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

Abstract

M-50 and carburized Pyrowear 675(registered) steel coupons deposited with commercially available physical vapor deposited (PVD) TiN, TiCN, TiAlCN, TiCrCN/TiB4C multilayer, electroless Ni (E-Ni) TiN, and E-Ni TiCN coatings were immersed in a branched perfluoropolyalklyether (PFPAE), Krytox AC(registered), 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 675(registered) 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.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2006
Accession Number
ADA465584

Entities

People

  • Andras L. Korenyi-both
  • Carl E. Snyder
  • Jeffrey S. Zabinski
  • Lois J. Gschwender
  • Patrick T. Hellman

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Body Weight
  • Chemical Reactions
  • Corrosion
  • Corrosion Resistance
  • Electron Microscopes
  • Environment
  • Failure Mode And Effect Analysis
  • High Temperature
  • Lubricants
  • Materials
  • Resistance
  • Scanning Electron Microscopes
  • Stainless Steel
  • Turbines
  • Ultrasonic Cleaning

Fields of Study

  • Materials science

Readers

  • Surface Coatings Technology.
  • Thin Film Deposition Science.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).