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Effect of Phase Composition on the Mechanical Properties of Hot Isostatically Pressed SiAION Ceramics
Author(s) -
Yabuta Kazuya,
Nishio Hiroaki,
Uematsu Keizo
Publication year - 1991
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.1151-2916.1991.tb06948.x
Subject(s) - materials science , flexural strength , sintering , ceramic , hot isostatic pressing , phase (matter) , vickers hardness test , composite material , hot pressing , fracture (geology) , metallurgy , mineralogy , microstructure , chemistry , organic chemistry
Phase compositions were determined in SiAION ceramics, consisting of only Si, Al, O, and N, which were prepared by high‐pressure sintering followed by hot isostatic pressing. The o'‐phase contents were correlated with the high‐temperature fracture strengths and Vickers hardness. The high‐temperature bending strength obtained in this study was over 670 MPa when the o'‐phase content was under 18.0 vol% and decreased with increasing o'‐phase content. The hardness increase was approximately linear with increasing o'‐phase content.