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| 燃烧合成Mg2Ni储氢合金的热力学分析 | |
| 引用本文： | 陈秀娟,王永庆,夏天东,刘学龙,赵文军,刘天佐.燃烧合成Mg2Ni储氢合金的热力学分析[J].兰州理工大学学报,2005,31(6):32-35. |
| 作者姓名： | 陈秀娟 王永庆 夏天东 刘学龙 赵文军 刘天佐 |
| 作者单位： | 1. 兰州理工大学,材料科学与工程学院,甘肃,兰州,730050;兰州理工大学,甘肃省有色金属新材料国家重点实验室,甘肃,兰州,730050 2. 中国石油兰州石化公司,甘肃,兰州,730060 3. 兰州理工大学,材料科学与工程学院,甘肃,兰州,730050 |
| 基金项目： | 本文得到兰州市科技计划项目(05-1-15)的支持. |
| 摘 要： | 从理论上对燃烧合成Mg2Ni反应体系在不同预热温度下的绝热温度及Mg2Ni的熔化率进行了计算．研究结果表明，反应的绝热温度随预热温度的升高而提高，而且二者的差值基本为一定值．在一定的预热温度下产物Mg2Ni将熔化，其熔化率随预热温度的升高或稀释剂含量的减少而增加．添加适量的稀释剂有助于降低反应的绝热温度、减小Mg2Ni的熔化分解从而得到高纯的Mg2Ni． |
| 关 键 词： | 燃烧合成 Mg2Ni 热力学 绝热温度 稀释剂 |
| 文章编号： | 1000-5889(2005)06-0032-04 |
| 收稿时间： | 2005-03-16 |
| 修稿时间： | 2005年3月16日 |
Thermodynamic analysis of combustion synthesis of hydrogen storage alloy Mg2Ni |
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| CHEN Xiu-juan,WANG Yong-qing,XIA Tian-dong,LIU Xue-long,ZHAO Wen-jun,LIU Tian-zuo.Thermodynamic analysis of combustion synthesis of hydrogen storage alloy Mg2Ni[J].Journal of Lanzhou University of Technology,2005,31(6):32-35. | |
| Authors: | CHEN Xiu-juan WANG Yong-qing XIA Tian-dong LIU Xue-long ZHAO Wen-jun LIU Tian-zuo |
| Institution: | 1. College of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China; 2. State Key Lab. oI Advanced New Non-ferrous Materials, Gansu Province, Lanzhou Univ. of Tech. , Lanzhou 730050, China; 3. Lanzhou Petrochemical Company of Petro Chain, Lanzhou 730060, China |
| Abstract: | The adiabatic temperature ad~ and melting rate Rm of Mg2Ni in the combustion synthesis of the intermetallic phase Mg2Ni at different preheating temperatures were calculated theoretically. The results show that,with the preheating temperature increasing, the adiabatic temperature also increases and their difference is approximately a fixed value. When the preheating temperature exceeds a definite value, Mg2Ni begins to melt,and the higher the preheating temperature is or the less the amount of diluents is,the more the melting rate Rm of Mg2Ni is. Addtion of some moderate diluents is helpful to reduce the adiabatic temperature T.d and reduce the melt of Mg2Ni, so that a pure product can be obtained. |
| Keywords: | combustion synthesis Mg2Ni thermodynamics adiabatic temperature diluent |
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