Hello Paul,

     unfortunately you've sent me only my docs + not the picture of the
     sleeping Alturair guys ;-)

     So, if they wonna sleep all the time, ok, we should forget them ...
     ;-)

     Enclosed there is an old patent by Mazda, related to Al side
     housings with some test results. But today there are a lot of
     different / better solutions for hardening / coating ...

     By the way, AVL (Austria) has suggested "PEO" - shall be very hard +
     resistant ... Again a "Plasma wonder" ... ;-)

     With kindest regards

     Franky / Frank Herfert

   We will try again.

   Paul Lamar.... Merry Christmas



   Hi Franky,

   Here is a firm in the US offering that service. I wonder if it
would work for side plates and the trochoide? Do you have any
experience? Has it been tried?

   www.ihccorp.com <http://www.ihccorp.com <http://www.ihccorp.com/>>

   There is also General Magnaplate in NJ that offer hard anodizing
coating with Teflon impregnation for low friction. For AL the coating is
'Tufram'. Best is 6061 because of lower silicon content. I have no clue
if it would be useful for side plates or the trochoide. The data would
suggest yes.  However, they chickened out when I asked, saying it will
not work.

   http://www.magnaplate.com/

   Rolf Pfeiffer

   Rolf,
   Paul I'm sure you know this, that "hard" anodizing is nowhere near
hard, or tough enough to provide side housing protection.  The Teflon
impregnation helps the aluminum keep from oxidizing, but is NOT tough or
resistant to impact. I have used tons of this stuff in the semiconductor
cleaning equipment I have built in the past. It can be cut easily with
simple high speed steel tools. The Detonation Gun coatings need to be
diamond ground. Also they have a tenacious bond to the base aluminum.
There are sputtering processes now producing a diamond like coating
which might show promise. Otherwise the det gun is "IT". I have spoken
to several people at General Magnaplate. None of them thought they had a
coating that would hold up. On aluminum anyway.
   Bill Jepson


   What I think will work the best is a sheet of hard chrome plated
steel. The question is how
   thick.  ..090" or .125" thick.

It is going to be interesting what Mazda chooses for the RX9

Paul Lamar.... Merry Christmas

Thanks Bill,

and thanks for passing on the response you received from General Magnaplate.
Looks that we can cross that one off. Their advertising is just too rosy.

Steel as base metal is obviously best.

What is the consensus on DLC? (diamond like carbon) would that be any good?

Rolf Pfeiffer

Mazda already uses it on the corner seals of the RX8 engine. It is used on everything in a F1
engine :-)


Paul Lamar Merry Christmas


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