The effect of coating thickness on the tribological properties of polydopamine/PTFE + graphite particle coatings on 60NiTi

The surface coating is one of the novel approaches to enhance the performance and durability of the mechanical components by decreasing the wear and friction among two interacting bodies. In this study, tribological and mechanical properties of titanium nitride (TiN) coatings were investigated on the AISI 52100 bearing steel deposited by low-temperature physical vapor deposition system. Surface morphology and elemental composition of the TiN coating were analyzed by scanning electron microscope and energy-dispersive X-ray spectrum, respectively. Substrate surface roughness and coating thickness of TiN were varied for correlative analysis among adhesion, mechanical, and tribological properties. Scratch and tribo tests were performed for evaluating the adhesion and tribological properties, respectively. Samples having the substrate surface roughness (0.2 ± 0.05 µm) and the coating thickness of more than 2.83 µm presented relatively better adhesion, wear resistance, and lower coefficient of friction of the TiN coating.

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HVOF-sprayed WC–CoCr coatings on Al alloy: Effect of the coating thickness on the tribological properties

Wear ◽

10.1016/j.wear.2008.12.066 ◽

2009 ◽

Vol 267 (5-8) ◽

pp. 944-953 ◽

Cited By ~ 53

Author(s):

G. Bolelli ◽

L. Lusvarghi ◽

M. Barletta

Keyword(s):

Tribological Properties ◽

Coating Thickness ◽

Al Alloy ◽

Alloy Effect

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Tribological properties of metal matrix-graphite particle composites

International Materials Reviews ◽

10.1179/imr.1992.37.1.129 ◽

1992 ◽

Vol 37 (1) ◽

pp. 129-152 ◽

Cited By ~ 205

Author(s):

P. K. Rohatgi ◽

S. Ray ◽

Y. Liu

Keyword(s):

Tribological Properties ◽

Metal Matrix ◽

Graphite Particle ◽

Matrix Graphite

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The effect of micron-graphite particle size on the mechanical and tribological properties of PEEK Composites

High Performance Polymers ◽

10.1177/0954008316685410 ◽

2017 ◽

Vol 30 (2) ◽

pp. 153-160 ◽

Cited By ~ 10

Author(s):

Yingshuang Shang ◽

Yunping Zhao ◽

Yifan Liu ◽

Ye Zhu ◽

Zhenhua Jiang ◽

...

Keyword(s):

Particle Size ◽

Wear Rate ◽

Tribological Properties ◽

Graphite Particle ◽

Layer Structure ◽

Strong Dependence ◽

Frictional Coefficient ◽

Graphite Content ◽

Mechanical And Tribological Properties ◽

Graphite Composites

The poly (ether ether ketone) (PEEK)/graphite composites with good tribological performance were studied. When compared with pure PEEK, the PEEK/graphite composites exhibited a lower frictional coefficient, which was attributed to the layer structure of graphite, which can be easily separated or slide past each other. Considerations were given to both the coefficient of friction and wear rate, and the PEEK/graphite composites showed the optimal tribological behavior when the graphite content was at 25 wt%. This proportion was chosen to investigate the effect of micron-graphite particle size on mechanical and tribological properties of the PEEK/graphite composites. The wear rate of the PEEK composites significantly decreased when the particle size of micron-graphite decreased. Moreover, the results showed that the wear rate had a strong dependence on the mechanical properties of the PEEK composites at the same graphite content level.

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