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Ceramic coating

Looking for coating or material which has the following environment (24/7) properties attaching to cold rolled machined steel assembly:

500 deg F
30K psi Compression strength
Dielectric stability at frequencies below 10Khz
If material suggested, would like it to machinable (grind).

Currently using ceramic disk "windows" about .020" thick with a adhesive. Would like to find coating alternative (i.e. ceramic).

Rick Doucette
Signature Control Systems - Denver, Colorado

Considering we don't know what the shape or the size of the object to be coated, it is a bit hard to supply a cure-all answer. However, it would seem a thermal spray coating would probably meet your criteria if the substrate is a relatively flat surface. Alumina or stabilized zirconia would fit your specifications nicely, with perhaps an interlayer of titanium for adhesion. Dale

Dale Woika
Surface Conversion Sciences - Bellefonte, Pennsylvania, US

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