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R ‐Curve Behavior of In Situ Toughened α‐SiAlON Ceramics
Author(s) -
Zenotchkine Misha,
Shuba Roman,
Kim Joo Sun,
Chen IWei
Publication year - 2001
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.1151-2916.2001.tb00760.x
Subject(s) - sialon , ceramic , materials science , composite material , mineralogy , fracture toughness , toughness , phase (matter) , range (aeronautics) , in situ , geology , chemistry , organic chemistry
R ‐curves of single‐phase Y‐ and Ca‐containing α‐SiAlON ceramics have been measured. They range from flat ones for fine‐grain ceramics to pronounced rising ones when large elongated grains are present. The highest toughness measured reached 11.5 MPa·m 1/2 over a crack extension of about 1000 μm.