>I have been wondering if aladyneing the surface might help. Annodizing kinda >gives the surface a rough texture from what I have seen and you can't use that >on a head (must be smooth). However aladyning (which is done on aircraft
Anodize or thick anodize (hardcoat) is as smooth as the subsurface, glossy smooth on most of our rocket motor parts. Alodine I use on T4 cases and indeed is merely a chemical conversion coating. I don't know, alodine does not have a great rep for long term corrosion stabilization actually, hence our use of anodize or hardcoat (very hard makes aluminum surface Rockwell C 50+) at work. As for van use, I don't know but I wonder. Some people were using a thermal barrier coat on T4 heads with sucess I believe, a ceramic based thing, HiTemco perhaps. Who knows, wondering if anyone has tried. John vwbus@mindspring.com Gee BTW want to talk about a well worn thread, we've been here before about 1 billion times since the list started, still no answers. |
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