To obtain Al–Al2O3 cermet with a heterogeneous granular-layered structure, aluminum powder of the industrial grade PAP-2 with a flaky particle shape and plasma-chemical alumina powder (PCAP), consisting of lamellar agglomerates (LLC “Kit-Stroy SPb”), were used. The PAP-2 and PCAP powders were mixed, the resulting mixture was briquetted, the briquette was mechanically ground, billets from the resulting dispersed product were pressed, after that billets were heat treated in a vacuum (630 °C, 1 h), calibrated and sintered in a vacuum (650 °C, 1 h). With PCAP content in the cermet composition from 3 to 15 % by weight, a material with a density of 2.58…2.67 g/cm3 and a bending strength of 380…450 MPa was obtained. Cermet has anisotropy of hardness values. The maximum values of hardness HV and HRB were achieved with a PCAP content of 9 % by weight (HVmax – 1970 and 1460 MPa at an indenter load of 0.25 and 1.00 N respectively; HRBmax – 44). The material can be used as lightweight armor protection elements, wear-resistant elements and special abrasive tools.
Dmitry A. Ivanov – Doctor of Technical Sciences, Professor of the Educational Center “New Materials and Production Technologies”, Moscow Aviation Institute (National Research University), Moscow, Russia
Georgy E. Valyano – senior researcher at the Laboratory of “Shock-Wave Effects”, Joint Institute for High Temperatures of the Russian Academy of Sciences (JIHT RAS), Moscow, Russia
Maria B. Afonina – Candidate of Technical Sciences, Associate Professor of the Educational Center “New Materials and Production Technologies”, Moscow Aviation Institute (National Research University), Moscow, Russia
Maria D. Tevs – engineer at the Laboratory of “Materials Science” of Institute № 11 “New Materials and Production Technologies”, Moscow Aviation Institute (National Research University), Moscow, Russia
Aleksey V. Shalin – Candidate of Technical Sciences, Associate Professor of the Educational Center “New Materials and Production Technologies”, Moscow Aviation Institute (National Research University), Moscow, Russia
Sergey M. Sarychev – Candidate of Technical Sciences, Associate Professor of the Educational Center “New Materials and Production Technologies”, Moscow Aviation Institute (National Research University), Moscow, Russia
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