Russell Kent wrote:

Paul Lamar wrote:

I was looking through the McMaster Carr catalog and came
across this material called  Toughened Zirconia Ceramic.
Five times the fracture toughness of alumina.
254,000 psi compressive strength.
90,000 psi flexural strength.
932 degrees F.

$27 a foot for .375" diameter rod. Enough for three seals.

If we could find somebody to diamond grind this stuff it
would be a major breakthrough in the cost of ceramic
apex seals. Just like our teflon encapsulated silicon O-rings.

If it worked.

Ianette gets $200 each.

How much of that $200 is the labor to shape the ($27) material into the
seal?  :-)

Russell Kent

Don't know Russell. Not at the top of my list.

Paul Lamar

 
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