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Effect of Chemical Composition on the Sinterability of Ultrafine Sic Powders
Author(s) -
Hojo Junichi,
Miyachi Kenji,
Okabe Yasuzo,
Kato Akio
Publication year - 1983
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.1151-2916.1983.tb10603.x
Subject(s) - materials science , impurity , indentation hardness , chemical composition , particle size , vickers hardness test , relative density , carbon fibers , metallurgy , boron , chemical engineering , sintering , microstructure , composite material , chemistry , composite number , organic chemistry , engineering
Ultrafine β‐SiC powders with an average particle size of 0.01 to 0.06 μm were produced by CVD methods. When these powders contained enough carbon to remove impurity oxygen, sintered bodies with a relative density >95% were uchieved at 2050°C in the presence of 1 wt% boron. The Vickers microhardness reached 21 to 25 GPa at a density of ∼95% .