Construction of continuous heat conductive channel, a double harvest strategy to enhance thermal conductance and bending strength of C/SiC composites

Zhang, Yunhai; Liu, Yongsheng; Cao, Liyang; Zheng, Xu–Guang; Cao, Yejie; Wang, Jing; Zhang, Qing

doi:10.1016/j.jmst.2021.06.063

Cited by 12 publications

(3 citation statements)

References 18 publications

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“…The resulted composites were marked with C pf /SiC‐5, while those without LHTC composites were marked with C pf /SiC. Information about the preparation of high thermal conductive channels can be found in our previous work 17 . The conventional C/SiC composites constructed with PAN carbon fibers (T300) were used as referential samples and marked with Ref‐C/SiC.…”

Section: Methodsmentioning

confidence: 99%

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Optimized ablation resistance behavior and mechanism of C/SiC composites with high thermal conductive channels

et al. 2023

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Aimed to enhance the high‐temperature service performance of C/SiC composites in high‐speed aircraft thermal protection system, in this article, pitch‐based carbon fibers were used to construct high thermal conductive channels to improve the heat transfer capability of C/SiC composites. The results revealed that the as‐prepared composites equipped with 4.7 times higher thermal conductivity than that of conventional C/SiC composites. The oxyacetylene flame ablation test confirmed that the constructed high thermal conductive channels, which quickly conducted the heat flow from the ablation center area to other areas is the main reason of as‐prepared composites exhibiting a very impressive ablation resistance property. Briefly, the ablation temperature of the as‐prepared composite surfaces considerably dropped by about 300°C compared with conventional C/SiC composites, while the linear ablation rate and mass ablation rate of the composites are 1.27 μm/s and 0.61 mg/s respectively, which is superior to many recent reports, demonstrating that this article provides a simple but highly effective measure to improve the ablation resistance property of C/SiC composites.

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Section: Methodsmentioning

confidence: 99%

“…Information about the preparation of high thermal conductive channels can be found in our previous work. 17 The conventional C/SiC composites constructed with PAN carbon fibers (T300) were used as referential samples and marked with Ref-C/SiC.…”

Section: Preparation Of the Compositesmentioning

confidence: 99%

Optimized ablation resistance behavior and mechanism of C/SiC composites with high thermal conductive channels

et al. 2023

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“…Comparing to C/C composites, Carbon/Silicon Carbide (C/SiC) composites have higher compression and shear strength, better heat resistance and chemical inertness, even more excellent hygrothermal stability. [20][21][22][23][24][25] To summarize, it could be conceivable that an innovative C/SiC honeycomb would inherit the advancement from both the honeycomb structure and the C/SiC composite. Regrettably, there is almost no research on fabrication and mechanical behavior of C/SiC honeycomb sandwich structures so far.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and compressive performance of novel lightweight C/SiC honeycomb for ultrahigh stability structures

Zhang

Yang

et al. 2023

Jnl of Sandwich Structures & Materials

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As for high resolution satellite application field, novel C/SiC honeycomb sandwich structure is the first to propose and develop on account of such many attractive properties as excellent ultrahigh dimensional stability in thermal and moisture coupling environment, lightweight and high load-bearing. Three types of C/SiC honeycomb sandwich structures were fabricated for the first time as opto-mechanical structure in satellite. The innovative interlayer-crosslinking method to weave the continuous carbon fiber fabric of honeycomb core was proposed. The compressive properties of novel C/SiC honeycomb sandwich structures were investigated. Meanwhile, the damage mechanism for sandwich structures were analyzed by non-destructive testing. The results showed that the innovative fabrication processing possessed the capability to prepare high quality C/SiC honeycomb, which was shown from the volume and distribution of pores in the X-ray tomography. The compression modulus and strength of the C/SiC honeycomb reached 927 MPa and 10.76 MPa, and showed better rigidity and higher strength compared with classical honeycombs. Two main types of cracks wall were found in the C/SiC honeycomb, i.e., the horizontal ones in the wall with t thickness and the inclined ones in the wall with 2 t thickness. The outstanding compressive performance was attributed to the high mechanical property of ceramic-matrix composite with fiber pull-out mechanism. The exceptional lightweight capacity was inherited from the low bulk density of honeycomb structure ranged from 0.08 g/cm3 to 0.15 g/cm3. This study can help for the development of lightweight materials for opto-mechanical structure in aerospace optical remote sensing technology.

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Thermal‐Mechanical Coupling Performance of Heat‐Resistant, High‐Strength and Printable Al‐Si Alloy Antisymmetric Lattice Structure

Yan,

Dong,

Jia

et al. 2024

Advanced Science

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The unsatisfactory mechanical performance at high temperatures limits the broad application of 3D‐printed aluminum alloy structures in extreme environments. This study investigates the mechanical behavior of 4 different lattice cell structures in high‐temperature environments using AlSi12Fe2.5Ni3Mn4, a newly developed, heat‐resistant, high‐strength, and printable alloy. A novel Antisymmetric anti‐Buckling Lattice Cell (ASLC‐B) based on a unique rotation reflection multistage design is developed. Micro‐CT (Computed Tomography) and SEM (Scanning Electron Microscope) analyses revealed a smooth surface and dense interior with an average porosity of less than 0.454%. Quasi‐static compression tests at 25, 100, and 200 °C showed that ASLC‐B outperformed the other 3 lattice types in load‐bearing capacity, energy absorption, and heat transfer efficiency. Specifically, the ASLC‐B demonstrated a 51.56% and 44.14% increase in compression load‐bearing capacity at 100 and 200 °C compared to ASLC‐B(AlSi10Mg), highlighting its excellent high‐temperature mechanical properties. A numerical model based on the Johnson‐Cook constitutive relationship revealed the damage failure mechanisms, showing ASLC‐B's effectiveness in preventing buckling, enhancing load‐transfer efficiency, and reducing stress concentrations. This study emphasizes the importance of improving energy absorption and mechanical performance for structural optimization in extreme conditions. The ASLC‐B design offers significant advancements in maintaining structural integrity and performance under high temperatures.

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Construction of continuous heat conductive channel, a double harvest strategy to enhance thermal conductance and bending strength of C/SiC composites

Cited by 12 publications

References 18 publications

Optimized ablation resistance behavior and mechanism of C/SiC composites with high thermal conductive channels

Optimized ablation resistance behavior and mechanism of C/SiC composites with high thermal conductive channels

Fabrication and compressive performance of novel lightweight C/SiC honeycomb for ultrahigh stability structures

Thermal‐Mechanical Coupling Performance of Heat‐Resistant, High‐Strength and Printable Al‐Si Alloy Antisymmetric Lattice Structure

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