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Title: Hydrogen effect on the sigma-phase in Fe53.8Cr46.2
Authors: Cieslak, J. 
Costa, B. F. O. 
Dubiel, S. M. 
Fruchart, D. 
Skryabina, N. E. 
Keywords: Fe-Cr alloy; Metal hydride; Structure transformation
Issue Date: 1-Sep-2008
Citation: Journal of Alloys and Compounds. In Press, Corrected Proof:
Abstract: Investigation of the stability and properties of a sigma-phase type compound Fe53.8Cr46.2 after electrochemical hydrogen treatment was made using X-ray diffraction and 57Fe Mössbauer spectroscopy techniques. The amount of the hydrogen uptake was estimated to be equal to ~1.2H per unit formula, and its presence leads to an anisotropic cell parameter expansion. However, the hydrogenated state appears as metastable with reference to the aged samples analyzed a few days to months after loading with hydrogen.
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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