LiCl-Urea两元体系离子液体的研究

Anhydrous LiCl and Urea were mixed according to different proportion.The temperature of phase transition was determined by melting point tube method while they still keep satisfactory conductivity.According to the analysis of its phase diagram,the eutectic point was 55℃ with the molar proportion of LiCl 0.225,while its electrochemistry window was about 2.4V and shows good behavior of ionic liquids.

Na_2WO_4在NaOH-H_2O系中的溶解度研究

系统地研究了29.5～170℃温度范围内Na_2WO_4在NaOH-H_2O系中的溶解度,绘制了Na_2WO_4-NaOH-H_2O三元系的平衡图。运用试验结果对NaOH分解钨矿物原料过程进行了分析讨论,指出了进一步改善过程的努力方向。

Co－Sm－Cu合金系中包共析转变Sm_2（Co、Cu）_（17）＋Sm（Co、Cu）_5﹦α－Co（Cu、Sm）＋Sm_2（Co、Cu）_7预测

本文以三元系相平衡规律为理论依据．结合文献资料中有关Ｃｏ－Ｓｍ－Ｃｕ系，Ｃｏ—Ｃｕ系和Ｃｏ－Ｓｍ系相图的实验数据，预测在Ｃｏ－Ｓｍ－Ｃｕ系方Ｃｏ区，约低于温度６００℃处．存在一个三元四相包共析转变：Ｓｍ_２（Ｃｏ、Ｃｕ）_１７十Ｓｍ（Ｃｏ、Ｃｕ）５ α—Ｃｏ（Ｃｕ、Ｓｍ）＋Ｓｍ２（Ｃｏ、Ｃｕ）７这个转变可能会导致相应的钴钐永磁材料的硬田性降低．