Formation mechanisms of tribo-coating for low friction in UHV

Koshi Adachi, Hisakazu Sato, Koji Kato

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Low friction mechanism of tribo-coating from view point of structure of tribo-coating film was studied. Solid lubrication film formed by tribo-coating, which deposits a solid lubricant by evaporation to the contact interface during friction in vacuum, gave low friction coefficient below 0.03 that can not be observed by any other solid lubricants of soft metals. The tribo-coating film formed on the pin had nano-order composite structure, which the crystalline indium of nano size were distributed in an amorphous matrix of silicon oxide and chromium oxide. Because of the nano composite structure, a very thin indium film was formed without break down like conventional pre-coated thin film. The thinner indium film could give smaller value of friction coefficient than that of conventional solid lubricant. This is an abstract of a paper presented at the World Tribology Congress III (Washington, DC 9/12-16/2005).

Original languageEnglish
Title of host publicationProceedings of the World Tribology Congress III - WTC 2005
Publication statusPublished - 2005
Event2005 World Tribology Congress III - Washington, D.C., United States
Duration: 2005 Sep 122005 Sep 16

Publication series

NameProceedings of the World Tribology Congress III - WTC 2005


Other2005 World Tribology Congress III
Country/TerritoryUnited States
CityWashington, D.C.

ASJC Scopus subject areas

  • Energy(all)


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