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Titolo:
Recent studies on diffusion in intermetallics by Mossbauer spectroscopy and nuclear resonant scattering of synchrotron radiation
Autore:
Vogl, G;
Indirizzi:
Univ Vienna, Inst Mat Phys, A-1090 Vienna, Austria Univ Vienna Vienna Austria A-1090 Inst Mat Phys, A-1090 Vienna, Austria
Titolo Testata:
HIGH TEMPERATURE MATERIALS AND PROCESSES
fascicolo: 5-6, volume: 18, anno: 1999,
pagine: 293 - 304
SICI:
0334-6455(199907)18:5-6<293:RSODII>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELASTIC NEUTRON-SCATTERING; IRON ATOMS; PHASES; JUMP; HYDROGEN; LATTICE; ALLOYS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Vogl, G Univ Vienna, Inst Mat Phys, Strudlhofgasse 4, A-1090 Vienna, Austria Univ Vienna Strudlhofgasse 4 Vienna Austria A-1090 ienna, Austria
Citazione:
G. Vogl, "Recent studies on diffusion in intermetallics by Mossbauer spectroscopy and nuclear resonant scattering of synchrotron radiation", HIGH TEMP M, 18(5-6), 1999, pp. 293-304

Abstract

The extremely high energy resolution of Mossbauer spectroscopy permits thedetermination of the elementary diffusion jump of iron atoms in crystalline solids. This is accomplished through the interference of gamma-radiation emitted from or absorbed at diffusing Fe-57 atoms. Measurements at single crystals oriented in different directions relative to the gamma-radiation provide information not only on the jump frequency, but also on the jump vector of the diffusing atom. Two intermetallic alloy systems have been studied:(a) Fe-Al in the composition range between equiatomic stoichiometry (ordered Fe50Al50, B2 structure) and Fe72Al28 (disordered at high temperature, A2structure). (b) Fe-Si at compositions close to Fe3Si (D0(3) structure). We also report on the first investigations of the elementary diffusion jump in intermetallics with the new method of nuclear resonant scattering of synchrotron radiation. The prospects of this method are that measurements attiny samples in short times and hopefully even on systems without iron will be possible.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 17:05:52