Both thermal and mechanical durabilities of porous cordierite ceramic monoliths depend on their strength and deformation behavior over the operational temperature range. In this paper we present the modulus of rupture data for EX-20, 400/6.8 square cell substrates of cordierite composition over the temperature range 70° - 2550°F. These data show a monotonic increase in four-point MOR up to 2200°F where its value approaches twice that at 70°F. The deformation mode is elastic and culminates in brittle fracture up to this temperature. Above 2200°F, however, the strength begins to decrease and the deformation mode becomes ductile; the brittle fracture is not observed. Instead, the surface crack propagates partially and is soon arrested. The failed specimen remains intact and shows permanent curvature. The transition from brittle to ductile behavior and the mechanism responsible for it will be discussed.


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    Titel :

    Strength and Deformation Behavior of Cordierite Substrates from 70° to 2550°F


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1990



    Erscheinungsdatum :

    01.02.1990




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Strength and deformation behavior of cordierite substrates from 70 F to 2550 F

    Gulati,S.T. / Sweet,R.D. / Corning Glass,US | Kraftfahrwesen | 1990


    Nr. 2550

    DataCite | 1894


    Isostatic strength of extruded cordierite ceramic substrates

    Gulati,S.T. / Widjaja,S. / Xu,W. et al. | Kraftfahrwesen | 2004


    Isostatic Strength of Extruded Cordierite Ceramic Substrates

    Gulati, S. T. / Widjaja, S. / Xu, W. et al. | British Library Conference Proceedings | 2004


    Isostatic Strength of Extruded Cordierite Ceramic Substrates

    Treacy, D. R. / Yorio, J. A. / Widjaja, S. et al. | SAE Technical Papers | 2004