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Microstructure and Mechanical Properties of Silicon Nitride Materials Fabricated from SHS Powders
Author(s) -
Pablos Angel,
Bermudo Joaquin,
Osendi Maria Isabel
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.tb00786.x
Subject(s) - microstructure , materials science , sintering , silicon nitride , fracture toughness , hot pressing , pressing , metallurgy , silicon , nitride , composite material , flexural strength , toughness , layer (electronics)
Two different silicon nitride powders, one produced by self‐propagating high‐temperature synthesis (SHS) and one commercial, have been equally processed to obtain dense materials. Y 2 O 3 powders as a sintering aid and hot‐pressing techniques were used to process the materials. The fracture toughness and strength of the materials prepared have been evaluated and the results comparatively discussed as a function of the microstructure, with special emphasis on the characteristics of the initial powders.