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

Zuoping Wang; Lajun Feng; Wenning Shen

Results in Physics (Mar 2018)

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

Zuoping Wang,
Lajun Feng,
Wenning Shen

Affiliations

Zuoping Wang: School of Materials Science and Engineering, Xi’an University of Technology, No. 5 South Jinhua Road, Xi’an 710048, China; Key Lab. of Corrosion and Protection of Shaanxi Province, No. 5 South Jinhua Road, Xi’an 710048, China; SCIC NO. 12 Research Institute, Xingping 713102, China
Lajun Feng: School of Materials Science and Engineering, Xi’an University of Technology, No. 5 South Jinhua Road, Xi’an 710048, China; Key Lab. of Corrosion and Protection of Shaanxi Province, No. 5 South Jinhua Road, Xi’an 710048, China; Corresponding author at: School of Materials Science and Engineering, Xi’an University of Technology, No. 5 South Jinhua Road, Xi’an 710048, China.
Wenning Shen: School of Materials Science and Engineering, Xi’an University of Technology, No. 5 South Jinhua Road, Xi’an 710048, China; Key Lab. of Corrosion and Protection of Shaanxi Province, No. 5 South Jinhua Road, Xi’an 710048, China

Journal volume & issue: Vol. 8
pp. 41 – 47

Abstract

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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). Keywords: Tantalum, Sputtering, Super-lubrication, Complex GLC coating, Tribological property

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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