Author/Authors :
Nie، نويسنده , , X.P. and Yang، نويسنده , , X.H. and Ma، نويسنده , , Y. and Chen، نويسنده , , L.Y. and Yeap، نويسنده , , K.B. and Zeng، نويسنده , , K.Y. and LI، نويسنده , , D. and Pan، نويسنده , , J.S. and Wang، نويسنده , , X.D. and Cao، نويسنده , , Q.P. and Ding، نويسنده , , S.Q. and Jiang، نويسنده , , J.Z.، نويسنده ,
Abstract :
Oxide films of 0.72 μm and 1.80 μm were prepared by thermal oxidation treatments at 441 K and 609 K respectively. The oxidation kinetics of the Zr46Cu37.6Ag8.4Al8 bulk metallic glass has been investigated. The outermost surface of the oxide film formed at 609 k is Cu2O and Al2O3-enriched but ZrO2-depleted. A ZrO2-enriched oxide layer is detected existing at 150–260 nm of the oxide film. The surface oxidation state sheds great influence on the corrosion behavior of Zr-based BMG. The oxide film can hinder the initial electrodissolution processes during polarization in 0.5 M H2SO4 + 0.01 M NaCl solution. The special structure and composition distribution of the oxide film lead to the modification of the BMG’s corrosion behavior.
Keywords :
A. Intermetallics , miscellaneous , B. Oxidation , B. Corrosion , F. Electron microscopy , scanning , F. Corrosion behavior
