ALODINE?

I was reading in a fairly recent issue of "Sport Aviation" magazine ( I think) and read an article about a kit helicopter that had an in flight failure of a structural part. They traced it back to "acid etching" of the metal to facilitate the corrosion control method being applied.

Does this mean that we should not be using Alodine on structural parts such as the rear wing attachment brackets or rear upper strut fitting for example? I don't remember reading anything in the zenith literature saying not to.

Views: 317

▶ Reply to This

Replies to This Discussion

Permalink Reply by Burke Johnson on April 11, 2009 at 11:54am
I think that the article actually referred to anodizing rather than alodine. They are two very different processes.
Permalink Reply by Thomas Richardson on April 11, 2009 at 8:42pm
I think that the article also differentiated between anodizing and powder coating also two different proceeses or I read the article and then looked up the difference, as I have used quite a bit of powder coating( Struts, jury struts, and these are also considered structural) and was relieved to see that powder coating is safe...
Permalink Reply by Jim LoBue on April 22, 2009 at 11:42pm
The specific process that was used in the helicopter parts was "black" or "hard" anodizing is intended for wear resistance on non-structural parts as it tends to make parts brittle. Regular clear or color tinted anodizing for corrosion protection does not have that problem. Alodine is chromic acid also protects without making parts brittle.

RSS

New from Zenith:

Zenith Planes For Sale 
  

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Zenith Homecoming Tee:

Zenair Floats

Flying On Your Own Wings:
 A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

Aircraft Insurance:

 
 

West Coast USA:

 
Pro Builder Assistance:

 

Transition training:

Lavion Aero

K&S Aviation Services

Aircraft Spruce & Specialty for all your building and pilot supplies!

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

© 2024   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service