Wear of PEEK composites related to their mechanical performances

Zhang, Z.; Breidt, C.; Chang, Li; Friedrich, K.

doi:10.1016/j.triboint.2003.09.005

Cited by 151 publications

(87 citation statements)

References 10 publications

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“…The molecular structure of PEEK makes it not only own a high fracture toughness, high strength, superior corrosion, and excellent resistance to high temperature hydrolysis, but also possesses excellent biocompatibility and tribology properties [9][10]. Zalaznik et al [13] investigated the influence of different processing temperatures on the properties of pure PEEK.…”

Section: Introductionmentioning

confidence: 99%

Aqueous lubrication and surface microstructures of engineering polymer materials (PEEK and PI) when sliding against Si3N4

et al. 2017

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Polyether-ether-ketone (PEEK) and polyimide (PI) are two kinds of engineering polymer materials widely used as roller bearing cages and rings under extreme environment because of their noise reduction and corrosion resistance properties. The Si 3 N 4 ceramic is the most common ball bearing material. Many current engineering applications of ball bearings require aqueous lubrication. Therefore, this study presents the aqueous lubrication of tribopairs formed by PEEK and PI material sliding against Si 3 N 4 ceramic. Experimental results show that two tribopairs exhibited the similar tribological properties under the dry condition. Water as a lubricant for the PI-Si 3 N 4 tribopair pairs effectively reduces both friction coefficients by 35.5% and wear rates by 32%. The water absorption of PI induces better tribological properties by changing the tribopair surface properties. In addition, the dimples appearing on the PI tribopair surface under water generate additional hydrodynamic lubrication and further improve the friction properties of surface. The PEEK-Si 3 N 4 tribopair shows similar friction coefficients under two kinds of environments. The wear rates under water are approximately more than two times of that under dry sliding. However, water inhibits the appearance of the crush phenomenon and enhances the carrying capacity of the tribopair. Energy dispersive spectroscopy and X-ray diffraction spectra demonstrate no chemical corrosion. The 3D profiler and SEM morphologies illustrate that the transfer film would be formed from the surface of PEEK under water but hindered under dry friction. Overall, the PI-Si 3 N 4 tribopair exhibits better properties than PEEK under water and is promising for future applications in the bearing industry.

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Section: Introductionmentioning

confidence: 99%

Aqueous lubrication and surface microstructures of engineering polymer materials (PEEK and PI) when sliding against Si3N4

et al. 2017

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“…Seizure was not observed at 12 MPa of the contact pressure that is the maximum load of the tribo-tester. It has been reported that 7.5-20 mass% of PTFE is required for improvement in the tribological properties of PEEK under dry conditions [3][4][5][6][7][8] . Much lower concentrations of PTFE are enough to prevent seizure under the lubricated conditions.…”

Section: Resultsmentioning

confidence: 99%

“…It is empirically known that the blending of PTFE in PEEK improves the tribological properties [3][4][5][6][7][8] . In the present work, we focused on the role of PTFE from viewpoint of surface chemistry.…”

Section: Resultsmentioning

confidence: 99%

“…Improvement in mechanical strength of them is achieved by filling carbon fibers 1,2) . Blending of poly(tetrafluoroethlene) (PTFE) in PEEK have been reported to reduce wear rate and friction [3][4][5][6][7][8] under dry conditions. In this work, the load-carrying capacities of PEEK-PTFE composite were evaluated and the mechanism was investigated with an emphasis on the role of PTFE on the tribological properties from a viewpoint of surface chemistry.…”

Section: Introductionmentioning

confidence: 99%

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Surface Chemistry for Improvement in Load-Carrying Capacity of Poly(Ether-Ether-Ketone)-Based Materials by Poly(Tetrafluoroethylene)

et al. 2008

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The tribological properties of poly(ether-ether-ketone) (PEEK) against steel was evaluated by a ring-on-flat type tribo-test under rotating motion. Addition of poly(tetrafluoroethlene) (PTFE) as solid lubricants improved the load-carrying capacity of the material. The role of PTFE was studied by means of time of flight secondary ion mass spectroscopy (TOF-SIMS). The transfer of PTFE from the PEEK surface onto steel surface was found to be beneficial for preventing seizure.

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“…Attempts are being made to reduce the wear of the polymer in these systems by introducing additives which facilitate the formation of a sliding polymer film on the surface of a hard oxide coating. This is achieved through modification of the tribological partners -most often polymers, which are modified by solid lubricant additives (carbon, MoS 2 ) [2] or so-called friction polymers (PTFE) [3] as dispersive components in the form of flakes, particles, or fibres [4]. There are numerous potential methods of modifying anodic hard coatings.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Composite Coatings Obtained on Aluminium Alloys

Bara¹,

Kmita²,

Korzekwa³

2016

Archives of Metallurgy and Materials

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This paper presents methods of modifying the anode surface layers of Al2O3 by introducing carbon to their microstructure. Composite coatings were prepared using two different methods. In the first, coatings were formed by means of oxidation under constant current conditions. Anodic oxidation of aluminium was conducted in a multicomponent electrolyte with the addition of organic acids and graphite. The second method was based on the formation of oxide coatings in an electrolyte without the addition of graphite or heat treatment of the layers of succinic acid. The obtained coatings were tested using SEM, TEM, and GDOES (glow discharge optical emission spectrometry) and their tribological and stereometric properties were measured. The study demonstrated the beneficial effects of the methods when used to improve the tribological properties of sliding couples.

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Wear of PEEK composites related to their mechanical performances

Cited by 151 publications

References 10 publications

Aqueous lubrication and surface microstructures of engineering polymer materials (PEEK and PI) when sliding against Si3N4

Aqueous lubrication and surface microstructures of engineering polymer materials (PEEK and PI) when sliding against Si3N4

Surface Chemistry for Improvement in Load-Carrying Capacity of Poly(Ether-Ether-Ketone)-Based Materials by Poly(Tetrafluoroethylene)

Microstructure and Properties of Composite Coatings Obtained on Aluminium Alloys

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