Effects of g-jitters on solid-liquid interfacial free energy at low gravity

被引：0

作者：

Patuelli, C ^{[1
]}

Tognato, R ^{[1
]}

机构：

[1] Ist Nazl Fis Mat, Dipartimento Fis, I-40127 Bologna, Italy

来源：

FIRST INTERNATIONAL SYMPOSIUM ON MICROGRAVITY RESEARCH & APPLICATIONS IN PHYSICAL SCIENCES AND BIOTECHNOLOGY, VOLS I AND II, PROCEEDINGS | 2001年 / 454卷

关键词：

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

A domain model on gravity dependence of solid-liquid interfacial free energy, sigma (SL), in face centered cubic metals is presented. Low sigma (SL) values of the order 1 x 10(-7) J/m(2) in an orbiting space vehicle with gravity 9.8x10(-6)m(2)/sec are obtained; in presence of gravitational accelerations (g-jitters) with magnitudes between 10(-4) and 10(-2) m/sec(2) sigma (SL) values, instead, increase of two orders of magnitude. The results are discussed taking into account the generation of elastic waves by g-jitters which exert forces on the interfacial domains increasing the pressure at the solid-liquid interface.

引用

页码：897 / 903

页数：7

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