刘永瑞,赵金良,焦宇佳.Chou模型在La(Fe,Si)13基磁性材料中的研究应用[J].稀有金属材料与工程,2020,49(12):4166~4171.[Liu Yong-rui,Zhao Jin-liang,Jiao Yu-jia.The research applications of Chou model in La (Fe, Si) 13-base magnetic materials[J].Rare Metal Materials and Engineering,2020,49(12):4166~4171.]
Chou模型在La(Fe,Si)13基磁性材料中的研究应用
投稿时间:2019-12-17  修订日期:2020-02-20
中文关键词:  La(Fe,Si)[sub_s]13[sub_e]基合金  磁热效应  吸氢动力学模型方程  特征反应时间
基金项目:
中文摘要:
      本文介绍了合金材料吸氢的基本原理及反应机理,主要利用稀土系储氢材料的吸氢模型方程研究了磁性制冷材料La(Fe,Si)13基合金的吸氢特性。通过Chou模型建立了La0.7Pr0.3Fe11.5Si1.5和La0.7Pr0.3Fe11.5Si1.5C0.2合金的吸氢反应分数与时间、温度的具体关系式,探究了两种合金材料的吸氢反应特性。根据模型方程,引入吸氢过程中的重要参数“特征反应时间”,得到在等温等压条件下的La0.7Pr0.3Fe11.5Si1.5和La0.7Pr0.3Fe11.5Si1.5C0.2合金的吸氢反应分数随时间的变化曲线。由模型方程还得到这两种合金吸氢反应分数与温度的关系曲线,曲线表明两种合金均表现出温度越高,特征反应时间越小,合金的吸氢速率越快,与实验得到的结果一致。
The research applications of Chou model in La (Fe, Si) 13-base magnetic materials
英文关键词:La(Fe,Si)13 compounds  magnetocaloric effect  hydrogen-absorbing dynamics model equation  characteristic absorption time
英文摘要:
      In this paper, we study a new model for predicting the reacted fraction of hydriding in La(Fe,Si)13 compounds. This model is simple and practical, which offers the reacted fraction of hydrogen absorption as a function of time and temperature explicitly. The basic principle and reaction mechanism of hydrogen absorption of alloy materials are briefly introduced. Besides, the “characteristic absorption time” as a new concept has been introduced, which directly reflects the hydrogen absorption rate of the alloy, and the smaller the characteristic reaction time, the faster the hydrogen absorption rate. Application of the Chou model, quantitatively exploring the hydrogen-absorbing reaction characteristics of La0.7Pr0.3Fe11.5Si1.5 and La0.7Pr0.3Fe11.5Si1.5C0.2 alloys. At the same time, the change of temperature will also affect the hydrogen absorption characteristics of the alloys, the relationship between the reacted fraction of hydrogen and the temperature is obtained by the model equation, indicating that the higher the temperature, the smaller the characteristic reaction time, the faster the hydrogen absorption rate of the alloys.
作者单位E-mail
刘永瑞 北京工业大学应用数理学院 864949958@qq.com 
赵金良 北京工业大学应用数理学院  
焦宇佳 北京工业大学应用数理学院  
摘要点击次数: 28
全文下载次数: 6
查看全文  查看/发表评论  
关闭