Process for forming a superconductive fiberform ceramic composite
AssigneeThe Boeing Company
InventorsAnna L. Baker, Michael Strasik
Life of this patent
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Abstract
Processes are provided for forming a superconductive composite, comprising a superconductive metal oxide and a ceramic. The composite may be formed in any desired shape. Liquid nitrogen can be held around the superconductor longer and delivered in a more controlled fashion and the composite has improved resistance to shatter and thermal shock. The ceramic also provides protection from atmospheric deterioration of the superconductive oxide.
Claims18
A process for forming a superconductive composite, said composite comprising a superconductive metal oxide and a ceramic;
- comprising the steps of:
- (a) forming a slurry comprising superconductive metal oxide particles and ceramic fibers in a liquid;
- (b) dispersing said slurry over a form-defining surface and separating a substantial amount of said liquid from said slurry to thereby form a mat of said particles upon said form-defining surface;
- (c) drying said mat;
- (d) contacting said mat with a sol-gel ceramic precursor binder;
- (e) drying and curing said binder and mat at a sufficient temperature and for a period of time sufficient to convert said sol-gel precursor to said ceramic, to thereby form said composite.
A process for forming a superconductive composite, said composite comprising a superconductive metal oxide and a fibrous ceramic composite, comprising the steps of:
- (a) forming a slurry comprising ceramic fibers in a liquid;
- (b) dispersing said slurry over a form-defining surface separating a substantial amount of said liquid from said slurry to thereby form a mat of said fibers upon said form-defining surface;
- (c) drying said mat;
- (d) contacting said mat with a sol-gel ceramic precursor binder;
- (e) drying and curing said binder and mat at a sufficient temperature and for a period of time sufficient to convert said sol-gel precursor to said ceramic, to thereby form a first composite;
- (f) contacting said first composite with a sol-gel superconductive oxide precursor;
- (g) drying said sol-gel and first composite by microwave radiation;
- (h) curing said first composite and precursor at a sufficient temperature and for a period of time sufficient to convert said sol-gel precursor to said superconductive oxide, to thereby form said superconductive composite.
Dependencies are inferred from the claim text.