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Amorphous Silicon Carbonitride Fibers Drawn from Alkoxide Modified Ceraset™

2003; Wiley; Volume: 86; Issue: 8 Linguagem: Inglês

10.1111/j.1151-2916.2003.tb03493.x

1551-2916

Atanu Saha, Sandeep R. Shah, Rishi Raj,

Advanced materials and composites

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.