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This article is cited in 6 scientific papers (total in 6 papers)
Strength of synthetic diamonds under tensile stresses produced by picosecond laser action
S. A. Abrosimova, A. P. Bazhulina, A. P. Bol'shakovab, V. I. Konovab, I. K. Krasyuka, P. P. Pashinina, V. G. Ral'chenkoab, A. Yu. Semenova, D. N. Sovykab, I. A. Stuchebryukhova, V. E. Fortovc, K. V. Khishchenkoc, A. A. Khomichab a Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia
b MEPhI National Nuclear Research University, Moscow, 115409, Russia
c Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412, Russia
Abstract:
Results of an experimental-theoretical study of spallation in synthetic diamonds are presented. In this study, data were first obtained on dynamic tensile strength of poly- and single-crystal diamond samples at mechanical loads of up to $0.34$ TPa and strain rates of $10$–$100$ $\mu$s$^{-1}$. Shock-wave loading was performed by $70$ ps laser pulses on a Kamerton-T facility using a Nd:glass laser (second harmonics $\lambda=527$ nm, pulse energy of up to $\approx3$ J) at intensities of $\approx8$ TW/cm$^2$. The obtained maximal value of the spall strength $\approx16.4$ GPa is $24\%$ of the theoretical ultimate strength of diamond. Raman scattering experiments showed that a small amount of diamond was graphitized in the spall area on the backside of the sample.
Keywords:
synthetic diamonds, laser pulse action, negative pressure, spall strength, phase transformations.
Received: 16.10.2014
Citation:
S. A. Abrosimov, A. P. Bazhulin, A. P. Bol'shakov, V. I. Konov, I. K. Krasyuk, P. P. Pashinin, V. G. Ral'chenko, A. Yu. Semenov, D. N. Sovyk, I. A. Stuchebryukhov, V. E. Fortov, K. V. Khishchenko, A. A. Khomich, “Strength of synthetic diamonds under tensile stresses produced by picosecond laser action”, Prikl. Mekh. Tekh. Fiz., 56:1 (2015), 171–179; J. Appl. Mech. Tech. Phys., 56:1 (2015), 143–149
Linking options:
https://www.mathnet.ru/eng/pmtf999 https://www.mathnet.ru/eng/pmtf/v56/i1/p171
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