6533b82bfe1ef96bd128e098

RESEARCH PRODUCT

From nitrides to carbides: topotactic synthesis of the η-carbides Fe3Mo3C and Co3Mo3C

E. MartínezFernando SapiñaSilvia Alconchel

subject

Inorganic ChemistryField electron emissionCrystallographyMaterials sciencechemistryScanning electron microscopeMolybdenumchemistry.chemical_elementNitrideThermal analysisBimetallic stripPowder diffractionCarbide

description

The molybdenum bimetallic interstitial carbides Fe(3)Mo(3)C and Co(3)Mo(3)C have been synthesized by temperature-programmed reaction (TPR) between the molybdenum bimetallic interstitial nitrides Fe(3)Mo(3)N and Co(3)Mo(3)N and a flowing mixture of CH(4) and H(2) diluted in Ar. These compounds have been characterized by X-ray diffraction, laser Raman spectroscopy, elemental analysis, energy dispersive analysis of X rays, thermal analysis (in air) and scanning electron microscopy (field emission). Their structures have been refined from X-ray powder diffraction data. These carbides crystallize in the cubic system, space group Fd3m[a= 11.11376(6) and 11.0697(3)[Angstrom] for Fe and Co compounds, respectively].

https://doi.org/10.1039/b404194a