Preventing galvanic corrosion in aluminum
[DOC File]Tribology and Its Effects On Aircraft Structures
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Also, on many components, a coating or treatment is applied, such as aluminum ceramic coatings or tungsten-cobalt-carbide coatings in order to reduce wear, maintain optimum airflow and reduce friction. On aircraft skin, the most widely used material, aluminum alloys, require treatment to prevent corrosion.
SECTION 05521 – ALUMINUM HANDRAIL AND RAILINGS
Control of Corrosion: Prevent galvanic action and other forms of corrosion by insulating metals and other materials from direct contact with incompatible materials. SUBMITTALS. Product Data: For the following: Manufacturer's product lines of mechanically connected railings. Grout, anchoring cement, and paint products.
[DOC File]vayamMNITIANS
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Galvanic corrosion is of major interest to the marine industry and also anywhere water can contact pipes or metal structures. Factors such as relative size of anode (smaller is generally less desirable), types of metal, and operating conditions (temperature, humidity, salinity, etc.) will affect galvanic corrosion.
[DOC File]SECTION 11 17 00 {11030} - Quikserv Inc
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Protection: Where dissimilar metals will contact each other, protect against galvanic action by painting contact surfaces with primer or by applying sealant or tape recommended in writing by manufacturer for this purpose. Where aluminum will contact concrete or masonry, protect against corrosion by painting contact surfaces with bituminous paint.
[DOC File]SECTION 07430 - COMPOSITE PANELS (ALUMINUM FACED)
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Panel Extrusions: Extruded aluminum, ASTM B 221. Concealed Flashings: Formed aluminum sheet, minimum 0.040 inch, ASTM B 209, post-finished black. Stiffeners: formed of extruded aluminum, adhered to interior side of metal wall panel with structural silicone and VHB tape, and designed to tie-in to extrusions.
SECTION 05521 – ALUMINUM HANDRAIL AND RAILINGS
Corrosion Protection: Coat concealed surfaces of aluminum that will be in contact with grout, concrete, masonry, wood, or dissimilar metals, with a heavy coat of bituminous paint. Adjust railings before anchoring to ensure matching alignment at abutting joints.
[DOC File]CORROSION PREVENTION BY ELECTROCHEMICAL METHODS
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Galvanized bolts, automobile steel and mail boxes, zincs placed outboard engines and steel boat hulls, aluminum blocks on oil rigs, etc. Typical coatings which work on this principle are:-zinc on steel, aluminum on steel, cadmium on steel. It should be remembered that cadmium is only slightly below steel in the galvanic series.
[DOC File]May 13, 1999
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9.10.2.1.7 For internal floating roofs with aluminum supports, new austenitic stainless steel spacers or equivalent shall be added to isolate supports from the carbon steel bottom. 9.10.2.2 When removing an existing tank bottom, including the existing shell-to-bottom weld, the tank shell shall be separated from tank bottom either by: a.
[DOC File]PART I - Northeast Lightning Protection
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Aluminum components shall be used in locations where system components are mounted to aluminum, zinc and galvanized surfaces to avoid galvanic corrosion of dissimilar metals. Class I materials shall be used on structures not more than 75 feet in height. Class II materials shall be used on structures over 75 feet in height.
[DOC File]Why Aluminum
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Preventing direct contact between the metals is the key to defeating corrosion. PAGE 2 Below the waterline, an array of sacrificial zinc anodes will prevent galvanic corrosion; their service life is predictable, and replacing them becomes a part of regular maintenance.
[DOC File]SECTION 07430 - COMPOSITE PANELS (ALUMINUM FACED)
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Aluminum-faced panels: Use non-corrosive or stainless-steel fasteners for attachment of the girts and sub-girts. Metal Protection: Where dissimilar metals will contact each other or corrosive substrates, protect against galvanic action as recommended by metal-faced composite panel manufacturer.
[DOC File]Riveted Joints-Part 2 of 2 - RV 7/A
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Any galvanic corrosion protection (such as phosphating steel or zinc chromating aluminum) has a reach of about 1/8" (3 mm) beyond the protected area. With Avex rivets the broken part is only 1/16" at the most, and extensive experience has confirmed that this is not a problem.
SECTION 05521 – ALUMINUM HANDRAIL AND RAILINGS
Control of Corrosion: Prevent galvanic action and other forms of corrosion by insulating metals and other materials from direct contact with incompatible materials. Delegated Design – Design railings, including engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated.
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