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:
Feb. 18, 2014
Filed:
Jun. 16, 2010
Mohsine Zahid, Ruedesheim Am Rhein, DE;
Mathilde Rieu, Toulouse, FR;
Claude Estournes, Rieumes, FR;
Pascal Lenormand, Toulouse, FR;
Florence Ansart, Labege, FR;
Mohsine Zahid, Ruedesheim Am Rhein, DE;
Mathilde Rieu, Toulouse, FR;
Claude Estournes, Rieumes, FR;
Pascal Lenormand, Toulouse, FR;
Florence Ansart, Labege, FR;
Electricite de France, Paris, FR;
Universite Paul Sabatier Toulouse III, Paris, FR;
Abstract
The present invention relates to a method for manufacturing a metal-oxide-based ceramic, including, in order, the step of inserting, into a flash sintering device, a nanocrystalline powder comprising crystallites and crystallite agglomerates of a ceramic of formula, ZrMO, where M is chosen from yttrium, scandium and cerium, or CeM'O, where M′ is chosen from gadolinium, scandium, samarium and yttrium, where x lies between 0 and 0.2, the powder having an average crystallite size of between 5 and 50 nm, an average crystallite agglomerate size of between 0.5 and 20 μm, and a specific surface area of between 20 and 100 m/g. The invention further includes the step of flash sintering the powder by applying a pressure of between 50 and 150 MPa, at a temperature of between 850° C. and 1400° C., for a time of between 5 and 30 minutes.