Evaluation of sprayed chromium carbide coatings for gas-cooled reactor applications

Conference · Wed Feb 01 04:00:00 EST 1978

DOI:https://doi.org/10.1016/0040-6090(78)90227-4· OSTI ID:6806236

Lai, G. Y.

Sprayed chromium carbide-nichrome coatings are candidates for protection of faying and sliding surfaces of critical components of gas-cooled reactors from friction and wear damage. These coatings must provide protection throughout the reactor lifetime under high temperature exposure conditions. Extensive evaluation work to characterize these coatings is underway. The work includes studies of friction and wear behavior in helium; stability of the coatings in a low oxygen potential helium environment; impure helium corrosion of coated specimens; and the effect of the coatings on mechanical properties of the substrate alloy. Much of the work reported is on the evaluation of plasma-sprayed coatings. However, a brief discussion of the behavior of coatings applied by the detonation-gun process and high-energy plasma-gun processes is also included.

• Research Organization: Gulf General Atomic Co., San Diego, Calif. (USA)
• DOE Contract Number: EY-76-C-03-0167-065
• OSTI ID: 6806236
• Report Number(s): GA-A-14897; CONF-780430-5
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210300* -- Power Reactors
Nonbreeding
Graphite Moderated
ALLOYS
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM CARBIDES
CHROMIUM COMPOUNDS
COATINGS
DEPOSITION
FRICTION
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HTGR TYPE REACTORS
NICHROME
NICKEL ALLOYS
NICKEL BASE ALLOYS
PERFORMANCE
PLASMA ARC SPRAYING
REACTOR COMPONENTS
REACTORS
SPRAY COATING
SPRAYED COATINGS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
WEAR