Oxidation behavior of the (Cu78Y22)98Al2 bulk metallic glass containing Cu5Y-particle composite at 400-600 °C

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • T. H. Ho
  • I. F. Jen
  • P. Y. Lee
  • Y. M. Yang
  • T. S. Chin

Detail(s)

Original languageEnglish
Pages (from-to)629-635
Journal / PublicationIntermetallics
Volume16
Issue number5
Publication statusPublished - May 2008
Externally publishedYes

Abstract

The oxidation behavior of the (Cu78Y22)98Al2 bulk metallic glass containing ∼55% Cu5Y particles (CYA-composite) was studied over the temperature range of 400-600 °C in dry air. The results generally showed that the oxidation kinetics of the composite obeyed a two-stage parabolic-rate law, with its steady-state parabolic-rate constants (kp values) increased with temperature. In addition, the oxidation rates of the composite were significantly lower than those of the polycrystalline Cu-20%Y alloy. The scales formed on the composite consisted mostly of hexagonal-Y2O3 (h-Y2O3) and minor CuO, while significant amounts of Cu2O and CuO, with minor amounts of Y2O3 were detected for the Cu-20%Y alloy. It was found that the absence of Cu2O is responsible for the slower oxidation rates of CYA-composite. © 2008 Elsevier Ltd. All rights reserved.

Research Area(s)

  • A. Composites, B. Oxidation

Bibliographic Note

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Citation Format(s)

Oxidation behavior of the (Cu78Y22)98Al2 bulk metallic glass containing Cu5Y-particle composite at 400-600 °C. / Kai, W.; Ho, T. H.; Jen, I. F.; Lee, P. Y.; Yang, Y. M.; Chin, T. S.

In: Intermetallics, Vol. 16, No. 5, 05.2008, p. 629-635.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review