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. 26, 2021
Filed:
Feb. 08, 2019
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Xuan Liu, Glastonbury, CT (US);
Andrew DeBiccari, North Branford, CT (US);
Zhong Ouyang, Glastonbury, CT (US);
Christopher J. Bischof, Southlake, TX (US);
William J. Brindley, Hebron, CT (US);
Assignee:
RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/82 (2006.01); F01D 5/18 (2006.01);
U.S. Cl.
CPC ...
G01N 27/82 (2013.01); F01D 5/187 (2013.01); F05D 2220/32 (2013.01); F05D 2230/40 (2013.01); F05D 2240/301 (2013.01); F05D 2260/83 (2013.01);
Abstract
Disclosed is a method of detecting mixed mode corrosion of a turbine airfoil. The method includes heat treating the turbine airfoil at a temperature of 1600 to 2100° F. in a Ni/Co oxide reducing atmosphere; and scanning the heat treated turbine airfoil with a magnetometer to determine the presence of mixed mode corrosion, wherein the turbine airfoil comprises a nickel superalloy and has internal passages.