Nondestructive evaluation of pack-diffusion coatings: A review and preliminary results
Technical Report
·
OSTI ID:5573460
This report reviews potential nondestructive evaluation (NDE) methods for coatings applicable to heat recovery systems of coal gasifiers. The review focuses mainly on aluminized, chromized, or simultaneously aluminized/chromized coatings that are produced by pack-diffusion processes on low-alloy steels such as 2 1/4Cr-1Mo and A106 carbon steels. Nondestructive evaluation is required for characterization of as-received coatings relative to acceptance criteria, and for inspection of field fabrication and repairs. In addition, NDE should play an integral role in the formulation of optimum coating specifications by establishing a relationship between coating parameters and the observed corrosion behaivor in heat-recovery system environments. NDE methods reviewed are thermal-wave imaging, scanning acoustic microscopy, ultrasonic backscattered surface waves, eddy-current testing, and X-ray fluorescence. 31 refs., 15 figs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5573460
- Report Number(s):
- ANL/FE-87-7; ON: DE88005491
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Technical Report
·
Mon Jul 01 00:00:00 EDT 1985
·
OSTI ID:5435853
Corrosion behavior of coated 2 1/4 Cr-1 Mo and carbon steels in a simulated high p/sub S/sub 2// waste heat recovery system environment of a coal gasifier. [Al and/or Cr coatings applied by pack-diffusion process]
Technical Report
·
Fri Feb 28 23:00:00 EST 1986
·
OSTI ID:5932267
Corrosion behavior of chromized and/or aluminized Cr-Mo steels in medium-Btu coal-gasifier environments
Conference
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Thu Mar 31 23:00:00 EST 1988
·
OSTI ID:6600075
Related Subjects
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ACOUSTIC MICROSCOPY
ALLOYS
ALUMINIUM ALLOYS
BACKSCATTERING
CARBON STEELS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMIUM ALLOYS
COATINGS
CORROSION RESISTANCE
CRYSTAL STRUCTURE
DEFECTS
DEPOSITION
DIFFUSION COATING
DOCUMENT TYPES
EDDY CURRENT TESTING
ELECTROMAGNETIC TESTING
HEAT EXCHANGERS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MICROSCOPY
MICROSTRUCTURE
NONDESTRUCTIVE ANALYSIS
NONDESTRUCTIVE TESTING
OXIDES
OXYGEN COMPOUNDS
PROTECTIVE COATINGS
REVIEWS
SCATTERING
STEELS
SURFACE COATING
TESTING
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ACOUSTIC MICROSCOPY
ALLOYS
ALUMINIUM ALLOYS
BACKSCATTERING
CARBON STEELS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMIUM ALLOYS
COATINGS
CORROSION RESISTANCE
CRYSTAL STRUCTURE
DEFECTS
DEPOSITION
DIFFUSION COATING
DOCUMENT TYPES
EDDY CURRENT TESTING
ELECTROMAGNETIC TESTING
HEAT EXCHANGERS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MICROSCOPY
MICROSTRUCTURE
NONDESTRUCTIVE ANALYSIS
NONDESTRUCTIVE TESTING
OXIDES
OXYGEN COMPOUNDS
PROTECTIVE COATINGS
REVIEWS
SCATTERING
STEELS
SURFACE COATING
TESTING
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS