日本金属学会誌

J. Japan Inst. Metals, Vol. 13, No. 4 (1949),
pp. 27-31

Research on Selenium and its Alloys. (III)
Vapour pressure of Selenium Alloys

Tomo-o Sato1, Hideo Kaneko1

1東北大學金屬工學科

Abstract:

For a fundamental datum for refining crude Se by distillation, the vapour pressure of Se alloys containing another element was determined with the following results:
(a) The vapour pressure of Se-Sn and Se-Bi alloys decreases with the increase of Sn or Bi content, but each system has a monovariant range in its isobaric and isothermal diagram.
(b) The isobar and isotherm of Se-Te alloy show the minimum and maximum respectively, therefore separation of Te by distillation is difficult. (c) Se-Hg alloy is difficult to be separated due to high vapour pressure of the intermetallic compound (Hg. Se) which exists in this system. (d) The vapour pressure of Se-S alloy increases monotonously with increasing of S content. (e) Se-Cd alloy contains the intermetallic compound (Se•Cd) having low vapour pressure, so that it is possible to remove Cd from Se by distillation. Se-Zn alloy is similar to Se-Cd alloy. (f) Spectrographic examination of distillated Se was also carried out.


(Received 1948/09/10 Published 1949/04/20)

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