Quantitative Analysis of Interfacial Chemistry in TiC/Ti Composite Using Electron-Energy-Loss Spectroscopy

摘要

Due to titanium carbide's physical and elastic properties, titanium carbide particles are widely used as a reinforcement in titanium-alloy-based composites. Previous studies have shown that no obvious reaction products were detected on the interface region in TiC/Ti alloy systems; instead, a nonstoichiometric region in the TiC particle between the Ti_6Al_4V alloy and the stoichiometric TiC was found.~[1] However, the nature and the extent of the nonstoichiometric zone have not been quantitatively described. The present communication reports some re-suits of a parallel electron-energy-loss spectroscopy (PEELS) study on a 10 vol pet TiC-particle-reinforced 1MI-829 metal-matrix composite. Alter slurry processing of the composite, samples were beat-treated for 1 hour at 800 deg C (sample A) and 1000 deg C 'sample B), respectively, and then air-cooled. Chemical "imposition was determined from electron-energy-loss spectra using the ratio technique.121