Non-destructive measurement of corrosion effects on high temperature coatings

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:5855777

Dibelius, G H; Reimann, U ^[1]

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1. Inst. for Steam and Gas Turbines, RWTH, Aachen (DE)

Non-destructive methods for measuring the remaining anticorrosive or antioxidative ability of coatings are investigated. For anticorrosive chromium coatings the increasing ferromagnetism caused by loss of chromium is measured by a permeability probe. Measured values on blades after operation are correlated with the progress of corrosion as determined by metallographic methods. For antioxidative aluminum coatings the diminishing layer thickness is taken as indication for the exhaustion of their protection ability. The layer thickness is measured eddy current probes, especially developed for this application.

• OSTI ID: 5855777
• Report Number(s): CONF-901034-
• Resource Relation: Conference: ASME/IEEE joint power generation conference, Boston, MA (USA), 21-25 Oct 1990; Other Information: Technical Paper 90-JPGC/GT-6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
20 FOSSIL-FUELED POWER PLANTS
ALUMINIUM
CORROSION RESISTANCE
CHROMIUM
TURBINE BLADES
CORROSION PROTECTION
CORROSION RESISTANT ALLOYS
NONDESTRUCTIVE TESTING
PROTECTIVE COATINGS
ALLOYS
COATINGS
ELEMENTS
MATERIALS TESTING
METALS
TESTING
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion
420500 - Engineering- Materials Testing
200104 - Fossil-Fueled Power Plants- Components