Effect of Porosity on Thermal Conductivity and Flexural Strength of Ceramic Foam | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 34, 4B, April 2016, Pages 610-620 PDF (831.05 K) | ||
| DOI: 10.30684/etj.34.4B.19 | ||
| Authors | ||
| Shihab Ahmed Zaidan; AbdalKhalaq F. Hamood; Sara Nabil Ibrahim | ||
| Abstract | ||
| Refractory ceramics used for thermal insulating applications should be porous; containing large number of air cells.This work addresses a highly porous local ceramic prepared via simple and low cost process (direct foaming method) by using Iraqi raw material (kaolin) and egg white as a binder and a foaming agent. Porosity, thermal conductivity and flexural strength were obtainedafter sintering of the specimens at 1100 and 1300 oC. The prepared ceramic foam contained a large amount of spherical microspores; it has high porosity (68.1-80%), low thermal conductivity (0.2-0.6) W/m.K with flexural strength range (0.4-2.8) MPa.The direct foaming method, using egg white foam, proved to be an efficient and feasible method for producing highly porous ceramics with good mechanical properties for thermal insulating applications. | ||
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