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| Abstract No.: |
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Scheduled at:
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Friday, June 09, 2017, Hall 12 10:00 AM
Aviation & Power Generation Industry V
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| Title: |
Ten year performance review of HVOF WC/Co in place of hexavalent chrome for USAF landing gear
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| Authors: |
David Webb* / ES3, USA
Richard Van der Straten/ ES3, USA
Ron Montgomery/ 417th SCMS/GUEA , USA
Brad Martin/ 417th SCMS/GUEA , USA
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| Abstract: |
The Under Secretary of Defense mandated all DoD facilities reduce or eliminate Hexavalent Chrome from all processing environments. The USAF Landing Gear Systems Engineering located at Hill AFB Utah is involved in a multiyear contract converting all line of sight EHC plating on High Strength Steel Substrates to High Velocity Oxygen Fuel (HVOF) applied tungsten carbide-cobalt (WC/Co) and/or tungsten carbide-cobalt chrome (WC/Co/Cr) coatings. ES3 has facilitated the required retooling and technical documentation to enable the Air Force to implement the HVOF technology. The Air Force now has over 10 years of data captured for the HVOF process. The results indicate the improved durability of HVOF over Chrome and a typical cost savings has been realized through reduction of overhaul processes. This paper will demonstrate the current status of the HVOF conversion as well as the improved durability and reduced overhaul for landing gear assets that are HVOF coated verses chrome plated.
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