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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Determination of thermal conductivity and interfacial energy of solid Zn solution in the Zn-Al-Bi eutectic system
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Determination of thermal conductivity and interfacial energy of solid Zn solution in the Zn-Al-Bi eutectic system

机译：Zn-Al-Bi共晶体系中固体Zn溶液的导热系数和界面能的测定

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摘要

The equilibrated grain boundary groove shapes for solid Zn solution (Zn-3.0 at.% Al-0.3 at.% Bi) in equilibrium with the Zn-Al-Bi eutectic liquid (Zn-12.7 at.% Al-1.6 at.% Bi) have been observed from quenched sample with a radial heat flow apparatus. Gibbs-Thomson coefficient, solid-liquid interfacial energy and grain boundary energy for solid Zn solution in equilibrium with Al-Bi-Zn eutectic liquid have been determined to be (5.1±0.4)×10~(-8)Km, (80.1±9.6)×10~(-3) and (158.6±20.6)×10~(-3)Jm~(-2) from the observed grain boundary groove shapes, respectively. The thermal conductivity variation with temperature for solid Zn solution has been measure with radial heat flow apparatus and the value of thermal conductivity for solid Zn solution has been determined to be 135.68W/km at the eutectic melting temperature. The thermal conductivity ratio of equilibrated eutectic liquid to solid Zn solution, R=K_(L(Zn))/K_(S(Zn)) has also been measured to be 0.85 with Bridgman type solidification apparatus.
机译：固态Zn溶液（Zn-3.0 at。％Al-0.3 at。Bi）的平衡晶界槽形状与Zn-Al-Bi共晶液体（Zn-12.7 at。％Al-1.6 at。Bi用径向热流仪从淬火样品中观察到了）。确定与Al-Bi-Zn共晶液平衡的固溶锌溶液的Gibbs-Thomson系数，固液界面能和晶界能为（5.1±0.4）×10〜（-8）Km，（80.1±从观察到的晶界槽形状分别为9.6）×10〜（-3）和（158.6±20.6）×10〜（-3）Jm〜（-2）。用径向热流仪测量了固态锌溶液的导热系数随温度的变化，在共熔温度下，固态锌溶液的导热系数确定为135.68W / km。平衡的共晶液体与固态Zn溶液的热导率比R = K_（L（Zn））/ K_（S（Zn））也用Bridgman型固化设备测得为0.85。

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