Prediction of High Temperature Grease Life Using a Decomposition Kinetic Model

Abstract

A decomposition kinetic model was developed based on thermodynamic theory, first-order reaction law, and PDSC and modified TGA techniques. This kinetic model is able to predict grease degradation life at various temperatures using their activation energy. In addition, the kinetic model was found to have a good correlation with the ASTM D 3527 test method that was simulated using a front wheel bearing system. The advantage of this kinetic model is that it can evaluate the grease thermal-oxidation stability and predict the high temperature grease decomposition life within a short period. It also appears that this kinetic model is potentially useful for grease screening, quality control, and base oil composition effect in thermal-oxidation stability. This paper details how to develop a decomposition kinetic model, its correlation to a bearing test, applications and findings.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 24, 2009
Accession Number
ADA505184

Entities

People

  • In-sik Rhee

Organizations

  • United States Army Tank Automotive Research, Development and Engineering Center

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Arrhenius Equation
  • Chemical Properties
  • Chemical Reactions
  • Decomposition
  • Energy
  • Equations
  • Heat Of Activation
  • High Temperature
  • Oxidation
  • Physical Properties
  • Quality Control
  • Standards
  • Test And Evaluation
  • Test Methods
  • Thermal Stability
  • Thermodynamic Properties

Fields of Study

  • Engineering
  • Materials science

Readers

  • Computational Modeling and Simulation
  • Molecular Photonics/Laser Physics
  • Petroleum Engineering