Article ID Journal Published Year Pages File Type
1486477 Journal of Non-Crystalline Solids 2006 4 Pages PDF
Abstract

Perhydropolysilazane, a low viscosity preceramic polymer with good infiltration efficiency and high char yield, was used to prepare amorphous composites with polymer-derived silicon nitride matrix reinforced by three-dimensional silica fiber, and the mechanical properties and microstructures were investigated. The composites without fiber coating showed a typical brittle fracture behavior with a smooth fracture surface, and a flexural strength of just 33.5 MPa. While the composites with fiber coating exhibited a non-brittle fracture behavior with distinct fiber pull-out in the fracture surface, and a high flexural strength of 144.9 MPa. It was the controlled fiber/matrix interface by precoating treatment that contributed to the high mechanical property of the composites.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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