Filiform corrosion phenomenon and its prevention method for 5000 series aluminum alloy sheet have been investigated.The painted aluminum alloy sheets were subject significantly to filiform corrosion caused by formation of a mottled and coarse zinc phosphate film during chemical conversion process. On the other hand, galvanized aluminum alloy sheet showed an uniform and fine phosphate film in a brief time and the filiform corrosion resistance was improved markedly.The test results of press-forming and corrosion for the prototype engine hoods made of this newly developed galvanized sheets have revealed a good formability and an excellent filiform corrosion resistance.
Development of Galvanized Aluminum Alloy Sheet for Body Panels with an Excellent Filiform Corrosion Resistance
Sae Technical Papers
International Congress & Exposition ; 1993
1993-03-01
Conference paper
English
Drag , Aluminum alloys , Chemicals , Body panels , Corrosion
Automotive engineering | 1993
|Development of Galvanized Aluminum Alloy Sheet for Body Panels
British Library Conference Proceedings | 1993
|Development of galvanized aluminum alloy sheet for body panels
Tema Archive | 1994
|Filiform corrosion resistance of painted automotive body sheet
Automotive engineering | 1991
|