Study of Wear-Preventive Properties of Macrocyclic Compounds for High Temperature Application

Abstract

An investigation of the possible application of macrocyclic compounds for high temperature lubrication was undertaken. In addition to the commercially available phthalocyanines and the porphyrins, a number of in-house synthesized compounds belonging to the class of Schiff bases were included in the preparation, characterization, and wear testing of the candidate grease formulations with a view to determine their suitability for lubrication at approx. 200 C. Wear tests were conducted in a High Speed Bearing Tester (HSBT). Corrosion tests were also carried out on the steel balls in the bearing assembly. On the basis of the molecular geometry, chemical structure, coordinate (chemical) bonding, electrochemical properties and thermal stability of the macrocyclic ligands, it is felt that this class of compounds would be valuable for application to problems unique to operating aircraft in naval environments.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA239268

Entities

People

  • K. S. Rajan

Organizations

  • IIT Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Body Weight
  • Chemical Compounds
  • Chemical Engineering
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Engineering
  • Friction
  • Imines
  • Lubricants
  • Lubrication
  • Material Degradation Processes
  • Materials Science
  • Military Research
  • Organic Chemistry
  • Organic Compounds

Fields of Study

  • Materials science

Readers

  • Organic Chemistry
  • Systems Analysis and Design
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).