Erosion and erosion-fatigue/creep behavior of N720A/alumina ceramic matrix composites in combustion environment

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2025-03-19 DOI:10.1111/jace.20489

Farhan Mirza, Ragav P. Panakarajupally, Christopher Ferguson, Gregory N. Morscher, Frank Abdi, Sung Choi

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引用次数: 0

Abstract

Solid particle erosion behavior of an oxide/oxide ceramic matrix composite (CMC) was evaluated under high-temperature, high-velocity conditions with novel incorporation of simultaneous fatigue and creep loading during erosion impact. Experiments were conducted at 800°C and 1200°C with two different velocities, 200 m/s and 350 m/s, respectively. Mass loss, erosion rate, and microscopy of erosion crater per impact were determined to evaluate the extent of damage incurred. Post-erosion room temperature tension tests were performed to determine retained strength of CMCs. The results show that cumulative mass loss and erosion rate increase with increase in temperature and velocity. Post-erosion tension tests reveal decrease in strength with increasing crater area. Fatigue performance decreased with respect to increased severity of erosive conditions. However, the decrease in fatigue performance was attributed for the most part to the increase in net-section stress acting on crater region and not on additional elevated temperature fatigue-induced degradation mechanism. By integrating fatigue and creep tests into erosion experiments, this study provides a framework for understanding combined effects of mechanical loading and erosion on oxide/oxide CMCs.

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燃烧环境下N720A/氧化铝陶瓷基复合材料的侵蚀和侵蚀疲劳蠕变行为

研究了氧化/氧化陶瓷基复合材料（CMC）在高温、高速条件下的固相颗粒冲蚀性能，同时考虑了疲劳和蠕变载荷。实验温度分别为800℃和1200℃，速度分别为200 m/s和350 m/s。测定了每次撞击的质量损失、侵蚀速率和侵蚀坑显微镜来评估所造成的损害程度。进行了侵蚀后室温拉伸试验以确定cmc的保留强度。结果表明，随着温度和速度的增加，累积质量损失和侵蚀速率增大。冲刷后拉伸试验表明，强度随火山口面积的增加而降低。疲劳性能随着腐蚀条件的严重程度的增加而下降。然而，疲劳性能的下降主要归因于作用于弹坑区域的净截面应力的增加，而不是额外的高温疲劳诱导降解机制。通过将疲劳和蠕变试验整合到侵蚀试验中，本研究为理解机械载荷和侵蚀对氧化/氧化cmc的综合影响提供了一个框架。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.