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Coatings For Aerospace Gear Applications

I am researching gear coatings to extend the life or increase the power density of geartrain applications, specifically aerospace geartrains. Are there any references or case studies that I might use to help with my search?

Randy Kruse
Gear Engineer - Southern Pines, North Carolina
2004

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I think it's a lot more complicated than coatings. You'll need to look at adequacy of design, selection of materials, heat treat, fits, surface finishes, lubricants, operating speeds and loads, temperatures, break-in conditions, and many other variables. Gear engineering stuff.

Jeffrey Holmes, CEF
Spartanburg, South Carolina
2004

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There was a very good article on this subject in the July-August 2004 issue of Gear Technology (Franz Joachim, et al from ZF, "Influence of Coatings and Surface Improvements on the Lifetime of Gears", pp. 50-56). Another source of good information on this topic is the Mechanical Components Branch of the NASA Glenn Research Center. They have a number of recent publications freely available on their website.

Toby Padfield
Automotive module supplier - Michigan
2004

And, It has to be approved by the OEM before you can apply it to operational parts.

James Watts
- Navarre, Florida
2004

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There was a workshop held on the subject of surface treatment of gears last year put on by the Gear Research Institute and ASM International's Surface Engineering group.

Jim Treglio - scwineryreview.com
PVD Consultant & Wine Lover - San Diego,
California
2004