Quantitative wear analysis using atomic force microscopy

Schöfer, Jörg; Santner, E.

doi:10.1016/s0043-1648(98)00303-2

Cited by 26 publications

(9 citation statements)

References 6 publications

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“…Micro-wear measurements have been the objective of the rapid development of precise measuring tools following the introduction of AFM. [3][4][5][6][7] The knowledge of wear mechanisms at micro-and nanoscales could help to quantify the distribution of material loss during relative motion of surfaces. In fact, weighing the sample before and after the test has been the dominant wear quantification technique.…”

Section: Characterization Of Wear For Plla and Pmma At Micro-and Nanomentioning

confidence: 99%

Atomic force microscopy wear characterization of biomedical polymer coatings

et al. 2006

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Atomic force microscopy (AFM) has become established as a powerful and versatile tool for investigating local mechanical properties. In addition, through the AFM tip-sample interaction, it has become possible to study the effects of perturbations and modifications to the surface of soft samples, such as polymers. The accurate knowledge of their response to continuous AFM scanning could help to design new materials having desirable mechanical properties. In this paper, we present the results obtained by applying a new methodology to investigate wear properties on two different type of polymer, poly(methyl-methacrylate) and poly(L-lactic acid). These polymers have been widely employed in biomedical applications and have recently been considered as good candidates for coronary metallic stent coatings.Figure 3. Four image series for (left) PMMA and (right) PLLA (applied load 1 nN, pyramidal tip with nominal radius 40 nm) 264 L. Lazzeri et al.

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Section: Characterization Of Wear For Plla and Pmma At Micro-and Nanomentioning

confidence: 99%

Atomic force microscopy wear characterization of biomedical polymer coatings

et al. 2006

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“…Washe et al 22 performed wear measurements and calculated wear volume of a flat disk rubbed against 100Cr6 ball in tribotest rig with high-resolution atomic force microscopy (AFM). Scho¨fer et al 23 performed wear volume measurements of flat substrates tested in tribotest rig. Degiampietro et al 24 also performed wear volume measurements on flat stainless steel substrate with AFM.…”

Section: Introductionmentioning

confidence: 99%

Quantitative comparison of tribological performance of chromium- and zinc-phosphate-coated piston rings in tribotest rig

Özkan

Kaleli̇

Yüksek

2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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The main purpose of this paper is to investigate the tribological performance of the zinc-phosphate-and chromiumcoated spheroidal cast iron piston rings in reciprocating tribotest rig with conventional commercial lubricant. Results of the experiments showed that tribofilm was formed both on ring and liner surfaces. Zinc phosphate coating was removed from the ring surface after the experiments. Wear rate of liner-chromium-coated ring pair was lower than the linerphosphate-coated ring. The friction coefficient of the liner-phosphate-coated ring pair ranged from 0.104 to 0.124, lower than the liner-chromium-coated ring, which ranged from 0.114 to 0.129. Change of average surface roughness was also lower in chromium-coated ring (31%) than the phosphate-coated ring (72%). Test results showed that hard chromiumcoated ring had better tribological performance and coating efficiency than the phosphate-coated ring due to wear resistance and lower change of average surface roughness.

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“…Both AFM measurements have been performed on flat substrate surfaces in published tribological works. There are a few studies that have carried out surface measurements on real cylinder liner surfaces which are difficult for AFM tips to perform contact mode measurements on these surfaces because of having curves and deep honing marks on their surface structures [10][11][12][13]. This paper presents AFM contact mode quantitative wear measurements on real grey cast iron cylinder substrates to evaluate wear rate of observed wear scars.…”

Section: Introductionmentioning

confidence: 99%

Surface and Wear Analysis of Zinc Phosphate Coated Engine Oil Ring and Cylinder Liner Tested with Commercial Lubricant

Özkan

Kaleli̇

2014

Advances in Mechanical Engineering

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The objective of this study was to evaluate the tribological performance through investigating protective additive layer and friction coefficient and implementing the quantitative wear measurements on the rubbed surface of the sliding pairs. The specimens of oil ring were rubbed against cast iron engine cylinder liner under boundary lubrication conditions. The ring and liner surfaces were examined by optical, scanning electron microscope and atomic force microscopy. The elemental analysis of surfaces was performed by using energy dispersive X-ray spectroscopy. Surface observations showed that coating was removed from the ring surface. Higher levels of Ca, Zn, P, and S elemental ratios (0.93%, 0.45%, 1.55%, and 1.60% as atomic percent) were detected on the cylinder liner surface. Wear width, length, and depth measurements were performed by optical and atomic force microscopies on the ring and cylinder liner surface. The results showed that wear widths for oil ring were 1.59 m and 1.65 m; wear widths for cylinder liner were 3.20 m and 3.18 m; wear depths for oil ring were 100 nm; and wear depths for cylinder liner were 482 nm. Wear data were taken mostly from the additive layer points detected by SEM and X-ray measurements.

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Quantitative wear analysis using atomic force microscopy

Cited by 26 publications

References 6 publications

Atomic force microscopy wear characterization of biomedical polymer coatings

Atomic force microscopy wear characterization of biomedical polymer coatings

Quantitative comparison of tribological performance of chromium- and zinc-phosphate-coated piston rings in tribotest rig

Surface and Wear Analysis of Zinc Phosphate Coated Engine Oil Ring and Cylinder Liner Tested with Commercial Lubricant

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