Dependence of the burning rate of transition-metal-boron systems on the component ratio

Abstract

The dependence of the propagation velocity of the chemical reaction wave on the composition of the starting mixture is an important characteristic of combustion processes and is described in this article. In analyzing these dependences for group IV metal (Ti, Zr, Hf)-boron systems, the authors concluded that metastable zirconium monoboride, which was absent from the end products, may be formed in the combustion wave. Other conclusions are described. The results of comparing the calculated burning rates of mixtures of group IV metals and boron with the available experimental data are presented. A discussion of the reasons for the stage type of temperature profile in the combustion of transition metals and boron, detected in certain mixture compositions is discussed.