Effect of nano-AlN content on the microstructure and mechanical properties of SiC foam prepared by siliconization of carbon foam

Yang, Yu; Guo, Quangui; He, Xuemei; Shi, Jingli; Zhai, Gengtai

doi:10.1016/j.jeurceramsoc.2009.08.006

Cited by 14 publications

(2 citation statements)

References 20 publications

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“…Owing to their unique combination of properties, such as low density, controlled permeability, high thermal shock resistance, high specific strength and chemical stability at high temperatures, porous ceramics are considered as candidate materials for use in a wide range of applications including filters for diesel particulates, molten metals and hot gases, gas burner media, vacuum chucks, preforms for metal-matrix composites, membrane supports for hydrogen separation, lightweight structural materials and porous bioimplants [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Processing of polysiloxane-derived porous ceramics: a review

Kumar

Kim

2010

Science and Technology of Advanced Materials

112

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Because of the unique combination of their attractive properties, porous ceramics are considered as candidate materials for several engineering applications. The production of porous ceramics from polysiloxane precursors offers advantages in terms of simple processing methodology, low processing cost, and easy control over porosity and other properties of the resultant ceramics. Therefore, considerable research has been conducted to produce various Si(O)C-based ceramics from polysiloxane precursors by employing different processing strategies. The complete potential of these materials can only be achieved when properties are tailored for a specific application, whereas the control over these properties is highly dependent on the processing route. This review deals with processing strategies of polysiloxane-derived porous ceramics. The essential features of processing strategies-replica, sacrificial template, direct foaming and reaction techniques-are explained and the available literature reports are thoroughly reviewed with particular regard to the critical issues that affect pore characteristics. A short note on the cross-linking methods of polysiloxanes is also provided. The potential of each processing strategy on porosity and strength of the resultant SiC or SiOC ceramics is outlined.

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Section: Introductionmentioning

confidence: 99%

Processing of polysiloxane-derived porous ceramics: a review

Kumar

Kim

2010

Science and Technology of Advanced Materials

112

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“…Over 900 • C, the oxidation of SiC or Si that produce SiO 2 8 became dominant, as indicated by the weight gain phenomenon in the TG curves. However, the oxidation of residual carbon and the high porosity of the ceramic foam impede the formation of a dense SiO 2 layer, 45 leading to the oxidation deepen into the sample. The results presented in Figure 6A and Table S3 indicate that F65P95, with the highest residual carbon and porosity, experienced the most significant weight loss between 520 and 750 • C and exhibited the most significant weight gain of 14.3% in the temperature range of 750-1500 • C. In the same temperature range, the weight gain of F65P90 and F65P925 was 12.2% and 13.6%, respectively.…”

Section: Oxidation Reactions Of Ceramic Foamsmentioning

confidence: 99%

A synergetic poring strategy to prepare high porosity SiC ceramic foam with good mechanical strength

Jing,

Guo,

Luo

et al. 2023

Int J Applied Ceramic Tech

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Microstructure‐tailored high porosity silicon carbide (SiC) ceramic foams were successfully fabricated using polymeric precursor slurry through a synergetic pore‐forming strategy that combines direct foaming and sacrificial template method together. The slurry is composed of a vinyl‐containing liquid polycarbosilane, poly(methyl methacrylate) (PMMA) microspheres, and composite inorganic fillers. The expandable PMMA served a dual role as both foaming agent and sacrificial template, while the liquid polycarbosilane was used as both binder and preceramic polymer. The green bodies foamed from precursor slurry were pyrolyzed at 1150, 1400, and 1600°C, respectively, to produce corresponding SiC ceramic foams. The pyrolysis behavior of the green body foams and the crystallization behavior of the SiC ceramic foams were studied. Notably, the SiC ceramic foam derived from the slurry containing 65 wt% filler exhibited low density (0.26 g/cm3), high porosity (90.3%), high compressive strength (3.87 MPa), and low thermal conductivity (0.34 W/mK). The SiC ceramic foams displayed attractive oxidation resistance, and the foams with a porosity of 90.3% can retain 75.2% of their initial compressive strength after oxidation for 10 h at 1400°C.

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Nanofillers

Kim¹,

Lee²,

Hwang³

et al. 2011

Wiley Encyclopedia of Composites

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Among various nanofillers for composite systems, this article collectively summarizes several carbon‐based fillers and inorganic fillers, both attracting great attention recently in both the academia and industry for the advent of highly integrated electronic device and energy storage systems. The carbon‐based fillers include carbon nanotube, graphene, and graphene oxide, which are considered to open a new era of functionalized nanocomposite systems in the near future. The inorganic nanofillers include layered silicate, aluminum nitride, and boron nitride, which could substantially change mechanical, electrical, and thermal properties of the composite materials.

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Effect of nano-AlN content on the microstructure and mechanical properties of SiC foam prepared by siliconization of carbon foam

Cited by 14 publications

References 20 publications

Processing of polysiloxane-derived porous ceramics: a review

Processing of polysiloxane-derived porous ceramics: a review

A synergetic poring strategy to prepare high porosity SiC ceramic foam with good mechanical strength

Nanofillers

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