Polycarbosilane based UD C/SiC composites: Effect of in-situ grown SiC nano-pins on mechanical properties

Kumar, Suresh; Misra, Manjusri; Mondal, Somnath; Gupta, Rakesh; Mishra, Raghwesh; Ranjan, Ashok; Saxena, A. K.

doi:10.1016/j.ceramint.2015.06.122

Cited by 13 publications

(9 citation statements)

References 43 publications

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“…PIP process is one of the most preferred processes to fabricate the C/SiC composites of complex geometries of low thickness and large size [2,10,11]. It comprises preform fabrication and infiltration of a low viscosity silicon containing polymer-like polycarbosilane into the preform.…”

Section: Pip-based C/sic Composite Fabricationmentioning

confidence: 99%

“…LSI-based C/SiC composites have been developed by various agencies like DLR, NASA, SNECMA, and DRDO for various advanced applications [1][2][3]. PIP-based C/SiC composites are also being developed by several agencies including those who have developed LSI-based C/SiC composites [1][2][3][10][11][12][13]. In this chapter, a summary of the work done at different leading agencies would be presented, whereas the work carried out by the authors in India would be covered in details.…”

Section: Introductionmentioning

confidence: 99%

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SiC-Based Composites Through Liquid Infiltration Routes

Kumar¹,

Ranjan²,

Manocha³

et al. 2019

Handbook of Advanced Ceramics and Composites

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Carbon fiber-reinforced silicon carbide matrix composites (called C/SiC or C/C-SiC) represent a relatively new class of structural materials. These composites have emerged as one of the most promising materials for high-temperature applications in defense and aerospace sectors. They are fabricated via chemical vapor infiltration (CVI), polymer impregnation and pyrolysis (PIP), and liquid silicon infiltration (LSI) processing routes. Several new manufacturing processes have been developed during the last few years such as short fiber reinforcements' based and cheap ceramic precursor polymer based. These composites possess high mass-specific properties, structural and dimensional stability at high temperature, low coefficient of thermal expansion, high thermal conductivity, and reasonable oxidation resistance. These properties have increased the importance of the C/SiC composites and thus make them as most preferred materials for the aerospace, defense, and civil/industrial applications like thrust vectoring control vanes, nozzles, brake disks and pads, clutches, furnace charging devices, etc. This chapter presents the processing and characterization of the C/SiC composite fabricated by liquid infiltration routes, viz., PIP and LSI. Typical properties of the C/SiC composites like mechanical, thermal, and ablative are presented. Few established and potential application of these composites are discussed briefly.

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Section: Pip-based C/sic Composite Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SiC-Based Composites Through Liquid Infiltration Routes

Kumar¹,

Ranjan²,

Manocha³

et al. 2019

Handbook of Advanced Ceramics and Composites

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“…However, Si-O-Si bond peak is also evident at around 1100 cm −1 . Further details of the FTIR of the PCS are available elsewhere [24,25]. TGA was carried out in an inert atmosphere to determine the ceramic yield of PCS at 900 • C. Ceramic yield of HSP-PCS was found to be 85%, while of LSP-PCS, it was 78% (figure 2).…”

Section: Pcs Analysismentioning

confidence: 99%

“…Therefore, the properties at 1400 and 1600 • C are found to be different. Higher pyrolysis temperature and higher heating rates reportedly improve the mechanical properties [25] when the fibres were protected with PyC and SiC nanopins were in situ grown. However, in this study, it was found that the lower temperature yields higher strength compared to higher pyrolysis temperature (figures 6 and 7).…”

Section: 5bmentioning

confidence: 99%

Factorial design, processing, characterization and microstructure analysis of PIP-based C/SiC composites

et al. 2018

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Polymer impregnation and pyrolysis (PIP) process-based C/SiC composites are fabricated using the in-house synthesized methyl-polycarbosilane (PCS). Two-level factorial design matrix is employed to carry out experiments to study the effect of four factors on flexural strength of the composite. Total sixteen sets of composite samples are fabricated. Response table, normal probability plot, ANOVA and regression analysis are carried out to determine the statistical significant factors. Composite density (ρ), fibre volume fraction (V f) and pyrolysis temperature (T) are found to be statistically significant, while softening point (SP) of the PCS and interaction of these four factors are found insignificant. Higher levels of the density and V f have shown positive effect, while the pyrolysis temperature has negative effect on the flexural strength of the composites. Flexural strength was found to be in the range of 374-592 MPa depending on the process parameters. The mechanical behaviour of the composites at different process conditions was explained with the help of their microstructures.

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“…Although similar results have been reported [18], the novelty of this paper is to show the in situ formation of several millimeters long SiC-SiO 2 nanowires with remarkably different growth model compared with previous literature. This way has inherent advantages with an effective and simple procedure, which provides a promising approach to in situ fabrication of ultra-long SiC-SiO 2 nanowires in composites with excellent properties [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of several millimeters long SiC–SiO2 nanowires by a catalyst-free technique

Dong

et al. 2016

Journal of Crystal Growth

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In situ synthesis of ultra-long SiC-SiO 2 nanowires were successfully conducted with the raw materials of silicon and phenolic resin by an effective and catalyst-free technique. Several millimeters long SiC-SiO 2 nanowires with the diameters in the range of 50-200 nm were mainly composed of Si, C and a small amount of O, and the formation of several millimeters long SiC-SiO 2 nanowires was attributed to a low flow rate and carbon sources supplied continuously by the pyrolysis of phenolic resin. A catalyst-free vapor-solid (VS) growth mechanism was proposed to illustrate the growth process of ultra-long SiC-SiO 2 nanowires in present experiment, which provides a promising method for in situ fabrication of SiC-SiO 2 nanowires as reinforcements into composites.

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Polycarbosilane based UD C/SiC composites: Effect of in-situ grown SiC nano-pins on mechanical properties

Cited by 13 publications

References 43 publications

SiC-Based Composites Through Liquid Infiltration Routes

SiC-Based Composites Through Liquid Infiltration Routes

Factorial design, processing, characterization and microstructure analysis of PIP-based C/SiC composites

Synthesis of several millimeters long SiC–SiO2 nanowires by a catalyst-free technique

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