|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Surface Engineering IV
||Atmospheric Plasma Surface Processing of a 7xxx Al Alloy Surface to Improve Corrosion Resistance
||Yong Chae Lim, Jiheon Jun, Donovan N. Leonard, Harry Meyer III, Jong Kahk Keum, Michael Brady, Zhili Feng
|On-Site Speaker (Planned)
||Yong Chae Lim
High strength aluminum (Al) alloys are candidate lightweight materials for applications in transportation sectors. However, general and/or galvanic corrosion of 7xxx series Al alloys remain as technical challenges. In the present work, we applied atmospheric plasma processing to a 7xxx Al alloy surface in attempt to grow a ceramic oxide (such as Al2O3) layer or change local composition of the near surface to improve its corrosion resistance. Electrochemical measurements were conducted on the Al alloys before and after surface processing to demonstrate the improvement of corrosion resistance. Then, analytical electron microscopy and surface chemical analysis were used to elucidate more details of the modified surface.