Effects of material pair properties on the frictional behavior of metals

Dong Hwan Hwang, In Ha Sung, Dae Eun Kim, Sang Jo Lee

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)


The objective of this work was to investigate the validity of the adhesion theory and the mechanical interaction view point in describing the frictional behavior of metals. Specifically, experimental work was conducted to investigate the relative importance of the material compatibility and hardness ratio on the friction and wear behavior of various metals in dry sliding condition in ordinary laboratory environment. Initial and steady state friction coefficients were measured using both pin-on-disk and pin-on-reciprocating testers for various metal pairs, which were strategically selected based on their compatibility and hardness ratio. The wear characteristics were also observed following the experiments. The experimental results showed that material compatibility had no significant correlation with either initial or steady state friction coefficient. As for the hardness ratio, material pairs with very large differences in initial hardness values resulted in high initial friction coefficient. Overall, it was observed that factors such as sliding motion, whether unidirectional or bi-directional, and wear particle dynamics were found to be more critical on frictional interaction than either material compatibility or initial hardness ratio. Furthermore, among several material properties analyzed, initial friction coefficient had the highest correlation with shear modulus while the steady state friction coefficient had the highest correlation with hardness.

Original languageEnglish
Pages (from-to)600-614
Number of pages15
Issue numberI
Publication statusPublished - 1999 Apr
EventProceedings of the 1999 12th International Conference on Wear of Materials, WOM-99 - Atlanta, GA, United States
Duration: 1999 Apr 251999 Apr 29

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) through CISD (No. 97k3-0907-02-02-1) at Yonsei University.

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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