Corrosion protection of metal-matrix composites. Final report, October 1986-April 1990

Technical Report · Sun Apr 01 04:00:00 EDT 1990

OSTI ID:6617917

Mansfeld, F; Lin, S; Shih, H

Corrosion protection of Al alloys, Al-based metal matrix composites (MMCs), and Al-Li alloy by conversion coatings, anodized layers, polymer coatings, and chemical passivation in CeCl{sub 3} has been evaluated in a simulated marine environment (0.5 N NaCl) by electrochemical impedance spectroscopy (EIS). Conversion coatings, anodizing, polymer coatings have been evaluated for MgAZ31B. Chromate conversion coatings (Alodine 600) provided corrosion protection for Al/SiC and Al/Gr MMCs, but were not as effective as for Al 6061. For Al/SiC it was observed that sulfuric acid anodizing did not produce the corrosion resistance obtained for the Al 6061. The corrosion resistance for hard anodized Al/SiC was less than that for conventional anodized Al/SiC.

• Research Organization: University of Southern California, Los Angeles, CA (USA)
• OSTI ID: 6617917
• Report Number(s): AD-A-222951/6/XAB; CNN: DAAL03-86-K-0156
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
360604 -- Materials-- Corrosion
Erosion
& Degradation
ALKALI METAL COMPOUNDS
ALKALINE EARTH METALS
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON
CARBON COMPOUNDS
CERIUM CHLORIDES
CERIUM COMPOUNDS
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CHROMATES
CHROMIUM COMPOUNDS
COATINGS
COMPOSITE MATERIALS
CORROSION
CORROSION PROTECTION
CORROSION RESISTANCE
DOCUMENT TYPES
ELECTROCHEMISTRY
ELEMENTAL MINERALS
ELEMENTS
ENVIRONMENT
GRAPHITE
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LAYERS
LITHIUM ALLOYS
MAGNESIUM
MATERIALS
METALS
MINERALS
NONMETALS
OXYGEN COMPOUNDS
PASSIVITY
POLYMERS
PROGRESS REPORT
PROTECTIVE COATINGS
RARE EARTH COMPOUNDS
SILICON CARBIDES
SILICON COMPOUNDS
SIMULATION
SODIUM CHLORIDES
SODIUM COMPOUNDS
SPECTROSCOPY
SULFURIC ACID
TRANSITION ELEMENT COMPOUNDS