Journal
CORROSION SCIENCE
Volume 53, Issue 6, Pages 2344-2349Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.03.024
Keywords
Ceramic matrix composites; SEM; Oxidation
Funding
- China Postdoctoral Science Foundation [20100481220]
- Fundamental Research Funds for the Central Universities [3014-852001, DUT10ZDG05]
- National Natural Science Foundation of China [51002019, 91016024]
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In the present work, isothermal oxidation of a ZrB2-(20 vol.%) SiC-(6 vol.%) ZrC (ZrB2-SiC-ZrC) ceramic was carried out at a constant temperature of 1600 +/- 15 degrees C in static air, and the microstructures of the surface and fractured surface of the oxidised specimen were observed using SEM. The change curve of weight change/unit area with increasing oxidation time was composed of four stages according to the increase in the oxidation time: initial, middle, middle-late and late. In the different stages, a mathematical model was formulated to interpret the oxidation behaviour of the ZrB2-SiC-ZrC ceramic at high temperature. (C) 2011 Elsevier Ltd. All rights reserved.
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