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Surface Treatment of Titanium Without Fatigue Penalty

We are thinking of making some titanium studs from 6Al-4V, and would like to apply some form of surface treatment to prevent galling. These studs are very highly stressed, so ideally the surface treatment shouldn't cause a loss in fatigue strength. What treatments are suitable for this?

Wayne Ward
- Derbyshire, England
2002

First of two simultaneous responses --

Something lubrious and softer than your substrate, I guess. Could it be mechanical plating of cadmium? Worth investigating if possible and affordable. Beware of hydrogen pick up in electroplating procedures.

Guillermo Marrufo
Monterrey, NL, Mexico
2002

Second of two simultaneous responses --

Sound like a titanium anodize process per AMS 2488 Type II. It is compressively stressed and lubrous. In the states only a handful of shops do it.

Jon Quirt
- Fridley, Minnesota
2002

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