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:
Jun. 25, 2019
Filed:
Oct. 07, 2013
Applicant:
Safran Helicopter Engines, Bordes, FR;
Inventors:
Julien Gurt Santanach, Saint Vincent de Tyrosse, FR;
Fabrice Crabos, Assat, FR;
Assignee:
SAFRAN HELICOPTER ENGINES, Bordes, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/28 (2006.01); C23C 4/10 (2016.01); F01D 25/00 (2006.01); F01D 25/08 (2006.01); F01D 9/02 (2006.01); F01D 11/12 (2006.01); C04B 35/486 (2006.01); C04B 35/488 (2006.01); C23C 4/11 (2016.01);
U.S. Cl.
CPC ...
F01D 5/284 (2013.01); C04B 35/486 (2013.01); C04B 35/488 (2013.01); C23C 4/11 (2016.01); F01D 5/288 (2013.01); F01D 9/02 (2013.01); F01D 11/125 (2013.01); F01D 25/005 (2013.01); F01D 25/08 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/386 (2013.01); C04B 2235/767 (2013.01); F05C 2203/0895 (2013.01); F05D 2240/12 (2013.01); F05D 2240/15 (2013.01); F05D 2240/307 (2013.01); F05D 2300/2285 (2013.01); F05D 2300/502 (2013.01); F05D 2300/516 (2013.01); F05D 2300/611 (2013.01); Y02T 50/6765 (2018.05);
Abstract
A rotor-stator assembly for a gas turbine engine, the assembly including a rotor having a layer of ceramic material forming an abrasive coating deposited on its tip, the layer being constituted mainly by zirconia and possessing a void ratio less than or equal to 15%, and a stator arranged around the rotor and provided facing the tip of the rotor with a layer of ceramic material forming an abradable coating, the layer being constituted mainly by zirconia possessing a void ratio lying in the range 20% to 50% with pores having size less than or equal to 50 μm.