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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/23664

Title: The oxidation behavior of an Fe61B15Zr8Mo7Co5Y2Cr2 bulk metallic glass at 650oC in various oxygen-containing environments
Authors: W. Kai;I.F. Ren;R.F. Wang;P.C. Kao;C.T. Liu
Contributors: NTOU:Institute of Materials Engineering
Keywords: B. Oxidation;B. Glasses, metallic
Date: 2009
Issue Date: 2011-10-20T08:07:03Z
Publisher: Intermetallics
Abstract: Abstract:The oxidation behavior of an Fe61B15Zr8Mo7Co5Y2Cr2 bulk metallic glass (Fe7-BMG) was investigated in three oxygen-containing atmospheres over the oxygen partial pressure range of 103–105 Pa at 650 °C. The oxidation kinetics of the Fe7-BMG followed the parabolic rate law in all cases, indicating that solid-state diffusion is the rate-controlling step during oxidation. The oxidation rate constants (kp values) increased with increasing oxygen partial pressure, implying a typical scaling behavior with a p-type semiconductivity. Duplex scales formed on the Fe7-BMG consisted of an outer layer of mostly iron oxides (Fe2O3/Fe3O4) and minor amounts of B2O3, and a heterophasic inner layer of mostly tetragonal-ZrO2 (t-ZrO2) intermixed with non-oxidized intermetallic phases.
Relation: 17(3), pp.165–168
URI: http://ntour.ntou.edu.tw/handle/987654321/23664
Appears in Collections:[材料工程研究所] 期刊論文

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