Surface analysis study of electrical-arc-induced wear

Bhushan, Bharat; Davis, Robert E.

doi:10.1016/0040-6090(83)90499-6

Cited by 11 publications

(6 citation statements)

References 14 publications

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“…There are also extensive solidified microstructures inside the chipping pits in the marked area, Figure 8b. Based on the above discussion, the aggregation can cause the electro erosion, and that induced the severe wear [5].…”

Section: Analysis Of the Microstructurementioning

confidence: 94%

“…The behavior of electrical-arc-induced wear between 303 stainless steel and bearing made of 52100 steel had been reported [4,5]. This research revealed that arcing is conducted when a high electrical potential is present across a thin air film in a sliding process.…”

Section: Introductionmentioning

confidence: 93%

“…The abrasive particles penetrated the matrix under load, and then ploughed and peeled the matrix where the furrows were produced. There were the fewer gaps between the contact surfaces less discharge usually [5]. In the presence of an air film, the discharge resulted in electrical erosion across the friction pair.…”

Section: Analysis Of Wear Mechanismmentioning

confidence: 99%

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Analysis of abnormal wear on a certain type of CRH380 high‐speed railway grounding brush

Wang

Liu

Che

et al. 2020

Materialwissenschaft Werkst

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This paper investigated the causes of premature wear of grounding brushes in high-speed train which was less than 40 % of design service life. The grounding brushes were analyzed from the material composition, microstructure and mechanical property under different wear conditions. The results indicated that their material composition and microstructure were basically identical, and the phase compositions of the four samples were mainly copper (Cu) and carbon (C). There were no obvious defects in the structure. The load differences will give rise to vibration of the friction pairs and lead to electrical erosion on the worn surface. The electrical erosion produced oxides and fused hard particles as well as caused abrasive wear. The test results also indicated that the spring-induced gap across the contact surfaces resulted in electrical erosion. Keywords:High-speed train / grounding brush / abrasive wear / spring-induced gap / electrical erosion Schlüsselwörter: Hochgeschwindigkeitszug / Erdungsbürste / abrasiver Verschleiß / federinduzierter Spalt / Elektroerosion

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Section: Analysis Of the Microstructurementioning

confidence: 94%

Section: Introductionmentioning

confidence: 93%

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Analysis of abnormal wear on a certain type of CRH380 high‐speed railway grounding brush

Wang

Liu

Che

et al. 2020

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…This heating results in considerable melting and subsequent resolidification, corrosion, hardness changes, and other phase changes, and even in the direct ablation of material (Guile and Juttner, 1980;Bhushan and Davis, 1983). During arcing, a relatively high-power density (on the order of 1 kW/mm 2 ) occurs over a very short period of time (on the order of 100 μs).…”

Section: Electrical-arc-induced Wearmentioning

confidence: 99%

“…During arcing, a relatively high-power density (on the order of 1 kW/mm 2 ) occurs over a very short period of time (on the order of 100 μs). Arcing can thus initiate several modes of wear resulting in catastrophic failures in electrical machinery (Bhushan and Davis, 1983). Heating is caused by the Joule effect due to the high power density and by ion bombardment from the plasma above the surface.…”

Section: Electrical-arc-induced Wearmentioning

confidence: 99%