Surface Analysis of Stainless Steel Outer Race Bearing Specimens

Abstract

The results of analysis of R-4 stainless steel instrument bearings, subjected to various wear cycles, are reported to describe the fate of a synthetic Schiff base lubricant additive at the bearing wear track surfaces. The surfaces were monitored by x-ray, photoelectron spectroscopy (XPS), and Fourier infrared (FTIR) spectroscopy to characterize all lubricant (and grease) species of interest. The data indicate a general modification or degradation of both the lubricant and ubiquitous fluorinated grease ('Kryto-x') additive during the wear stages. Chemical and structural compositions are described for residual derivatives at the bearing track surfaces. Further studies are recommended that will enable Confirmation of both the chemical fate and the molecular mechanism of lubricant additives candidates.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1991
Accession Number
ADA250088

Entities

People

  • David K. Schaffer
  • H. M. Hand

Organizations

  • Martin Marietta

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Aircrafts
  • Corporations
  • Degradation
  • Engineering
  • Identification
  • Lubricant Additives
  • Materials
  • Materials Engineering
  • Materials Science
  • Military Research
  • Photoelectrons
  • Spectroscopy
  • Surface Analysis
  • Vehicles
  • Warfare
  • X Rays

Fields of Study

  • Materials science

Readers

  • Petroleum Engineering
  • Theoretical Analysis.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics