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Meeting Materials Science & Technology 2020
Symposium Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
Presentation Title Laser Ablation & Passivation of Aluminum Alloys
Author(s) Robert Lavelle, David Rearick, Melissa Klingenberg, David Snyder, Joshua Fox, Austin Witt, Joshua Robinson
On-Site Speaker (Planned) Robert Lavelle
Abstract Scope 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. DISTRIBUTION A DCN 43-6002-19


Deforming Polycrystalline Ceramics by Dislocation Based Plastic Deformation
Engineering Far-from-Equilibrium Materials Using Electromagnetic Fields
Ionic and Mixed Ionic Electronic Conductor Oxides for Microwave Active Catalysis
Laser Ablation & Passivation of Aluminum Alloys
Laser Processing Cokes and Chars
Microwave-assisted Hydrothermal Carbonization of Switchgrass and Low Rank Coals for Solid Fuel Production
Recent Developments In Microwave-metal Discharge Based Machining Process and Associated Challenges
Study of Mechanical Properties of Microwave Processed Biodegradable Metal Composites
The Effect of Microwave Sintering on Additively Manufactured Ceramics
The Use of Alternate Electromagnetic Fields to Control Biofilm

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