Synthesis of transition metal carbonitrides
Abstract
Transition metal carbonitrides (in particular, titanium carbonitride, TiC.sub.0.5 N.sub.0.5) are synthesized by a self-propagating reaction between the metal (e.g., 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 .gtoreq.0.6 MPa. Thermodynamic phase-stability calculations and experimental characterizations of quenched samples provided revealed that the mechanism of 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.
- Inventors:
-
- Davis, CA
- Issue Date:
- Research Org.:
- Univ. of California (United States)
- OSTI Identifier:
- 869315
- Patent Number(s):
- 5314656
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- FG03-86ER45249
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- synthesis; transition; metal; carbonitrides; particular; titanium; carbonitride; tic; synthesized; self-propagating; reaction; carbon; nitrogen; atmosphere; complete; conversion; phase; achieved; addition; diluent; pressure; gtoreq; mpa; thermodynamic; phase-stability; calculations; experimental; characterizations; quenched; samples; provided; revealed; mechanism; formation; two-step; process; step; involves; nonstoichiometric; carbide; followed; product; incorporation; defect-structure; transition metal; nitrogen atmosphere; two-step process; samples provided; step process; complete conversion; propagating reaction; metal carbonitrides; metal carbon; titanium carbonitride; metal carbonitride; /419/75/
Citation Formats
Munir, Zuhair A. R., and Eslamloo-Grami, Maryam. Synthesis of transition metal carbonitrides. United States: N. p., 1994.
Web.
Munir, Zuhair A. R., & Eslamloo-Grami, Maryam. Synthesis of transition metal carbonitrides. United States.
Munir, Zuhair A. R., and Eslamloo-Grami, Maryam. Sat .
"Synthesis of transition metal carbonitrides". United States. https://www.osti.gov/servlets/purl/869315.
@article{osti_869315,
title = {Synthesis of transition metal carbonitrides},
author = {Munir, Zuhair A. R. and Eslamloo-Grami, Maryam},
abstractNote = {Transition metal carbonitrides (in particular, titanium carbonitride, TiC.sub.0.5 N.sub.0.5) are synthesized by a self-propagating reaction between the metal (e.g., 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 .gtoreq.0.6 MPa. Thermodynamic phase-stability calculations and experimental characterizations of quenched samples provided revealed that the mechanism of 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}
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