FIZIKA A 5 (1996) 2,  91-98

ORIENTATION-DEPENDENT ANTIMONY SEGREGATION ON FeSi ALLOY SURFACES

MONIKA JENKO, FRANC VODOPIVEC, HELMUT VIEFHAUS^a, MILORAD MILUN^b, TONICA VALLA^b, MATJAŽ GODEC and DARJA STEINER PETROVIČ
Institute of Metals and Technology, Ljubljana, Slovenia,
^aMax-Planck-Institute für Eisenforschung, Düsseldorf, Germany,
^bInstitute of Physics, University of Zagreb, Zagreb, Croatia

Received 12 January 1996

The antimony surface segregation was investigated on surfaces of a polycrystalline Fe-Si alloy with 0.05 wt. % Sb, under UHV conditions, in the temperature range from 450 to 950 ^°C. The grain boundary segregation in experimental alloys was negligible. It was concluded that the texture formation results from orientation-dependent effects of antimony on the surface energy and through them on grain boundaries. Controlled surface segregation promotes the selective grain growth.

UDC 538.971
PACS 68.35.-p

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