Evolution of Shock Waves in Hot-Pressed Ceramics of Boron Carbide and Silicon Carbide


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Abstract

In this paper we studied the evolution of shock compression waves in hot-pressed ceramics based on boron carbide and silicon carbide at a maximum compressive stress of 32 and 34 GPa, respectively, to determine the possible contribution of relaxation processes to the resistance to high-rate deformation. At a change in sample thickness from 0.5 to 8 mm, an appreciable decay of the elastic precursor was observed in boron carbide while an insignificant anomalous growth of the elastic precursor with a sample thickness was observed in the experiments with silicon carbide samples of various thickness. The measured value of the Hugoniot elastic limit of samples with a thickness of 8 mm was σHEL = 17.2 ± 1.3 GPa for boron carbide and σHEL = 15 ± 0.1 GPa for silicon carbide.

About the authors

A. S. Savinykh

Institute of Problems of Chemical Physics, Russian Academy of Sciences; Tomsk State University

Author for correspondence.
Email: savas@ficp.ac.ru
Russian Federation, Chernogolovka, 142432; Tomsk, 634050

I. A. Cherepanov

Moscow State University

Email: savas@ficp.ac.ru
Russian Federation, Moscow, 119991

S. V. Razorenov

Institute of Problems of Chemical Physics, Russian Academy of Sciences; Tomsk State University

Email: savas@ficp.ac.ru
Russian Federation, Chernogolovka, 142432; Tomsk, 634050

A. I. Ovsienko

OOO VIRIAL

Email: savas@ficp.ac.ru
Russian Federation, St. Petersburg, 194156

V. I. Rumyantsev

OOO VIRIAL

Email: savas@ficp.ac.ru
Russian Federation, St. Petersburg, 194156

S. S. Ordan’yan

St. Petersburg State Institute of Technology (Technical University)

Email: savas@ficp.ac.ru
Russian Federation, St. Petersburg, 190013

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