Journal
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
Volume 24, Issue 12, Pages 4863-4869Publisher
SPRINGER
DOI: 10.1007/s11665-015-1782-9
Keywords
corrosion; metallic glasses; oxidation; rapid solidification
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Funding
- National Science Center, Poland [DEC-2011/02/A/ST8/00280]
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The oxidation behavior of Zr43Cu45Al12 bulk metallic glass was studied over the temperature range 400-525 A degrees C in air atmosphere. The oxidation kinetics of the material changes significantly, from the parabolic one in 400 A degrees C to logarithmic kinetics in T = 450 A degrees C and higher. The inversion of oxidation kinetics was observed. Composition of the scale varied over the examined temperature range, consisting mostly of monoclinic ZrO2, tetragonal ZrO2 and CuO, with minor amounts of alpha-Al2O3 within whole temperature range and Cu2O in temperatures 400 and 450 A degrees C. The alpha-Al2O3 presence can be correlated with decrease of oxidation rate in the higher temperatures.
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