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Film blowing of ceria electrolyte plates

Williams, HM; Evans, JRG; Shemilt, JE; Edirisinghe, MJ; (1998) Film blowing of ceria electrolyte plates. MATER MANUF PROCESS , 13 (1) 147 - 158.

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Abstract

A mechanically-ground doped ceria powder with 10 mol% SmO1.5,, was ;incorporated hv high shear mixing into a polystyrene-base organic vehicle. At 45 vol.% solids loading, the suspension could be subjected to elongational flow processes and was prepared in thin film form by tubular film blowing;the manufacturing process used to make thermoplastic polymer film. This provides a potential route for the manufacture of ceramic electrolyte plates for solid oxide fuel cells for which doped ceria is a candidate material. After sintering, film thickness down to 50 mu m could be achieved with relative; densities >95%. The main problem with this route is in retaining flatness of films of less than 100 mu m in thickness during sintering; a problem which exists whatever the particle assembly route.

Type: Article
Title: Film blowing of ceria electrolyte plates
Keywords: OXIDE FUEL-CELLS, POWDERS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/105878
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