Abrasive and adhesive wear behaviour of metallic bonds in a synthetic slurry test for wear prediction in reinforced concrete

Fabbro, Stefan; Araujo, Lucas Marra; Engel, Jona; Kondratiuk, Jens; Kuffa, Michal; Wegener, Konrad

doi:10.1016/j.wear.2021.203690

Cited by 18 publications

(3 citation statements)

References 24 publications

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“…This sign of failure which is caused or strengthened by compression is clearly visible in figure 8(D). Some studies [25,26] of abrasive wear surface have found a similar morphology. Gahr [27] also reported that such abrasive wear can be caused by hard particles sliding on a softer solid surface which can lead to detaching material.…”

Section: Failure Mechanismmentioning

confidence: 75%

Wear reliability and failure mechanism of inkjet-printed conductors on paperboard substrate

Tanninen

Keskinen

et al. 2023

Flex. Print. Electron.

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In this research, we conducted a wear test on inkjet-printed silver conductors using different loads and counter materials (two paperboards, brushed steel sheet, and sandpaper) with similar surface roughness values. The conductor’s reliability was characterized by resistance measurement, the failures and tested counter materials were analyzed using an optical microscope, profilometer, Scanning Electron Microscope (SEM), and Energy Dispersive Spectrometer (EDS). It was found that the counter material has a dominant impact on a conductor’s reliability and failure mechanism compared with load. The conductors were exceptionally reliable but subject to adhesive wear when tested by paperboards. They were also highly reliable when tested by brushed steel sheet although the silver became severely detached, and the conductivity was lost suddenly when a major scratch was caused by two-body and three-body abrasive wear mechanisms. Sandpaper rubbing caused the most severe silver detachment and quick loss of conductivity, as a large amount of small-size (5 – 15 µm) silicon carbide (SiC) particles with sharp edges and corners caused a dense cutting effect via two-body abrasive wear (by cutting) mechanism. Additionally, the failures in almost all samples occurred in the areas in contact with the counter edges, suggesting that failure was accelerated by the edge effect. This study proves that inkjet-printed electronics on the investigated paperboard is exceptionally durable when rubbed by paperboards and steel sheets, and thus provides a reliable solution to intelligent packaging. To promote intelligent packaging, more paperboards, as well as approaches for reducing the edge effect can be investigated.

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Section: Failure Mechanismmentioning

confidence: 75%

Wear reliability and failure mechanism of inkjet-printed conductors on paperboard substrate

Tanninen

Keskinen

et al. 2023

Flex. Print. Electron.

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“…The oxygen content is significantly higher than that of the matrix. [31,32] The friction form of 17Cr2Ni2MoVNb steel was mainly of oxidation wear and abrasive wear, while 20Cr2Ni4A steel contained severe adhesive wear, abrasive wear, oxidation wear and a small amount of stress fatigue wear [33][34][35][36][37].…”

Section: Effect Of Cryogenic Treatment and Tempering On Mechanical Propertiesmentioning

confidence: 99%

Effect of Cryogenic Treatment on Microstructure, Mechanical Properties and Distortion of Carburized Gear Steels

Yan

Liu²,

Luo

et al. 2021

Metals

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The effects of cryogenic treatment and low temperature tempering on the microstructure, mechanical properties and distortion of the 20Cr2Ni4A and 17Cr2Ni2MoVNb carburized gear steels were investigated. The results showed that the case hardness of the experimental steels was increased after the cryogenic treatment, due to the decrease of the retained austenite content and the precipitation of the tiny carbides. The wear resistance of the two steels after cryogenic treatment was improved, although the wear mechanisms were different for 17Cr2Ni2MoVNb and 20Cr2Ni4A steels. The distortion of the Navy C-ring specimens underwent shrinkage before expansion during the cryogenic process, and the distortion of 17Cr2Ni2MoVNb steel was smaller than that of 20Cr2Ni4A steel.

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“…On the surface of materials, there are lots of dangling bonds due to the deficiency of atomic coordination. Without other atoms involved in passivation, the atomic orbitals can be hybridized with each other, which will cause an intense interaction between the relative interfaces in contact, and, in turn, produce severe adhesion that results in friction and wear. − On the basis of such a perspective, liquid and/or solid additives have been executed to alter the interaction configuration of the intrinsic interface, achieving the reduction of friction and wear, what is called lubrication. Traditionally, organic molecular compounds bearing sulfur, phosphorus, and halogen atoms have been employed to change the atomic interaction configuration via the formation of a tribochemical reaction film at the frictional interface. − In general consensus, the tribochemical reaction film deriving from strong interactions, such as covalent bonds or ionic bonds, is superior to function as a lubricant than the weaker ones, for example, van der Waals, coordination, or hydrogen bonding.…”

Section: Introductionmentioning

confidence: 99%

Interactions Balancing Competition and Cooperation between Covalent–Organic Framework Additives and PEG Base Oil toward Advanced Lubrication

Wen

Yan

Dong

et al. 2022

ACS Appl. Mater. Interfaces

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Severe competition between nanolubricant additives and polar lubricating oil molecules for the formation of lubricant films has been hindering the progress of green and advanced lubricants. In this work, based on the tautomerism of cyanuric acid molecule (trione and triol configurations), two kinds of triazine-based covalent−organic frameworks (COFs), that is, Ton-COFs and Tol-COFs, were synthesized as additives of the polar PEG 400 oil, realizing compromise between them by providing delicate interactions. The triazine matrix bonding with intense polar groups in the framework of additives offers more powerful interactions to competitively form the adsorbed lubricant film on the surface of the metal substrate over PEG 400 oil and also bolts PEG 400 oil molecules by the hydrogen bonding inside the pore of the framework to cooperatively bear against the load. Molecular quantum chemical calculations further confirm that Ton-COFs can produce a more intense interaction with Fe atoms in the form of coordination and ions•••π than Tol-COFs, far beyond PEG 400, and the cross-sectional profile of the worn surface definitely exhibits a protective lubricant film only composed of Ton-COFs. Consequently, at the low concentration of 0.3 wt %, the excellent friction reduction (41.2%) and antiwear property (97.4%) are achieved for the Ton-COFs compared to pure PEG 400 oil; moreover, 28.6% and 79.0% for Tol-COFs at the essential concentration of 0.7 wt % are achieved. This finding provides a novel insight from molecules to materials into guiding the development of additives for advanced lubricants.

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Abrasive and adhesive wear behaviour of metallic bonds in a synthetic slurry test for wear prediction in reinforced concrete

Cited by 18 publications

References 24 publications

Wear reliability and failure mechanism of inkjet-printed conductors on paperboard substrate

Wear reliability and failure mechanism of inkjet-printed conductors on paperboard substrate

Effect of Cryogenic Treatment on Microstructure, Mechanical Properties and Distortion of Carburized Gear Steels

Interactions Balancing Competition and Cooperation between Covalent–Organic Framework Additives and PEG Base Oil toward Advanced Lubrication

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