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The solvus behavior of the tantalum-hydrogen (deuterium) system

✍ Scribed by T.B. Flanagan; T. Schober; H. Wenzl

Publisher
Elsevier Science
Year
1983
Weight
484 KB
Volume
31
Category
Article
ISSN
0001-6160

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✦ Synopsis

It is shown that the s&us data for the system Ta-H(D) from 192 to 283 K can be described by a simple model which allows for non-ideality in the dilute, interstitial solution which coexists with the hydride phase. The present data are shown to be compatible with earlier data if the effects of hysteresis and non-ideality are allowed for. Thus the solvus behavior of Ta-H(D) can now be regarded as well-established. R&sum-peut d&ire les domiees concernant la solvus du systime Ta-H(D) de 192 B 283 K B I'aide d'un mo&le simple tenant compte de la non-id&alit6 de la solution interstitielle dih& qui coexiste avec la phase hydrure. Nous montrons que nos risultats sont compatible avec des don&s ant&cures B condition de tenir compte des effets d'hyst&se et de non-idCaMe. On pebt done consid&er maintenant que le solvus du systkme Ta-H(D) est bien Ctabli. Zuaammeafassung-Die Solvusdaten des Systems Ta-H(D) & Temperaturen zwischen 192 und 283 K ki5nnen mit einem einfachen Model1 beschrieben werden. Dieses beriicksichtigt die Nichtidealitit det mit den Hydridphasen koexistierenden verdiinnten interstitiellen L&ung. Die vorgelegten Daten sind vertriiglich mit friiheren, wenn Hysterese-und Nichtidealitiitseffekte beriicksichtigt werden. Somit ist das Solvusverhalten von Ta-H(D) nun gut bekannt.

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## Abstract Gorsky‐effect measurements on vanadium‐, niobium‐, and tantalum‐samples loaded with different concentrations (0.2 to 4.3 at%) of hydrogen or deuterium are reported. From the relaxation strength the trace of the dipole‐moment tensor of hydrogen and deuterium was determined and found to b