6533b7d2fe1ef96bd125ecc0

RESEARCH PRODUCT

Microwave-induced electromigration in multicomponent metallic alloys

Manuela StirR. NiculaK. IshizakiLaurent BernauJose-manuel Catala-civeraS. Vaucher

subject

Materials scienceChemical engineeringlawScanning electron microscopeEnergy-dispersive X-ray spectroscopyCrystallizationElectromigrationMicrowaveNanocrystalline materialPowder diffractionlaw.inventionAmorphous solid

description

The crystallization of amorphous FeCoCuZrAlSiB alloy ribbons during microwave heating was investigated in situ using time-resolved X-ray powder diffraction. The formation of the nanocrystalline α-(Fe,Co)(SiAl) phase during the primary crystallization stage is followed by the crystallization of the residual glassy matrix. Scanning electron microscopy analysis after microwave exposure reveals the formation of nanosized hillocks evenly distributed over the ribbon surfaces. Local chemical composition analysis by energy-dispersive spectroscopy shows that the surface clusters are enriched in Cu and Al. The occurrence of this typical electromigration effect imposes a strong restriction on the duration of the exposure of metallic ribbons to microwave fields and reinforces the need for prior characterization in particular by in situ time-resolved techniques.

yearjournalcountryeditionlanguage
2010-05-012010 IEEE MTT-S International Microwave Symposium
https://doi.org/10.1109/mwsym.2010.5516111