Effects of complex graphite-like carbon coating on gear vibration noise

Lajun Feng; Zuoping Wang; Wenning Shen

Results in Physics (Mar 2019)

Effects of complex graphite-like carbon coating on gear vibration noise

Lajun Feng,
Zuoping Wang,
Wenning Shen

Affiliations

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.
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
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. 12
pp. 1495 – 1499

Abstract

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In this paper, the effects of substrate surface roughness and the addition of yttrium, cerium and tantalum on thickness uniformity of graphite-like carbon (GLC) coatings on gears were studied by magnetron sputtering method using mosaic targets. And noise reduction effects of gear pump deposited with complex GLC coatings were evaluated at different rotate speeds. The results showed that target-substrate distance, sputtering angle and surface roughness had influences on thickness uniformity of GLC coatings on gear. The introduction of elements Y, Ce and Ta into GLC coatings could effectively improve their thickness uniformity. The complex GLC coating with optimal thickness uniformity on gear exhibited significantly reduction effect for gear noise and the reduction effect for axial vibration was better than that of radial vibrations. Compared with uncoated gears, the noise for the coated gears was decreased by 10 dB at 2000 rpm. Good high-frequency noise reduction was obtained, which could be decreased by 19 dB in the range of 4000–10,000 Hz. Keywords: Thickness uniformity, Vibration characteristic, Gear pump, Magnetron sputtering, Graphite-like carbon coating

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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