Phase equilibria of the bismuth oxide-calcium oxide-copper oxide system in oxygen at 1 atm

摘要

phase equilibria in the bismuth oxide-calcium oxide-copper oxide system have been determined at 1 atm pressure in oxygen over the temperature range of 750°-1000 deg C. The phases found to be stable at 750 deg C are Bi_2CuO_4, CuO, Ca_2CuO_3, CaO, Bi_2Ca_2O_5, Bi_6Ca_4O_13, Bi_14Ca_5O_26, a rhom- Bohedral Bi-Ca oxide solid solution (Rh_ss), and a face- Centered cubic Bi-Ca oxide solid solution (Fcc_ss) that Includes Bi_2O_3.