| PrCl3-BaCl2-NaCl三元体系相图的研究 |
| INVESTIGATION ON PHASE DIAGRAM OF PrCl3-BaCl2-NaCl TERNARY SYSTEM |
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| 摘要: <正> 众所周知,希土氯化物熔盐体系相图对于熔盐电解制备希土金属具有重要意义。PrCl3-NaCl与BaCl2-NaCl体系均属简单低共熔体系;PrCl3-BaCl2体系属于有一化合物Ba3PrCl8分解的相图类型。而PrCl3-BaCl2-NaCl三元体系尚未见文献报道。本文在重新考察各相关二元体系相图的基础上测定了本体系相图,共测定五个多温截面,其分布见图1。 |
| 关键词: 相图 PrCl PrCl-BaCl2-NaCl三元体系 |
| 基金项目: |
| Abstract: The phase diagram of PrCl3-BaCl2-NaCl ternary system has been investigated by means of DTA and X-ray diffraction analysis.It was found that there are five surfaces corresponding to the primary crystallization of PrCl3,α-BaCl2, β-BaCl2, NaCl and Ba3PrCl8 respectively, and six univariant lines related to the secondary crystallization in this system.The temperature of the ternary eutectic, composed of 68.5wt.% PrCl3, 1.5wt.% BaCl2, 30.0wt.% NaCl, was determined to be 451℃.The temperature of the ternary peritectic, composed of 62.0 wt.% PrCl3, 24.0wt.% NaCl, 14.0wt.% BaCl2, was observed to be 510℃.A compound,formed in the solid state,was found.The temperature of decomposition occurs at 425℃. |
| Keywords: phase diagram praseodymium chloride PrCl3-BaCl2-NaCl ternary system |
| 投稿时间：1987-08-24 |
| 摘要点击次数: 2506 |
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| 郑朝贵,徐征,黄竹山,乔芝郁,叶于浦.PrCl3-BaCl2-NaCl三元体系相图的研究[J].无机化学学报,1988,4(4):134-139. |
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