Corrosion behavior of non-equilibrium Zr-Sn-Nb-Fe-Cu-O alloys in high-temperature 0.01M LiOH aqueous solution and degradation of the surface oxide films

Document Type

Journal Article

Publication Title

Corrosion Science

Publisher

Elsevier Ltd

School

School of Engineering

RAS ID

26721

Comments

Chen, L. Y., Shen, P., Zhang, L., Lu, S., Chai, L., Yang, Z., & Zhang, L. C. (2018). Corrosion behavior of non-equilibrium Zr-Sn-Nb-Fe-Cu-O alloys in high-temperature 0.01 M LiOH aqueous solution and degradation of the surface oxide films. Corrosion Science, 136, 221-230. Available here

Abstract

This work uses qualitative analyses to investigate the corrosion behavior of two non-equilibrium Zr-Sn-Nb-Fe-Cu-O alloys in 0.01 M LiOH aqueous solution at 360 °C/18.6 MPa. Precipitates of second-phase particles (SPPs) and local recrystallization in the matrix are observed near the oxide/metal interface during extended periods of corrosion. Oxides formed on both alloys exhibit different hardness and gradually degrade. The oxides embedded with more SPPs show a lower hardness and therefore break down earlier. The variations of non-equilibrium microstructures of the substrates influence the properties of the oxides, thereby determining the corrosion performance of the alloys.

DOI

10.1016/j.corsci.2018.03.012

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