以CBr4-C2Cl6透明共晶合金为研究对象，以实时观察的方式研究试样厚度对于定向凝固共晶晶体取向及层片间距调整机制的影响。结果表明，试样厚度大于48μm时，厚度尺寸对于共晶晶体取向的影响可以忽略。当试样厚度为48μm时，对于不同取向晶粒的影响不同，界面能各向异性的效应开始表现出来。当试样厚度达到16μm时，层片间距的调整机制由多层调节转变为准二维调节机制。
Directional solidification studies have been carried out in transparent organic alloy CBr4-C2Cl6 system in order to obtain information related to influence of the sample thickness on the eutectic pattern formation and lamellar spacings adjustment mechanism in initial transient growth stage in eutectic systems. Thickness of the samples is within 16~100μm. Results showed that the capillary anisotropy affects considerably the eutectic grain formation when thickness equal to or less than 48μm due to eutectic grain consisting of titled lamellae will be form under such conditions. At the same time, in transient region the lamellar adjustment mechanism is sample thickness dependent remarkably, and which behaviors with bi-dimensional characteristics will be to occur only when sample thickness is 16μm or less.
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