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A study of the sintering of diatomaceous earth to produce porous ceramic monolithswith bimodal porosity and high strength
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- Akhtar, Farid (author)
- Stockholms universitet,Avdelningen för materialkemi,Department of Materials and Environmental Chemistry, Stockholm University
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- Rehman, Yaser (author)
- Department of Metallurgical and Materials Engineering, University of Engineering and Technology Lahore, Pakistan
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- Bergström, Lennart (author)
- Stockholms universitet,Avdelningen för materialkemi,Department of Materials and Environmental Chemistry, Stockholm University
- (creator_code:org_t)
- Amsterdam, Netherlands : Elsevier B.V. 2010
- 2010
- English.
- In: Powder Technology. - Amsterdam, Netherlands : Elsevier B.V.. - 0032-5910 .- 1873-328X. ; 201, s. 253-257
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Keyword
- Porous ceramics
- diatomite
- sintering
- bimodal porosity
- Inorganic chemistry
- Oorganisk kemi
- Materials Chemistry
- materialkemi
- Engineering Materials
Publication and Content Type
- ref (subject category)
- art (subject category)
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