Accession Number:

ADA465584

Title:

The Effect of Hard Coated Metals on the Thermo-Oxidative Stability of a Branched Perfluoropolyalklyether Lubricant (Preprint)

Descriptive Note:

Journal article

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Report Date:

2006-10-01

Pagination or Media Count:

39.0

Abstract:

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.

Subject Categories:

  • Physical Chemistry
  • Properties of Metals and Alloys
  • Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE