The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 1992
Filed:
Oct. 20, 1988
Frederick F Lange, Santa Barbara, CA (US);
Robert Mehrabian, Santa Ynez, CA (US);
Anthony G Evans, Santa Barbara, CA (US);
Bhaskar V Velamakanni, Goleta, CA (US);
David C Lam, Goleta, CA (US);
Other;
Abstract
The present invention relates to processes to produce ceramic reinforced and ceramic-metal matrix composite articles. More specifically, the invention concerns the use of pressure filtration to infiltrate a reinforcing organic or inorganic network with ceramic particles. Centrifugation is also used to separate the liquid form the slurry. After heating the reinforced ceramic article is produced. Pressure filtration is also used to infiltrate an organic polymer or organic fiber network with ceramic particles. The solvent is removed carefully followed by intermediate heating to remove the organic network without deforming the preform shape. After densification, the preform is heated and contacted with molten metal (optionally) with pressure to infiltrate the open channel network. Upon cooling the ceramic metal matrix composite is obtained. The reinforced matrix articles are useful in high temperature and high stress applications, e.g., combustion chambers, space applications, ceramics for bathroom fixture use, and the like. A significant advantage of this process is its ability to manipulate the architecture as well as the amount of metal reinforcement in the composite as per specifications. Moreover, one can choose different metal-ceramic reinforcements as per the processing needs.