Abstract This work focuses on the oxidation resistance of a new class of composites, chromium carbide coated silicon carbide-nanostructured ferritic alloy (Cr3C2@SiC-NFA), in a water vapor containing atmosphere at 500–1000 °C. Oxidation temperature effects on surface morphologies, scale characteristics, and cross-sectional microstructures are investigated and analyzed. The Cr3C2@SiC content in the composites is strongly associated with the oxidation resistance by forming a dense Cr- and Si-rich inner-layer, which can be explained based on the Thermo-Calc simulation. The fundamental understandings offer important guidance for the applications of this class of composites in nuclear reactors and high temperature moist environments.

中文翻译：

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Cr 3 C 2 @SiC-NFA复合材料在水蒸气环境中的高温处理

摘要 本工作重点研究了一类新型复合材料碳化铬涂层碳化硅纳米结构铁素体合金 (Cr3C2@SiC-NFA) 在 500-1000 °C 的水蒸气气氛中的抗氧化性。研究和分析了氧化温度对表面形态、鳞片特征和横截面微观结构的影响。通过形成致密的富含 Cr 和 Si 的内层，复合材料中的 Cr3C2@SiC 含量与抗氧化性密切相关，这可以基于 Thermo-Calc 模拟进行解释。这些基本认识为此类复合材料在核反应堆和高温潮湿环境中的应用提供了重要指导。