Corrosion protection of Al alloys and Al-based metal-matrix composites by chemical passivation
Technical Report
·
OSTI ID:6820559
Chemical passivation by immersion of aluminium alloys and aluminium 6061/ silicon carbide and aluminium 6061/graphite metal-matrix composites in cerium chloride solution produces very corrosion-resistant surfaces. Aluminium 6061 and aluminium 7075-T6 that had been immersed in 1000 ppm cerium chloride for one week did not suffer from pitting corrosion during immersion in acerated 0.5 N NaCl for three weeks. For aluminium 7075-T7l3 some improvement of the corrosion resistance was also achieved, but to a much lesser extent. Chemical passivation in cerium chloride was also successful for aluminium/silicon carbide and Allgraphite.
- Research Organization:
- University of Southern California, Los Angeles, CA (USA)
- OSTI ID:
- 6820559
- Report Number(s):
- AD-A-219242/5/XAB
- Resource Relation:
- Other Information: Pub. in Corrosion, Vol. 45, No. 8, 615-631(Aug 1989)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CORROSION PROTECTION
GRAPHITE
SILICON CARBIDES
CERIUM CHLORIDES
CERMETS
COMPOSITE MATERIALS
CORROSION
CORROSION RESISTANCE
PASSIVITY
SODIUM CHLORIDES
SURFACES
ALKALI METAL COMPOUNDS
ALLOYS
CARBIDES
CARBON
CARBON COMPOUNDS
CERIUM COMPOUNDS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTAL MINERALS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
MATERIALS
MINERALS
NONMETALS
RARE EARTH COMPOUNDS
SILICON COMPOUNDS
SODIUM COMPOUNDS
360105* - Metals & Alloys- Corrosion & Erosion
360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion
360604 - Materials- Corrosion
Erosion
& Degradation
ALUMINIUM ALLOYS
CORROSION PROTECTION
GRAPHITE
SILICON CARBIDES
CERIUM CHLORIDES
CERMETS
COMPOSITE MATERIALS
CORROSION
CORROSION RESISTANCE
PASSIVITY
SODIUM CHLORIDES
SURFACES
ALKALI METAL COMPOUNDS
ALLOYS
CARBIDES
CARBON
CARBON COMPOUNDS
CERIUM COMPOUNDS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTAL MINERALS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
MATERIALS
MINERALS
NONMETALS
RARE EARTH COMPOUNDS
SILICON COMPOUNDS
SODIUM COMPOUNDS
360105* - Metals & Alloys- Corrosion & Erosion
360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion
360604 - Materials- Corrosion
Erosion
& Degradation