Title

Erosion–corrosion resistance of a β-Ta2O5 nanocrystalline coating in two-phase fluid impingement environments

Document Type

Journal Article

Publisher

Taylor & Francis Group

School

School of Engineering

Funders

Funding information available at: https://doi.org/10.1080/02670836.2019.1597483

Comments

Originally published as: Xu, J., Peng, S., Jiang, S., Munroe, P., & Xie, Z. H. (2019). Erosion–corrosion resistance of a β-Ta2O5 nanocrystalline coating in two-phase fluid impingement environments. Materials Science and Technology, 35(8), 925-938. Original publication available here

Abstract

In this study, a β-Ta2O5 coating was deposited onto a Ti–6Al–4V substrate using a double-cathode glow discharge plasma technique. The hardness and elastic modulus values of the β-Ta2O5 coating were almost 4 times and 1.8 times greater than that of the Ti–6Al–4V substrate, respectively. Potentiodynamic polarisation curves indicated that the current densities of the β-Ta2O5 coated sample are least one order of magnitude less than that observed for the uncoated substrate under a solid/liquid slurry flow. Electrochemical impedance spectroscopy results showed that the resistance values for the β-Ta2O5 coating are of the order of 106 Ω cm2, and at the same erosion time, the resistance value for the β-Ta2O5 coating is one order of magnitude greater than that of the Ti–6Al–4V.

DOI

10.1080/02670836.2019.1597483

Share

 
COinS