Highly Porous Oxide Ceramics
2018
Visvaldis Švinka, Ruta Švinka

Investigations of highly porous high temperature ceramic produced by slip casting from concentrated suspensions of raw materials were carried out in the Institute of Silicate Materials since 2004. Pores form due to chemical reaction of metallic aluminium powder with water in basic medium with pH 9.5–10.8. Using this method emission of carbon oxide that usually accompanies fabrication of porous ceramics is avoided. The following investigations in high temperature oxide systems have been carried out since 2007: zirconia containing materials – promotion work by Gerda Bula “Zircon oxide containing high temperature foam ceramic”, 2008; corundum–mullite materials – promotion work by Ludmila Mahnicka- Goremikina “Influence of synthesis conditions and additives on the structure and properties of porous high temperature ceramics”, 2015;alumina materials with various additives – promotion work by Ieva Zake-Tiluga “The effect of mullite-forming additives on the properties of porous alumina ceramics”, 2015; titania containing corundum–mullite materials; cordierite ceramic materials. The goals of these investigations were to obtain of high temperature insulating materials and ceramic filters for filtration of hot and aggressive liquids. Properties of ceramics, such as dependence of thermal conductivity on the temperature and thermal shock durability, were determined.


Keywords
aluminium oxide, zirconium oxide, titanium oxide, kaolin, talcum, cordierite, nanopowders, thermal insulation, thermal shock resistance
DOI
10.7250/msac-2018-0004

Švinka, V., Švinka, R. Highly Porous Oxide Ceramics. Materials Sciences and Applied Chemistry / Materiālzinātne un lietišķā ķīmija , 2018, Vol.35 No. 1, pp.86-111. e-ISSN 2255-8713. Available from: doi:10.7250/msac-2018-0004

Publication language
Latvian (lv)
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