亚化学计量碳化锆在等温空气中的高温氧化与氮化
High-temperature oxidation and nitridation of substoichiometric zirconium carbide in isothermal air
AI总结：
本文在1000–1600 °C等温空气中研究氮对热压碳化锆氧化行为的影响，发现1400 °C以上氮化与还原机制不可忽略，并分析了多晶型与微观结构的作用。
摘要：
利用流动管式炉在1000至1600 °C温度范围内研究了氮对热压碳化锆氧化行为的影响。在不同实验条件下评估了质量增加、氧化物形成特征和氧化物转变。所研究温度范围内氧化行为的差异显示出动力学和微观结构上的依赖性，其意义指向该材料在超高温应用中的有效性。结果表明，在1400 °C以上，尽管氧化机制仍占主导地位，但氮化和还原机制可能已足够显著而需要加以考虑。文中还概述了关于多晶型和微观结构影响的相关讨论。
英文摘要：
The influence of nitrogen on the oxidation behavior of hot-pressed zirconium carbide was investigated using a flow-tube furnace at temperatures ranging from 1000 to 1600 °C. Mass gain, oxide formation characteristics, and oxide transitions were evaluated at various experimental conditions. Differences in oxidation behavior across the range of temperatures investigated show both kinetic and microstructural dependence with implications pointing to this materials efficacy in ultra-high temperature applications. Results suggest that at temperatures above 1400 °C, although oxidation mechanisms remain dominant, nitridation and reduction mechanisms may be appreciable enough to require consideration. Supporting discussions regarding polymorphism and microstructural influences are outlined.
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