Фазовая диаграмма системы Bi-Ca

К оглавлению: Другие диаграммы (Others phase diargams)


Bi-Ca (Bismuth-Calcium) Editor The Bi-Ca phase diagram is based primarily on [63Smi], with modifications regarding the stoichiometry of intermediate compounds. According to crystal structure investigations, the compound with the highest melting point is neither "Bi2Ca3" [31Kur, 62Hos, 63Smi] nor "Bi4Ca7" [61Bra], but Bi3Ca5 [73Mar] . [76Del] showed the existence of Bi10Ca11 instead of "BiCa" as reported by [ 63Smi]. BiCa2 reported by [74Eis] has never been identified by other investigators. Spurious thermal arrest data points observed by [63Smi] in the composition range between 0 to ~70 to 100 at.% Ca may be related to BiCa2. Bi3Ca melts peritectically at 505 с 2 C [31Kur, 62Hos, 63Smi]. Its crystal structure is unknown. Diagrams proposed earlier by [31Kur] and [62Hos] were only in fair agreement with that of [63Smi].<294>H.O. 31Kur: E. Kurzyniec, Bull. Intern. Acad. Polon. Sci., A, 31-58 (1931) in German. 61Bra: G. Brauer and O. Muller, Angew. Chem., 73(5), 169 (1961) in German. 62Hos: S. Hosel, Z. Phys. Chem. (Leipzig), 219, 205-223 (1962) in German. 63Smi: M.P. Smirnov and V.E. Rudnichenko, Zh. Neorg. Khim., 8(6), 1402-1407 ( 1963) in Russian; TR: Russ. J. Inorg. Chem., 8(6), 728-732 (1963). 73Mar: M. Martinez-Ripoll, A. Haase, and G. Brauer, Acta Crystallogr. B, 30(8), 2004-2006 (1973). 74Eis: B. Eisenmann and H. Schafer, Z. Naturforsch. B, 29(1-2), 13-15 (1974) in German. 76Del: K. Deller and B. Eisenmann, Z. Naturforsch. B, 31(1), 29-34 (1976) in German. 1