Method of filling porosity of ceramic component

摘要

A method of fabricating a ceramic component includes initially partially filling pores of a porous structure using one of a first processing technique or a second, different processing technique to form a preform body with residual porosity. The first processing technique produces a first ceramic material in the pores of the porous structure and a second processing technique produces a second ceramic material in the pores of the porous structure. When the first processing technique is used to initially partially fill the pores of the porous structure, the second processing technique is used thereafter to at least partially fill the residual porosity with the second ceramic material. When the second processing technique is used to initially partially fill the pores, the first processing technique is used thereafter to at least partially fill the residual porosity.

主权项

1. A method of fabricating a ceramic component, the method comprising:
initially partially filling pores of a porous structure using one of a first processing technique or a second, different processing technique to form a preform body with residual porosity, the processing techniques differing with respect to the way that ceramic precursors are delivered into a green state and formation mechanisms of final ceramic materials from the ceramic precursors, the first processing technique producing a first ceramic material in the pores and the second processing technique producing a second ceramic material in the pores that is different from the first ceramic material in at least one of composition, microstructure and physical property; when the first processing technique is used to initially partially fill the pores of the porous structure, thereafter performing the second processing technique to at least partially fill the residual porosity with the second ceramic material; and when the second processing technique is used to initially partially fill the pores of the porous structure, thereafter performing the first processing technique to at least partially fill the residual porosity with the first ceramic material.