Abstract

TiC x N 1− x –TiB 2 ceramic composites were prepared by combustion synthesis in a high-gravity field in air. The high-gravity field caused no change in phase composition but resulted in reduced delamination and grain refinement in the microstructure of the products. In a high-gravity field of 100 g, well-developed faceted grains with a narrow size distribution were obtained. It is proposed that the combustion reaction happened by a pulsating combustion mode and the pulsating period was prolonged by the high-gravity field.

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