Background data are presented that support a concept for galvanic and ion exchange release of cathodic (oxygen reduction) corrosion inhibitors from conducting polyaniline (PANI). Such inherently conducting polymers can be potentially formulated into protective coatings for Cu-rich aluminum alloys. The results show that both reduction and ion exchange trigger the release of a species from the conducting polymer that inhibits oxygen reduction on the Cu-rich cathodic phases in the aluminum alloy. These results form the basis for a 'smart' corrosion-resistant coating concept.
Environmentally triggered release of oxygen-reduction inhibitors from inherently conducting polymers
Freigabe von umweltfreundlichen Sauerstoffreduktions-Inhibitoren aus leitenden Polymeren
Corrosion, Houston ; 60 , 11 ; 1024-1030
2004
7 Seiten, 17 Bilder, 16 Quellen
Aufsatz (Zeitschrift)
Englisch
passiver Korrosionsschutz , Luftfahrtindustrie , Aluminiumkupfermagnesiumlegierung , organischer Überzug , Polyanilin , Additiv , Korrosionsinhibitor , Fremdatomzusatz , heterozyklische organische Verbindung , Pyrazol , organische Schwefelverbindung , Korrosionsinhibierung , Sauerstoff , Reduktionsfähigkeit , Salzsprühprüfung