A. V. Kuznetcov, V. A. Morozov, G. G. Savenkov, V. V. Stolyarov, “The role of graphene admixtures in the stability of aluminum oxide to brittle fracture under pulsed electrophysical actions”, Zhurnal Tekhnicheskoi Fiziki, 2021, Volume 91, Issue 3,Pages <nobr>484

Physical science of materials

The role of graphene admixtures in the stability of aluminum oxide to brittle fracture under pulsed electrophysical actions

A. V. Kuznetcov^a, V. A. Morozov^b, G. G. Savenkov^acd, V. V. Stolyarov^e

^a Armalit Machine Building Plant, St. Petersburg
^b Saint Petersburg State University
^c State Technological Institute of St. Petersburg (Technical University)
^d Ioffe Institute, St. Petersburg
^e A. A. Blagonravov Mechanical Engineering Institute RAS, Moscow

Abstract: We report the results of testing the dynamic strength of Al$_2$O$_3$ nanoceramics with different concentrations of five-layer graphene under the action of a high-current nanosecond electron beam and a high-voltage electric discharge of the same nanosecond duration. It is found that, under pulsed loading, an increase in the graphene content in the composite increases the brittleness of the nanocomposite.

Keywords: metal ceramic composite, graphene, high-current electron beam, high-voltage discharge.

Received: 15.07.2020
Revised: 05.10.2020
Accepted: 07.10.2020

DOI: 10.21883/JTF.2021.03.50527.247-20