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 journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 629-635 |
| Journal / Publication | Intermetallics |
| Volume | 16 |
| Issue number | 5 |
| Publication status | Published - May 2008 |
| Externally published | Yes |
Link(s)
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
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)
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. et al.
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 journal › peer-review
