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Study on the interaction between a dislocation and impurities Part XIII : Groping for a suitable force-distance relation between a dislocation and the impurity in KCl single crystals doped with monovalent impurities by activation energy -temperature relation

大島商船高等専門学校紀要 Volume 43 Page 71-74
published_at 2010-12
OS10043000012.pdf
[fulltext] 1.02 MB
Title
転位と不純物との相互作用に関する研究 (13) : 1 価不純物を含んだKCl 単結晶中の転位とその不純物との力対距離関係モデルについて、活性化エネルギーと温度との関係からの模索
Study on the interaction between a dislocation and impurities Part XIII : Groping for a suitable force-distance relation between a dislocation and the impurity in KCl single crystals doped with monovalent impurities by activation energy -temperature relation
Creators Kohzuki Yohichi
Source Identifiers
Creator Keywords
dislocation force-distance relation activation enthalpy plastic deformation
An attempt to select the most suitable force-distance relation between a dislocation and the monovalent cation impurity in KCl:Li+ (LiCl 0.5 mol% in the melt) and KCl:Na+ (NaCl 0.5 mol% in the melt) was conducted among the three models: a square, a parabolic, and a triangular force-distance relations. These models are taken into account the Friedel relation. The grope for the most suitable model was carried out at 80-300 K by roportionality of ∆H(T) . The ∆H(T) is the activation enthalpy for the interaction between a dislocation and an impurity as a function of temperature. As a result, the square force-distance relation seemed to be the most suitable of the three for KCl:Na+. However, it was difficult to select that for KCl:Li+. ∆H (Tc) was further obtained on the three force-distance relations for both the  pecimens. ∆H (Tc) corresponds to the activation enthalpy for overcoming the strain field with cubic distortion around the substitutional impurity by a dislocation without an applied stress.
Languages jpn
Resource Type departmental bulletin paper
Publishers 大島商船高等専門学校
Date Issued 2010-12
File Version Version of Record
Access Rights open access
Relations
[ISSN]0387-9232
[NCID]AN00031668