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| 1 | 高纯高致密度LaB_6多晶体的制备显示文摘La B6是一种优异的热电子阴极材料,高纯度高致密度多晶体是制备单晶体的关键原材料,而大尺寸单晶体是目前研究热点。采用B4C还原法制备La B6粉末,并经化学提纯处理,得到99.7%的高纯La B6粉末;采用分步加压工艺真空热压制备高致密度La B6多晶体。Φ50 mm多晶体相对致密度达到90%以上,Φ30 mm多晶体相对致密度达到95%以上,比传统热压工艺产品致密度高,能源节约10%以上。 | 成维 黄美松 苏正夫 王志坚 贾帅广 杨露辉 | 2015 | 中国稀土学报2015，33，3： | 4 |
| 2 | Current efficiency in electro-winning of lanthanum and cerium metals from molten chloride electrolytes显示文摘The objective of this study is to prepare lanthanum and cerium metals by fused salt electrolysis of their anhydrous chloride in molten media such as LiCl-KCl, NaCl-KCl, KCl, NaCl, and LiCl and to characterize the metal deposit by X-ray diffraction, energy dispersive X-ray fluorescence, and inductive coupled plasma-atomic emission spectroscopy. Deposit metal of purity more than 99 % was obtained in each of the experiments. The entire process starting from preparation of anhydrous lanthanum/cerium chloride to electrolysis yielding of metal deposits has been described. The effect of process parameters such as temperature, electrolyte composition, and current density on the current efficiency was studied. All these parameters were varied to get the highest current efficiency and metal yield. The major non-rare earth impurities with the deposit are found to be Fe, Cr, and Ni along with ~1×10-3 of total gaseous impurities. | Deepak Kumar Sahoo Harvinderpal Singh Nagaiyar Krishnamurthy | 2013 | Rare Metals2013，32，3： | 1 |
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