|About this Abstract
||Materials Science & Technology 2020
||Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
||Laser Ablation & Passivation of Aluminum Alloys
||Robert Lavelle, David Rearick, Melissa Klingenberg, David Snyder, Joshua Fox, Austin Witt, Joshua Robinson
|On-Site Speaker (Planned)
6061-T6 and 5052-H32 aluminum components are treated using a hexavalent chromium (Cr+6) conversion coating to act as a barrier for corrosion and to enhance paint adhesion. This type of coating can cause health risks and requires special treatment, especially regarding disposal of waste products. Media blasting is also used for removing damaged paint and corrosion during the overhaul of components. While media blasting is effective, the process requires the use of consumable media and can cause damage to critical components.
The objective of this study is test, validate, and implement laser ablation and hyper-passivation technology for removal of Cr+6-containing coatings and replacement of aluminum surface treatments. We seek to identify the testing requirements that must be met to obtain approval for coating removal and corrosion barrier applications. This presentation will discuss the testing needs, preliminary results, and equipment being used for testing.