The effects of magnetic field-enhanced thermal spraying on the friction and wear characteristics of poly(ether-ether-ketone) coatings

Tharajak, Jirasak; Palathai, Tippaban; Sombatsompop, Narongrit

doi:10.1016/j.wear.2016.11.021

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…[41][42][43] King and Tabor found that the friction coefficient of thermoplastics such as poly(methyl methacrylate), polyethylene, and polychlorotrifluoroethylene (Kel-F), increased with an increase in temperature. 44 A similar increase in the friction coefficient of PEEK has been reported by Tharajak et al 18 The hBN particles in the polymer matrix (that form a percolating network because of their high concentration) transfer heat away from the contact, lowering the friction coefficient.…”

Section: Friction Coefficientsupporting

confidence: 71%

“…from which it is seen that the work of adhesion increases with an increase in the total surface energy values of the filler and polymer (γ F and γ P , respectively), and with a decrease in the difference between the square roots of the individual components of surface energy [the third and the fourth terms on the right-hand side of Equation (18)]. The total surface energy of PEEK is relatively high, in the range of 48 ± 8 mJ m −2 , and its dispersive and polar components are 43 ± 5 and 5 ± 3 mJ m −2 , respectively (see Supporting Information).…”

Section: Peek-hbn Interfacial Interactionsmentioning

confidence: 99%

“…13 The addition of solid lubricants, such as, polytetrafluoroethylene (PTFE) and hexagonal boron nitride (hBN) in PEEK coatings lowers the friction coefficient of PEEK. [14][15][16][17][18][19] However, weakly adhesive additives, such as, PTFE adversely affect other desirable properties of PEEK, such as, modulus, hardness, and wear resistance. Therefore, tungsten carbide cermet particles were used as the second reinforcing filler in the present study, to not only recover the mechanical properties of PEEK but also to enhance them.…”

Section: Introductionmentioning

confidence: 99%

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Polyetheretherketone, hexagonal boron nitride, and tungsten carbide cobalt chromium composite coatings: Mechanical and tribological properties

Lebga‐Nebane

Sankarasubramanian

Chojecki

et al. 2021

J of Applied Polymer Sci

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Composite powder coatings consisting of polyetheretherketone (PEEK), hexagonal boron nitride (hBN), and tungsten carbide cobalt chromium (WC-CoCr) particles were prepared by mechanical grinding and applied on steel substrates by thermal fusion of the thermoplastic polymer. The coatings contained about 20-60 vol% of hBN and WC-CoCr, and were designed to maximize modulus and hardness and minimize friction coefficient and wear rate. The mechanical and tribological properties of single-and double-layered coatings were characterized using nanoindentation and sliding friction and wear measurements. When the hBN concentration was about 30 vol%, the PEEK-hBN composite modulus was lower than that of neat PEEK, which is attributed to the disruption of PEEK crystallization by the filler particles. Upon the inclusion of WC-CoCr particles, the composite's modulus, and hardness showed a substantial increase beyond PEEK values. Elastic moduli of the mixed-filler systems were closer to the Reuss bound than the Voigt bound and could be correlated well with the coating composition using volume-fraction-weighted powers of component properties. Fitted values of the exponent (called the microstructural coefficient) were consistent with the expected continuity and connectivity of the composite's hard and soft phases. Viscoplastic energy dissipation increased with an increase in the polymer-filler interfacial area but decreased with the soft-phase volume fraction. The plasticity index was found to increase logarithmically with the coating modulus. The specific wear rate increased sharply beyond a composition-dependent critical value of the plasticity index. Mechanical polishing of the coating surfaces using abrasive slurries lowered the friction coefficient but increased the wear rate.

