Premium
Auger Electron Spectroscopy Analysis of Cross‐Section Surface of Oxidized Titanium Carbide Single Crystal
Author(s) -
Bellucci Alessandra,
Gozzi Daniele,
Kimura Takashi,
Noda Tetsuji,
Otani Shigeki
Publication year - 2003
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2003.tb03618.x
Subject(s) - auger electron spectroscopy , titanium carbide , analytical chemistry (journal) , scanning electron microscope , x ray photoelectron spectroscopy , titanium , spectroscopy , electron spectroscopy , single crystal , materials science , chemistry , pyrolytic carbon , quadrupole mass analyzer , mass spectrometry , crystallography , nuclear magnetic resonance , pyrolysis , metallurgy , physics , chromatography , quantum mechanics , nuclear physics , composite material , organic chemistry
A TiC monocrystal was heated by three thermal cycles with isotherm at 1108 K while exposed to Ar/O 2 mixtures respectively with O 2 contents of 239, 1.0, and 324 ppm. The reactivity was detected with a homemade device based on two identical solid electrolyte oxygen sensors connected to a quadrupole mass spectrometer (QMS). The oxidized sample was cleaved by impact bending under high vacuum and the cross section investigated by Auger electron spectroscopy (AES) and scanning electron microscopy (SEM) techniques. Both area and profile AES spectra were acquired by using a 70 nm diameter beam. Spectral changes have been analyzed to identify chemical species present at the TiC/TiO 2 interface. A model for high‐temperature oxidation of TiC has been proposed. It implies oxygen diffusion through a protective TiO 2 layer and the existence of two inner interfaces: TiC/TiC 1− x O x and TiC 1− x O x /TiO 2 .