Heat Transfer Processes at Early Stages of Crystal Nucleation in Glass-Forming Materials and Polymers

IF 0.6 4区 物理与天体物理 Q4 MECHANICS
A. A. Minakov
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引用次数: 0

Abstract

Local thermal perturbations in supercooled glass-forming liquids during the nucleation and decay of nuclei of the crystalline phase are analyzed. The nonequilibrium thermal response of glass-forming materials to fast local thermal perturbations is described using an integral equation with dynamic heat capacity. It is shown that local thermal perturbations associated with the formation of nuclei of the crystalline phase significantly affect the nucleation rate in supercooled glass-forming liquids. The obtained fundamental knowledge can be useful for the technology of new nanostructured materials, polymers and nanocomposites.

Abstract Image

玻璃成形材料和聚合物晶体成核初期的传热过程
分析了过冷玻璃形成液在晶态核成核和衰变过程中的局部热扰动。用动态热容积分方程描述了玻璃成形材料对快速局部热扰动的非平衡热响应。结果表明,与晶核形成有关的局部热扰动显著影响过冷玻璃形成液的成核速率。所获得的基础知识可用于新型纳米结构材料,聚合物和纳米复合材料的技术。
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来源期刊
Doklady Physics
Doklady Physics 物理-力学
CiteScore
1.40
自引率
12.50%
发文量
12
审稿时长
4-8 weeks
期刊介绍: Doklady Physics is a journal that publishes new research in physics of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia in the form of short articles. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.
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