Temperature Dependence of Self-Diffusion Coefficient in Liquid Hg and Sn: a Modified Hard-Sphere Description

Isao Yokoyama; Yoshio Waseda

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Temperature Dependence of Self-Diffusion Coefficient in Liquid Hg and Sn: a Modified Hard-Sphere Description

机译：液态汞和锡中自扩散系数的温度依赖性：修正的硬球描述

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Analytical expressions based on a modified hard-sphere model are presented for atomic diffusion in condensed matter. The temperature dependence of a hard-sphere diameter is essential to explain the experimental diffusion coefficient in liquid Hg and Sn. The formula proposed by Protopapas et al. /10/ works well at low temperatures but fails to describe the temperature dependence of a hard-sphere diameter as the temperature is increased. A universal reduced form obtained by Itami and Sugimura is better than Protopapas et al.'s formula at high temperatures.

机译：提出了基于改进的硬球模型的解析表达式，用于凝聚态原子的扩散。硬球直径的温度依赖性对于解释液体Hg和Sn中的实验扩散系数至关重要。 Protopapas等人提出的公式。 / 10 /在低温下效果很好，但是无法描述随着温度升高硬球直径的温度依赖性。 Itami和Sugimura获得的通用还原形式在高温下比Protopapas等人的配方更好。

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来源
《High temperature materials and processes》 |2002年第4期|p.213-216|共4页
作者
Isao Yokoyama; Yoshio Waseda;
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作者单位

Mutsuura 3-27-14, Kanazawa-ku, Yokohama 236-0031, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类金属学与热处理;
关键词
dzugutov's scaling law; excess entropy; self-diffusion coefficient; hard-sphere model;

机译：dzugutov的缩放定律;过量熵自扩散系数硬球模型;

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1. Temperature dependence of sound velocity and self-diffusion coefficient in liquid alkali metals: a hard-sphere description [J] . Yokoyama I. Physica, B. Condensed Matter . 2001,第3a4期

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2. Self-diffusion coefficient and its relation to properties of liquid metals: a hard-sphere description [J] . Isao Yokoyama Physica, B. Condensed Matter . 1999,第1a4期

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Temperature Dependence of Self-Diffusion Coefficient in Liquid Hg and Sn: a Modified Hard-Sphere Description

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