Short-term oxidation and residual compression properties of needle-punched carbon/carbon composites

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Composite Materials Pub Date : 2024-03-13 DOI:10.1177/00219983241241119

Meng Han, Zhichao Wang, Xingyu Zhang, Yang Ni, Weixin Ma, Ge Qi, Xiujing Han, Vadim V. Silberschmidt, Chuwei Zhou

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引用次数: 0

Abstract

Needle-punched carbon/carbon (NP C/C) composite is widely used in rocket-engine nozzles and re-entry vehicles. Recyclable technology expedited the research on repeated oxidation and residual mechaincal properties of thermal-protection materials. In this study, the critical longitudinal compression strengths before and after oxidation are derived based on the Timoshenko beam theory. Three repetitions of short-term oxidation cycles and compression experiments are investigated. The average oxidation rate of this composite was 5∼6% in 10 min and kept linear increase. In-plane and out-of-plane compressive strengths of NP C/C composite diminish quasi-linearly due to oxidation at 1000°C, with their moduli decreasing in a periodically slow-sharp pattern. After three oxidation cycles, the levels of residual in-plane modulus and strength were 55.20% and 56.89%, respectively, while the resudual out-of-plane modulus and strength were 44.65% and 47.23%, respectively. The results showed that the material exhibited the pesudo-plastical behaviour after oxidation, cracks grew along the punched conical structures formed by the punching technology. In-plane and out-of-plane modulus were more sensitive than their strengths after first oxidation cycle.

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针刺碳/碳复合材料的短期氧化和残余压缩性能

针刺碳/碳（NP C/C）复合材料广泛用于火箭发动机喷嘴和重返大气层飞行器。可回收技术加快了对热防护材料的反复氧化和残余机械密封性能的研究。在这项研究中，根据季莫申科梁理论推导出了氧化前后的临界纵向压缩强度。研究了三次重复的短期氧化循环和压缩实验。该复合材料在 10 分钟内的平均氧化率为 5∼6%，并保持线性增长。NP C/C 复合材料的面内和面外抗压强度在 1000°C 氧化作用下呈近线性下降，其模量也呈周期性缓慢锐减模式。经过三个氧化循环后，残余面内模量和强度分别为 55.20% 和 56.89%，残余面外模量和强度分别为 44.65% 和 47.23%。结果表明，该材料在氧化后表现出 "钝塑性"，裂纹沿着冲孔技术形成的冲孔锥形结构生长。在第一个氧化周期后，面内和面外模量比强度更敏感。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Composite Materials 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.90%

发文量

274

审稿时长

6.8 months

期刊介绍： Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).