Abstract
1. A study was made of the conditions of preparation of TiC-WC solid solutions based on titanium carbide in its homogeneity region. It was found that, at all carbon contents, alloys containing up to 50 mole % WC have a single-phase fcc structure. At higher WC concentrations, such alloys consist of a TiCy-WC solid solution and free tungsten carbide. X-ray diffraction analysis failed to detect any solubility of TiC in WC. 2. With increasing carbon deficiency in titanium carbide, the solubility of tungsten carbide in this compound increases, the lattice constant sharply falls, and the grain size of the solid solution grows, which may be attributed to intensified electronic exchange between the atoms of the components and to increase in the statistical weight of atoms with stable configurations.
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