6533b870fe1ef96bd12cf07f
RESEARCH PRODUCT
Corrosion resistance of the FeAlC permanent magnet alloy
J. J. WyslockiS. SzymuraHenryk BalaK. Gizasubject
Materials scienceMechanical EngineeringAlloyMetallurgyMetals and AlloysGeneral Chemistryengineering.materialMicrostructureKinetic energyCorrosionAtmospheric corrosionMechanics of MaterialsMagnetEtchingMaterials ChemistryengineeringPolarization (electrochemistry)description
Abstract The correlation between corrosion behaviour rate of hard magnetic FeAlC alloys and their microstructure and phase composition is presented. Potentiokinetic polarization curves of the tested material in acid (pH = 1 and 2) and neutral (pH = 7) sulphate solutions have been measured. For open-circuit condition, kinetic curves of etching of the samples in 0.5 M H2SO4 have been determined. The resistance of the tested magnets against atmospheric corrosion has been evaluated using a salt-spray test. The atmospheric corrosion rate is 1.5–2 times slower than that found for Nd-Fe-B type magnets. The FeAlC alloys show good corrosion resistance in neutral environments and corrode at rates comparable to that of white cast-iron in acid environments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-01-01 | Intermetallics |