Invention Grant
- Patent Title: Method of nondestructive turbine airfoil inspection and repair
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Application No.: US16271003Application Date: 2019-02-08
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Publication No.: US11156585B2Publication Date: 2021-10-26
- Inventor: Xuan Liu , Andrew DeBiccari , Zhong Ouyang , Christopher J. Bischof , William J. Brindley
- Applicant: United Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: United Technologies Corporation
- Current Assignee: United Technologies Corporation
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- Main IPC: G01N27/82
- IPC: G01N27/82 ; F01D5/18
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.
Public/Granted literature
- US20200256831A1 METHOD OF NONDESTRUCTIVE TURBINE AIRFOIL INSPECTION AND REPAIR Public/Granted day:2020-08-13
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