Synthesis and characterization of light-weight porous ceramics used in the transpiration cooling

Zhang, Bo; Huang, Jie; Li, Weijie; Huang, Haiming; Zhao, H. W.; Peng, Jinlong

doi:10.1016/j.actaastro.2020.08.008

Cited by 10 publications

(1 citation statement)

References 47 publications

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“…High-resolution BL13W1 is an X-ray imaging beamline at Shanghai Synchrotron Radiation Facility (SSRF, China) with an optimized 3.5 GeV electron storage ring [30][31][32] . It can devote to various scienti c elds [33][34][35][36][37] , including advanced material and structural characterization due to its unique advantages of high brightness, high purity and high collimation [38][39][40] over traditional laboratory X-ray machine. Figure 3 shows the schematics of in-situ testing system compatible with the BL13W1 of the SSRF.…”

Section: In-situ X-ray Imagingmentioning

confidence: 99%

In-situ X-ray tomography on permeability evolution of C/SiC porous ceramic for hypersonic vehicles

Zhang

Huang

et al. 2021

Ceramics International

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Transpiration cooling system in hypersonic vehicles still remains a challenge due to the limitations of observing permeability and microstructure evolution of porous medium lled with coolant. To tackle this problem, a novel compression-permeation device is designed with high-resolution X-ray tomography system, and then an investigation on permeability evolution mechanism of a C/SiC porous ceramic under pressure is performed using in-situ X-ray imaging and the compression-permeation device. The experimental results indicate that the pore-space uid ow is displayed in terms of three-dimensional streamlines, making the permeability mechanism clear. Meanwhile the porosity along the thickness of ceramic under pressure has been obtained by synchrotron tomography testing, and it is also veri ed that the porosity of C/SiC ceramic fabricated in our research group is basically uniform (>95.4%) along the thickness. Furthermore, we have found the evolution rule for permeability of porous ceramic with water, which depends on the variation of its microstructure under different loads.

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