Interfacial energy of solid bismuth in equilibrium with Bi−In eutectic liquid at 109.5 °C equilibrating temperature
Interfacial energy of solid bismuth in equilibrium with Bi−In eutectic liquid at 109.5 °C equilibrating temperature
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109.5 °C 平衡温度下固体铋与 Bi−In 共晶液体平衡的界面能
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
E. Çadırlı
中科院分区：
文献类型：
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作者：
Y. Ocak;S. Akbulut;N. Maraşlı;K. Keşlioğlu;Gĝur Böyük;H. Kaya;E. Çadırlı
在109.5℃的平衡温度下，测定了固体铋(Bi)与铋−在共熔液中的平衡界面能。用一根电热丝从样品中心加热，然后用含有乙二醇水溶液的加热/制冷循环浴槽在−10℃下冷却样品，从而在样品上建立了径向温度梯度。研究了固态铋与共晶液(Bi47.3at.从观察到的晶界沟槽形状可知，在109.5°C淬火的样品中观察到了%In)。从观察到的晶界沟槽形状，测得固-液平衡时的Gibbs-Thomson系数和固-液界面能分别为(8.4±0.4)×10−8Km和(54.0±5.4)×10−3Jm−2。考虑晶界沟槽的力平衡，计算出固相铋相的晶界能为(105.5±11.6)×10−3J m−2。测量了Bi47.3At的热导率。%的共晶液相和固相Bi47.3At。用径向热流仪和Bridgman型生长装置测量了109.5℃时的晶相百分含量及其比值。
The interfacial energy of solid bismuth (Bi) in equilibrium with Bi−In eutectic liquid was determined for the equilibrating temperature of 109.5 °C. A radial temperature gradient on the sample was established by heating it from the center with a single heating wire and cooling the outside of the sample at −10 °C with a heating/refrigerating circulating bath containing an aqueous ethylene glycol solution. The equilibrated grain boundary groove shapes of solid Bi in equilibrium with Bi In eutectic liquid (Bi- 47.3 at. %In) were observed from a sample quenched at 109.5 °C. The Gibbs-Thomson coefficient and the solid-liquid interfacial energy of the solid Bi in equilibrium with Bi In eutectic liquid were determined to be (8.4±0.4) × 10−8 K m and (54.0±5.4)×10−3 J m−2 from the observed grain boundary groove shapes. The grain boundary energy of the solid Bi phase was calculated to be (105.5±11.6)×10−3 J m−2 by considering a force balance at the grain boundary grooves. The thermal conductivities of Bi-47.3 at. %In eutectic liquid phase and the solid Bi-47.3 at. %In phase and their ratio at 109.5 °C were measured with a radial heat flow apparatus and a Bridgman type growth apparatus.