کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1637679 1517017 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identification of structural entities in NdF3-LiF melts with cryoscopic method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Identification of structural entities in NdF3-LiF melts with cryoscopic method
چکیده انگلیسی

Nd-F species in NdF3-LiF melts were studied using cryoscopic method. Liquidus temperatures of melts of various compositions were determined by differential thermal analysis(DTA). Based on the different model calculations, NdF4− was identified as the most likely Nd-F entity in the melts in which the mole fraction of NdF3 was lower than 20%, considering only one single Nd species in the melt, and which was formed in accordance with Temkin model or Flood model. Then, activities of different components in the melts were researched. The results show that activity of LiF decreases, and that of NdF3 increases with increasing the mole fraction of NdF3. The value of activity coefficient of NdF3 is higher than 1, and that of LiF is lower than 1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 20, Issue 12, December 2010, Pages 2387-2391