Corrosion behavior of bulk (Zr 58 Nb 3 Cu 16 Ni 13 Al 10 ) 100-x Y x (x = 0, 0.5, 2.5 at.%) metallic glasses in sulfuric acid

Linwen Yu , J. Tang (1) , H. Wang (2) , Y. Wang (3) , J. Qiao (4) , M. Apreutesei (4) , B. Normand (4)

1 Changchun Institute of Applied Chemistry
2 RIKEN RNC - RIKEN Nishina Center for Accelerator-Based Science [Wako]
3 Continental Dynamics Laboratory [CAGS Beijing]
4 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

Bulk (Zr 58 Nb 3 Cu 16 Ni 13 Al 10 ) 100-x Y x (x = 0, 0.5, 2.5 at.%) metallic glasses exhibited good passivation ability and outstanding corrosion resistance in de-aerated 0.5 mol/L H 2 SO 4 solution. It was mainly beneficial from the stable passive film which mainly consisted of ZrO 2 and Al 2 O 3 . However, the defects concentration in the passive films increased with the increasing yttrium content in the Zr-based BMGs. The yttrium additions improved the electrochemical homogeneities of the Zr-based BMGs, but facilitated the dissolution of Cu, resulting in a slight deterioration of corrosion resistance of the Zr-based BMGs. © 2019 Elsevier Ltd

Mots clés: Alumina; Aluminum oxide; Copper corrosion; Corrosion resistance; Corrosive effects; Deterioration; Electrochemical corrosion; Glass; Metallic glass; X ray photoelectron spectroscopy; Yttrium; Zirconia; Corrosion behavior; Mott-Schottky; Passive films; Scanning vibrating electrode technique; Zr based bulk metallic glass; Electrochemical impedance spectroscopy

Domaines: Matériaux

Linwen Yu, J. Tang, H. Wang, Y. Wang, J. Qiao, et al.. Corrosion behavior of bulk (Zr 58 Nb 3 Cu 16 Ni 13 Al 10 ) 100-x Y x (x = 0, 0.5, 2.5 at.%) metallic glasses in sulfuric acid. Corrosion Science, 2019, 150, pp.42-53. ⟨10.1016/j.corsci.2019.01.016⟩. ⟨hal-02405452⟩