Titanium carbide, nitride and carbonitrides: a 13C, 14N, 15N and 47,49Ti solid-state nuclear magnetic resonance study

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DOIResolve DOI: http://doi.org/10.1016/0926-2040(94)00051-D
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TypeArticle
Journal titleSolid State Nuclear Magnetic Resonance
ISSN0926-2040
Volume4
Issue4
Pages193201; # of pages: 9
Subject47,49Ti nuclear magnetic resonance; 13C nuclear magnetic resonance; 14,15N nuclear magnetic resonance; Titanium carbide; Titanium nitride; Titanium carbonitrides
AbstractThe first 47,49Ti, 13C, 14N and 15N solid-state nuclear magnetic resonance (NMR) spectra of titanium carbide, nitride and a series of cubic carbonitrides have been obtained under both static and magic-angle spinning (MAS) conditions. The 15N samples were isotopically enriched by gas-solid exchange at 1000 ° C in a closed system. The Ti spectra of the carbide and nitride are sharp, reflecting the well defined cubic symmetry of these compounds, but become considerably broadened in the carbonitride series, with the spectra being approximately the sum of TiC and TiN together with some small electric field gradient (EFG) effects. The resonance positions and widths of all the NMR spectra change as carbon is progressively replaced by nitrogen. A relationship is observed between the 13C chemical shift and the nitrogen content of the carbonitrides, suggesting a possible NMR method for estimating the composition of these compounds. Although electron paramagnetic resonance (EPR) spectra of all these compounds show typically metallic behaviour, the NMR spectra show few effects attributable to conduction electrons, probably due to the lack of s-orbital contributions to the conduction band.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number21276002
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Record identifierdcf4ddcc-2af8-4dc1-bdf9-79db4c189843
Record created2015-09-08
Record modified2016-05-09
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