Abstract
The possibility of obtaining a nitride of the composition Si3N4-TiN of asigny systems Na2SiF6-NaN3-Na2TiF6, (NH4)2SiF6-NaN3-(NH4)2TiF6, Nа2SiF6-NaN3-(NH4)2TiF6, (NН4)2SiF6-NaN3-Na2TiF6 with different ratio of components in the starting material by technology of self-propagating high-temperature synthesis. It is established that the final product obtained is a fine (submicrocrystalline) powder of spherical and equiaxed shape with average particle size of 150-250 nm. The final product consists not only of Si3N4, TiN and Ti2N, but it includes by-products: silicon, titanium, titanium silicide TiSi2 and halide salt - hexaferrite sodium Na2TiF6. The presence of side products is due to the fact that the combustion temperature of the systems studied are not sufficient to undergo the necessary chemical reactions nitriding and obtain the nitride of the composition Si3N4-TiN without impurities.
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