Abstract
Relevant to the self-propagating high-temperature synthesis (SHS) process for the Ti-Al system, burning velocity and the range of flammability are examined theoretically. The heterogeneous theory for SHS flame propagation, presented in the literature is used. It is found that the effects of particle size, mixture ratio, degree of dilution, and initial temperature on the burning velocity and/or the range of flammability are the same as those for other representative systems. It has been confirmed that even for the Ti-Al system, a parameter defined as a product of the burning velocity and the particle size can be useful in correlating experimental results for flame propagation. It has also been confirmed that a parameter defined as the square of particle size divided by the compact diameter can be useful in correlating experimental results for flame extinction. In addition, it has been demonstrated that a fair degree of agreement exists between theoretical results and experimental data in the literature, as far as the trend and approximate magnitude are concerned.
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