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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Thermochemistry of some binary alloys of noble metals (Cu, Ag, Au) and transition metals by high temperature direct synthesis calorimetry
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Thermochemistry of some binary alloys of noble metals (Cu, Ag, Au) and transition metals by high temperature direct synthesis calorimetry

机译：高温直接合成量热法测定某些贵金属（铜，银，金）和过渡金属的二元合金的热化学

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摘要

The standard enthalpies of formation of some noble metal-transition metal compounds have been measured by high temperature direct synthesis calorimetry at 1372 K. The following results (in 4/mol of atoms) are reported; Cu_(51)Zr_(14), -24.3+-2.2; Cu_3Pd, -7.6+-1.2; Cu_(51)Hf_(14), -22.9+-23; Cu_3Pt, -10.8+-1.1; AgTi, -1.6+-2.4; AgTi_2, -2.3+-1.1; Ag_2Y, -26.6+1.2; Au_2Sc, -83.4+-1.8; Au_4Sc, -57.3+-1.5; AuMn, -25.3+-1.7; Au_2Y, -84.6+-1.8; Au_3Y, -69.1+-1.9; Au_3Pd, -7.9+-1.9. The results are compared with some earlier experimental values obtained by EMF, by vapor pressure and by calorimetry. They are also compared with the predicted values of Miedema and coworkers. We will present a systematic picture of how the enthalpies of formation may be related to the atomic number of the transition metal.
机译：已通过高温直接合成量热法在1372 K下测量了一些贵金属-过渡金属化合物形成的标准焓。报告了以下结果（以4 / mol原子计）; Cu_（51）Zr_（14），-24.3 + -2.2; Cu_3Pd，-7.6 + -1.2; Cu_（51）Hf_（14），-22.9 + -23; Cu_3Pt，-10.8 + -1.1; AgTi，-1.6 + -2.4; AgTi_2，-2.3 + -1.1; Ag_2Y，-26.6 + 1.2; Au_2Sc，-83.4 + -1.8; Au_4Sc，-57.3 + -1.5; AuMn，-25.3 + -1.7; Au_2Y，-84.6 + -1.8; Au_3Y，-69.1 + -1.9; Au_3Pd，-7.9 + -1.9。将结果与通过EMF，蒸汽压和量热法获得的一些早期实验值进行比较。还将它们与Miedema及其同事的预测值进行比较。我们将系统地介绍形成焓如何与过渡金属的原子序数相关。

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