Low-temperature preparation of Si3N4 whiskers bonded/reinforced SiC porous ceramics via foam-gelcasting combined with catalytic nitridation

Han, Lei; Wang, Junkai; Li, Faliang; Wang, Hui‐Fang; Deng, Xiangong; Zhang, Haijun; Zhang, Shaowei

doi:10.1016/j.jeurceramsoc.2017.10.043

Cited by 77 publications

(27 citation statements)

References 45 publications

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“…Table compares the physical properties of several SiC‐based porous ceramics obtained by different preparation methods . It should be emphasized that the open porosity of the current case was in the same level compared with many other works whereas the compressive strength of SN‐SCs was much higher.…”

Section: Resultsmentioning

confidence: 51%

Three‐dimensional (3D) flexible nanofibrous network knitting on hierarchical porous architecture

et al. 2018

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Hierarchical structured porous ceramics have attracted tremendous research interests because of their numerous excellent properties including robust mechanical strength and large surface area. In this work, silicon carbide (SiC)-based porous ceramics with three levels of pore hierarchy are fabricated from silicon particlestabilized foams and a subsequent one-step calcination after they were embedded with coke. Three-dimensional (3D) flexible nanofibrous network is adhered and wrapped on cell walls of porous ceramics, which is readily fine-tuned and tailored by the temperature to provide optimized pore structure. The resultant SiC-based porous ceramics present a density of 1.03 g/cm 3 at a porosity of 72% with a large quantity of hierarchical micro-and macropores. This hierarchical structure leads to robust compressive strength (23.52 MPa) and large surface area (64.32 m 2 /g). The fabrication method is straightforward and sought-after, providing a facile technical route for advanced hierarchical porous ceramics used in filtration and catalysis fields.flexible nanofibrous network, hierarchical porous architecture, mechanical properties, particle-stabilized foam, porous ceramics

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Section: Resultsmentioning

confidence: 51%

Three‐dimensional (3D) flexible nanofibrous network knitting on hierarchical porous architecture

et al. 2018

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“…Silicon-based ceramics including non-oxide ceramics, such as silicon carbide (SiC) [1][2][3], silicon oxycarbide (SiOC) [4,5], silicon nitride (Si 3 N 4 ) [6][7][8], and their derivatives (SiCN, SiAlON, etc.) [9,10] are being utilized in a wide range of applications owing to their heat resistance, chemical stability, excellent mechanical properties or electric properties, etc.…”

Section: Introductionmentioning

confidence: 99%

Organosilicon polymer-derived ceramics: An overview

Zhu

2019

J Adv Ceram

143

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Polymer-derived ceramics (PDCs) strategy shows a great deal of advantages for the fabrication of advanced ceramics. Organosilicon polymers facilitate the shaping process and different silicon-based ceramics with controllable components can be fabricated by modifying organosilicon polymers or adding fillers. It is worth noting that silicate ceramics can also be fabricated from organosilicon polymers by the introduction of active fillers, which could react with the produced silica during pyrolysis. The organosilicon polymer-derived ceramics show many unique properties, which have attracted many attentions in various fields. This review summarizes the typical organosilicon polymers and the processing of organosilicon polymers to fabricate silicon-based ceramics, especially highlights the three-dimensional (3D) printing technique for shaping the organosilicon polymerderived ceramics, which makes the possibility to fabricate silicon-based ceramics with complex structure. More importantly, the recent studies on fabricating typical non-oxide and silicate ceramics derived from organosilicon polymers and their biomedical applications are highlighted.

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“…Foaming process is no exception. The porosity is often adjusted through changing the solid content of slurry, the type, and amount of foaming agent . The structure of porous ceramics can be changed by changing the initial composition of the slurry.…”

Section: Introductionmentioning

confidence: 99%

Preparation of YSZ porous ceramics with precise porosity control

Tian

Dai

et al. 2019

Int J Applied Ceramic Tech

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Conventional preparation of porous ceramics often hard to accurately control the porosity of the samples. In this paper, by improving the foaming method, the foaming process is placed in the limited space of the ball mill tank, and YSZ porous ceramics with different porosity are obtained by changing the amount of slurry. Initial results showed that the porosity of the sample varies linearly with the increasing of addition of slurry. From the microscopic morphology, it can be seen that the increase in slurry content will reduce the number of pore with little changed size, which lead to the decrease in porosity. Therefore, with simple calculation YSZ porous ceramics with 85%, 80%, 75%, 70%, and 65% porosity can be obtained using the method of foaming in limited space by ball milling. K E Y W O R D Sball milling, foaming, porosity, porous materials How to cite this article: Lang Y, Tian C-J, Dai X, Wang C-A. Preparation of YSZ porous ceramics with precise porosity control. Int J Appl Ceram Technol. 2020;17:974-979. https ://doi.org/10.1111/ijac.13431

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Low-temperature preparation of Si3N4 whiskers bonded/reinforced SiC porous ceramics via foam-gelcasting combined with catalytic nitridation

Cited by 77 publications

References 45 publications

Three‐dimensional (3D) flexible nanofibrous network knitting on hierarchical porous architecture

Three‐dimensional (3D) flexible nanofibrous network knitting on hierarchical porous architecture

Organosilicon polymer-derived ceramics: An overview

Preparation of YSZ porous ceramics with precise porosity control

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