Physical Sciences and Mathematics Commons^™

Magnesium-Based Sacrificial Anode Cathodic Protection Coatings (Mg-Rich Primers) For Aluminum Alloys, Shashi S. Pathak, Sharathmukar K. Mendon, Michael D. Blanton, James W. Rawlins

Faculty Publications

Magnesium is electrochemically the most active metal employed in common structural alloys of iron and aluminum. Mg is widely used as a sacrificial anode to provide cathodic protection of underground and undersea metallic structures, ships, submarines, bridges, decks, aircraft and ground transportation systems. Following the same principle of utilizing Mg characteristics in engineering advantages in a decade-long successful R&D effort, Mg powder is now employed in organic coatings (termed as Mg-rich primers) as a sacrificial anode pigment to protect aerospace grade aluminum alloys against corrosion. Mg-rich primers have performed very well on aluminum alloys when compared against the current chromate …