Point defect structure and 57Fe hyperfine parameters of Fe-Al powders doped with Ni, Cu and Cr additions | Zendy

Aneta Hanc | Zendy; Janusz E. Frąckowiak | Zendy; L. Pająk | Zendy; Grzegorz DERCZ | Zendy

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Point defect structure and 57Fe hyperfine parameters of Fe-Al powders doped with Ni, Cu and Cr additions

Author(s) -

Aneta Hanc,

Janusz E. Frąckowiak,

L. Pająk,

Grzegorz DERCZ

Publication year - 2008

Publication title -

chemistry of metals and alloys

Language(s) - English

Resource type - Journals

eISSN - 1998-8087

pISSN - 1998-8079

DOI - 10.30970/cma1.0042

Subject(s) - hyperfine structure , vacancy defect , mössbauer spectroscopy , materials science , chromium , nickel , copper , metal , analytical chemistry (journal) , doping , decomposition , spectroscopy , atom (system on chip) , metallurgy , crystallography , chemistry , atomic physics , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics , computer science , embedded system

In the present work Fe-Al-X (X=Cu;Ni;Cr) metallic powders produced by the self-decomposition method of Fe-Al doped alloys were examined by Mıssbauer spectroscopy. The concentration of Fe vacancies and Fe atoms substituting for Al (Fe-AS) was determined from the intensities of the sub-spectra in the Mıssbauer analysis connected with distinct Fe environments. The results show that nickel and copper produce an increase of the vacancy concentration in comparison with the values found for Fe-Al metallic powders, whereas chromium decreases the vacancy concentration, causing a significant increase of the anti-site atom Fe-AS concentration.

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