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Study of sintering processes in copper and nickel by positron annihilation

✍ Scribed by Dr. R. Krause; Prof. Dr.-Ing. Habil. W. Schatt; B. Vetter; A. Polity

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 366 KB
Volume: 25
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.2170250715

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In the advanced stage of non‐isothermal sintering, vacancy clusters are present as prevailing type of defects. Their concentration considerably decreases at further temperature increase, and it can be concluded that thermally activated conversion of multiple vacancies into climbable dislocations takes place. Hence, in conformity with recent experiments, coincidence of intensive material transport (\documentclass{article}\pagestyle{empty}\begin{document}$ \dot \varepsilon $\end{document} e‐maximum) and decrease of defect concentration (recovery) can be understood.

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