Oxidation behaviour of zirconium diboride–silicon carbide ceramic composites under low oxygen partial pressure
| Autor: | Dong Gao, Chunlai Xu, Yue Zhang, Chengyi Tian, Yang Song, Xiaobin Shi |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Zirconium diboride
Materials science Scanning electron microscope General Chemical Engineering Oxide General Chemistry Partial pressure Microstructure Corrosion chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Silicon carbide General Materials Science Ceramic Composite material |
| Zdroj: | Corrosion Science. 53:3742-3746 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2011.07.020 |
| Popis: | The oxidation behaviour of ZrB 2 -based ceramics under low oxygen partial pressure ranged from 0.5 to 1.5 kPa was investigated. Low oxygen partial pressure was found to have remarkable effect on phase composition of the surface and the structures of oxide scale. And the thickness and microstructures of oxide scale was characterized by using scanning electron microscopy and X-ray diffraction analysis. The results indicate that the oxidation mechanism of ZrB 2 -based ceramics changes under low oxygen partial pressure, and the oxidation resistance increases with the reduction of oxygen partial pressure. |
| Databáze: | OpenAIRE |
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