The terbium-antimony alloy system

A phase diagram is proposed for the Tb-Sb system on the basis of differential thermal, X-ray, chemical and microscopy analyses. A peritectic reaction develops as a result of antimony additions and the transformation temperature of terbium is lowered by 25 °C. Eutectic reactions occur at 14 at.% Sb a...

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Bibliographic Details
Published in:Journal of the less-common metals 1981, Vol.77 (1), p.81-88
Main Authors: Abdusalyamova, M.N., Burnashev, O.R., Mironov, K.E.
Format: Article
Language:English
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Summary:A phase diagram is proposed for the Tb-Sb system on the basis of differential thermal, X-ray, chemical and microscopy analyses. A peritectic reaction develops as a result of antimony additions and the transformation temperature of terbium is lowered by 25 °C. Eutectic reactions occur at 14 at.% Sb and 1130 °C and at greater than 99.0 at.% Sb and 623 °C. There are four compounds in the system: Tb 5Sb 3 and Tb 4Sb 3 result from peritectic reactions at 1650 and 1770 °C while TbSb melts congruently at 2160 °C. The overall phase homogeneity range is no more than 1 at.%. Results for the formation of TbSb 2 at normal pressures are reported. Tb 4Sb 3 and TbSb were observed to exhibit polymorphic transformations.
ISSN:0022-5088
DOI:10.1016/0022-5088(81)90010-2