Phase diagram of the BaO(BaCO3)-CaO-CuO system

Yoshihiro Kusano, Takeyuki Kikuchi, Jun Takada, Minoru Fukuhara, Yasunori Ikeda, Zenji Hiroi

Research output: Contribution to journalArticle

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Abstract

The phase diagram of the BaO(BaCO3)-CaO-CuO system, especially in the barium-rich region at 900°C in air, was studied. Two new different oxycarbonates were observed: Ba8Ca16/15Cu64/15O11.20(CO 3)2.66 and a solid-solution series with a chemical composition of Ba2Cax+yCu1+(x/2)-yO2+δCO 3)1-z (where 0 ≤ x ≤ 2/39 and 0 ≤ y ≤ 16x/5). The oxycarbonate solid solution was formed in a region of the compositional triangle Ba:Ca:Cu (in moles) = (2:0:1)-(39:l:20)-(65:7:28). The solid-solution structure had P4/mmm symmetry, with lattice parameters a ≈ ap and c ≈ 2ap, where ap represents the perovskite cell. The Ba8Ca16/15Cu64/15O11.20(CO 3)2.66 compound, which had Pm3m symmetry with a lattice parameter a = 0.8116(2) nm, had no chemical-solubility range.

Original languageEnglish
Pages (from-to)1329-1332
Number of pages4
JournalJournal of the American Ceramic Society
Volume82
Issue number5
Publication statusPublished - 1999

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Systems (metallurgical)
Carbon Monoxide
Phase diagrams
Solid solutions
Lattice constants
Barium
Perovskite
Solubility
Air
Chemical analysis

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Kusano, Y., Kikuchi, T., Takada, J., Fukuhara, M., Ikeda, Y., & Hiroi, Z. (1999). Phase diagram of the BaO(BaCO3)-CaO-CuO system. Journal of the American Ceramic Society, 82(5), 1329-1332.

Phase diagram of the BaO(BaCO3)-CaO-CuO system. / Kusano, Yoshihiro; Kikuchi, Takeyuki; Takada, Jun; Fukuhara, Minoru; Ikeda, Yasunori; Hiroi, Zenji.

In: Journal of the American Ceramic Society, Vol. 82, No. 5, 1999, p. 1329-1332.

Research output: Contribution to journalArticle

Kusano, Y, Kikuchi, T, Takada, J, Fukuhara, M, Ikeda, Y & Hiroi, Z 1999, 'Phase diagram of the BaO(BaCO3)-CaO-CuO system', Journal of the American Ceramic Society, vol. 82, no. 5, pp. 1329-1332.
Kusano Y, Kikuchi T, Takada J, Fukuhara M, Ikeda Y, Hiroi Z. Phase diagram of the BaO(BaCO3)-CaO-CuO system. Journal of the American Ceramic Society. 1999;82(5):1329-1332.
Kusano, Yoshihiro ; Kikuchi, Takeyuki ; Takada, Jun ; Fukuhara, Minoru ; Ikeda, Yasunori ; Hiroi, Zenji. / Phase diagram of the BaO(BaCO3)-CaO-CuO system. In: Journal of the American Ceramic Society. 1999 ; Vol. 82, No. 5. pp. 1329-1332.
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