Influence of a fiberous carboneous reagent on the process of carbon-thermal reduction of boron, tungsten, and silicon oxides is investigated. It is established that activated carbon fibers also form the morfology of a product. Boron, tungsten, and silicon carbides are formed as polycrystalline fibers, which are similar to the carbon reagent, and consist of small-jointed nanodimensional particles. Similarity of morphologies of the reagent and product is a bright evidence for the formation of carbides through gas-transported reactions. It is shown that the silicon carbide product includes simultaneously <$E alpha>-SiC filamentous crystals and <$E beta>-SiC monocrystalline particles. The surface state of the fiber-like carbides is investigated by XPS and Auger-spectroscopy.

• Фоменко Веніамін Васильович (хімічні науки)

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