金属玻璃的超熵及其与母熔体玻璃形成能力的关系

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2025-01-10 DOI:10.1134/S0021364024602975

A. S. Makarov, R. A. Konchakov, G. V. Afonin, J. C. Qiao, N. P. Kobelev, V. A. Khonik

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引用次数: 0

摘要

根据30种金属玻璃的量热数据，测定了母体晶体态的多余熵ΔS。研究表明，过冷液体状态下的过剩熵ΔSsql是玻璃的普遍特征，与热处理无关。本文对同一种金属玻璃的过冷熔体的玻璃成形能力进行了六个参数的计算。结果表明，6个参数均随ΔSsql的增大而增大，过冷熔体的非晶化能力随其结构无序度的增大而增大。讨论了实现这种关系的可能机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Excess Entropy of Metallic Glasses and Its Relation to the Glass-Forming Ability of Maternal Melts

The excess entropy ΔS with respect to the maternal crystal state has been determined from calorimetric data for 30 metallic glasses. It has been shown that the excess entropy in the supercooled liquid state ΔS_sql is a universal characteristic of a glass independent of its thermal treatment. Six parameters often used to estimate the glass-forming ability of supercooled melts have been calculated for the same metallic glasses. It has been shown that all six parameters increase with ΔS_sql and the glass-forming ability of supercooled melts increases with their structural disorder. A possible mechanism to implement this relation has been discussed.

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.