A study of the sintering of diatomaceous earth to produce porous ceramic monolithswith bimodal porosity and high strength

Akhtar, FaridStockholms universitet,Avdelningen för materialkemi,Department of Materials and Environmental Chemistry, Stockholm University (författare)

authorCount :3
Upprättat; 2010; 20150416 (farakh)
Diatomite powder, a naturally occurring porous raw material, was used to fabricate ceramic materials withbimodal porosity and high strength. The effect of the sintering temperature on the density and porosity ofdry pressed diatomite green bodies was evaluated using mercury porosimetry and water immersionmeasurements. It was found that the intrinsic porosity of the diatomite particles with a pore size around0.2 μm was lost at sintering temperatures above 1200 °C. Maintaining the sintering temperature at around1000 °C resulted in highly porous materials that also displayed a high compressive strength. Microstructuralstudies by scanning electron microscopy and energy-dispersive X-ray analysis suggested that the porecollapse was facilitated by the presence of low melting impurities like Na2O and K2O.

Rehman, YaserDepartment of Metallurgical and Materials Engineering, University of Engineering and Technology Lahore, Pakistan (författare)
Bergström, LennartStockholms universitet,Avdelningen för materialkemi,Department of Materials and Environmental Chemistry, Stockholm University(Swepub:su)lenbe (författare)
Stockholms universitetAvdelningen för materialkemi (creator_code:org_t)

Ingår i:Powder TechnologyAmsterdam, Netherlands : Elsevier B.V.201, s. 253-2570032-59101873-328X

Av författaren/redakt...: Akhtar, Farid; Rehman, Yaser; Bergström, Lenna ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Annan materialte ...

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