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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Print: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2018026000
pages 345-352

FILM–SUBSTRATE SURFACE ALLOY FORMED BY AN INTENSE PULSED ELECTRON BEAM

Yurii F. Ivanov
National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia; Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia
Nikolay N. Koval
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia; National Research Tomsk State University, 36 Lenin Ave., Tomsk, 634050, Russia
Olga V. Krysina
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia; Tomsk State University, Tomsk, Russia
P. V. Moskvin
Institute of High Current Electronics, SB RAS, 2/3 Akademichesky Ave., Tomsk, 634055, Russia
E. A. Petrikova
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia
O. S. Tolkachev
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia

ABSTRACT

Commercially pure A7 aluminum was surface alloyed with commercially pure VT1-0 titanium on COMPLEX equipment under unified vacuum conditions through vacuum arc evaporation and deposition of a thin Ti film and irradiation of the film–substrate system with a submillisecond intense pulsed electron beam. The number of deposition–irradiation cycles was varied from 1 to 20. The film thickness in each cycle was 0.5 μm. After multicycle surface alloying, a multiphase surface layer was formed containing AlTi, Al2Ti, Al3Ti, TiAl3, and Al5Ti2 in addition to solid solutions based on Al and α-Ti. Increasing the number of deposition–irradiation cycles from 1 to 20 increased the relative content of intermetallic compounds in the surface layer. After 20 cycles, the modified material revealed an intermetallic surface layer consisting of a mixture of AlTi (53.3 wt.%), Al3Ti (36.6 wt.%), and Al5Ti2 (9.4 wt.%) with a submicro- and nanosized multilayer structure in the material bulk. The microhardness and the wear resistance of the modified material increased with the increasing number of cycles, and after 20 cycles, their values were respectively ≈ 8.5 and ≈ 45 times higher than those in A7 aluminum.


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