A NEW PRECURSOR FOR SYNTHESIS OF REFRACTORY METAL CARBIDES

This paper deals with the possibility of using a new precursor for carbide production. The new precursor was coated with hydrocarbon refractory metals or their oxides. Synthesis was carried out in an atmosphere of argon (W and B) or nitrogen (Ti). X-ray diffraction data showed that synthesis of Ta, B, and Ti-B carbides was practically completely finished during 120 min at lower temperature in comparison with the conventional synthesis. Uniform distribution of carbon and the close contact between reactants was achieved with the coated precursor.