Investigation of corrosion properties and protection for graphite/aluminum, and silicon carbide/aluminum metal matrix composites

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6603917

Aylor, D M; Moran, P J

The corrosion properties of Gr/Al and SiC/Al metal matrix composites (MMCs) and various corrosion protection methods were evaluated in marine environmental exposures of 1 to 42 months. Continuous fiber-reinforced Gr/Al and SiC/Al showed accelerated corrosion when both the Gr or SiC reinforcement and the Al were exposed to the environment, while discontinuous fiber-reinforced SiC/Al MMCs demonstrated localized and less severe corrosion. Aluminum thermal spraying exhibited good corrosion protection for discontinuous fiber-reinforced SiC/Al composites, and sulfuric acid anodizing provided good protection to the continuous fiber-reinforced MMCs. Ion vapor deposited aluminum and organic coatings were also shown to be effective. 9 references.

• OSTI ID: 6603917
• Report Number(s): CONF-860304-
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360604* -- Materials-- Corrosion
Erosion
& Degradation
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON
CARBON COMPOUNDS
CHEMICAL REACTIONS
COATINGS
COMPOSITE MATERIALS
CORROSION
CORROSION PROTECTION
CORROSION RESISTANCE
ELEMENTAL MINERALS
ELEMENTS
GRAPHITE
MATERIALS
MINERALS
NONMETALS
PROTECTIVE COATINGS
SILICON CARBIDES
SILICON COMPOUNDS