| La2O3-Mo阴极材料热分析研究 |
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| 引用本文： | 王金淑,周美玲,左铁镛,张久兴,聂祚仁. La2O3-Mo阴极材料热分析研究[J]. 北京工业大学学报, 2002, 28(1): 103-106. DOI: 10.3969/j.issn.0254-0037.2002.01.025 |
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| 作者姓名： | 王金淑 周美玲 左铁镛 张久兴 聂祚仁 |
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| 作者单位： | 北京工业大学，材料学院新型功能材料教育部重点实验室，北京，100022 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);G1998061316; |
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| 摘 要： | 采用热分析、X射线衍射、扫描电镜等方法对Mo-La2O3阴极中La2O3与Mo2C的反应情况进行了研究.实验结果表明:La2O3与Mo2C在高温下可以发生化学反应,产生单质La和金属Mo;反应物存在状态不同,二者发生反应的温度不同. 粉末样品中二者反应温度(1203K)低于阴极丝中二者的反应温度(1533K).
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| 关 键 词： | 热分析 La2O3-Mo 阴极 价态 La |
| 文章编号： | 0254-0037(2001)04-0103-04 |
| 修稿时间： | 2001-02-20 |
Thermal Analysis of La2O3-Mo Cathode Materials |
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| WANG Jin-shu,ZHOU Mei-ling,ZUO Tie-yong,ZHANG Jiu-xing,ME Zuo-ren. Thermal Analysis of La2O3-Mo Cathode Materials[J]. Journal of Beijing Polytechnic University, 2002, 28(1): 103-106. DOI: 10.3969/j.issn.0254-0037.2002.01.025 |
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| Authors: | WANG Jin-shu ZHOU Mei-ling ZUO Tie-yong ZHANG Jiu-xing ME Zuo-ren |
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| Abstract: | The chemical reaction of La203 and Mo2C in La203-Mo cathode materials have been studied by thermal analysis, X-ray diffraction and scanning electron microscope. The experimental results show that La203 and Mo2C can have a chemical reaction at high temperature to produce metallic lanthanum and molybdenum. The reactants in different existing state react in different temperature. The reaction temperture(l 203 K) between powdered La203 and Mo2C is lower than that in La203-Mo cathodematerials (1 503 K). It is proved for the first time that the reacted metallic lanthanum appears at the surface of this kind of material at high temperature. |
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| Keywords: | thermal analysis La203-Mo cathode valence state La |
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