http://scholars.ntou.edu.tw/handle/123456789/4481
Title: | The oxidation behavior of an Fe61B15Zr8Mo7Co5Y2Cr2 bulk metallic glass at 650 °C in various oxygen-containing environments | Authors: | Wu Kai Ren, I. F. Wang, R. F. Kao, P. C. Liu, C. T. |
Keywords: | B. Oxidation;B. Glasses, metallic | Issue Date: | Mar-2009 | Publisher: | Elsevier | Journal Volume: | 17 | Journal Issue: | 3 | Start page/Pages: | 165-168 | Source: | Intermetallics | 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. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/4481 | ISSN: | 0966-9795 | DOI: | 10.1016/j.intermet.2008.10.012 |
Appears in Collections: | 光電與材料科技學系 |
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