High-temperature oxidation resistance of dense amorphous boron-rich SiBCN monoliths
High-temperature oxidation behavior of dense amorphous boron-rich Si 2 B 1-4 C 2 N monoliths in flowing air was studied in detail. The oxidation products are those of amorphous silica and cristobalite that control the diffusion of oxygen inward. Oxygen diffusion leads to a dense and passivating scale, which acts as a barrier to oxygen. Amorphous boron-rich monoliths oxidize through a classical parabolic manner. The amorphous nature, three-layers structure of oxide scale and varying chemical bonds are primarily responsible for the oxidation resistance with respect to the nano monoliths. The increase in boron content is revealed to weaken the oxidation resistance of the amorphous Si 2 B 1-4 C 2 N monoliths.
研究领域:
材料科学
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无机非金属材料
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高温功能材料
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陶瓷基复合材料
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表面与界面化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）