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US 2016/0236427 A1Published application
Method of fabricating a ceramic article
AssigneeUnited Technologies Corporation
InventorMichael G. MCCAFFREY
Life of this patent
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Abstract
A disclosed resin transfer molding process includes inserting a ceramic article within a bladder defining a part cavity, inserting the bladder including the ceramic article into a second cavity with a fixed geometry, and pressurizing the bladder against the ceramic article. The method further includes injecting resin into the ceramic article within the bladder with the bladder against the ceramic article to maintain resin within the ceramic article during curing.
Claims15
A resin transfer molding process comprising:
- inserting a ceramic article within a bladder defining a part cavity;
- inserting the bladder into a second cavity with a fixed geometry;
- pressurizing the bladder against the ceramic article;
- and
- injecting resin into the ceramic article within the bladder with the bladder against the ceramic article to maintain resin within the ceramic article during curing.
2 more elements
A method of forming a ceramic article comprising:
- forming a ceramic article of a first porosity from a pre-mold within a first cavity;
- inserting the ceramic article into a bladder defining a part cavity;
- inserting the bladder into a second cavity within a second mold;
- pressurizing the bladder around the ceramic article;
- injecting resin into the ceramic article within the bladder and second cavity;
- curing the ceramic article within the bladder to form pre-ceramic polymer within voids within the ceramic article;
- removing the ceramic article from the second cavity;
- heating the ceramic article to pyrolize the pre-ceramic polymers formed within existing voids of the ceramic article to form a ceramic article of a second porosity;
- and
- re-inserting the ceramic article into the bladder and the second cavity, injecting additional resin, curing to form pre-ceramic polymer within voids of the ceramic part and heating to pyrolize the pre-ceramic polymer to obtain a desired final porosity of the ceramic article.
7 more elements
Dependencies are inferred from the claim text.