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Amorphous Silicon Carbonitride Fibers Drawn from Alkoxide Modified Ceraset™
Author(s) -
Saha Atanu,
Shah Sandeep R.,
Raj Rishi
Publication year - 2003
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.1151-2916.2003.tb03493.x
Subject(s) - alkoxide , materials science , ceramic , amorphous solid , rheology , silicon , polymer , fiber , composite material , ultimate tensile strength , chemical engineering , organic chemistry , chemistry , metallurgy , catalysis , engineering
We show that the rheology of a silazane‐based precursor for a silicon carbonitride ceramic can be radically altered by reacting it with an alkoxide precursor. This modified precursor can be drawn into fibers by a simple process. The fiber‐friendly rheology of the modified precursor is ascribed to the creation of linear polymer chains by a reaction between silazanes and alkoxides. The ceramic fibers made by this process have excellent mechanical properties, reaching tensile strengths of 2.8 GPa. Their structure is amorphous.