Characterization of Porous Alumino-Silicate Bonded SiC-Ceramics Prepared by Hand-Pressing and Extrusion Methods

Hanna, Samir B.; Awaad, M.; Ajiba, N.A.; Saad, E. A.

doi:10.1007/s12633-017-9708-9

Cited by 3 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, conventional methods for fabricating SiC porous ceramics, such as replica [ 19 , 20 ], sacrificial template method [ 21 , 22 ], and the foaming method [ 23 ], are simpler and easier to perform. Among them, the foaming method, which was invented by Sundermann in 1973 [ 24 ], has attracted widespread attention due to its simple and straightforward operation.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of SiC Porous Ceramics by Foaming Method

et al. 2023

View full text Add to dashboard Cite

In this work, hierarchically porous SiC ceramics were prepared via the foaming method. Porous ceramics with tunable, uniform, and bimodal pore structures were successfully fabricated in a facile way. The formation mechanisms of the 1st and 2nd modal macropores are the H2O2 foaming process and SiC particle overlap, respectively. The effect of pore-foaming agent amount, foaming temperature, and surfactant was investigated. According to the results, with increasing H2O2 amount, the porosity, pore size, and interconnectivity of the 1st modal pores increased, whereas bulk density and strength decreased. The porosity increased while the strength decreased as the foaming temperature increased. Surfactants increased pore interconnectivity and porosity. When the foaming temperature was 85 °C, and the addition of H2O2 was 5 wt.%, the porosity, bulk density, flexural strength, and compressive strength were 56.32%, 2.8301 g/cm3, 11.94 MPa, and 24.32 MPa, respectively. Moreover, SiC porous ceramics exhibited excellent corrosion resistance to acids and alkalis.

show abstract