Study on the sintering mechanism and properties of porous ceramics prepared by silicon carbide abrasive particles with multi-mineral sintering additives and silica sols

Fei, Yanhan; Song, Xujie; Du, Lanjun; Wang, Yanchun; Du, Zhiming

doi:10.1016/j.ceramint.2022.04.326

Cited by 13 publications

(1 citation statement)

References 37 publications

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“…At present, several methods exist for the fabrication of porous ceramics, including sintering [ 15 , 16 , 18 , 19 , 20 , 21 ], sacrificial templating [ 22 , 23 , 24 , 25 ], sol-gel [ 26 , 27 , 28 , 29 ], and polymer precursor conversion (PDC) [ 30 , 31 ] techniques. The sintering technique primarily employs ceramic particles and pore-forming agents as raw materials, producing porous carbide ceramics through high-temperature sintering around 2000 °C, necessitating a sophisticated experimental apparatus and consequently, a high cost.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Property and Thermal Conductivity of Porous TiCO Ceramic Fabricated by In Situ Carbothermal Reduction of Phenolic Resin and Titania

Cao,

Wang,

et al. 2024

Nanomaterials

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The porous TiCO ceramic was synthesized through a one-step sintering method, utilizing phenolic resin, TiO2 powder, and KCl foaming agent as raw materials. Ni(NO3)2·6H2O was incorporated as a catalyst to facilitate the carbothermal reaction between the pyrolytic carbon and TiO2 powder. The influence of Ni(NO3)2·6H2O catalyst content (0, 5, 10 wt.% of the TiO2 powder) on the microstructure, compressive strength, and thermal conductivity of the resultant porous TiCO ceramic was examined. X-ray diffraction and X-ray photoelectron spectroscopy results confirmed the formation of TiC and TiO in all samples, with an increase in the peak of TiC and a decrease in that of TiO as the Ni(NO3)2·6H2O content increased from 0% to 10%. Scanning electron microscopy results demonstrated a morphological change in the pore wall, transforming from a honeycomb-like porous structure composed of well-dispersed carbon and TiC-TiO particles to rod-shaped TiC whiskers, interconnected with each other as the catalyst content increased from 0% to 10%. Mercury intrusion porosimetry results proved a dual modal pore-size distribution of the samples, comprising nano-scale pores and micro-scale pores. The micro-scale pore size of the samples minorly changed, while the nano-scale pore size escalated from 52 nm to 138 nm as the catalyst content increased from 0 to 10%. The morphology of the pore wall and nano-scale pore size primarily influenced the compressive strength and thermal conductivity of the samples by affecting the load-bearing capability and solid heat-transfer conduction path, respectively.

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Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Property and Thermal Conductivity of Porous TiCO Ceramic Fabricated by In Situ Carbothermal Reduction of Phenolic Resin and Titania

Cao,

Wang,

et al. 2024

Nanomaterials

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Preparation, characterization and self-foaming mechanism of total-tailings-based foamed glass-ceramics

Luo

et al. 2023

Ceramics International

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The foaming mechanism and properties of SiO2–Al2O3–CaO-based foamed ceramics with varied foaming agents

et al. 2023

Ceramics International

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Study on the sintering mechanism and properties of porous ceramics prepared by silicon carbide abrasive particles with multi-mineral sintering additives and silica sols

Cited by 13 publications

References 37 publications

Microstructure, Mechanical Property and Thermal Conductivity of Porous TiCO Ceramic Fabricated by In Situ Carbothermal Reduction of Phenolic Resin and Titania

Microstructure, Mechanical Property and Thermal Conductivity of Porous TiCO Ceramic Fabricated by In Situ Carbothermal Reduction of Phenolic Resin and Titania

Preparation, characterization and self-foaming mechanism of total-tailings-based foamed glass-ceramics

The foaming mechanism and properties of SiO2–Al2O3–CaO-based foamed ceramics with varied foaming agents

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