Thermal-mechanical behavior of a SiC/SiC CMC subjected to laser heating

Whitlow, Travis; Pitz, Jeremey; Pierce, J. L.; Hawkins, Stephen C.; Samuel, A. Jonathan; Kollins, Kaitlin; Jefferson, George; Jones, Ε. L.; Vernon, Jonathan P.; Przybyla, Craig

doi:10.1016/j.compstruct.2018.11.046

Cited by 21 publications

(5 citation statements)

References 22 publications

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“…In general, relevant studies have shown that the interphase, preparation process, fiber architecture, loading mode, etc. will have a significant impact on the failure mechanism of CMC [38][39][40][41]. Therefore, it is necessary to fully consider all the damage modes, as well as the effect of these factors on the failure mode of CMC.…”

Section: Failure Mechanism Of Ceramic Matrix Compositesmentioning

confidence: 99%

A Review on Ceramic Matrix Composites and Environmental Barrier Coatings for Aero-Engine: Material Development and Failure Analysis

2023

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Ceramic matrix composites with environmental barrier coatings (CMC/EBCs) are the most promising material solution for hot section components of aero-engines. It is necessary to access relevant information and knowledge of the physical properties of various CMC and EBCs, the characteristics of defects and damages, and relevant failure mechanisms. Then, effective failure prediction models can be established. Individually assessing the failure of CMC and EBCs is not a simple task. Models considering the synergetic effect of coating properties and substrate fibrous architecture are more reasonable and more challenging. This paper offers a review and a detailed description of the materials features, failure mechanism, and failure modeling for both CMC substrate and EBC coatings. The various methods for failure analyses and their pros and cons are discussed. General remarks on technical development for failure modeling are summarized subsequently.

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Section: Failure Mechanism Of Ceramic Matrix Compositesmentioning

confidence: 99%

A Review on Ceramic Matrix Composites and Environmental Barrier Coatings for Aero-Engine: Material Development and Failure Analysis

2023

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“…SiC ceramics, due to their excellent highstrength properties, radiation resistance, oxidation resistance, and so forth, have aroused extra attention in military and civil applications. [1][2][3][4] Over the past few decades, great progress has been made in traditional SiC ceramic materials. However, the inextricable intrinsic brittleness and the low reliability have hindered their broader range of applications.…”

Section: Introductionmentioning

confidence: 99%

“…The demand for high‐performance structural materials and the progression of structural ceramic materials are emphasized in the development of aerospace engineering. SiC ceramics, due to their excellent high‐strength properties, radiation resistance, oxidation resistance, and so forth, have aroused extra attention in military and civil applications 1–4 . Over the past few decades, great progress has been made in traditional SiC ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of multilayer SiC nanofiber paper‐reinforced SiC composites by the NITE method

Chen,

Yang

et al. 2024

J Am Ceram Soc.

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In this work, stacked SiC fibers paper‐reinforced SiC ceramic matrix composites (SiCnf/SiC CMCs) were prepared by nanoimpregnation and transient eutectic (NITE) process using ultra‐long single‐crystal SiC nanofibers. The effect of the SiCnf surface modification via boron nitride (BN) interphase deposition as well as the sintering additive (Al2O3–Y2O3) content on the density, microstructure, and mechanical properties of SiCnf/SiC CMCs has been investigated systematically. The results revealed that the laminated SiCnf/SiC CMCs feature a significant saw‐tooth‐like curve on the load–displacement test, which indicates that the obtained laminated structure with the weak interlayer binding owning to the BN coating treatment possesses significant toughening to the SiC ceramics. Specifically, the SiCnf/SiC CMCs with the sintering additive content of 12 wt% revealed a fracture toughness of over 10 MPa m1/2 after 60 min of BN interface deposition, which is 104.31% higher than that of the composites prepared without BN coating.

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“…[2][3][4] Silicon carbide-based composite materials are known to be hightemperature resistant materials that can work safely above 1200 • C. Therefore, in the aerospace field, it is generally believed that SiC f /SiC ceramic matrix composites (CMC-SiC) can replace the superalloys and refractory metal materials currently used in high-performance engines; in addition, these materials could further improve the thermal efficiency of engines, such as turbine engine components, nozzle jet blades, and other hot end components. 5,6 To meet the requirements of the high thrust-to-weight ratio of the engine, air film holes with a diameter of less than 1 mm are usually processed on these hot-end components to increase cooling and improve heat dissipation performance to ensure the reliable operation of the engine. 7 Due to the ultrahigh hardness of CMC-SiC, traditional machining is prone to tool wear.…”

Section: Introductionmentioning

confidence: 99%

A study of laser machining combined with dynamic chemical etching in micro‐hole drilling of 2.5D SiC_f/SiC composites

Zhao

Sun

Zhang

et al. 2023

Int J Applied Ceramic Tech

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In this study, we used a novel method of laser machining combined with dynamic chemical liquid etching (LMDCE) to drill holes in 2.5D SiCf/SiC ceramic matrix composites (CMC‐SiC). A chemical solution that could quickly remove the recast layer without damaging the substrate was selected. Severe recast layer and microcrack defects were observed when laser machining was performed in the air. The surface of the material was highly carbonized due to the thermal effect of the laser. The effect of different defocus amounts and scanning speeds on the hole taper was studied. A lower scanning speed can ensure that a smaller taper is obtained by the microhole. The bore diameter of the holes processed with a defocusing amount of 0 or −1 mm is more uniform. The results show that with the assistance of a dynamic chemical solution, the fibers break neatly into needle‐like shapes, the thermal effect of the laser on the ceramic substrate is significantly weakened, the microhole shows good roundness, and there are no recast layers and oxides on the sample surface. In addition, microcracks are significantly reduced, and high‐quality microholes without a heat‐affected zone (HAZ) are machined. The method provides a new idea on how to eliminate machining defects and achieve higher‐quality micromachining for ceramic matrix composites.

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Thermal-mechanical behavior of a SiC/SiC CMC subjected to laser heating

Cited by 21 publications

References 22 publications

A Review on Ceramic Matrix Composites and Environmental Barrier Coatings for Aero-Engine: Material Development and Failure Analysis

A Review on Ceramic Matrix Composites and Environmental Barrier Coatings for Aero-Engine: Material Development and Failure Analysis

Microstructure and mechanical properties of multilayer SiC nanofiber paper‐reinforced SiC composites by the NITE method

A study of laser machining combined with dynamic chemical etching in micro‐hole drilling of 2.5D SiC_f/SiC composites

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Thermal-mechanical behavior of a SiC/SiC CMC subjected to laser heating

Cited by 21 publications

References 22 publications

A Review on Ceramic Matrix Composites and Environmental Barrier Coatings for Aero-Engine: Material Development and Failure Analysis

A Review on Ceramic Matrix Composites and Environmental Barrier Coatings for Aero-Engine: Material Development and Failure Analysis

Microstructure and mechanical properties of multilayer SiC nanofiber paper‐reinforced SiC composites by the NITE method

A study of laser machining combined with dynamic chemical etching in micro‐hole drilling of 2.5D SiCf/SiC composites

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A study of laser machining combined with dynamic chemical etching in micro‐hole drilling of 2.5D SiC_f/SiC composites