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:
Aug. 25, 2015
Filed:
Feb. 23, 2012
Matthew M. Seabaugh, Columbus, OH (US);
Scott Lawrence Swartz, Columbus, OH (US);
Matthew M. Seabaugh, Columbus, OH (US);
Scott Lawrence Swartz, Columbus, OH (US);
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Abstract
This disclosure relates to a method of densifying a lanthanide chromite ceramic or a mixture containing a lanthanide chromite ceramic. The method comprises mixing one or more lanthanide chromite ceramics with one or more sintering aids, and sintering the mixture. The one or more lanthanide chromite ceramics are represented by the formula (LnAE)CrBO, wherein Ln is a lanthanide element or yttrium, AE is one or more alkaline earth elements, B is one or more transition metals, x is a value less than 1, y is a value less than or equal to 0.5, and z is a value from 0.8 to 1.2. The sintering aids comprise one or more spinel oxides. The one or more spinel oxides are represented by the formula ABOor ABOwherein A and B are cationic materials having an affinity for B-site occupancy in a lanthanide chromite ceramic structure, e.g., ZnMnO, MgMnO, MnMnOand CoMnO. This disclosure also relates in part to products, e.g., dense ceramic structures produced by the above method.