Abstract
Titanium carbonitride, TiC0.5N0.5, is synthesized directly by a self-propagating reaction between titanium and carbon in a nitrogen atmosphere. Complete conversion to the carbonitride phase is achieved with the addition of TiN as diluent and with a nitrogen pressure ≥0.6 MPa. Thermodynamic phase-stability calculations and experimental characterizations of quenched samples support a proposed mechanism in which the formation of the carbonitride is a two-step process. The first step involves the formation of the nonstoichiometric carbide, TiC0.5, and is followed by the formation of the product by the incorporation of nitrogen in the defect-structure carbide to form the carbonitride solid solution.
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Eslamloo-Grami, M., Munir, Z.A. The mechanism of combustion synthesis of titanium carbonitride. Journal of Materials Research 9, 431–435 (1994). https://doi.org/10.1557/JMR.1994.0431
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DOI: https://doi.org/10.1557/JMR.1994.0431