| 微波法制备LaF3超细粉 |
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| 引用本文： | 韩元山,田彦文,王常珍,吴玉锋,安守勇,翟玉春.微波法制备LaF3超细粉[J].中国有色金属学报,2004,14(8):1426-1430. |
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| 作者姓名： | 韩元山 田彦文 王常珍 吴玉锋 安守勇 翟玉春 |
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| 作者单位： | 东北大学,材料与冶金学院,沈阳,110004 |
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| 摘 要： | 以La2O3、HCl为原料制备了LaCl3,并直接用双柱法,以LaCl3溶液同NH4HCO3溶液作用合成了粒度较小的La2(CO3)3粉体;以粉体La2(CO3)3为镧源与NH4F混合,在微波作用下经过固相化学反应,合成了LaF3超细粉;研究了不同分散剂等反应条件对合成LaF3超细粉的粒度和纯度的影响;通过X射线衍射(XRD)检测了不同途径合成的LaF3超细粉体的纯度,通过扫描电镜(SEM)、透射电镜(TEM)测试了不同途径合成的LaF3超细粉体颗粒的粒度和形貌.结果表明:用乙醇作为分散剂经微波加热固相合成得到了纯度较高,平均粒度约为50 nm的LaF3超细粉.
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| 关 键 词： | 微波 超细粉 |
| 文章编号： | 1004-0609(2004)08-1426-05 |
| 修稿时间： | 2003年12月2日 |
Preparation of superfine powder of LaF3 by microwave method |
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| HAN Yuan-shan,TIAN Yan-wen,WANG Chang-zhen,WU Yu-feng,AN Shou-yong,ZHAI Yu-chun.Preparation of superfine powder of LaF3 by microwave method[J].The Chinese Journal of Nonferrous Metals,2004,14(8):1426-1430. |
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| Authors: | HAN Yuan-shan TIAN Yan-wen WANG Chang-zhen WU Yu-feng AN Shou-yong ZHAI Yu-chun |
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| Abstract: | The LaF_3 superfine powder was synthesized. Superfine powder of La_2(CO_3)_3 was first synthesized by means of double pillar method in the reaction that LaCl_3 solution(got from La_2O_3, HCl as raw material ) reacted with NH_4HCO_3 solution.Then LaF_3 superfine powder was got by means of mixing solid La_2(CO_3)_3 and NH_4F under the microwave condition when the diluent of H_2O and C_2H_5OH were used.The influence of diluent (H_2O, C_2H_5OH) on grain degree or pure degree was discussed. The crystal purity of LaF_3 superfine powder was tested by XRD.The granularity and shape of LaF_3 superfine powder was tested by SEM and TEM. The results show that the purity of LaF_3 superfine powder is very well when used C_2H_5OH by means of microwave heat, and LaF_3 superfine powder is 50 nm in size in the direct solid synthesis. |
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| Keywords: | LaF3 |
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