Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Extreme high temperature, low frictional coefficient coating
2001
I have been searching for a coating that has a very low coefficient of friction to eliminate scratches when a soft metal rubs on the surface. The surface preparation is ground polished and the challenge here is the working temperature which is a constant 450 to
500 deg C. I have tried TiN and CrN but they are not satisfying as they have a coefficient of 0.6 & 0.7. DLC or DLN failed too as they starts to lose weight at 400 deg C.
Would appreciate if anyone can help.
- Singapore
Most of the big coating companies in Europe have developed coatings for dry machining. I would suspect that these coatings would hold up under your conditions. I think there are at least two or three variations, including Ti-containing molybdenum disulfide, Cr-containing DLC, and a WC/C composite.
Jim Treglio - scwineryreview.com
PVD Consultant & Wine Lover
San Diego, California
2001
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