Towards detailed oxidation depth and weight loss: A computational and kinetic modeling study of Carbon/Carbon composites oxidation

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composite Structures Pub Date : 2025-03-24 DOI:10.1016/j.compstruct.2025.119118

Fan Zhang, Hongjian Zhang, Shuai Liu, Haitao Cui, Zheyuan Lai

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Abstract

Carbon/Carbon(C/C) composites are increasingly applied in hot-end components of aero-engines due to superior high-temperature mechanical properties. However, C/C composites are susceptible to oxidation under high-temperature conditions, restricting the application of C/C composites. In this research, a three-dimensional diffusion oxidation kinetic model in the diffusion-controlled oxidation stage was established for C/C composites with an anti-oxidation coating based on mass transfer and diffusion theory. Subsequently, the relationship between oxidation amount and crack oxidation propagation depth with oxidation time was calculated. The oxidation damage of C/C composites in the atmosphere at 700 °C ∼900 °C was evaluated by weight loss analysis and scanning electron microscopy (SEM) experimentally. Compared with the oxidation kinetic model, the measured values of oxidation weight loss and oxidation depth were in good agreement with the prediction of the model with the maximal error of 7.55 % and 10.87 % respectively, verifying the reliability of the model. Additionally, the sensitivity of oxidation depth to oxidation duration, oxygen partial pressure (OPP) and coating thickness at different temperature are analyzed, aiming to provide a model to predict the oxidation degree and provide reliable recommendations for thermal protection and antioxidant design of C/C composites.

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走向详细的氧化深度和重量损失：碳/碳复合材料氧化的计算和动力学建模研究

碳/碳（C/C）复合材料由于具有优异的高温力学性能，在航空发动机热端部件中得到越来越多的应用。然而，C/C复合材料在高温条件下容易氧化，限制了C/C复合材料的应用。本研究基于传质扩散理论，建立了含抗氧化涂层的C/C复合材料扩散控制氧化阶段的三维扩散氧化动力学模型。随后，计算了氧化量和裂纹氧化扩展深度随氧化时间的关系。通过失重分析和扫描电镜（SEM）实验评价了C/C复合材料在700°C ~ 900°C大气中的氧化损伤。与氧化动力学模型比较，氧化失重和氧化深度的实测值与模型预测值吻合较好，最大误差分别为7.55%和10.87%，验证了模型的可靠性。分析了不同温度下氧化深度对氧化持续时间、氧分压（OPP）和涂层厚度的敏感性，旨在建立预测氧化程度的模型，为C/C复合材料的热防护和抗氧化设计提供可靠的建议。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.