Tuesday, March 18, 2008 - 9:45 AM
Convention Center, Second Level, 220 (Ernest N. Morial Convention Center)

Development of Enhanced Corrosion Testing in an Ozone-Rich Environment

Amber I. Davis, Linda S. Kasten, and Sharon R. Simko, University of Dayton Research Institute; Chad M. Meyer and Joel A. Johnson, AFRL/RXBT

Variations are frequently encountered between accelerated corrosion testing and actual results from the field.  Discrepancies with outdoor testing have specifically been observed in comparison to the corrosion results of bare silver using the ASTM B 117 Standard Practice for Operating Salt Spray (Fog) Apparatus.  An alternative test method and initial apparatus were designed to more accurately simulate the operational environment in which this material and others are being exposed in an attempt to duplicate the corrosion products seen in real situations.  This simplified setup allows the synergistic effect of ozone and ultra-violet radiation to be studied in conjunction with the standard salt spray in an effort to more realistically reproduce the type of beachfront atmosphere that is likely to be encountered by military aircraft.  Improved testing protocols are essential for the development of new materials and to obtain a more accurate comparison of their performance to standard systems that are currently being used.  Development of enhanced tests similar to the one described in this work would allow a more rapid implementation of superior materials and a much greater confidence in their performance.