| 稀土镧、钇对蓝色氧化钨氢还原的影响 |
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| 引用本文： | 杨扬,周美玲,李汉广.稀土镧、钇对蓝色氧化钨氢还原的影响[J].稀有金属材料与工程,1994(5). |
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| 作者姓名： | 杨扬 周美玲 李汉广 |
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| 作者单位： | 中南工业大学材料系，北京工业大学材料系，中南工业大学材料系 |
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| 摘 要： | 借助于ＳＥＭ、Ｘ射线衍射技术及ＩＰＰ粉末粒度仪等系统地研究了稀土镧、钇对蓝色氧化钨（ＢＯ）氢还原的影响。结果表明：稀土元素镧、钇在蓝色氧化钨的还原钨粉中以氧化物及钨酸盐形式存在；还原后所得的钨粉颗粒大多为规则形状的多面体；稀土镧、钇和铝相似，强烈地抑制ＢＯ氢还原钨粉颗粒的长大，而且钇的作用更为显著。
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| 关 键 词： | 镧，钇，蓝色氧化钨，氢还原 |
Effect of La and Y on Hydrogenolysis of Blue W O xide |
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| Yang Yang.Effect of La and Y on Hydrogenolysis of Blue W O xide[J].Rare Metal Materials and Engineering,1994(5). |
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| Authors: | Yang Yang |
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| Abstract: | he effects of two kinds of rare earth elements La and Yon the size as well as the morphology of tungsten particles during hydrogenolysis were investigated by using SEM, X-ray difftaction and IP(Instrument-determination of powder and porous-material). The results indicated that in tungsten powders, the La and Y exist in the forms of oxides(La2O3, Y2O3) and tungstates (La2W2O9, Y6WO(12)) and the most of tungsten powders are regular polyhedrons. The existence of La and Y hinders drastically the growth of tungsten particles during hydrogenolysis of blue W oxide, and the effect of Y is greater than that of La. |
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| Keywords: | lanthanum yttrium blue W Oxide hydrogenolysis |
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