Abstract
This chapter describes the properties and applications of extruded cordierite honeycombs. Future tasks to upgrade performance of extruded cordierite honeycombs are also discussed. Extruded cordierite honeycombs also have applications in other fields because of their unique material and structural properties such as high porosity, low thermal expansion, high geometric surface area, and low gas-flow restriction. Utilizing their porous ceramic wall as filters, extruded honeycombs can be used as trap oxidizers to eliminate toxic particulate matter from diesel engine exhaust. The chapter shows the manufacturing process flow chart for cordierite honeycomb and its material properties. The raw materials for cordierite are kaolin, alumina, and talc, which are pulverized to suitable sizes for extrusion. The structural properties of extruded cordierite honeycombs with typical cell structures are given. The chapter also discusses the coatability, catalytic efficiency at cold start of engines, and thermal shock resistance of cordierite honeycomb substrates. To develop the application of extruded cordierite honeycombs continually, upgrading the structural and material properties is essential.
Published Version
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