Preparation and formation mechanism of C/C–SiC composites using polymer-Si slurry reactive melt infiltration

Guo, Wenjian; Ye, Yicong; Li, Shun

doi:10.1016/j.ceramint.2019.11.002

Cited by 24 publications

(8 citation statements)

References 29 publications

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“…C/C–SiC composites can be fabricated by reactive melt infiltration (RMI), 14–17 which has the outstanding advantages of short preparation time, simple process, low cost, and flexibility in preparing complex parts with a dense matrix and low porosity. However, in current research, 18–21 the temperature of C/C–SiC composites prepared by RMI normally exceeds 1600 °C, which not only causes corrosion of the carbon fibres, thus affecting the mechanical properties of the samples, but also requires high-temperature resistant equipment.…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si

et al. 2021

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“…Up until now, numerous efforts have been devoted to infiltrating Si or Zr into CFC composites to prepare C/C-SiC or C/C-ZrC composites, respectively [12][13][14][15][16]. However, due to the poor ablation resistance of C/C-SiC, and the weak oxidation resistance of C/C-ZrC, neither of them is suitable to use alone in hypersonic aircrafts.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of C/C–SiC–ZrB2 Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction

et al. 2021

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In this paper, we aimed to improve the oxidation and ablation resistance of carbon fiber-reinforced carbon (CFC) composites at temperatures above 2000 °C. C/C–SiC–ZrB2 ultra-high temperature ceramic composites were fabricated through a complicated liquid–solid reactive process combining slurry infiltration (SI) and reactive melt infiltration (RMI). A liquid Si–Zr10 eutectic alloy was introduced, at 1600 °C, into porous CFC composites containing two kinds of boride particles (B4C and ZrB2, respectively) to form a SiC–ZrB2 matrix. The effects and mechanism of the introduced B4C and ZrB2 particles on the formation reaction and microstructure of the final C/C–SiC–ZrB2 composites were investigated in detail. It was found that the composite obtained from a C/C–B4C preform displayed a porous and loose structure, and the formed SiC–ZrB2 matrix distributed heterogeneously in the composite due to the asynchronous generation of the SiC and ZrB2 ceramics. However, the C/C–SiC–ZrB2 composite, prepared from a C/C–ZrB2 preform, showed a very dense matrix between the fiber bundles, and elongated plate-like ZrB2 ceramics appeared in the matrix, which were derived from the dissolution–diffusion–precipitation mechanism of the ZrB2 clusters. The latter composite exhibited a relatively higher ZrB2 content (9.51%) and bulk density (2.82 g/cm3), along with lower open porosity (3.43%), which endowed this novel composite with good mechanical properties, including pseudo-plastic fracture behavior.

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“…Thirdly, many additives can be added into the matrix, such as ZrC, 5 BN, 4 diamond, 6 carbon black, 16 carbon black mixed with silicon, 17 and graphite 6 . Also, although silicon powders are most commonly used for the infiltration process, silicon mixed with Al powders, 10,18 polymer‐Si slurry, 19 Si‐Zr alloy, 20 Si‐Cu alloy, 21 or Si‐Fe alloy 15 was used to make C/C‐SiC composites. These changes enriched the fabrication process of C/C‐SiC composites, and most of them aimed to increase the mechanical properties of the C/C‐SiC composites or decrease the cost of the fabrication process.…”

Section: Introductionmentioning

confidence: 99%

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

Yang

et al. 2020

Int J Applied Ceramic Tech

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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.

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Preparation and formation mechanism of C/C–SiC composites using polymer-Si slurry reactive melt infiltration

Cited by 24 publications

References 29 publications

Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si

Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si

Fabrication of C/C–SiC–ZrB2 Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction

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

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Preparation and formation mechanism of C/C–SiC composites using polymer-Si slurry reactive melt infiltration

Cited by 24 publications

References 29 publications

Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi2–Si

Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi2–Si

Fabrication of C/C–SiC–ZrB2 Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction

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

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Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si

Effect of heat treatment on the microstructure and ablation performance of C/C–SiC composites containing ZrSi₂–Si