Abstract
The isothermal oxidation behavior of Cu- 38at.%Zn alloy over the temperature range of 773-1123 K was studied. Characterization of the oxidized specimens was conducted using X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the oxidation kinetics of Cu-38at.%Zn alloy obeys parabolic law. The activation energy during oxidation of the alloy is calculated to be 176 kJ mol-1, based on the parabolic growth constant analyses. An external ZnO oxide scale, internal ZnO oxide and a Zn depletion zone on substrate formed after alloy oxidation are discussed. The scale spallation from the substrate is analyzed, based on the growth stresses and thermal stresses induced during oxidation.
| Original language | English |
|---|---|
| Pages (from-to) | 267-272 |
| Number of pages | 6 |
| Journal | High Temperature Materials and Processes |
| Volume | 30 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Jun 2011 |
Keywords
- Activation energy
- Cu-Zn alloy
- Oxidation
- X-ray diffraction
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Physical and Theoretical Chemistry
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