Structure and nano-mechanical characteristics of surface oxide layers on a metallic glass

Arnaud Caron, C. L. Qin, L. Gu, Sergio Gonzalez Sanchez, A. Shluger, H.-J. Fecht, Dimitri Louzguine-Luzgin, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


Owing to their low elastic moduli, high specific strength and excellent processing characteristics in the undercooled liquid state, metallic glasses are promising materials for applications in micromechanical systems. With miniaturization of metallic mechanical components down to the micrometer scale, the importance of a native oxide layer on a glass surface is increasing. In this work we use TEM and XPS to characterize the structure and properties of the native oxide layer grown on Ni62Nb38 metallic glass and their evolution after annealing in air. The thickness of the oxide layer almost doubled after annealing. In both cases the oxide layer is amorphous and consists predominantly of Nb oxide. We investigate the friction behavior at low loads and in ambient conditions (i.e. at T = 295 K and 60% air humidity) of both as-cast and annealed samples by friction force microscopy. After annealing the friction coefficient is found to have significantly increased. We attribute this effect to the increase of the mechanical stability of the oxide layer upon annealing.
Original languageEnglish
Pages (from-to)095704
Issue number9
Publication statusPublished - 27 Jan 2011


Dive into the research topics of 'Structure and nano-mechanical characteristics of surface oxide layers on a metallic glass'. Together they form a unique fingerprint.

Cite this