Tribological characteristics of micro-ball bearing with V-shaped grooves coated with ultra-thin protective layers

Dae San Oh, Kyeong Hee Kang, Hyun Joon Kim, Jae Kang Kim, Moon Sub Won, Dae Eun Kim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The tribological characteristics of micro-ball bearing comprising Si substrate with V-shaped grooves applied with various types of thin films were investigated. Self-assembled monolayers and metallic thin films were deposited on the Si substrate to enhance the tribological characteristics. Experiments were conducted for 100 and 2000 cycles to estimate initial frictional behavior and durability of micro-ball bearing, respectively. It was demonstrated that both metallic thin films and self-assembled monolayers effectively reduced the friction coefficient and extended the lifetime of the micro-ball bearing. Particularly, self-assembled monolayer exhibited more stable frictional characteristics and longer lifetime compared to metallic thin films.

Original languageEnglish
Pages (from-to)481-490
Number of pages10
JournalTribology International
Volume119
DOIs
Publication statusPublished - 2018 Mar

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) (No. 2010-0018289 ).

Publisher Copyright:
© 2017 Elsevier Ltd

All Science Journal Classification (ASJC) codes

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

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