Local structure of NiAl compounds investigated by extended X-ray absorption fine-structure spectroscopy

Tian, J. S., Han, G. M., Wei, H., Jin, T. and Dargusch, M. S. (2012) Local structure of NiAl compounds investigated by extended X-ray absorption fine-structure spectroscopy. Journal of Synchrotron Radiation, 19 4: 503-507. doi:10.1107/S0909049512015646

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Author Tian, J. S.
Han, G. M.
Wei, H.
Jin, T.
Dargusch, M. S.
Title Local structure of NiAl compounds investigated by extended X-ray absorption fine-structure spectroscopy
Journal name Journal of Synchrotron Radiation   Check publisher's open access policy
ISSN 0909-0495
1600-5775
Publication date 2012-07
Sub-type Article (original research)
DOI 10.1107/S0909049512015646
Open Access Status File (Publisher version)
Volume 19
Issue 4
Start page 503
End page 507
Total pages 5
Place of publication Malden, MA United States
Publisher Wiley-Blackwell Publishing
Collection year 2013
Language eng
Formatted abstract
The local structures of pure NiAl and Ti-, Co-doped NiAl compounds have been obtained utilizing extended X-ray absorption fine-structure (EXAFS) spectroscopy. The results provide experimental evidence that Ni antisite defects exist in the Ni-rich NiAl compounds. The site preference of Ti and Co has been confirmed. Ti occupies the Al sublattice, while Co occupies the Ni sublattice. The structure parameters obtained by EXAFS were consistent with the X-ray diffraction results. Owing to the precipitation of α-Cr, the local structure of NiAl-Cr has not been obtained, making the site preference of Cr unclear.
Keyword NiAl compounds
Exafs
Local Structure
Site preference
Alpha Cr precipitation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
 
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Created: Thu, 15 Nov 2012, 14:32:38 EST by System User on behalf of School of Mechanical and Mining Engineering