CERAMIC ARTICLE AND METHOD THEREFOR USING PARTICLE INFILTRATION AND PRECERAMIC POLYMER INFILTRATION

摘要

A method of fabricating a ceramic article includes providing a porous body that includes a plurality of fiber bundles that has an intra-bundle porosity and an inter-bundle porosity, infiltrating the intra-bundle porosity and the inter-bundle porosity with a mixture of particles in a liquid carrier, the particles having an average size selected with respect to at least the intra-bundle porosity, removing the liquid carrier from the porous body to deposit the particles in the intra-bundle porosity and in the inter-bundle porosity, infiltrating a preceramic polymer into a remaining intra-bundle porosity and a remaining inter-bundle porosity, and thermally converting the preceramic polymer to a ceramic material.

主权项

1. A method of fabricating a ceramic article, the method comprising:
providing a porous body that includes a plurality of fiber bundles that has an intra-bundle porosity and an inter-bundle porosity; infiltrating the intra-bundle porosity and the inter-bundle porosity with a mixture of particles in a liquid carrier, the particles having an average size selected with respect to at least the intra-bundle porosity; removing the liquid carrier from the porous body to deposit the particles in the intra-bundle porosity and in the inter-bundle porosity; infiltrating a preceramic polymer into a remaining intra-bundle porosity and a remaining inter-bundle porosity; and thermally converting the preceramic polymer to a ceramic material.