Oxidation Behavior of Cu-Si Alloys with Different Compositions

Authors: Su, Yong; Fu, Guangyan; Liu, Qun; Jin, Ying; Shang, Xiaoxi

Source: Advanced Science Letters, Volume 5, Number 1, January 2012 , pp. 302-305(4)

Publisher: American Scientific Publishers

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Abstract:

To study the effect of Si content on high-temperature oxidation of alloys, the oxidation behaviour of casting (denoted as CA) Cu-Si alloys was studied at 700 and 800 °C in pure O₂. The oxidation kinetics shows that the oxidation rate of each alloy increases with the increasing temperature, and that as the content of Si in alloys increases, the oxidation rates of both alloys are reduced. The oxide scales were examined by XRD, SEM and EDX. The results show that both of the alloys formed similar complex scales like CuO → Cu₂O → Cu₂O + SiO₂ → internal oxidation zone, and did not form continuous layers of SiO₂. The affection mechanism was also discussed.

Keywords: CASTING ALLOYS; CU-SI ALLOY; HIGH-TEMPERATURE OXIDATION

Document Type: Research article

DOI: http://dx.doi.org/10.1166/asl.2012.1956

Publication date: 2012-01-01

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ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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