| Mo-La_2O_3烧结坯间隙杂质的研究 |
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| 引用本文： | 王德志,刘心宇,周美玲.Mo-La_2O_3烧结坯间隙杂质的研究[J].稀有金属材料与工程,2000(4). |
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| 作者姓名： | 王德志 刘心宇 周美玲 |
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| 作者单位： | 长沙铁道学院!长沙410075(王德志)，中南工业大学!长沙410083(刘心宇)，北京工业大学!北京100022(周美玲) |
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| 摘 要： | 通过扫描电镜 (SEM)、电子探针 (EPMA)、X射线衍射 (XRD)及俄歇电子能谱 (AES)研究了 Mo- La2 O3烧结坯中的间隙杂质。结果表明 :L a2 O3的加入提高了烧结钼坯的抗弯强度和韧性。间隙杂质不仅存在于 Mo中 ,而且在 La2 O3粒子表面吸附 ,使晶界杂质浓度降低。
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| 关 键 词： | Mo La_2O_3 力学性能 杂质 |
Study of Interstitial Impurities in Sintered Mo-La_2O_3 Bars |
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| Wang Dezhi ,Liu Xinyu ,Zhou Meiling.Study of Interstitial Impurities in Sintered Mo-La_2O_3 Bars[J].Rare Metal Materials and Engineering,2000(4). |
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| Authors: | Wang Dezhi Liu Xinyu Zhou Meiling |
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| Affiliation: | Wang Dezhi 1,Liu Xinyu 2,Zhou Meiling 3 |
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| Abstract: | Interstitial impurities in sintered Mo La 2O 3 bars have been investigated systematically using SEM, EDAX, XRD and AES. It has been shown that the bend strength and ductility of the sintered Mo bars are greatly improved by the addition of La 2O 3. Interstitial impurities not only exist in the Mo grains, but also segregate to the surface of the La 2O 3 particles and in so doing decrease impurity concentration of the grain boundary. |
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| Keywords: | Mo La 2O 3 mechanical property impurity Biography: Wang Dezhi Ph D Electromechamic Engineering College Changsha Railway University Changsha 410075 P R China Tel:0086 731 5585211 55636 |
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