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Pre‐Treatment of Si 3 N 4 Filler Particles for the Improvement of Si 3 N 4filler /Si–C–N matrix Particulate‐Reinforced Composites
Author(s) -
Lee SeaHoon
Publication year - 2008
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.1551-2916.2008.02362.x
Subject(s) - filler (materials) , materials science , pyrolysis , composite material , particulates , matrix (chemical analysis) , spray pyrolysis , modulus , chemical engineering , nanotechnology , chemistry , thin film , organic chemistry , engineering
The surface of Si 3 N 4 filler particles was modified by heat treatments before the onset of the precursor impregnation and pyrolysis process. The strength, Young's modulus, and hardness of Si 3 N 4filler /Si–C–N matrix particulate‐reinforced composites (PRC) were improved up to 50%, 60%, and 71%, respectively, by the treatment. Si was formed at the surface of the Si 3 N 4 filler particles by the treatment, which induced a strong bonding between the filler and the Si–C–N matrix during pyrolysis by a carbothermal reaction, thus improving the properties of the PRC.