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Strength of Tape Cast and Laminated Ceramics
Author(s) -
HamSu Rosaura,
Wilkinson David S.
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08854.x
Subject(s) - materials science , composite material , weibull modulus , ceramic , tape casting , void (composites) , fabrication , flexural strength , weibull distribution , modulus , medicine , statistics , alternative medicine , mathematics , pathology
Monolithic A1 2 O 3 ceramic laminates were fabricated via a tape casting process. The strength of single tapes was compared with that of laminates, using biaxial flexure tests. The fracture stress was similar. However, the laminates presented a lower Weibull modulus. The feasibility of eliminating or diminishing void‐type flaws present in the green tapes was also assessed. To this end, tapes were first punctured, then laminated and sintered, and the effect of these known flaws in the final ceramic was assessed in four‐point flexure tests. The thermocompression of green tapes during laminate fabrication was found to modify the flaws to a more forgiving morphology.