Synthesis of composite materials using borate ore RK in the SHS mode
DOI:
https://doi.org/10.18321/cpc20(4)323-330Keywords:
self-propagating high-temperature synthesis, borate ore, mechanical activation, chromium borides, zirconium boride and carbideAbstract
The article presents experimental results on the production of composites based on the Cr2O3-В203-Al and ZrSiO4-Al-B2O3-С systems using borate ore from the Inder deposit of the Republic of Kazakhstan with a wide variation in the concentration ratios of components in the initial mixtures by self-propagating high-temperature synthesis (SHS), which is a type of combustion. It is shown that the products of exothermic interaction in the combustion process are high-temperature compounds of chromium borides, zirconium, zirconium carbide. Aluminum oxide, which also has a high melting point, forms a dispersed phase and a ceramic bond in a ceramic composite. The influence of the composition of the initial charge, preliminary mechanical activation before the SHsynthesis on the formation of the microstructure and the composition of the obtained composite materials are established. The possibility of using borates from the Inder deposit of the Republic of Kazakhstan as a boron-containing component in the preparation of composite materials by the SHS method is shown.
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