Tribological properties of polymer/silica composite coatings for microsystems applications

Li Yu Lin, Dae Eun Kim

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


The tribological properties of composite coatings consisting of silica nanoparticles dispersed in either a poly-methylmethacrylate (PMMA) or polystyrene (PS) matrix were assessed. The experiments were conducted using a reciprocating type of micro-tribotester under relatively low normal loads ranging from 5 to 15 mN. Results indicated that the wear resistance of PMMA could be significantly improved by adding silica particles at the cost of increased friction coefficient from 0.27 to 0.4. The effect of silica content on the wear resistance of PS was less apparent. Such outcome was attributed to the difference in the compatibility between silica and the polymer matrix.

Original languageEnglish
Pages (from-to)1926-1931
Number of pages6
JournalTribology International
Issue number12
Publication statusPublished - 2011 Nov

Bibliographical note

Funding Information:
This CRI work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. 2011-0000409 ).

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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