The mechanism of combustion synthesis of titanium carbonitride

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1994.0431· OSTI ID:5258164

Eslamloo-Grami, M; Munir, Z A ^[1]

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1. Department of Mechanical, Aeronautical and Materials Engineering, University of California at Davis, Davis, California 95616-5294 (United States)

Titanium carbonitride, TiC[sub 0.5]N[sub 0.5], 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 [ge]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, TiC[sub 0.5], 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.

• OSTI ID: 5258164
• Journal Information: Journal of Materials Research; (United States), Journal Name: Journal of Materials Research; (United States) Vol. 9:2; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
CARBIDES
CARBON COMPOUNDS
CHEMICAL REACTIONS
COMBUSTION
DISPERSIONS
ELEMENTS
MEDIUM PRESSURE
MIXTURES
NITRIDES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
OXIDATION
PNICTIDES
REACTION INTERMEDIATES
SOLID SOLUTIONS
SOLUTIONS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TITANIUM NITRIDES
TRANSITION ELEMENT COMPOUNDS