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Combustion of Large Monolithic Titanium Particles in Air. II. Characteristics of Condensed Combustion Products

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Combustion, Explosion, and Shock Waves Aims and scope

Abstract

Methods for the collection and analysis of condensed combustion products (CCPs) of large monolithic titanium particles with a diameter of 350–460 \(\mu\)m in air at atmospheric pressure are described. Detailed data on the granulometric, morphological, and phase compositions of CCPs and the number of particles produced by a single burning mother particle are presented. The following morphological types of CCP particles were identified: compact spheres (combustion residues of mother particles and their fragments) and aerogel round and elongated comet-shaped objects (rarefied openwork particles consisting of chains of nanosized spherules). According to the O/Ti atom ratio, all types of CCP particles are oxide. The mass fraction of aerogel objects in CCPs is 0.52–0.98, and their physical density is about 0.8 g/cm3. The characteristic sizes of compact spheres are 2–410 \(\mu\)m, those of aerogel round objects are 11–470 \(\mu\)m, and the length of aerogel comet-shaped objects can reach 13 mm. The typical sizes of spherules are 25–100 nm. Large compact spheres 200–400 \(\mu\)m in size typically contain a gaseous bubble and have a density of about 0.9 g/cm3.

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Authors and Affiliations

  1. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    O. G. Glotov, N. S. Belousova & G. S. Surodin

  2. Novosibirsk State Technical University, 630073, Novosibirsk, Russia

    O. G. Glotov & N. S. Belousova

Authors
  1. O. G. Glotov
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  2. N. S. Belousova
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  3. G. S. Surodin
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Correspondence to O. G. Glotov.

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Translated from Fizika Goreniya i Vzryva, 2022, Vol. 58, No. 6, pp. 51-65. https://doi.org/10.15372/FGV20220605.

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Glotov, O.G., Belousova, N.S. & Surodin, G.S. Combustion of Large Monolithic Titanium Particles in Air. II. Characteristics of Condensed Combustion Products. Combust Explos Shock Waves 58, 674–687 (2022). https://doi.org/10.1134/S0010508222060053

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