High performance nanocomposites for tribological applications: Preparation and characterization

Goyal, R. K.; Tiwari, Ashutosh; Negi, Yuvraj Singh

doi:10.1016/j.msea.2007.09.047

Cited by 31 publications

(36 citation statements)

References 27 publications

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“…A similar trend is observed for Al 2 O 3 filled PEEK nanocomposites. 18 Wear rate and coefficient of friction The specific wear rate of PEEK and its nanocomposites is shown in Figure 6. The specific wear rate of nanocomposites decreases with increasing Si 3 N 4 content.…”

Section: Scratch Hardnessmentioning

confidence: 99%

“…This is similar to that of Al 2 O 3 filled PEEK nanocomposite. 18 As the Si 3 N 4 nano particles increases there will be more microploughing and third body abrasion taking place which will increase the friction between the pin and the counter surface. And because of this increased friction more and more metallic particles get into the wear debris, which are detected by the EDS.…”

Section: Scratch Hardnessmentioning

confidence: 99%

“…[13][14][15] Moreover, the wear resistance significantly depends on many factors, such as dispersion state, size, volume fraction, and type of nano sized particles, and crystallinity of the polymer matrices. [16][17] Recently, Goyal et al 18,19 have demonstrated the effect of micro and nano particles of Al 2 O 3 on wear resistant of PEEK matrix composites. They reported that nanoparticles were more effective than micro particles in improving wear resistance of PEEK composites prepared and tested under the similar conditions.…”

Section: Introductionmentioning

confidence: 99%

“…They reported that nanoparticles were more effective than micro particles in improving wear resistance of PEEK composites prepared and tested under the similar conditions. [18][19] Wang et al 8 have studied the wear behavior of Si 3 N 4 filled PEEK nanocomposites using block-on-ring machine. 8 However, authors have not discussed crystallinity, scratch hardness and dynamic modulus of this nanocomposite, which are important factors to know about the wear mechanisms of composites.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and properties of high performance PEEK/Si₃N₄ nanocomposites

Balaji

Tiwari

Goyal³

2010

J of Applied Polymer Sci

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The crystallization, morphology, microhardness, scratch hardness, dynamic modulus, and wear behavior of high performance poly(ether-ether-ketone) (PEEK) matrix nanocomposites reinforced with 0 to 30 wt % silicon nitride (Si 3 N 4 ) nanoparticles were reported. The crystallinity of PEEK nanocomposites increases at 2.5 wt % Si 3 N 4 but, thereafter it decreases with increasing Si 3 N 4 content due to the hindrance to the ordering of PEEK chains. The crystallization peak temperature and crystallization onset temperature increases by 14 C for 10 wt % nanocomposite. The melting temperature does not vary significantly with Si 3 N 4 content. SEM shows almost uniform distribution of Si 3 N 4 in the PEEK matrix. The Vickers microhardness and scratch hardness increases significantly up to 10 wt % Si 3 N 4 content.The dynamic modulus of nanocomposites increases below and above T g of PEEK. The specific wear rate of nanocomposites with 2.5 wt % Si 3 N 4 is reduced significantly and it is lowest at 10 wt % Si 3 N 4 . However, the coefficient of friction of nanocomposites is more than that of pure PEEK.

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Section: Scratch Hardnessmentioning

confidence: 99%

Section: Scratch Hardnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication and properties of high performance PEEK/Si₃N₄ nanocomposites

Balaji

Tiwari

Goyal³

2010

J of Applied Polymer Sci

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“…However, it is difficult to use PEEK in pristine form because of its high friction coefficient and stick-slip behavior. Many research efforts have been devoted to a further improvement of the properties of PEEK via an incorporation with fillers, such as carbon fibers, glass fibers [4,5], and nanoparticles [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The surface modifications of multi-walled carbon nanotubes for multi-walled carbon nanotube/poly(ether ether ketone) composites

Cao

Qiu

Yang

et al. 2015

Applied Surface Science

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Please cite this article as: Z. Cao, L. Qiu, Y. Yang, Y. Chen, X. Liu, The surface modifications of multi-walled carbon nanotubes for multi-walled carbon nanotube/poly (ether ether ketone) composites, Applied Surface Science (2015), http://dx.Abstract The effects of surface modifications of multi-walled carbon nanotubes (MWCNTs) on the morphology, dynamic mechanical and tribological properties of multi-walled carbon nanotube/poly (ether ether ketone) (MWCNT/PEEK) composites have been investigated. MWCNTs were treated with mixed acids to obtain acid-functionalized MWCNTs. Then the acid-functionalized MWCNTs were modified with ethanolamine (named e-MWCNTs). The MWCNT/PEEK composites were prepared by a solution-blending method. A more homogeneous distribution of e-MWCNTs within the composites was found with scanning electron microscopy. Dynamic mechanical analysis demonstrated a clear increase in the storage modulus of e-MWCNT/PEEK composites because of the improved interfacial adhesion strength between e-MWCNTs and PEEK. Furthermore, the presence of e-MWCNTs caused an A c c e p t e d M a n u s c r i p t 2 enhancement in the glass transition temperature of the composites. Wear tests have shown that the friction coefficient of e-MWCNT/PEEK composites decreased significantly during the test after the running-in period. This suggests that there is an obvious improvement in tribological properties of e-MWCNT/PEEK composites. Overall, the e-MWCNT/PEEK composites have exhibited improved properties and are promising for their applications in industry.

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Sintered Hydroxyapatite/Polyetheretherketone Nanocomposites: Mechanical Behavior and Biocompatibility

Yeung

et al. 2011

Adv Eng Mater

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Hydroxyapatite nanorods (nHA) are employed to fill polyetheretherketone (PEEK) composites. The PEEK/nHA nanocomposites containing 15.1–38.2 vol% nHA are fabricated by powder processing and sintering. Their mechanical, thermal and in vitro cell properties are investigated. The tensile strength and fracture strain of PEEK‐ nanocomposites filled with 21.6 and 29.2 vol% nHA match closely with those of human cortical bones. Sintered 15.1 and 29.2 vol% nHA/PEEK nanocomposites exhibit excellent biocompatibility. The 29.2 vol.% nHA/PEEK nanocomposite promotes adhesion and proliferation of mouse and human osteoblasts effectively.

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High performance nanocomposites for tribological applications: Preparation and characterization

Cited by 31 publications

References 27 publications

Fabrication and properties of high performance PEEK/Si₃N₄ nanocomposites

Fabrication and properties of high performance PEEK/Si₃N₄ nanocomposites

The surface modifications of multi-walled carbon nanotubes for multi-walled carbon nanotube/poly(ether ether ketone) composites

Sintered Hydroxyapatite/Polyetheretherketone Nanocomposites: Mechanical Behavior and Biocompatibility

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High performance nanocomposites for tribological applications: Preparation and characterization

Cited by 31 publications

References 27 publications

Fabrication and properties of high performance PEEK/Si3N4 nanocomposites

Fabrication and properties of high performance PEEK/Si3N4 nanocomposites

The surface modifications of multi-walled carbon nanotubes for multi-walled carbon nanotube/poly(ether ether ketone) composites

Sintered Hydroxyapatite/Polyetheretherketone Nanocomposites: Mechanical Behavior and Biocompatibility

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Fabrication and properties of high performance PEEK/Si₃N₄ nanocomposites

Fabrication and properties of high performance PEEK/Si₃N₄ nanocomposites