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:
Jul. 19, 2011
Filed:
Jun. 07, 2007
Dieter R. Sporer, Sonthofen, DE;
Ulrike Taeck, Auenstein, CH;
Mitchell R. Dorfman, Westbury, NY (US);
Andrew R. Nicoll, Wohlen, CH;
Massimo Giannozzi, Florence, IT;
Iacopo Giovannetti, Florence, IT;
Dieter R. Sporer, Sonthofen, DE;
Ulrike Taeck, Auenstein, CH;
Mitchell R. Dorfman, Westbury, NY (US);
Andrew R. Nicoll, Wohlen, CH;
Massimo Giannozzi, Florence, IT;
Iacopo Giovannetti, Florence, IT;
Sulzer Metco (US), Inc., Westbury, NY (US);
Abstract
Ceramic abradable materials, in particular thermally sprayable ceramic abradable powder materials, and abradable seals formed by thermally spraying the materials include dysprosia (DyO) and zirconia (ZrO). Coatings are porous whereby the porosity, in part, is induced by plastic or fugitive phases. Abradable seal coatings comprising dysprosia and zirconia exhibit improved thermal shock and sintering resistance and can be worn into tolerance by untreated, bare turbine blades, at least in certain regimes of relative blade speed and coating porosity. Ceramic abradable seal coatings comprising dysprosia and zirconia can be used up to 1200° C.