Stress-Affected Corrosion Kinetics on Airframe Materials
Abstract
Galvanic corrosion in thin film and droplet electrolytes is damaging to aircraft frames and components asevidenced by its frequent association with cracks and other forms of structural degradation. Reaction kinetics,as opposed to considering a purely thermodynamic or potential basis, have been identified as the controllingfactors in these corrosion systems.1 Recent work has demonstrated the importance of experimentally evaluatinggalvanic corrosion reaction kinetics in constrained volume electrolytes.2 However, these reaction rates havegenerally been measured in stress and strain-free environments, in contrast to the exposures seen in flightoperationsThe information gained from this project can feed structural life management tools to better track materialdamage for more efficient maintenance schedules and may ultimately enable predictive damage models. The projectwill address this knowledge gap by: Examining corrosion kinetics, including alloy corrosion rates as well as the reduction reactions thatdrive them, for structural alloys in relevant electrolytes under static and dynamic load profiles Establishing chemical and microstructural mechanisms for stress-induced kinetic changes that
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 15, 2021
- Source ID
- N000142112153
Entities
People
- Brendy Rincon Troconis
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at San Antonio