Mirror Constant for Tyranno® Silicon-Titanium-Carbon-Oxygen Fibers Measured in Situ in a Three-Dimensional Woven Silicon Carbide/Silicon Carbide Composite

Synthesis of alumina-mullite-silicon carbide composite (Al2O3-Al6Si2O13-SiCw) was obtained in situ by carbothermal reduction of a mixture of kaolin and two different silica sources. The carbothermal reduction was carried out in a horizontal tube furnace under flow of argon gas. The synthesized products were mixtures of alumina, mullite and silicon carbide in the form of whiskers. The effects of adding two different silica sources of rice husk ash and silica powder to the mixture of kaolin and activated carbon were investigated. XRD and SEM analyses indicate complete reaction of precursors to yield Al2O3-Al6Si2O13-SiC as product powders, with the SiC having whisker morphology.

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Process and mechanical properties of carbon/carbon–silicon carbide composite reinforced with carbon nanotubes grown in situ

Composites Part A Applied Science and Manufacturing ◽

10.1016/j.compositesa.2013.01.014 ◽

2013 ◽

Vol 48 ◽

pp. 73-81 ◽

Cited By ~ 22

Author(s):

Jianbao Hu ◽

Shaoming Dong ◽

Xiangyu Zhang ◽

Haijun Zhou ◽

Bin Wu ◽

...

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Silicon Carbide ◽

Carbide Composite

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In situ Observation of Compression Damage in a Three-Dimensional Braided Carbon Fiber Reinforced Carbon and Silicon Carbide (C/C-SiC) Ceramic Composite

Microscopy and Microanalysis ◽

10.1017/s1431927618000351 ◽

2018 ◽

Vol 24 (3) ◽

pp. 227-237 ◽

Cited By ~ 9

Author(s):

Fan Wan ◽

Shixiang Zhao ◽

Rongjun Liu ◽

Changrui Zhang ◽

Thomas J. Marrow

Keyword(s):

Silicon Carbide ◽

Elastic Modulus ◽

Carbon Fiber ◽

Ceramic Composite ◽

Three Dimensional ◽

Fiber Bundles ◽

Fiber Reinforced ◽

Tensile Strains ◽

Carbon Fiber Reinforced

AbstractDeformation and mechanical damage in a three-dimensional braided carbon fiber reinforced carbon and silicon carbide ceramic composite, subjected to compressive loading, has been studied in situ by laboratory X-ray computed tomography. Dimensional change was measured and damage visualized by digital volume correlation analysis of tomographs. Cracks nucleated from defects within the fiber bundles and tended to propagate along the fiber bundle/matrix interface. For longitudinal compression, parallel to the fiber bundles, the initial elastic modulus decreased with increasing compressive strain while significant transverse tensile strains developed due to distributed cracking. For transverse compression, perpendicular to the fiber bundles, the compressive elastic modulus was effectively constant; the tensile strains developed along the fiber direction were small, whereas macroscopic fracture between the fiber bundles caused very large bulk tensile strain perpendicular to the loading. The observations suggest that the mechanical strength might be improved through control of pre-existing defects and application of stitch fibers in the transverse direction.

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