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:
Oct. 21, 2014
Filed:
Feb. 17, 2012
Juan L. Sepulveda, Tucson, AZ (US);
Raouf O. Loutfy, Tucson, AZ (US);
Sekyung Chang, Tucson, AZ (US);
Ricardo Ramos, Ewing, NJ (US);
Sharly Ibrahim, Tucson, AZ (US);
Juan L. Sepulveda, Tucson, AZ (US);
Raouf O. Loutfy, Tucson, AZ (US);
Sekyung Chang, Tucson, AZ (US);
Ricardo Ramos, Ewing, NJ (US);
Sharly Ibrahim, Tucson, AZ (US);
Materials and Electrochemical Research (MER) Corporation, Tucson, AZ (US);
Abstract
A freeze-forging method for producing sintered three-dimensional ceramic bodies, particularly magnesium aluminate spinel domes. The method comprises forming a ceramic mix of a ready-to-sinter ceramic powder and a nonaqueous liquefied sublimable vehicle having a solidification temperature from room temperature to below 200° C.; reducing the temperature of the ceramic mix to below the vehicle's solidification temperature to freeze the mix; crushing the frozen mix into powdered form; molding the frozen powder into net shape by cold forging in a mold to form a net-shaped green body preform of the desired three-dimensional shape; and densifying the green body into a sintered three-dimensional ceramic body.