On the Fundamental Nature of Metal-Metal Adhesion

Sargent, L. B.

doi:10.1080/05698197808982886

Cited by 21 publications

(4 citation statements)

References 20 publications

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“…For the boron succinimide-lubricated cylinder liner, the behavior of the adhesive wear is consistent with the literature, which explains this situation as result of change in load, lubrication regimes and film thickness [35]. At the TDC, where temperature and load are higher, the tendency of ring and liner to adhere to each other increased [36]. In addition to this, sliding velocity effected adhesion behavior because when sliding speed decreases like at TDC and BDC, contact area of cylinder liner and piston ring increases exponentially which results in higher metal-metal contact and degree of adhesion especially under high load and boundary lubrication regime [37].…”

Section: Adhesion Wear Mechanismsupporting

confidence: 86%

The anti-wear efficiency of boron succinimide on engine cylinder liner and piston ring surfaces

Özkan

Sulukan

2018

J Braz. Soc. Mech. Sci. Eng.

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Anti-wear additives are important components of the lubricating oils which protect the sliding surfaces from wear. Researches on developing the non-phosphorus catalysis-friendly anti-wear additive still continue due to government's regulations. One way to provide non-phosphorus anti-wear additive is boron and sulfur addition to succinimides. In this study, boron succinimide used as an anti-wear additive is compared with ZDDPs in a real engine environment by the engine bench tests. Anti-wear performances were evaluated by microscopic and spectroscopic surface analyses on engine cylinder liner and piston rings after 100-h engine running periods for each anti-wear additive. SEM/EDX and XPS analyses were used to evaluate the tribochemical analyses of tribofilms. SEM and AFM were used to evaluate wear mechanisms on cylinder liner and piston ring surfaces. Results showed that boron succinimide can be an alternative anti-wear additive of ZDDPs from the perspective of anti-wear efficiency.

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Section: Adhesion Wear Mechanismsupporting

confidence: 86%

The anti-wear efficiency of boron succinimide on engine cylinder liner and piston ring surfaces

Özkan

Sulukan

2018

J Braz. Soc. Mech. Sci. Eng.

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“…Therefore, factors affecting the metal–metal adhesion depend on the atomic binding energies, distribution of the atomic species in the surface layers, surface structure, and crystal lattice orientation. Metals that lack electrons in the s or p orbitals are more likely to form adhesive connections with other metals and alloys [ 54 ]. Sn has the atomic number 50, with an electronic configuration of 5 s 2 5 p 2 in the outermost shell.…”

Section: Resultsmentioning

confidence: 99%

A Comparative Study of Different Poly (Lactic Acid) Bio-Composites Produced by Mechanical Alloying and Casting for Tribological Applications

Abir

Trindade

2023

Materials

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The aim of this study was to fabricate different self-lubricating poly (lactic acid)-based bio-composites reinforced with mono- and multi-fillers of carbon fibers, graphene nanoparticles, and a soft Sn-based brazing alloy (Sn89-Zn8-Bi3) using a two-step process consisting of mechanical alloying followed by casting. The results showed that the incorporation of the different fillers on the PLA surface by mechanical alloying was quite homogenous. The volume ratio between the PLA and the fillers was 1:0.02, respectively. The PLA sample reinforced with short carbon fibers and graphene nanoparticles presented the highest hardness (84.5 Shore D, corresponding to a 10% increase compared to PLA) and the lowest specific wear rate (1.5 × 10−4 mm3/N·m, one order of magnitude lower than PLA). With regard to the coefficient of friction, the lowest value was obtained for the sample reinforced with graphene (0.43, corresponding to a decrease of 12% compared to PLA).

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“…The use of dissimilar materials may reduce the severity of adhesion, which predominates when similar materials are fretted. However, titanium and its alloys are known to experience adhesive wear when mated with most engineering materials, even ceramics owing to their poor resistance to adhesion and galling [11,12]. It is also reported that this high tendency to adhere is related to the high and unstable coefficient of friction [12].…”

Section: Introductionmentioning

confidence: 99%

Fretting fatigue behaviour of Ti–6Al–4V in contact with Alloy 718

Srivathsan¹,

Raman²

2021

Tribology - Materials, Surfaces & Interfaces

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In studies on a material fretted with different contact pad materials having different hardness values, there will be effect of both chemical composition and hardness. In the present work, the effect of hardness was studied by keeping the chemical composition of the contact pad material the same. Test samples were made of Ti-6Al-4V and fretting pads were made of Alloy 718. By heat treatments (annealing and ageing), the hardness of the pads was changed. The effect of hardness of pads was observed only at higher contact pressure of 175 MPa and lower cyclic stresses, where annealed pads restricted the life of Ti-6Al-4V samples compared to aged pads. This is because the relatively softer Alloy 718 pads in annealed condition had relatively higher adhesion to the Ti-6Al-4V samples leading to higher tangential force coefficient values compared to that of harder pads in the aged condition.

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On the Fundamental Nature of Metal-Metal Adhesion

Cited by 21 publications

References 20 publications

The anti-wear efficiency of boron succinimide on engine cylinder liner and piston ring surfaces

The anti-wear efficiency of boron succinimide on engine cylinder liner and piston ring surfaces

A Comparative Study of Different Poly (Lactic Acid) Bio-Composites Produced by Mechanical Alloying and Casting for Tribological Applications

Fretting fatigue behaviour of Ti–6Al–4V in contact with Alloy 718

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