Фазовая диаграмма системы Sm-W

К оглавлению: Другие диаграммы (Others phase diargams)


Sm-W (Samarium-Tungsten) S. Pandian, S.V. Nagender Naidu, and P. Rama Rao Little information is available on the RE-W binary systems. The data of [66Den] were used to construct a partial assessed phase diagram for the Sm-W system. Substantial information is not available on the type of reaction RE elements have with W. In general, RE elements behave similarly. Reports are available for the Sc-W, Y-W, and Ce-W systems indicating a eutectic reaction in each; the other RE-W systems may also be expected to have a eutectic, probably of the type L = (RE) + (W). The solubility data of W in liquid Sm reported by [66Den] are 0.0018 at.% W at 1073 C, 0.0067 at.% W at 1418 C, 0.0116 at.% W at 1590 C, 0.0139 at.% W at 1603 C, 0.0182 at.% W at 1718 C, and 0.0149 at.% W at 1765 C. The eutectic temperature and composition are respectively shown as ~1074 C and 0.0018 at.% W in the assessed diagram. 66Den: D.H. Dennison, M.J. Tschetter, and K.A. Gschneidner, Jr., J. Less- Common Met., 11, 423-435 (1966). Published in J. Alloy Phase Diagrams, 4(2), May 1988. Complete evaluation contains 1 figure, 3 tables, and 21 references. 1