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Novel Open‐Cellular Glass Foams for Optical Applications
Author(s) -
Ohl Christiane,
Kappa Mathias,
Wilker Viola,
Bhattacharjee Sarama,
Scheffler Franziska,
Scheffler Michael
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04121.x
Subject(s) - borosilicate glass , materials science , transmittance , polymer , thermal decomposition , silicon dioxide , chemical engineering , decomposition , composite material , optoelectronics , chemistry , organic chemistry , engineering
Cellular catalyst supports gain an increasing importance for exhaust gas treatment and environmental catalysis. In combination with photocatalytical active components, a high light transmittance is necessary for high‐efficiency activation. In order to obtain optically suitable glass foams, a novel process was developed based on the use of a preceramic polymer. During thermal decomposition, the polymer provides highly dispersed silicon dioxide (SiO 2 ), which simultaneously reacts with a glass modifier to form a borosilicate glass. Because of a low processing temperature of 1050°C or less, the open‐cellular structure was retained and is therefore suitable for coatings and applications where high permeability and optical transmittance are required.