Fabrication of C/C‐SiC composites using high‐char‐yield resin

Abstract

Carbon fiber reinforced ceramic matrix composites (C/C‐SiC composites) were fabricated using a type of high‐char‐yield phenolic resin with the char yield of 81.17 wt.%. Firstly, the fabric prepreg was prepared by spreading the phenolic resin solution onto the two dimensional carbon fiber plain weave fabric and dried consequently. Afterward, the resin was cured and then the carbon fiber reinforced polymer (CFRP) was pyrolyzed to get amorphous carbon. Finally, C/C‐SiC composites were obtained through liquid silicon infiltration (LSI) process. SEM micrographs showed that the Si/SiC area was homogeneously dispersed in the matrix, and during the siliconization process, a layer of SiC was formed along the surface of carbon fibers or carbon matrix. The fiber volume of CFRP was about 40 vol.%, which was much lower than other studies. XRD result indicated that only β‐SiC type was formed. The result of X‐ray computed tomography clearly showed the structure changes before and after the melt infiltration process. Mechanical property test showed that the composites had fracture strength of 186 ± 23 MPa, and a flexural modulus of 106 ± 8 GPa.

Microstructural tailoring, mechanical and thermal properties of SiC composites fabricated by selective laser sintering and reactive melt infiltration

“…With the rapid development of space technology, large-scale, and lightweight space optical components have become the important components of space-based observation systems, lidar systems, and space astronomical telescopes. Different from traditional optical component materials Journal of Advanced Ceramics https://mc03.manuscriptcentral.com/jacer 3 including glass-ceramic, ultra-low expansion glass, and beryllium (Be), chopped carbon fiber reinforced silicon carbide composite (SiC composites) is gradually becoming the main candidate material for a new generation of space optical components due to its excellent properties such as high specific strength, high reliability, and excellent isotropy [1][2][3].…”

C/C–SiC composites derived from single‐source poly(silylene–acetylene) precursors

“…Polymer‐derived ceramics (PDCs), as a class of materials with remarkable structural properties, have obtained growing interest in the field of materials science in the past 50 years 9–12 . Preceramic polymers (PCPs) are typically regarded as precursors to furnish ceramics with tailorable composition and excellent processability.…”

“…7,8 Polymer-derived ceramics (PDCs), as a class of materials with remarkable structural properties, have obtained growing interest in the field of materials science in the past 50 years. [9][10][11][12] Preceramic polymers (PCPs) are typically regarded as precursors to furnish ceramics with tailorable composition and excellent processability. Various polycarbosilanes (PCSs) with Si atoms linked by methylene (CH 2 ) groups were synthesized and studied as polymeric SiC precursors to prepare C/C-SiC composites by using the PIP process, which was shown to enhance the antioxidation properties of the composites owing to the greater proportion of SiC matrix.…”

In-situ pressureless sintering MgAlON-MgO ceramic from spent MgO-C brick towards friction material and refractory applications

“…The common ceramic-based friction materials mainly include short carbon ber reinforced silicon carbide (Csf/SiC) composite material, carbon ber reinforced carbon-silicon carbide dual matrix (C/C-SiC) composite material and so on [3][4][5]. Yang et al [6] prepared C/C-SiC composite material by twice hot-press curing at 120℃ and 180℃, pyrolysising at 1000℃ and liquid phase silicon ltration (LSI) process preforming at 1450℃. Tang et al [7] have synthesized Csf/SiC composite material at 1800℃ by hotpress sintering under owing argon atmosphere using Si powder as sintering aid.…”