Tribo-electrification mechanisms for dissimilar metal pairs in dry severe wear process

Chang, Yuan‐Pin; Chiou, Yuang-Cherng; Lee, Rong-Tsong

doi:10.1016/j.wear.2007.03.008

Cited by 11 publications

(9 citation statements)

References 12 publications

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“…The above curves suggest that triboelectric charge density had no significant change versus contact area, except when rubbed with PA materials. According to previous studies [19,27], it is reasonable to believe that the relative sliding velocity between PTFE films and nonwoven materials could be an important influence on triboelectric charge density. As displayed in Figure 4d, when the sliding velocity between two dissimilar materials ranged from 2.9 to 6.6m/min, the surface charge densities on all PTFE films showed similar trend of variation and reached maxima at a velocity of 5.2m/min.…”

Section: Dependence Of Charge Density On Sliding Parametersmentioning

confidence: 95%

Triboelectric Effect of Polytetrafluoroethylene Fibers to Improve the Filtration Performance of Air-Purified Materials

Zhu

Huang

et al. 2018

Journal of Engineered Fibers and Fabrics

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The effect of triboelectric behavior of polytetrafluoroethylene (PTFE) on the filtration performance of common air-purified filters was studied. Variations of triboelectric charge density on PTFE films were analyzed by four typical parameters (cycle, applied load, contact area and velocity). The results demonstrated that the addition of PTFE fibers could significantly improve the filtration property of air-purified materials, owning to the accumulation of triboelectric static charge on the fibers.

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Section: Dependence Of Charge Density On Sliding Parametersmentioning

confidence: 95%

Triboelectric Effect of Polytetrafluoroethylene Fibers to Improve the Filtration Performance of Air-Purified Materials

Zhu

Huang

et al. 2018

Journal of Engineered Fibers and Fabrics

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“…In view of this, another method to measure the gas flowrate between dynamic friction surfaces was proposed. The authors had experimentally studied the dynamic tribo-electrification mechanisms in-depth [5][6][7][8][9][10]. The knowledge is then being applied to the study of adapting the dynamic triboelectrification mechanisms for use as a flow sensor herein.…”

Section: Introductionmentioning

confidence: 99%

“…Briefly, the main causes of tribo-electrification (measured as voltage) between dissimilar metal pairs are material transfer, residual heat, and frictional heating [9,10]. As gas flow removes the surface heat, the tribo-electrification contributed by both residual and frictional heat decreases with increasing gas flowrate as a consequence of forced convection.…”

Section: Introductionmentioning

confidence: 99%

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Another method of using dynamic tribo-electrification mechanisms for measuring gas flowrate

Chang

Chou

Horng

et al. 2007

Proceedings of the Institution of Mechanical Engineers, Part J:

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Another method of applying the dynamic tribo-electrification mechanisms in a gas flow sensor was studied experimentally in this paper. The gas used was nitrogen (N 2 ) and the tribo-electrification mechanisms were from the incompatible pair (Pb/Fe) and the partially compatible pair (Cu/Fe) in dry severe wear condition. Generally, flow sensors using the dynamic tribo-electrification mechanisms will be sensitive for material pairs with high thermal eletromotive force, low specific heat, and thermal conductivity. For the incompatible pairs, results from this study revealed that the method was adequate for measuring small flowrate and only a small amount of masses was transferred from the soft metals to the iron, forming a very thin layer with a friction coefficient of less than 0.3. Moreover, variations of the tribo-electrification and friction coefficient with sliding time appeared to be very stable, indicate that the effect of N 2 flowrate on tribo-electrification was significant. This effect of N 2 flowrate and the average interface temperature rise were particularly pronounced at a N 2 flowrate of less than 100 l/min. Finally, a model to represent the tribo-electrification mechanisms of various soft metals sliding on iron in N 2 gas flow was proposed.

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“…In experiments with metals in the 'dry severe wear' regime (e.g. Chang et al [10]), material transfer often seems to play a large part. However, in the absence of these mechanisms, would the charge transfer for sliding contact be the same as that for static contact?…”

Section: Introductionmentioning

confidence: 99%

The role of changing contact in sliding triboelectrification

Ireland¹

2007

J. Phys. D: Appl. Phys.

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Sliding contact usually seems to promote triboelectric charge transfer between solids, but the reasons for this are not always clear. Existing theories propose a number of explanations, including an increase in contact area due to interfacial deformation, frictional heating and direct material transfer. In the absence of these mechanisms, sliding may still promote charging by occasioning a changing contact pattern. This changing contact results in a greater cumulative surface area available for charging than static contact. A theoretical structure is introduced to characterize the effect of changing contact on perfectly insulating surfaces with instantaneous contact charging. This is extended to include non-instantaneous charging by means of a simple charging-time model.

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Tribo-electrification mechanisms for dissimilar metal pairs in dry severe wear process

Cited by 11 publications

References 12 publications

Triboelectric Effect of Polytetrafluoroethylene Fibers to Improve the Filtration Performance of Air-Purified Materials

Triboelectric Effect of Polytetrafluoroethylene Fibers to Improve the Filtration Performance of Air-Purified Materials

Another method of using dynamic tribo-electrification mechanisms for measuring gas flowrate

The role of changing contact in sliding triboelectrification

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