BaO-BaF2融体中のりん酸塩およびりん化物の熱力学
1985 年 71 巻 6 号 p. 687-692
詳細
1985 年 71 巻 6 号 p. 687-692
The thermodynamics of phosphate and phosphide in BaO-BaF2 melts was studied by equilibrating the melts in a graphite boat with CO-Ar mixtures and Ag-P alloys between 1 200°C and 1 450°C.
The concentration dependence of both constituents on the partial pressure of phosphorus and oxygen, the melt composition and temperature was determined.
Comparing with the CaO-CaF2 system previously reported by the authors, BaO-BaF2 melts were found to have a larger capacity for phosphate by an order of magnitude but nearly the same one for phosphide.
It is concluded that BaO-BaF2 melts are very effective in removing phosphorus from other systems under either oxidizing or reducing conditions.
