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高温材料处理:国际期刊
SJR: 0.19 SNIP: 0.341 CiteScore™: 0.43

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.2016017333
pages 59-83

MATHEMATICAL MODELING OF SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS IN FORMATION OF A WEAR-RESISTANT COATING BY PULSE PLASMA PROCESSING OF A COMPOSITE PLASTER INVOLVING SHS REAGENTS

G. F. Gromyko
Institute of Mathematics, National Academy of Sciences of Belarus, 11 Surganov Str., Minsk, 220072, Belarus
N. P. Matsuka
Institute of Mathematics, National Academy of Sciences of Belarus, Minsk, Belarus
A. Ph. Ilyuschenko
Powder Metallurgy Institute, National Academy of Sciences of Belarus, 41 Platonov Str., Minsk, 220005, Belarus
A. I. Shevtsov
Powder Metallurgy Institute, National Academy of Sciences of Belarus, 41 Platonov Str., Minsk, 220005, Belarus
Valiantsin M. Astashynski
A.V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Belarus; National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute), 31 Kashirskoe Highway, Moscow, 115409, Russia
Kiastas V. Buikus
Belarusian National Technical University, 65 Nezavisimost Ave., Minsk, 220013, Belarus

ABSTRACT

A mathematical model of the thermal processes of self-propagating high-temperature synthesis in the formation of wear-resistant coatings by pulse plasma processing of a composite plaster of a charge containing SHS reagents has been developed. The boundary-value problem is solved by a finite volume method in a two-dimensional formulation using iterative processes. It is shown that the character of SHS depends substantially on the plasma jet power, processing distance, warming of the substrate, and on the internal energy of agglomerates (microcomposites) after mechanical activation of the initial charge. Optimal modes of forming Ni/NiCr + TiC composite coatings have been determined with the aid of computational experiments.


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