Decomposition Kinetic of Greases by Thermal Analysis

Abstract

Pressure Differential Scanning Calorimeter (PDSC) is a thermal analytical technique for evaluating oxidation-thermal stability of polymer materials including lubricating greases using the differential heat flow between sample reference thermocouples under various temperatures and pressures. The ASTM D 5483 test method is one of acceptable PDSC techniques to evaluate the grease oxidation stability. In a research effort, a decomposition kinetic model was developed to predict grease high temperature life using ASTM D 5483 PDSC technique. This kinetic model can predict grease oxidation life at the various temperatures and the degree of oxidation using their activation energy. Also, it was found that this kinetic model has a limited correlation to the results from ASTM D 3527 grease life test. This kinetic model can therefore be used to predict the high temperature grease life within certain constraints.

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Document Details

Document Type
Technical Report
Publication Date
Apr 27, 2007
Accession Number
ADA468999

Entities

People

  • In-sik Rhee

Organizations

  • Tank-automotive and Armaments Command

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Arrhenius Equation
  • Bearings
  • Chemical Reaction Properties
  • Chemical Reactions
  • Decomposition
  • Energy
  • Heat Of Activation
  • Heat Transfer
  • Heat Transmission
  • High Temperature
  • Life Tests
  • Oxidation
  • Physical Properties
  • Test Methods
  • Thermal Stability
  • Thermodynamic Properties
  • Thermodynamics

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Petroleum Engineering
  • Rocket Propulsion.