Formation of the third bodies of steel sliding against brass under lubricated conditions

Liu, Lin; Sheng, Yuanyuan; Liu, Ming; Dienwiebel, Martin; Zhang, Zhichen; Dastan, Davoud

doi:10.1016/j.triboint.2019.04.011

Cited by 45 publications

(16 citation statements)

References 36 publications

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“…Meanwhile, the wear rate increases steadily during the speed from 15.7 to 39.3 m/s, and then increases sharply when the speed rises to 47.1 m/s like PF (shows in Figure 2 b). This phenomenon is consistent with that of some relevant and recent reported papers, in which the friction coefficient and wear rate decreased with the increasing Gr content below 10 vol.% [ 46 , 47 , 48 ]. The specimen 20Gr has the same friction coefficient of 0.35 from the speed of 7.9 to 15.7 m/s.…”

Section: Resultssupporting

confidence: 93%

“…The fluctuant variations of the curves indicates that the friction performance of raw matrix of PF is unstable with the increasing sliding speeds. Frictional phenomena such as severe noise and vibrations are observed during the friction tests, which correspond to PF composite without friction modifier that have been reported [ 46 ].…”

Section: Resultsmentioning

confidence: 71%

“…In general, with the increase of volume fraction of Gr, the frictional composites show lower friction coefficient and better wear resistance with increasing speed. the friction tests, which correspond to PF composite without friction modifier that h been reported [46]. The tribological characteristics of PF-based friction composites are further analyzed in terms of the percentage of friction stability against increasing speed.…”

Section: Friction and Wear Propertiesmentioning

confidence: 99%

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Tribological Behavior of Phenolic Resin-Based Friction Composites Filled with Graphite

Gao

et al. 2021

Materials

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In this paper, the influence of graphite (Gr) on the dry sliding tribological properties of phenolic resin (PF) composites was studied under different sliding speeds of 3.1–47.1 m/s. The wear mechanism was investigated by the observation of the morphology of the transfer layer during the dry sliding process. It was found that the addition of Gr could decrease the friction coefficient and wear rate effectively, and the friction coefficient and wear rate decreased with the increase of Gr content in the range of 10–30 vol.%. The dominant wear mechanisms of PF-based friction composites changed from adhesive wear to fatigue wear (in the form of peeling-off) in the high sliding speed condition after the addition of Gr. The addition of Gr effectively reduced the sensitivity of PF-based friction materials to sliding speeds, and thus enhanced the stability of the friction coefficient. When the content of Gr was above 20 vol.%, the stability of the friction coefficient was relatively steady.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 71%

Section: Friction and Wear Propertiesmentioning

confidence: 99%

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Tribological Behavior of Phenolic Resin-Based Friction Composites Filled with Graphite

Gao

et al. 2021

Materials

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“…In fact, denser microstructures have lower scratch volumes. 30,31 Figure 8 illustrates the variation of hardness and the elastic modulus of all samples as a function of substrate temperature. The results show that both these quantities increase on increasing the substrate temperature up to 600 °C.…”

Section: Resultsmentioning

confidence: 99%

Structural and tribological properties of tungsten oxide thin film on a silicon substrate

Ziakhodadadian

Ren

2020

Journal of Chemical Research

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In this work, tungsten oxide thin films are deposited on silicon substrates using the hot filament chemical vapor deposition system. The influence of substrate temperature on the structural, morphological, and elemental composition of the tungsten oxide thin films is investigated using X-ray diffraction, field-emission scanning electron microscopy, and X-ray photoelectron spectroscopy techniques. Also, the mechanical and tribological properties of these thin films are considered using nanoindentation and scratch tests. Based on X-ray diffraction results, it can be concluded that tungsten oxide thin films are synthesized with a cubic WO3 structure. From field-emission scanning electron microscopy images, it can be seen that tungsten oxide thin films are made of crystal clusters which have grown vertically on the substrate surface. In addition, the results exhibit two asymmetric W4d5/2 and W4d7/2 peaks which can be assigned to W5+ and W4+ species, respectively. The mechanical results show that the hardness and the elastic modulus increase on raising the substrate temperature up to 600 °C. From the tribological performances, the friction coefficient of the tungsten oxide thin film decreases on increasing the substrate temperature.

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“…In this regard, the nitrogen ion implantation effect on the corrosion resistance of stainless steel has attracted considerable attention due to its technological and industrial implications [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Improving the Corrosion Resistance of Ni/SS Thin Films by Nitrogen Ion Implantation

et al. 2019

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N + ions were incorporated into nickel-coated 316 stainless steel (SS) at room temperature using different energies (10, 20, and 50 keV) and a fluence of 5 × 10 17 N + cm −2. The microstructure, surface morphology, and corrosion inhibition of the obtained materials were investigated and compared with the properties of the untreated steel using several analytical techniques. The X-ray diffraction patterns indicated the formation of nickel nitride with the ion implantation process. The surface morphology of the samples was studied by atomic force microscopy and statistical and multifractal analytical methods. Moreover, the potentiodynamic polarization test in 3.5% NaCl solution was carried out to evaluate the corrosion properties of the samples. These studies revealed that the generalized fractal dimension, Dq, is dependent on the ion implantation energy and the symmetry of the multifractal singularity spectra, f (α), which is related to the uniformity of the sample. In this manner, the lowest value was obtained for the sample prepared with the maximum ion implantation energy. Also, the increment of the implantation energy yields to increase the corrosion resistance. The simultaneous decrease of the corrosion current density (Icorr) and the increase of the corrosion potential observed with the N + ion-implantation indicate that treated samples are more resistant to corrosion than the untreated steel, and the highest corrosion protection was observed for the maximum implantation energy (50 keV). The correlation between corrosion resistance, structural and surface morphology induced by implantation is discussed.

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Formation of the third bodies of steel sliding against brass under lubricated conditions

Abstract: Highlights A tribometer based on on-line and RNT techniques performs sliding test. The formation mechanism of the third bodies subsurface zone is analyzed. MML is formed with dynamic oxidation reactions. DRX plays a key role in refinement of nano grains in GRZ.

Cited by 45 publications

References 36 publications

Tribological Behavior of Phenolic Resin-Based Friction Composites Filled with Graphite

Tribological Behavior of Phenolic Resin-Based Friction Composites Filled with Graphite

Structural and tribological properties of tungsten oxide thin film on a silicon substrate

Improving the Corrosion Resistance of Ni/SS Thin Films by Nitrogen Ion Implantation

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