Abstract
This paper touches upon the effect of a polyvinyl butyral content (0–2.3%) on the combustion of a Ti + C granular mixture with different types of titanium. Experiments are carried out with no external gas flow, so conductive combustion is expected to be observed due to a low decomposition temperature and a small amount of polyvinyl butyral. However, convective combustion is manifested in rapidly burning mixtures because the granule surface is ignited with hot gaseous decomposition products of polyvinyl butyral. It is explained how undecomposed polyvinyl butyral falls behind the ignition front, and it is revealed that the type of combustion of the Ti + C granular mixture depends on its burning rate in the case where no gas flows through the sample. Based on the experimental and theoretical analysis of the combustion process, it is established that granules are ignited during convective combustion at a temperature of the \(\alpha \to \beta\) transition in titanium. The different effect of a polyvinyl butyral content on slowly and rapidly burning Ti + C mixtures is qualitatively explained.
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Translated from Fizika Goreniya i Vzryva, 2021, Vol. 57, No. 3, pp. 88–96.https://doi.org/10.15372/FGV20210308.
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Seplyarskii, B.S., Kochetkov, R.A., Lisina, T.G. et al. Various Types of Combustion of a Ti + C Granular Mixture with a Different Content of the Gasifying Additive. Combust Explos Shock Waves 57, 334–342 (2021). https://doi.org/10.1134/S0010508221030084
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DOI: https://doi.org/10.1134/S0010508221030084