The Effect of Hard Coated Metals on the Thermo-Oxidative Stability of a Branched Perfluoropolyalklyether Lubricant (Preprint)
DAYTON UNIV OH RESEARCH INST
Pagination or Media Count:
M-50 and carburized Pyrowear 675registered steel coupons deposited with commercially available physical vapor deposited PVD TiN, TiCN, TiAlCN, TiCrCNTiB4C multilayer, electroless Ni E-Ni TiN, and E-Ni TiCN coatings were immersed in a branched perfluoropolyalklyether PFPAE, Krytox ACregistered, in an oxidative environment at temperatures ranging from 315 to 360 deg C for a duration of 24 hours and compared to uncoated coupons. Coated and uncoated Pyrowear 675registered coupons demonstrated superior corrosion resistance compared to coated and uncoated M-50, respectively. The coatings most resistant to chemical attack in the PFPAE fluid were TiCN, E-Ni TiN, and E-Ni TiCN.
- Physical Chemistry
- Properties of Metals and Alloys
- Lubricants and Hydraulic Fluids