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Combustion, Explosion and Shock Waves

2017 year, number 5

Combustion of a High-Calorific Thermite Mixture on the Surface of a Titanium Base

D. E. Andreev, D. M. Ikornikov, V. I. Yukhvid, V. N. Sanin
Institute of Structural Macrokinetics and Problems of Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Keywords: СВС-наплавка, металл-керамика, высококалорийная термитная смесь, градиентные материалы, гравитационная сепарация, SHS-surfacing, metal-ceramics, high-calorific thermite mixture, gradient materials, gravitational separation

Abstract

The combustion and chemical transformation of highly exothermic MoO3/NiO/Al/C and MoO3/NiO/Al/B mixtures on the surface of a titanium base under the effect of centrifugal acceleration are studied. It is shown that chemical reactions occur not only in the combustion wave, but also on the surface of the titanium base, between the combustion products and the base material (titanium). The dynamics and mechanism of formation of layered (gradient) titanium-ceramics materials (Mo-Ni-C-Ti or Mo-Ni-B-Ti) is investigated.