Air-oxidation behavior of a Cu 60Hf 25Ti 15 bulk metallic glass at 375-520 °c

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

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Author(s)

  • W. Kai
  • H. H. Hsieh
  • T. H. Ho
  • R. T. Huang
  • Y. L. Lin

Detail(s)

Original languageEnglish
Pages (from-to)177-192
Journal / PublicationOxidation of Metals
Volume68
Issue number3-4
Publication statusPublished - Oct 2007
Externally publishedYes

Abstract

The oxidation behavior of a Cu 60Hf 25Ti 15 bulk metallic glass was studied over the temperature range of 375-520 °C in dry air. The oxidation kinetics of the amorphous alloy generally followed the parabolic law at all temperatures, with an oxidation rate increasing with temperature. The oxidation rates of the amorphous alloy were much higher than those of polycrystalline pure-Cu, implying that the additions of Hf and Ti accelerated the oxidation reaction. The composition of the scales formed on the amorphous alloy was strongly temperature-dependent, since they consisted mostly of Cu 4O 3 and CuO with minor amounts of HfO 2 at T ≤ 450 °C, while mostly CuO with minor amounts of HfO 2 and Cu 2TiO 3 were detected at higher temperatures. In addition, nanocrystalline Cu 51Hf 14 and Cu 3Ti 2 phases were detected on the substrate after oxidation at T ≤ 450 °C, indicating the occurrence of phase transformation. © 2007 Springer Science+Business Media, LLC.

Research Area(s)

  • Bulk metallic glass, Cu 2TiO 3, Cu 4O 3, CuO, HfO 2, Oxidation

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Air-oxidation behavior of a Cu 60Hf 25Ti 15 bulk metallic glass at 375-520 °c. / Kai, W.; Hsieh, H. H.; Ho, T. H.; Huang, R. T.; Lin, Y. L.

In: Oxidation of Metals, Vol. 68, No. 3-4, 10.2007, p. 177-192.

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