001     51985
005     20240709094343.0
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041 _ _ |a eng
082 _ _ |a 670
084 _ _ |2 WoS
|a Metallurgy & Metallurgical Engineering
100 1 _ |0 P:(DE-Juel1)VDB62057
|a Lakshmi-Narsimhan, T. S.
|b 0
|u FZJ
245 _ _ |a Activity Measurements on the Al-rich Region of Ni-Al System - A High Temperature Mass Spectrometric Study : Dedicated to Prof. Dr. Ferdinand Sommer on the occasion of his 65th birthday
260 _ _ |a München
|b Hanser
|c 2006
300 _ _ |a 461 - 470
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|a International Journal of Materials Research = Zeitschrift für Metallkunde
|v 97
|x 1862-5282
|y 4
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a Systematic vaporisation studies on the Ni-Al system with 0.32 <= x(Ni) <= 0.50 were carried out in the temperature range 1077-1592 K by Knudsen effusion mass spectrometry. While Al(g) was the vapour species observed over all the samples, Ni(g) was also detected over samples with the compositions x(Ni) = 0.50 and 0.49. From the p(Al)-T relations, activities of Al, and subsequently activities of Ni (by Gibbs-Duhem integration) were obtained. Moreover, partial and integral molar enthalpies and Gibbs energies of formation were evaluated. The variation of activities and other thermodynamic properties with composition are discussed. The enthalpy and Gibbs energy of formation of Ni0.5Al0.5(s) at 298.15 K were obtained as Delta H-f(m)o = -62.1 +/- 4.2 U mol and A(f)G(m)(o) = -57.7 +/- 1.2 U mol respectively. This is the first time that a systematic mass spectrometric investigation has been carried out on the aluminium rich region of Ni-Al system where the vacancy concentration in the NiAl phase can be as high as 10%.
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653 2 0 |2 Author
|a nickel aluminides
653 2 0 |2 Author
|a Knudsen effusion mass spectrometry
653 2 0 |2 Author
|a activities
653 2 0 |2 Author
|a partial and integral molar properties
700 1 _ |0 P:(DE-Juel1)VDB28018
|a Kath, D.
|b 1
|u FZJ
700 1 _ |0 P:(DE-Juel1)VDB2898
|a Markus, T.
|b 2
|u FZJ
700 1 _ |0 P:(DE-Juel1)VDB2710
|a Hilpert, K.
|b 3
|u FZJ
773 _ _ |0 PERI:(DE-600)2128058-7
|g Vol. 97, p. 461 - 470
|p 461 - 470
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|t International journal of materials research
|v 97
|x 1862-5282
|y 2006
909 C O |o oai:juser.fz-juelich.de:51985
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