期刊
CORROSION SCIENCE
卷 76, 期 -, 页码 182-191出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.06.041
关键词
Weight loss; XRD; SEM; Oxidation; Kinetic parameters; Thermodynamic diagrams
资金
- National Scientific Instrument and Equipment Development Project [2011YQ14014504]
The effects of ZrB2 and ZrB2 + SiC additions on the oxidation kinetics of graphite at 1600-2000 degrees C in air were investigated. The ZrB2 + SiC dual addition improves the oxidation resistance of graphite more effectively than the ZrB2 single addition, because the oxide scale formed on C-ZrB2-SiC is denser and thinner due to the existence of glassy SiO2. As the oxidation temperature increases, the oxidation rate of C-ZrB2-SiC gradually increases and oxide scales with layered microstructures form on its surface due to the greatly enhanced active oxidation of SiC at higher temperatures. (C) 2013 Elsevier Ltd. All rights reserved.
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