Extruded cordierite honeycomb ceramics were developed as substrates for automotive exhaust catalysts. The honeycomb structure is made possible by a unique extrusion die design. The cordierite crystallites in the fired ceramic are preferentially oriented with the result that this structure has a markedly lower-than-average thermal expansion. Orientation results from the orientation of platy raw materials during extrusion. Chemical purity, stoichiometry, and firing rate are also shown to affect thermal expansion.
Thermal expansion of extruded cordierite ceramics
Thermische Ausdehnung extrudierter Kordierit-Keramiken
American Ceramic Society Bulletin ; 60 , 2 ; 202-205
1981
4 Seiten
Article (Journal)
English
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