Effects of Pore Structure on the Sound Absorption Property of Porous Ceramics Fabricated by In-Situ Solidification Technique Using Agar

Abstract

We have fabricated the porous ceramics by gelcasting using agar and different surfactant. The effects of kind of the surfactants on structure of the porous ceramics and sound absorption were investigated. The structure of the porous ceramics including pore size and pore distribution, were easily controlled by changing surfactant. Fabricated porous ceramics performed good sound absorption properties. Moreover, each sample had a high sound absorption between 2000 Hz and 4000 Hz which is most strongly earshot in the audible range of the person.