Energetic Compositions by Mechanochemical Treatment of Metal Powders: 3. Influence of Activated and Modified Aluminum Particles on Combustion of Thermite SiO₂–Al Mixtures

A. E. Bakkara^a^,^b^, *, B. S. Sadykov^a^,^b^, **, Z. L. Sultanova^a, A. S. Khairullina^a, N. N. Mofa^b^, ***, and Z. A. Mansurov^a^,^b

^aal-Faraby National University, Almaty, Kazakhstan

^bInstitute for Combustion Problems, Almaty, Kazakhstan

Correspondence to: *e-mail: bakkara_ayagoz@mail.ru
Correspondence to: **e-mail: sadykoff_baha@mail.ru
Correspondence to: ***nina.mofa@kaznu.kz

Received 22 March, 2021

Abstract—The influence of mechanochemical treatment (MCT) and modification of Al particles on the process of technological combustion in aluminothermic SiO₂–Al mixtures was studied by XRD, SEM/EDS, and pyrometrically. Graphite, polyvinyl alcohol, and stearic acid were used as modifiers. Combined use of modifiers and MCT was found to markedly increase combustion temperature and burning velocity of thermite SiO₂–Al compositions.

Keywords: SHS, aluminothermy, technological combustion, polyvinyl alcohol, stearic acid, mechanochemical treatment

DOI: 10.3103/S106138622103002X

Energetic Compositions by Mechanochemical Treatment of Metal Powders: 3. Influence of Activated and Modified Aluminum Particles on Combustion of Thermite SiO2–Al Mixtures

Energetic Compositions by Mechanochemical Treatment of Metal Powders: 3. Influence of Activated and Modified Aluminum Particles on Combustion of Thermite SiO₂–Al Mixtures