Strain-induced collapse of the vacancy field and threshold voids formation in solids

Vladimir I. Emel'yanov

doi:10.1117/12.58626

1 April 1992 Strain-induced collapse of the vacancy field and threshold voids formation in solids

Vladimir I. Emel'yanov

Proceedings Volume 1723, LAMILADIS '91 Intl Workshop: Laser Microtechnology and Laser Diagnostics of Surfaces; (1992) https://doi.org/10.1117/12.58626
Event: LAMILADIS '91: International Workshop: Laser Microtechnology and Laser Diagnostics of Surfaces, 1991, Chernivsti, Ukraine

Abstract

It is well known that under the action of external energy fluxes a large number of voids are being formed in solids. Thus, intense voids generation takes place after the ion implantation, high energy particle irradiation and laser irradiation. A common feature of all these cases is the generation of a large number of nonequilibrium vacancies. The cause of the void formation is condensation of these defects into the clusters which are the embryonic voids. The classical theory of void generation has very limited validity in the above mentioned cases due to the very high vacancy concentrations and nonequilibrium conditions of their generation. Besides, a sharp threshold character of the void formation phenomenon, that is observed in experiments cannot be explained from the classical (thermodynamic) theory point of view. In this report a novel vacancy-strain (VS) mechanism of the nonequilibrium threshold formation of voids in solids is proposed.

Citation Download Citation

Vladimir I. Emel'yanov "Strain-induced collapse of the vacancy field and threshold voids formation in solids", Proc. SPIE 1723, LAMILADIS '91 Intl Workshop: Laser Microtechnology and Laser Diagnostics of Surfaces, (1 April 1992); https://doi.org/10.1117/12.58626

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