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@ARTICLE{LakshmiNarsimhan:51985,
      author       = {Lakshmi-Narsimhan, T. S. and Kath, D. and Markus, T. and
                      Hilpert, K.},
      title        = {{A}ctivity {M}easurements on the {A}l-rich {R}egion of
                      {N}i-{A}l {S}ystem - {A} {H}igh {T}emperature {M}ass
                      {S}pectrometric {S}tudy : {D}edicated to {P}rof. {D}r.
                      {F}erdinand {S}ommer on the occasion of his 65th birthday},
      journal      = {International journal of materials research},
      volume       = {97},
      issn         = {1862-5282},
      address      = {München},
      publisher    = {Hanser},
      reportid     = {PreJuSER-51985},
      pages        = {461 - 470},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {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 $10\%.$},
      keywords     = {J (WoSType)},
      cin          = {IWV-2},
      ddc          = {670},
      cid          = {I:(DE-Juel1)VDB2},
      pnm          = {Rationelle Energieumwandlung},
      pid          = {G:(DE-Juel1)FUEK402},
      shelfmark    = {Metallurgy $\&$ Metallurgical Engineering},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000238595200018},
      url          = {https://juser.fz-juelich.de/record/51985},
}