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    Aluminaut — Three Years Later

    Published: Jan 1969

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    The Aluminaut used aluminum alloy 7079 forgings, although this alloy is not particularly corrosion resistant. Corrosion control utilized a combination of protective coating and cathodic protection. The coating used was a four-coat polyurethane system applied over metal that was sandblasted and given a chromate conversion coating. Cathodic protection was obtained from the use of aluminum alloy 606 anodes. The exo-structure is free flooding and made of light gage 5083 alloy. Several areas of this noncritical structure have been bared, without corrosion occurring; indeed, so successful has the anode system been that all additional metal, such as light booms and camera mounts, are being left bare.


    aluminum alloys, submarines, submarine hulls, marine corrosion, plastic coatings, cathodic protection, evaluation

    Author Information:

    Lindberg, RI
    Research scientist, Reynolds Metals Co., Richmond, Va.

    Committee/Subcommittee: G01.11

    DOI: 10.1520/STP32017S

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