Фазовая диаграмма системы Cu-Te

К оглавлению: Другие диаграммы (Others phase diargams)


Cu-Te (Copper-Tellurium) Editor The Cu-Te phase diagram is based primarily on the DTA, DSC, and X-ray investigations of [83Bla]; the miscibility gap in the liquid phase in the Cu- rich region is taken from [74Bur]. The diagram shows some differences from the one proposed by [Hansen], with revisions in the region between 33 and 45 at.% Te. Furthermore, the monotectic temperature in the Cu-rich region is shifted upward by ~40 C. The region between 33 and 45 at.% Te is marked by two phase fields, labeled Cu2-xTe and Cu3-xTe2. In the homogeneity range of Cu2-xTe (~33. 5 to 36.2 at.% Te), several structures or superstructures have been reported. The phase fields of these superstructures are tentatively derived from [83Bla]. The phase relations in the region corresponding to Cu3-xTe2 have not been conclusively identified, and the diagram proposed by [83Bla] is confusing. The phases Cu2-x, (Ch type), Cu3-xTe (C38 type), and CuTe occur in nature as the minerals weissite, rickardite, and vulcanite, respectively. -P.R.S. 53Sch: K. Schubert, K. Anderko, M. Kluge, H. Buskow, E. Dorne, and P. Essl, Naturwissenschaften, 40, 269 (1953). 54And: K. Anderko and K. Schubert, Z. Metallkd., 45, 371-378 (1954). 56Pat: I. Patzak, Z. Metallkd., 47, 418-420 (1956). 70Bar: R.V. Baranova and Z.G. Pinsker, Russ. J. Struct. Chem., 11, 637 (1970). 71Ste: A.L.N. Stevels and G.A. Wiegers, Rec. Trav. Chim. Pay.-Bas., 90 352 ( 1971). 74Bur: B.P. Buryglev, N.N. Fedorova, and L.S. Tsemekhman, Russ. J. Inorg. Chem. , 19, 1249 (1974). 83Bla: R. Blachnik, M. Lasocka, and U. Walbrecht, J. Solid State Chem., 48, 431-438 (1973). 1