Thermomechanical Contact Phenomena and Wear of Sliding Seal Components

Abstract

The objectives of this investigation were to better understand the tribological behavior of ceramic-coated rings sliding against carbon graphite and the thermocracking that occurs with some of the ceramic coatings. Sliding wear tests were conducted on Inconel 625 substrates coated with four different hard materials: chromium oxide, chromium carbide, titanium nitride, and tungsten carbide. Tests were also run to determine the corrosion behavior of the ceramic- coated rings in seawater. Surface profilometry, mass loss measurements, and microscopy were used to characterize wear, cracking and corrosion phenomena. Coupled with the experimental work was a theoretical analysis of temperatures and stresses in the contact region of the ceramic coating during sliding. The influence of various material and geometric parameters on coating cracking was studied in the analytical work. Keywords: Mechanical face seals, Wear, Friction, Ceramic coatings, Thermal stress.

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Document Details

Document Type
Technical Report
Publication Date
Mar 30, 1988
Accession Number
ADA197513

Entities

People

  • Beda M. Espinoza
  • Francis E. Kennedy Jr.
  • Susanne M. Pepper

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Coatings
  • Ceramic Materials
  • Coatings
  • Electron Microscopes
  • Electron Microscopy
  • Engineering
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Friction
  • Heat Treatment
  • Materials
  • Military Research
  • Physical Vapor Deposition
  • Surface Roughness
  • Temperature Gradients
  • Titanium
  • Wear Resistance

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Surface Engineering/Surface Coating Technology.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).