The transition mechanisms of tribo-electrification for self-mated metals in dry severe wear process

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

doi:10.1016/j.wear.2004.01.001

Cited by 25 publications

(22 citation statements)

References 9 publications

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“…(ii) Ion transfer dominates tribocharging in species having both mobile and fixed ions; 38 the validity of this mechanism has been strongly supported by the ability to synthesize materials that have predesigned tribocharging properties. 38,[41][42] (iii) Material transfer may be important in some systems, such as metals sliding under dry wear conditions 43 or polymer-polymer contacts. 44 (iv) Differential adsorption of hydroxide and hydronium ions from a thin film of water formed at contact sites 38 can explain the correlation between tribocharging and electrochemical material properties such as the zeta function, and applies to both ionic and non-ionic insulators; the discovery that tribocharging still occurs, 6 but is less effective, in the absence of water, 44 indicates that this mechanism might only contribute, rather than dominate, tribocharging.…”

Section: Tribocharging: Materials and Mechanismsmentioning

confidence: 99%

A simple two-dimensional model system to study electrostatic-self-assembly

et al. 2012

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This paper surveys the variables controlling the lattice structure and charge in macroscopic Coulombic crystals made from electrically charged, millimeter-sized polymer objects (spheres, cubes, and cylinders). Mechanical agitation of these objects inside planar, bounded containers caused them to charge electrically through contact electrification, and to selfassemble. The processes of electrification and self-assembly, and the characteristics of the assemblies, depended on the type of motion used for agitation, on the type of materials used for the objects and the dish, on the size and shape of the objects and the dish, and on the number of objects. Each of the three different materials in the system (of the dish and of the two types of spheres) influenced the electrification. Three classes of structures formed by self-assembly, depending on the experimental conditions: two-dimensional lattices, onedimensional chains, and zero-dimensional 'rosettes'. The lattices were characterized by their structure (disordered, square, rhombic, or hexagonal) and by the electrical charges of individual objects; the whole lattices were approximately electrically neutral. The lattices observed in this study were qualitatively different from ionic crystals; the charge of objects had practically continuous values which changed during agitation and self-assembly, and depended on experimental conditions which included the lattice structure itself. The relationship between charge and structure led to the coexistence of regions with different lattice structures within the same assembly, and to transformations between different lattice structures during agitation.2

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Section: Tribocharging: Materials and Mechanismsmentioning

confidence: 99%

A simple two-dimensional model system to study electrostatic-self-assembly

et al. 2012

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“…The reciprocating friction tester with a measuring system was described in detail in the previous papers [2][3][4]. In this series of experiments, Iron (Fe) was selected as the material of the plate specimen while five pure soft metals, namely, lead (Pb), silver (Ag), zinc (Zn), aluminum (Al), and copper (Cu) were selected as the materials of the pin specimen.…”

Section: Experimental Apparatus and Proceduresmentioning

confidence: 99%

“…3 and 4 that the tribo-electrification accumulates with sliding distance until saturation for dissimilar metal pairs but not for self-mated metal pairs [2][3][4]. Generally, the Seebeck effect (thermal EMF), in addition to the influence of material transfer, has to be considered for dissimilar metal pairs.…”

Section: Friction Cyclementioning

confidence: 99%

“…Further, to eliminate the effect of the surface film (such as oxide and nitride) on the tribo-electrification mechanism, the condition of dry severe wear was also enforced. Experimental results had showed that material transfer was the main cause of tribo-electrification for self-mated metals, and it significantly influenced both the magnitude and the polarity of the tribo-electrification [4].…”

Section: Introductionmentioning

confidence: 99%

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

Chang

Chiou

Lee

2008

Wear

Self Cite

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“…The friction process is not only accompanied by heat and electricity [1,2], but also the magnetic field. Tribo-magnetization phenomenon has been realized and used by people with a history of several thousand years, but studies about the mechanism of tribomagnetization are very limited.…”

Section: Introductionmentioning

confidence: 99%