Nanoscale friction and growth of surface oxides on a metallic glass under electrochemical polarization

Ma, Haitao; Bennewitz, Roland

doi:10.1016/j.triboint.2021.106925

Cited by 21 publications

(11 citation statements)

References 53 publications

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“…The characteristics of the friction results reported in Figure 2 and Figure 3 reflect the double layer structure of surface oxide films. A similar correspondence between friction and topography, on the one hand, and double layer structure, on the other hand, was observed for MG surfaces after polarization in phosphate buffer [21].…”

Section: Nanoscale Friction After Immersionsupporting

confidence: 78%

“…During repeated scanning, the gradual removal of the outer layer by the action of the sliding tip leads to the decrease of friction, and the friction of the outer layer eventually reaches zero. A detailed analysis of this process can be found in [ 21 ]. The lack of height contrast in Figure 3a is explained by penetration of the AFM tip into the soft outer layer surrounding the scan field.…”

Section: Resultsmentioning

confidence: 99%

“…The adhesion force of the inner layer versus the AFM tip is determined as the abscissa intercept of the linear fit at the zero friction force ( Figure 4a ,c). Data of the corroded surface in phosphate buffer after polarization for 80 min at 1.0 V vs Ag/AgCl [ 21 ] are shown for comparison. When a potential is applied in NaCl solution, the solution turns cloudy after a few minutes with a large amount of corrosion products released into the solution, suggesting a serious corrosion.…”

Section: Resultsmentioning

confidence: 99%

“…Surface oxide films formed during corrosion have been reported to exhibit a double layer structure with a dense, protective inner layer and a porous, precipitated outer layer [18,21,[30][31][32]. The outer layer originates from the dissolution of the underlying dense layer and the MG substrate.…”

Section: Nanoscale Friction After Immersionmentioning

confidence: 99%

“…Recently, we investigated nanoscale friction on a Zr 63 Ni 22 Ti 15 (ZrNiTi) MG in phosphate buffer after electrochemical polarization [ 21 ]. Our results demonstrated a new method to investigate in situ the structure of surface oxide films grown upon polarization in aqueous solutions using friction force microscopy.…”

Section: Introductionmentioning

confidence: 99%

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Relationship between corrosion and nanoscale friction on a metallic glass

Ma¹,

Bennewitz²

2022

Beilstein J. Nanotechnol.

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Metallic glasses are promising materials for microdevices, although corrosion and friction limit their effectiveness and durability. We investigated nanoscale friction on a metallic glass in corrosive solutions after different periods of immersion time using atomic force microscopy to elucidate the influence of corrosion on nanoscale friction. The evolution of friction upon repeated scanning cycles on the corroded surfaces reveals a bilayer surface oxide film, of which the outer layer is removed by the scanning tip. The measurement of friction and adhesion allows one to compare the physicochemical processes of surface dissolution at the interface of the two layers. The findings contribute to the understanding of mechanical contacts with metallic glasses under corrosive conditions by exploring the interrelation of microscopic corrosion mechanisms and nanoscale friction.

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Section: Nanoscale Friction After Immersionsupporting

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Nanoscale Friction After Immersionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Relationship between corrosion and nanoscale friction on a metallic glass

Ma¹,

Bennewitz²

2022

Beilstein J. Nanotechnol.

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Influence of Oxidation on Structure, Performance, and Application of Metallic Glasses

et al. 2022

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Owing to their unique structure and outstanding properties, metallic glasses are a novel class of structural and functional materials with vast application prospects. However, the metastable amorphous structures and chemical activity of metallic glass constituent elements lead to frequent oxidation during preparation, processing, and application. Comprehensively understanding the oxidation behaviors and underlying mechanisms of metallic glasses is essential for gaining knowledge of metallic glass structures and properties and for promoting engineering applications. Although many studies have examined these issues, more investigations are still required to explore potential industrial applications of metallic glasses. Here, recent research on metallic glass oxidation is consolidated by summarizing the oxidation influence on metallic glass structure, performance, and application and the possibilities and feasibility of oxidizing metallic glasses to reinforce materials or develop material systems are discussed.

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Friction and Degradation of Graphite: A Nanotribological Approach

Kim,

Caron

2023

Tribol Lett

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We investigated the friction and wear of graphite by atomic force microscopy in sliding contact with SiO x , Pt, and diamond tips with contact forces up to several micronewtons. Graphite's tribology strongly depends on the chemistry of the counter body. With a SiO x tip, friction is governed by puckering. Wear initiates at surface steps by mechanical destabilization of folds. With a Pt tip, the adhesive effects lead to the exfoliation of graphite. At higher loads, friction crosses over from exfoliation to puckering. For SiO x and Pt, the wear rate is low in ambient conditions. In the case of diamond tips, we measured a friction coe cient and a wear rate of an order of magnitude larger than with SiO x or Pt tips.

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Nanoscale friction and growth of surface oxides on a metallic glass under electrochemical polarization

Cited by 21 publications

References 53 publications

Relationship between corrosion and nanoscale friction on a metallic glass

Relationship between corrosion and nanoscale friction on a metallic glass

Influence of Oxidation on Structure, Performance, and Application of Metallic Glasses

Friction and Degradation of Graphite: A Nanotribological Approach

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