Analysis of isochronal calorimetric measurements of point defect elimination in a quenched Co48Ga52 intermetallic compound
Identifieur interne : 001298 ( Main/Curation ); précédent : 001297; suivant : 001299Analysis of isochronal calorimetric measurements of point defect elimination in a quenched Co48Ga52 intermetallic compound
Auteurs : O. Sassi [Maroc] ; J. Aride [Maroc] ; A. Berrada ; G. Moya [France]Source :
- Philosophical magazine letters [ 0950-0839 ] ; 1993.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
In the intermetallic compound Co48Ga52, high vacancy supersaturations have been produced by quenching from 900oC. Differential scanning calorimetry performed on quenched samples has revealed one annealing stage at about 550oC. An accurate method for the determination of the activation energy from anisothermal calorimetric data is presented. The results are discussed and it is suggested that the stage observed is due to the annealing out of quenched-in monovacancies by the formation of clusters
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Pascal:93-0663203Le document en format XML
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Analysis of isochronal calorimetric measurements of point defect elimination in a quenched Co<sub>48</sub>
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<series><title level="j" type="main">Philosophical magazine letters</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activation energy</term>
<term>Binary alloy</term>
<term>Chemical diffusion</term>
<term>Differential scanning calorimetry</term>
<term>Experimental study</term>
<term>Gallium Cobalt Alloys</term>
<term>Intermetallic compound</term>
<term>Quenching</term>
<term>Thermal annealing</term>
<term>Vacancy cluster</term>
<term>Vacancy density</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term>
<term>Alliage binaire</term>
<term>Gallium Cobalt Alliage</term>
<term>Composé intermétallique</term>
<term>Trempe</term>
<term>Recuit thermique</term>
<term>Calorimétrie différentielle balayage</term>
<term>Densité lacune</term>
<term>Energie activation</term>
<term>Diffusion chimique</term>
<term>Amas lacune</term>
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<front><div type="abstract" xml:lang="en">In the intermetallic compound Co<sub>48</sub>
Ga<sub>52</sub>
, high vacancy supersaturations have been produced by quenching from 900<sup>o</sup>
C. Differential scanning calorimetry performed on quenched samples has revealed one annealing stage at about 550<sup>o</sup>
C. An accurate method for the determination of the activation energy from anisothermal calorimetric data is presented. The results are discussed and it is suggested that the stage observed is due to the annealing out of quenched-in monovacancies by the formation of clusters</div>
</front>
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