Фазовая диаграмма системы C-Pr

К оглавлению: Другие диаграммы (Others phase diargams)

C-Pr (Carbon-Praseodymium) Editor [88Ere] determined the Pr-C phase diagram by differential thermal, X-ray, and metallographic analyses. [58Spe] reported that three phases (hexagonal Pr, bcc Pr2C3, and tetragonal PrC2) exist from 0 to 57 at.% C. [71Kos] reported 1560 C as the melting temperature of Pr2C3, which is consistent with the other known peritectic temperatures of RE2C3 compounds. The room temperature form of PrC2 is tetragonal with the CaC2-type structure. bPrC2 has a cubic structure. A PrC6 compound was reported by [80Elm], but the structure was not determined.<311>H.O. 58Spe: F.H. Spedding, K.A. Gschneidner, Jr., and A.H. Daane, J. Am. Chem. Soc., 80, 4499 (1958). 71Kos: T.Ya. Kosolapova, G.N. Makarenko, and L.T. Domasevich, Zhur. Prik. Khim. , 44, 953 (1971); TR: Russ. J. Appl. Chem., 44, 965 (1971). 80Elm: M. El Makrini, D. Gu‚rard, P. LaGrange, and A. H‚rold, Physica, 99B, 481 (1980). 88Ere: V.N. Eremenko, T.Ya. Velikanova, and O.V. Gordiichuk, Porosh. Metall., ( 11), 51-57 (1988) in Russian; TR: Sov. Powder Metall., 27(11), 882-888 (1988). This supersedes the evaluation by K.A. Gschneidner, Jr. and F.W. Calderwood published in Bull. Alloy Phase Diagrams, 7(6), Dec 1986, which contains 1 table and 23 references. 1