Standard gibbs energy of formation of Mg3La determined by solution calorimetry and heat capacity measurement from near absolute zero kelvin

DOI Web Site Web Site 被引用文献1件 参考文献36件
  • Yamamoto Hiroaki
    Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
  • Morishita Masao
    Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
  • Matsumoto Yasutomo
    Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo
  • Onoue Ai
    Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo

書誌事項

タイトル別名
  • Standard Gibbs Energy of Formation of Mg<SUB>3</SUB>La Determined by Solution Calorimetry and Heat Capacity Measurement from Near Absolute Zero Kelvin

この論文をさがす

抄録

The standard Gibbs energy of formation, ΔfGoT, of Mg3La in the temperature range from near absolute zero Kelvin to 525 K were determined by calorimetry. The heat capacities, Cp, from 2 K to 525 K were measured by the relaxation method and DSC. The ΔfGoT(Mg3La) values were determined by combining the Cp data with the standard enthalpy of formation at 298 K which was measured by the Calvet-type calorimeter using hydrochloric acid solution. From 2 to 350 K, the ΔfGoT increases gradually, and it can be evaluated as a linear function of temperature above 350 K as follows: <br> ΔfGoT(Mg3La)/kJ mol−1<BR>  =−76.204−2.5304×10−2 T+1.2160×10−2 T log T<BR>    +1.1814×10−5 T2−0.80332 T−1±17.0 (2–350 K)<BR> ΔfGoT(Mg3La)/kJ mol−1=−79.652+1.9567×10−2 T±17.0 (350–525 K). <br>This result is expected to be useful as basic thermodynamic data of Mg-based alloys.

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (36)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