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| Authors: | Lin Li |
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| Abstract: | A theoretical analysis of the formation of fine TiN powders through the magne-sium thermit in a nitrogen atomosphere is presented.It is shown by thermodynamic calcula-tion that optimum temperature range for the synthesis process is suggested to be 1 400 to 2000 K. The latter can be adjusted by addtion of some MgO dillute for the purpose of restrain-ing the formation of by-product Mg_3N_2 and liquid phase sintering and ,henee,obtaining fineand an powders.It is pointed out by thermodynamic calculations that high critical pres-sure of nitrogen gas can be decreased greatly by additing a llittle nitrogen compounds in the reactants. |
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| Keywords: | titanium nitride reduction synthesis magnesium thermit powdered materials theoretic analysis |
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