Transcription of ATLAS TECH NOTE No. 7
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ATLAS TECH NOTE No. 7
ATLAS TECH NOTENo. 7revised Aug 2010 galvanic CORROSIONWHAT galvanic corrosion ISGalvanic corrosion is a localised mechanism by which metals can be preferentially corroded. This form ofcorrosion has the potential to attack junctions of metals, or regions where one construction metal contactsanother. Frequently this condition arises because different metals are more easily fabricated into certainforms; an example might be a door frame manufactured from aluminium extrusions (aluminium extrudesextremely well into architectural sections), but with a door handle fabricated from stainless steel tube toexploit its higher strength and abrasion resistance. galvanic corrosion is well known to most designers,specifiers and fabricators, but often the only rule in force is "don't mix metals".WHAT CONDITIONS ARE NEEDEDFor galvanic corrosion to occur there are three conditions which must be met.
ATLAS STEELS www.atlassteels.com.au ATLAS TECH NOTE No. 7 revised Aug 2010 GALVANIC CORROSION WHAT GALVANIC CORROSION IS Galvaniccorrosion is alocalised mechanism bywhich metals can bepreferentiallycorroded.Thisformof
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