Phase equilibria of the bismuth oxide-calcium oxide-copper oxide system in oxygen at 1 atm
Journal Article
·
· Journal of the American Ceramic Society
- Univ. of Houston, TX (United States)
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--1,000 C. The phases found to be stable at 750 C are Bi{sub 2}CuO{sub 4}, CuO, Ca{sub 2}CuO{sub 3}, CaO, Bi{sub 2}Ca{sub 2}O{sub 5}, Bi{sub 6}Ca{sub 4}O{sub 13}, Bi{sub 14}Ca{sub 5}O{sub 26}, a rhombohedral Bi-Ca oxide solid solution (Rh{sub ss}), and a face-centered cubic Bi-Ca oxide solid solution (Fcc{sub ss}) that includes Bi{sub 2}O{sub 3}. At 800 C, the stable phases are Bi{sub 2}CuO{sub 4}, CuO, Ca{sub 2}CuO{sub 3}, CaO, Bi{sub 2}Ca{sub 2}O{sub 5}, Bi{sub 6}Ca{sub 4}O{sub 13}, a hexagonal Bi-Ca oxide solid solution ({delta}{sub ss}), Rh{sub ss}, Fcc{sub ss}, and liquid. The phases found to be stable at 850 C are CuO, Ca{sub 2}CuO{sub 3}, CaO, Bi{sub 2}Ca{sub 2}O{sub 5}, Bi{sub 6}Ca{sub 4}O{sub 13}, Fcc{sub ss}, and liquid. The phases found to be stable at 900 C are CuO, Ca{sub 2}CuO{sub 3}, CaO, Bi{sub 2}Ca{sub 2}O{sub 5}, a body-centered cubic Bi-Ca oxide solid solution (Bcc{sub ss}), and liquid. The stable phases at 950 C are CuO, Ca{sub 2}CuO{sub 3}, CaO, and liquid. At 1,000 C, the stable phases are CuO, Ca{sub 3}Cu{sub 7}O{sub 10}, Ca{sub 2}CuO{sub 3}, CaO, and liquid.
- Sponsoring Organization:
- Texas State Government, Austin, TX (United States)
- OSTI ID:
- 512079
- Journal Information:
- Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 6 Vol. 80; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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