Metal treatment – Process of modifying or maintaining internal physical... – With measuring – testing – or sensing
Reexamination Certificate
2007-02-13
2007-02-13
Kastler, Scott (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
With measuring, testing, or sensing
C148S508000
Reexamination Certificate
active
10726542
ABSTRACT:
It is disclosed a method of measuring the thickness and/or the depletion of Al and Cr of a γ/γ′ MCrAlY-coating after the use in a high temperature environment, the γ/γ MCrAlY-coating exhibiting a non-equilibrium γ/γ′-microstructure at a temperature lower than the temperature during operation. Before the coating conductivity by means of a multifrequency eddy current system is measured a heat treatment is applied to transform the non-equilibrium γ/γ′-microstructure to a equilibrium microstructure having a α-Cr phase. Subsequently the Al and/or Cr depletion of the coating from the coating conductivity and permeability is determined.
REFERENCES:
patent: 3528861 (1970-09-01), Elam et al.
patent: 3676085 (1972-07-01), Evans et al.
patent: 3754903 (1973-08-01), Goward et al.
patent: 4152223 (1979-05-01), Wallace et al.
patent: 4313760 (1982-02-01), Dardi et al.
patent: 4346137 (1982-08-01), Hecht
patent: 4419416 (1983-12-01), Gupta et al.
patent: RE32121 (1986-04-01), Gupta et al.
patent: 4585481 (1986-04-01), Gupta et al.
patent: 4643782 (1987-02-01), Harris et al.
patent: 4743514 (1988-05-01), Strangman et al.
patent: 4973445 (1990-11-01), Singheiser
patent: 5430376 (1995-07-01), Viertl
patent: 5759301 (1998-06-01), Konter et al.
patent: 5888451 (1999-03-01), Konter et al.
patent: 6201391 (2001-03-01), Burkhardt et al.
patent: 6534975 (2003-03-01), Beeck et al.
patent: 2004/0082069 (2004-04-01), Jiang et al.
patent: 3740478 (1989-01-01), None
patent: 1052505 (2000-11-01), None
“Non-Destructive Condition Assessment of Serviced MCrAIY Coatings”, Giampiero Antonelli, CESI, Milan, Italy, Apr. 2002, pp. 1-12.
“Qualification of a Frequency Scanning Eddy Current Equipment for Nondestructive Characterization of new and Serviced High-Temperature Coatings”, Antonelli, et al., Proceedings of ASME TURBO EXPO 2001, Jun. 4-7, 2001, New Orleans, Louisiana, USA, pp. 1-8.
Antonelli Giampiero
Germerdonk Klaus
Schnell Alexander
Alstom Technology Ltd
Buchanan & Ingersoll & Rooney PC
Kastler Scott
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