Effects of Si addition on the oxidation behavior of a Cu-Zr-based bulk metallic alloy

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

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Author(s)

  • W. Kai
  • P. C. Kao
  • P. C. Lin
  • I. F. Ren
  • J. S C Jang

Detail(s)

Original languageEnglish
Pages (from-to)1994-1999
Journal / PublicationIntermetallics
Volume18
Issue number10
Publication statusPublished - Oct 2010
Externally publishedYes

Abstract

The effect of Si addition on the oxidation of (Cu 43Zr 43Al 7Ag 7) 99.5Si 0.5 bulk metallic glass (CZ43S-BMG) was investigated over the temperature range of 375-500 °C in dry air. The results generally showed that the oxidation rates of the CZ43S-BMG followed a multi-stage parabolic-rate law, and the oxidation rate constants (k p values) fluctuated with increasing temperature. It was found that the k p values of the CZ43S-BMG were slightly slower than those of the Si-free glassy alloy (Cu 43Zr 43Al 7Ag 7, named as CZ43-BMG). The scales formed on the CZ43S-BMG strongly depend on temperature, consisting of 3 different modifications of ZrO 2 and CuO, and minor amounts of Cu 2O (formed at T ≥ 425 °C) and Al 2O 3 (only detected at 500 °C). In addition, the glassy substrate remained amorphous nature at T ≤ 400 °C, while it transferred to the crystalline phases of Cu 10Zr 7, ZrAl, and ZrSi 2 after the oxidation at higher temperatures. © 2010 Elsevier Ltd. All rights reserved.

Research Area(s)

  • B. Glasses, metallic, B. 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)

Effects of Si addition on the oxidation behavior of a Cu-Zr-based bulk metallic alloy. / Kai, W.; Kao, P. C.; Lin, P. C.; Ren, I. F.; Jang, J. S C.

In: Intermetallics, Vol. 18, No. 10, 10.2010, p. 1994-1999.

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