Effect of mass forces on combustion of heterogeneous systems with condensed combustion products

This paper investigates the principles of combustion of the system Ti-B. The experiments used type PTEM-1 and PTEK-0 titanium powders and 98.8% pure amorphous boron. Results of combustion rate measurements as a function of metal particle size and g-force f value are shown. It is evident that G has an effect only for sufficiently coarse titanium particles. The effects of g-forces of opposite signs differ qualitatively: positive G leads to increase in the combustion rate; negative G to reduction. Compression of the combustion products due to change in specimen length increases with increase in g-force of either sign, but does not exceed 30%. Flow of the melt under the action of a mass force is illustrated. It is noted that forced flow of a liquid in a combustion wave may also lead to an increase in reaction rate due to more complete mixing of the reagents.