Low-temperature synthesis of zirconium metal using ZrClb>4b>-2Mg reactive mixtures

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• 作者：Kyoung-Tae Park^a ; Hayk H. Nersisyan^b ; Huk-Hee Lee^d ; Sun-Ik Hong^c ; Nam-Chan Cho^e ; Jong-Hyeon Lee^a ; ^c ; ^{jonglee@cnu.ac.kr}
• 关键词：Combustion synthesis ; Zr sponge ; Magnesium ; zirconium chloride ; Kroll process
• 刊名：International Journal of Refractory Metals and Hard Materials
• 出版年：2012
• 期刊代码：91_02634368
• 类别：et
• 出版时间：July, 2012
• 卷：33
• 期：Complete
• 页码：33-37
• 文件大小：1259 K

摘要

In this paper, we describe an attractive and rapid process for preparing zirconium metal (sponge and powder) by reacting zirconium tetrachloride with magnesium powder. The process was carried out in the combustion synthesis (shortly CS) mode using a ZrClb>4b>-2Mg exothermic mixture, which provided a temperature of 1000-1100 掳C and a final product consisting of MgClb>2b> and Zr sponge. The separation of Zr sponge from the reaction product was accomplished by dissolving MgClb>2b> into warm acidified water. The average size of the Zr sponge particles ranged from about 1 mm to about 10 mm. Micrometer-sized (from 10 to 300 渭m) Zr powders were also obtained after mechanical processing of sponge. The characteristics of the Zr metal were established by X-ray diffraction, scanning electron microscopy, and inductively coupled plasma spectroscopy techniques.