Crystallization and Electrochemical Corrosion Behaviors of Amorphous and Nanocrystalline Fe-Based Alloys

Authors

Xiang LI, Shanghai Key Lab of Metal Functional Materials,School of Materials Sciences and Engineering,Tongji University,Shanghai 200092,China;
Biao YAN, Shanghai Key Lab of Metal Functional Materials,School of Materials Sciences and Engineering,Tongji University,Shanghai 200092,China;
Peng DONG, Shanghai Key Lab of Metal Functional Materials,School of Materials Sciences and Engineering,Tongji University,Shanghai 200092,China;

Abstract

In this study,amorphous Fe78Si13B9 and Fe73.5Si13.5B9Nb3Cu1 ribbons were prepared by the chill block melt-spinning process and nanocrystalline Fe73.5Si13.5B9Nb3Cu1 ribbons were obtained by annealing. The amorphous ribbons and their crystallization processes were identified by differential scanning calorimeter (DSC) and X-ray diffraction (XRD). A comparative study of the electrochemical corrosion behaviors of Fe78Si13B9 and Fe73.5Si13.5B9Nb3Cu1 amorphous and nanocrystallized alloys was performed by linear polarization method and electrochemical impedance spectroscopy (EIS) in 1mol/L NaOH solutions. The photographs of the samples after potentiodynamic polarization were observed by SEM. The influence of heat treatment on the alloys structure and corrosion resistance in 1mol/L NaOH solutions was investigated. The results show that the crystallization of amorphous ribbons occurs in two steps,nanocrystalline alloys have a higher corrosion resistance than amorphous alloys,and the corrosion resistances of amorphous and nanocrystalline alloys increase as thermal treatment temperature rises.

Keywords

amorphous, nanocrystalline, crystallization behavior, corrosion resistance, diffusion path

DOI Link

https://doi.org/10.61558/2993-074X.1993

Publication Date

2009-08-28

Online Available Date

2009-08-28

Revised Date

2009-08-28

Received Date

2009-08-28

Recommended Citation

Xiang LI, Biao YAN, Peng DONG. Crystallization and Electrochemical Corrosion Behaviors of Amorphous and Nanocrystalline Fe-Based Alloys[J]. Journal of Electrochemistry, 2009 , 15(3): 269-274.
DOI: 10.61558/2993-074X.1993
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss3/7