Фазовая диаграмма системы Mg-Pr

К оглавлению: Другие диаграммы (Others phase diargams)


Mg-Pr (Magnesium-Praseodymium) A.A. Nayeb-Hashemi and J.B. Clark The assessed Mg-Pr phase diagram is based on a review of the experimental data [Hansen, 33Can, 57Par, 71Boc]. The (Mg) liquidus is taken from [71Boc], and the eutectic point is placed at 4.65 с 0.25 at.% Pr and 575 с 2 C. The compound involved in the Mg-rich eutectic is Mg12Pr. The maximum solid solubility of Pr in (Mg) is 0.09 at.% [57Par]. [65Jos] determined the solid solubility of Mg in (aPr) to be 9.2 at.% Mg (90.8 at.% Pr) at the eutectoid decomposition temperature of (bPr) (528 C). At 4.2 to 300 K with magnetic fields of up to 18 kOe, MgPr exhibited an antiferromagnetic behavior, with a N‚el temperature of 48 K and an asymptotic Curie temperature of -9 K [73Bus]. Mg2Pr showed Curie-Weiss behavior with a Curie temperature of 9.6 K [78Bus]. Mg3Pr showed no magnetic ordering and the asymptotic Curie temperature was found to be -42 K [76Bus]. 33Can: G. Canneri, Metall. Ital., 25, 250-252 (1933) in Italian. 57Par: J.J. Park and L.L. Wyman, WACD Tech. Rep. 57-504, 33 p (1957). 65Jos: R.R. Joseph and K.A. Gschneidner, Jr., Trans. Metall. Soc. AIME, 233, 2063-2069 (1965). 71Boc: N.R. Bochvar, Structure and Properties of Light Alloys, A.M. Korolkov, Ed., 21-23 (1971) in Russian; TR: UDC 669.018:546'46'646. 73Bus: K.H.J. Buschow, J. Less-Common Met., 33, 239-244 (1973). 76Bus: K.H.J. Buschow, J. Less-Common Met., 44, 301-306 (1976). 78Bus: K.H.J. Buschow, R.C. Sherwood, and F.S.L. Hsu, J. Appl. Phys., 49(3), 1510-1512 (1978). Published in Bull. Alloy Phase Diagrams, 10(1), Feb 1989, and Phase Diagrams of Binary Magnesium Alloys, 1988. Complete evaluation contains 1 figure, 4 tables, and 25 references. Special Points of the Mg-Pr System