Premium
Reaction‐Bonded Three‐Layer Alumina‐Based Composites with Improved Damage Resistance
Author(s) -
She Jihong,
Scheppokat Sven,
Janssen Rolf,
Claussen Nils
Publication year - 1998
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.1151-2916.1998.tb02495.x
Subject(s) - materials science , composite material , mullite , indentation , layer (electronics) , ceramic , hot pressing , flexural strength , compressive strength
Three‐layer alumina‐based composites with Al 2 O 3 ‐containing mullite as an outer layer and ZrO 2 ‐containing alumina as an inner layer were fabricated by die‐pressing and reaction‐bonding. The strength of samples with Vickers indents made at loads up to 300 N was investigated. When compared to monolithic ceramics, three‐layer composites exhibit excellent damage resistance due to compressive stresses in the outer layer. Hot isostatically pressed samples show a four‐point bend strength of 800 MPa after indentation at 300 N.