Microanalysis of an oxidized cobalt oxide: Zirconia eutectic
Conference
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OSTI ID:10127720
- Oak Ridge National Lab., TN (United States)
- Minnesota Univ., Minneapolis, MN (United States). Dept. of Chemical Engineering and Materials Science
- Laboratoire de Chimie des Solides, Universite de Paris-Sud, Batiment, Orsay Cedex (France)
The compositions of CoO, Co{sub 3}O{sub 4}, and Ca-stabilized cubic ZrO{sub 2} in an oxidized directionally solidified CoO-ZrO{sub 2} eutectic were determined by PEELS and EDS. An oxygen gradient exists across the Co{sub 3}O{sub 4} with highest levels near the ZrO{sub 2} interface. Oxygen ELNES for CoO and Co{sub 3}O{sub 4} are quite different; published oxygen ELNES have been incorrectly attributed to CoO. Normalized Co-L{sub 23} white line intensity (WLI) ratios for CoO and Co{sub 3}O{sub 4} are similar (0.53 {plus_minus} 0.02) but L{sub 3}/L{sub 2} WLI ratios are 3.88 and 2.58, respectively. ELCE data suggest Co{sub 3}O{sub 4} has the inverse spinel structure.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10127720
- Report Number(s):
- CONF-930956--2; ON: DE94007209; CNN: Grant DMR-8901218
- Country of Publication:
- United States
- Language:
- English
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