| About this Abstract |
| Meeting |
Materials Science & Technology 2012
|
| Symposium
|
MS&T'12 Poster Session
|
| Presentation Title |
G6: Corrosion Resistance of E-Coat on Cerium Conversion Coated Mg, Al, and Galvanized Steel Couples |
| Author(s) |
Austin Gerlt, Carlos Castano, Surender Maddela, Matthew J O'Keefe |
| On-Site Speaker (Planned) |
Austin Gerlt |
| Abstract Scope |
Corrosion performance of electro-coat (E-coat) on cerium-based conversion coatings (CeCCs) deposited on to mixed-metal assembly (tri-metallic couples) was investigated by ASTM B117 neutral salt spray testing and electrochemical measurements. This was done to simulate the real world application of CeCCs to a mixed-metal assembly such as automobile and aerospace applications. Tri-metallic couples composed of both AZ31B and AZ91D magnesium alloys coupled with aluminum alloy (6016) and electro-galvanized steel (EGS) were used in this study. Tri-metallic couples were pretreated first with HNO<3> followed by Na<2>SiO<3>.5H<2>O and then immersed in a cerium solution. The coating morphology was characterized by scanning electron microscopy (SEM). The CeCCs influence the coating morphology and corrosion resistance of E-coated tri-metallic couples. |
| Proceedings Inclusion? |
Definite: A CD-only volume |