Velocity dependence of nano-abrasive wear of amorphous polymers obtained using a spiral scan pattern

Rice, Reginald H.; Gnecco, Enrico; Wannemacher, Reinhold; Szoszkiewicz, Robert

doi:10.1016/j.polymer.2013.05.015

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…Tip trajectory: Gnecco et al have also evidenced that ripple patterns could be obtained via circular or spiral trajectories of the tip [ 22 , 36 ] inducing in this way the formation of a rippled structure along the circumference of a scanned circle ( Fig. 2 ).…”

Section: Reviewmentioning

confidence: 99%

Nanoscale rippling on polymer surfaces induced by AFM manipulation

D’Acunto¹,

Dinelli²,

Pingue³

2015

Beilstein J. Nanotechnol.

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SummaryNanoscale rippling induced by an atomic force microscope (AFM) tip can be observed after performing one or many scans over the same area on a range of materials, namely ionic salts, metals, and semiconductors. However, it is for the case of polymer films that this phenomenon has been widely explored and studied. Due to the possibility of varying and controlling various parameters, this phenomenon has recently gained a great interest for some technological applications. The advent of AFM cantilevers with integrated heaters has promoted further advances in the field. An alternative method to heating up the tip is based on solvent-assisted viscoplastic deformations, where the ripples develop upon the application of a relatively low force to a solvent-rich film. An ensemble of AFM-based procedures can thus produce nanoripples on polymeric surfaces quickly, efficiently, and with an unprecedented order and control. However, even if nanorippling has been observed in various distinct modes and many theoretical models have been since proposed, a full understanding of this phenomenon is still far from being achieved. This review aims at summarizing the current state of the art in the perspective of achieving control over the rippling process on polymers at a nanoscale level.

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Section: Reviewmentioning

confidence: 99%

Nanoscale rippling on polymer surfaces induced by AFM manipulation

D’Acunto¹,

Dinelli²,

Pingue³

2015

Beilstein J. Nanotechnol.

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“…We calculated the average Hertz pressure [38] of the steel ball contact with a polystyrene plane (Table 2). Fig.…”

Section: Friction and Wearmentioning

confidence: 99%

“…Finally, recent studies of polystyrene [35][36][37][38][39] suggest three main mechanisms that control its tribological behavior:…”

Section: Introductionmentioning

confidence: 99%

Friction and wear of polystyrene crystal sliding against steel 100Cr6 in unlubricated contact

Aounallah¹,

Loucif

Khennafi-Benghalem

2022

Phys. Chem. Solid St.

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The Tribological behavior of Polystyrene Crystal disc sliding against a steel 100Cr6 ball with a radius of 5mm over a range of loads (1-5N) and speeds (12.5-63mm/s) was investigated using a ball-on-disc tribometer under unlubricated conditions. All the specimens were used as obtained from injection molding. For this purpose, we monitored the evolution of the friction coefficient and the wear rate as a function of sliding speed and normal load applied. The worn surfaces were examined by Scanning Electron (SEM) and optical microscope. Several wear mechanisms were observed: plastic deformation, abrasion in the track, and adhesion at the edge of the track. The mechanisms were found to depend on speed and load. The wear rate is of the order of 10-2mm3/N.M, which may explain that the wear is of a severe type.

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“…And it has been show that the fracture behavior of PTFE undergoes transition from brittle-fracture to ductile-fracture associated with crystallinity phase transformation. Another point indicates that the formation of a partially amorphous phase in polymer is highlighted and could improve physical properties of poly [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Wearing Research of Modified PTFE Materials in Water Pump Bearing

Wang

et al. 2013

AMR

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Two kinds of polytetrafluoroethylene (PTFE) composites PTFE/GF/Gr (sample 1) and PTFE/GF/Gr/Cu (sample 2) were prepared by mixed molding method. X-ray diffraction results show that sample 2 is crystal structure, while sample 1 is amorphous/crystal structure. They were processed into the bearing bushes, which were installed on the water pump bearing to study the influence of different structures on friction properties by rotating bearing. Experimental results reveal that the wearing rate of sample 2 is much higher than that of sample 1. From the optical microscope and SEM analysis of the worn surface, it indicates that the wearing mechanism of sample 1 with amorphous structure is adhesive wearing, while that of sample 2 is abrasive and fatigue wearing mechanism. Our results indicate that the PTFE composition with amorphous matrix can be used to sliding bearings because of its ideal self-lubricating properties.

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Velocity dependence of nano-abrasive wear of amorphous polymers obtained using a spiral scan pattern

Cited by 3 publications

References 21 publications

Nanoscale rippling on polymer surfaces induced by AFM manipulation

Nanoscale rippling on polymer surfaces induced by AFM manipulation

Friction and wear of polystyrene crystal sliding against steel 100Cr6 in unlubricated contact

Wearing Research of Modified PTFE Materials in Water Pump Bearing

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