Study on the property of low friction complex graphite-like coating containing tantalum

•Graphite-like coating containing Ta was prepared by magnetron sputtering method.•The coatings exhibited lubricating property and wear resistance.•The reason of improved lubricating property was analyzed. In order to enhance equipment lifetime under low oil or even dry conditions, tantalum was intro...

Full description

Saved in:
Bibliographic Details
Published inResults in physics Vol. 8; pp. 41 - 47
Main Authors Wang, Zuoping, Feng, Lajun, Shen, Wenning
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2018
Elsevier
Subjects
Complex GLC coating
Sputtering
Super-lubrication
Tantalum
Tribological property
Tribological property
Complex GLC coating
Tantalum
Sputtering
Super-lubrication
Online AccessGet full text

Cover

More Information
Summary:•Graphite-like coating containing Ta was prepared by magnetron sputtering method.•The coatings exhibited lubricating property and wear resistance.•The reason of improved lubricating property was analyzed. In order to enhance equipment lifetime under low oil or even dry conditions, tantalum was introduced into the graphite-like coating (GLC) by sputtering mosaic targets. The results showed that the introduction of Ta obviously reduced the friction coefficient and hardness of the GLC, while improved the wearability. When the atomic percentage of Ta was larger than 3%, the steady friction coefficient was lower than 0.01, suggesting the coating exhibited super lubricity. When the content of Ta was about 5.0%, the average friction coefficient was 0.02 by a sliding friction test under load of 20 N in unlubricated condition. Its average friction coefficient reduced by 75%, compared with that of control GLC (0.0825).
ISSN:2211-3797
2211-3797
DOI:10.1016/j.rinp.2017.11.028