Mechanical properties, strength physics and plasticity

Formation of “primary” cracks upon fracture of quartz

V. I. Vettegren^ab, A. G. Kadomtsev^a, A. V. Ponomarev^b, R. I. Mamalimov^ab, I. P. Shcherbakov<sup>a

a</sup> Ioffe Institute, St. Petersburg
^b Institute of Physics of the Earth, Russian Academy of Scienses, Moscow, Russia

Abstract: The spectrum was obtained and the time dependences of the fractoluminescence signals were studied during the destruction of the quartz surface by “microcutting” perpendicular to the (0001) axis. An analysis of the obtained data showed that clusters of the 4 smallest “primary” cracks appear during fracture. The formation of cracks is associated with the destruction of barriers that prevent the movement of dislocations along slip planes. The crack sizes are several nm, and the growth rate is several m/s. The size distribution of cracks has a power law form.

Keywords: “primary” nanocracks, fractoluminescence, quartz.

Received: 27.04.2022
Revised: 27.04.2022
Accepted: 02.05.2022

DOI: 10.21883/FTT.2022.08.52701.368

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