Title

Optimisation Parameters for the Extrusion of Thin YSZ Tubes for SOFC Electrolytes

Publication Title

Journal of the European Ceramic Society

Publication Date

6-2000

Document Type

Article

DOI

10.1016/S0955-2219(99)00220-4

Keywords

extrusion, ZrO2, fuel cells, tubular electrolyte, microstructure-final

Disciplines

Chemical Engineering

Abstract

Thin wall thickness (0.25–0.35 mm) tubes, as tubular electrolytes of solid oxide fuel cells, were successfully fabricated from yttria stabilised zirconia (YSZ) by way of extrusion. Water-based additives and organic additives were studied. An economic and practical process was developed to achieve smooth, linear, and dense ceramic tubes with 2.7–2.8 mm diameter. The microstructures of the selected tubes were examined. This paper describes the fabrication procedure, formulations and optimisation parameters for successfully extruding thin YSZ tubes.