Title

Enhanced corrosion-resistance in nanocrystalline MoSi 2 films enabled by Cr additions

Document Type

Journal Article

Faculty

Faculty of Computing, Health and Science

School

School of Engineering

RAS ID

15181

Comments

This article was originally published as: Xu, J., Lai, D., Wu, J., Xie, Z. , & Munroe, P. (2012). Enhanced corrosion-resistance in nanocrystalline MoSi 2 films enabled by Cr additions. Surface and Coatings Technology, 206(23), 4947-4951.

Abstract

Nanocrystalline C40-structured (Mo 1-xCr x)Si 2 films were engineered onto Ti6Al4V substrates by a double glow discharge plasma technique. The electrochemical behavior of the newly developed films in a 3.5wt.% NaCl solution was characterized by electrochemical techniques including open circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy. To gain a deeper understanding of the role of Cr alloying in corrosion resistance, both cohesive energy and Mulliken population of the interatomic bonds in C40 (Mo 1-xCr x)Si 2 were calculated based on the first-principles density-functional theory.

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