Crystalline ha coating on peek via chemical deposition

Almasi, Davood; Izman, S.; Assadian, Mahtab; Ghanbari, Mohammad; Kadir, Mohammed Rafiq Abdul

doi:10.1016/j.apsusc.2014.06.074

Cited by 66 publications

(46 citation statements)

References 37 publications

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“…In addition, SEM images showed the changes from a plain homogenous pattern to a complex fiber network with porosities and blister-like sub-surface in the 98% sulfuric acid treated group compared to the control group. However, FTIR analysis could not detect any new peak around 3,440 cm −1 , which has been claimed to represent the alcohol group bond of the sulfonic acid functional group 25,26) . Therefore, it was assumed that an one-min application of 98% sulfuric acid could cause changes only in the surface characteristics, without creating any new functional groups.…”

Section: Discussionmentioning

confidence: 94%

“…Previous studies have shown that piranha etching significantly increased the strength of the bonds between PEEK and dental adhesives by removing organic remnants, increasing surface polarity, and breaking aromatic structures. These led to an increase in the number of functional groups 19,25,26) . The finding of this study did not fully support those of previous studies because the result of FTIR did not show any new chemical spectra.…”

Section: Discussionmentioning

confidence: 99%

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Effect of surface pretreatments on resin composite bonding to PEEK

et al. 2016

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This study evaluated the effect of surface pretreatments on resin composite bonding to polyetheretherketone (PEEK). Four groups of surface pretreatment (no pretreatment, etched with 98% sulfuric acid, etched with piranha solution and sandblasting with 50 µm alumina) were performed on PEEK. Surface roughness, Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) analysis were examined. Shear bond strength (SBS) and interface characteristics were also evaluated after the specimens were bonded with resin materials. Two-way ANOVA analysis revealed significance on two main effects and interactions. Tukey's multiple comparisons test showed that the SBS of resin composite on PEEK were the highest in the group etched with 98% sulfuric acid and bonded with Heliobond ® (p<0.05). All pretreatments produced similar spectra of FTIR patterns. SEM demonstrated porosities and pitting from chemical etching, which suggested a significant influence on the adhesion between PEEK and resin materials.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Effect of surface pretreatments on resin composite bonding to PEEK

et al. 2016

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“…During the past decades, different additives, except the modification of surface properties [21][22][23][24][25][26][27][28][29][30], were added into PEEK or PI to improve tribological properties. Many researchers conducted various experiments to investigate the friction coefficient and wear rate of various conditions, providing comprehensive mechanisms of friction and wear at different conditions.…”

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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“…The volume resistivity (10 14 Ω·m) and surface resistance (10 15 Ω) of PEEK are very high, [2] which made it be a good insulating material. However, it limits its use in the area of electronic conduction and electromagnetic interference shielding.…”

Section: Introductionmentioning

confidence: 99%

“…So the pretreatment of PEEK is important to improve the bone fixation. Almasi et al [10] pretreated PEEK polymer by 98 wt% concentrated sulfuric acid and produced an interpenetrated holes surface, and then hydroxyapatite was deposited into the interpenetrated holes. In some industrial and medical areas, PEEK must be firmly adhered to PEEK or other materials to ensure device working normally.…”

Section: Introductionmentioning

confidence: 99%

Study on the Pretreatment of Poly (ether ether ketone) by Wet Chemistry and Its Effect on the Surface Morphology

Zhai¹,

Di²,

Yang³

2016

Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer

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Abstract. Poly (ether ether ketone) was pretreated by wet chemistry and different surface morphology was obtained. In swelling treatment, with the increase of sulfuric acid concentration, the holes on surface changed from isolated structure to interpenetrated structure, the number and density of the holes increased, and the wall of the holes became thinner. Different kinds of cleaning solution could lead to different surface morphology. When sulfuric acid was used as cleaning solution, with the decrease of sulfuric acid concentration in cleaning, the holes on surface changed from isolated structure to interpenetrated structure, the number and density of the holes increased, and the wall of the holes became thinner.

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Crystalline ha coating on peek via chemical deposition

Cited by 66 publications

References 37 publications

Effect of surface pretreatments on resin composite bonding to PEEK

Effect of surface pretreatments on resin composite bonding to PEEK

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

Study on the Pretreatment of Poly (ether ether ketone) by Wet Chemistry and Its Effect on the Surface Morphology

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