In-situ 3D visualization of composite microstructure during polymer-to-ceramic conversion
One route for producing fiber-reinforced ceramic-matrix composites entails repeated
impregnation and pyrolysis of a preceramic polymer in a fiber preform. The process relies
crucially on the development of networks of contiguous cracks during pyrolysis, thereby
allowing further impregnation to attain nearly-full densification. The present study employs in-
situ x-ray computed tomography (XCT) to reveal in three dimensions the evolution of matrix
structure during pyrolysis of a SiC-based preceramic polymer to 1200° C. Observations are …
impregnation and pyrolysis of a preceramic polymer in a fiber preform. The process relies
crucially on the development of networks of contiguous cracks during pyrolysis, thereby
allowing further impregnation to attain nearly-full densification. The present study employs in-
situ x-ray computed tomography (XCT) to reveal in three dimensions the evolution of matrix
structure during pyrolysis of a SiC-based preceramic polymer to 1200° C. Observations are …
In-situ 3D visualization of composite microstructure during polymer-to-ceramic conversion
F Zok, NM Larson - 2017 - dc.engconfintl.org
One route for producing fiber-reinforced ceramic-matrix composites entails repeated
impregnation and pyrolysis of a preceramic polymer in a fiber preform. The process relies
crucially on the development of networks of contiguous cracks during pyrolysis, thereby
allowing further impregnation to attain nearly-full densification. The present study employs in-
situ x-ray computed tomography (XCT) to reveal in three dimensions the evolution of matrix
structure during pyrolysis of a SiC-based preceramic polymer up to temperatures of 1200 C …
impregnation and pyrolysis of a preceramic polymer in a fiber preform. The process relies
crucially on the development of networks of contiguous cracks during pyrolysis, thereby
allowing further impregnation to attain nearly-full densification. The present study employs in-
situ x-ray computed tomography (XCT) to reveal in three dimensions the evolution of matrix
structure during pyrolysis of a SiC-based preceramic polymer up to temperatures of 1200 C …
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