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Section: Friction Coefficientsupporting

confidence: 71%

Section: Peek-hbn Interfacial Interactionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polyetheretherketone, hexagonal boron nitride, and tungsten carbide cobalt chromium composite coatings: Mechanical and tribological properties

Lebga‐Nebane

Sankarasubramanian

Chojecki

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

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“…The final research objectives are to analyze the mechanisms of the anti-friction and anti-wear mechanisms of the components through the control of the processing technology to make the parts have the effect of abrasion and friction reduction [12] . Qi et al prepared Co-based coatings on a 42CrMo substrate and applied a transverse static magnetic field to analyze the performance changes of the coatings [13] . As the magnetic induction intensity increased, the average grain size in the equiaxed grain region of the top cladding layer decreased from 9.73 to 2.86 μm.…”

Section: Introductionmentioning

confidence: 99%

Forming mechanism and tribological properties of a Ni-based coating prepared from transverse static magnetic field-assisted supersonic plasma spraying

Wang¹,

Huang²,

Wang³

et al. 2022

Green Manuf Open

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Magnetic field-assisted forming represents an environmentally friendly, contactless and high-efficiency technology for the development of advanced in situ manufacturing. The application of this technology provides a new concept for improving the properties of ferromagnetic wear-resistant coatings. In this study, we combine magnetic field-assisted forming with supersonic plasma spraying to prepare a Ni-based coating assisted by a transverse static magnetic field. The porosity of the magnetic field-assisted coating is below 2%, the hardness of the coating increases from 638.46 to 785.45 MPa and the tribological coefficient decreases from 0.466 to 0.422. The presence of the static magnetic field directly affects the bubble movement during the forming process of the coating, which makes the bubbles escape outward and reduces the porosity of the coating. The presence of the static magnetic field also further improves the phase structure of the coating, so that the magnetic domain distribution is uniform and the hard phase inside the coating increases. Finally, the residual stress and tribological properties of the coating are also improved.

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“…For example, Dehghani et al [5] applied a magnetic eld to both cutting tool and workpiece simultaneously, and thereby reduced the ank-face wear of the tool by 94%, reduced the cutting force by 66%, and modi ed the tribology of the tool/workpiece interface. Tharajak et al [6] deposited poly(etherether-ketone) (PEEK) coatings on low-carbon steel by thermal spray coating in the presence of a magnetic eld. The results indicated that the optimum magnetic eld enhanced coating properties, resulting in a reduced friction coe cient and increased wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of P10 Cemented Carbide Cutting Tools Subjected to Electromagnetic Coupling Field Treatment on the Surface Roughness of Machined 45 Steel

Zhong

Yuan

Meng

et al. 2021

Preprint

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Reducing the surface roughness of machined workpieces is of great interest owing to its potential for improving the quality of finished items and decreasing the cost of machining processes by reducing the need for post processing. This paper contributes to this research by analyzing the effect of P10 cemented carbide cutting tools subjected to pulsed electromagnetic coupling field processing (EMCFP) treatment on the surface roughness of machined 45 steel workpieces. The effects of untreated and EMCFP-treated cutting tools on workpiece surface roughness, tool lifetime, friction coefficient, electron paramagnetic resonance (EPR) spectra, dislocation density and residual stress are compared. The experimental results demonstrate that EMCFP treatment can reduce the average surface roughness of workpieces by 39.2%, enhance tool lifetime by a factor of 1.92, reduce the friction coefficient by 11.4%, increase the intensities of peak EPR signals, increase the dislocation density by 38% and decrease the residual stress of the tool flank face by 51.4% . This research provides scientific data and technical support for EMCFP technology with important scientific significance.

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The effects of magnetic field-enhanced thermal spraying on the friction and wear characteristics of poly(ether-ether-ketone) coatings

Cited by 10 publications

References 15 publications

Polyetheretherketone, hexagonal boron nitride, and tungsten carbide cobalt chromium composite coatings: Mechanical and tribological properties

Polyetheretherketone, hexagonal boron nitride, and tungsten carbide cobalt chromium composite coatings: Mechanical and tribological properties

Forming mechanism and tribological properties of a Ni-based coating prepared from transverse static magnetic field-assisted supersonic plasma spraying

Effect of P10 Cemented Carbide Cutting Tools Subjected to Electromagnetic Coupling Field Treatment on the Surface Roughness of Machined 45 Steel

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