Morphological Features of the Copper Surface Layer under Sliding with High Density Electric Current
| Parent link: | AIP Conference Proceedings Vol. 1683 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures.— 2015.— [020052, 5 p.] |
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| Korporativní autor: | |
| Další autoři: | , , , |
| Shrnutí: | Title screen Conductivity and wear intensity of copper under the influence of dry friction and electric current with contact density higher 100 A/cm{2} are presented. It is shown that an increase in hardness and heat outflow from a friction zone leads to the reduction of wear intensity and current contact density increase corresponding to the beginning of catastrophic wear. Structural changes, such as the formation of FeO oxide and [alfa]-Fe particles in the copper surface layer, have also been found. It is observed that a worn surface is deformed according to a viscous liquid mechanism. Such singularity is explained in terms of appearance of high-excited atomic states in deforming micro-volumes near contact spots that lead to easy stress relaxation by local plastic shears in the vicinity of stress concentrators. In common this effect allows to achieve high wear resistance. Режим доступа: по договору с организацией-держателем ресурса |
| Vydáno: |
2015
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| Témata: | |
| On-line přístup: | http://dx.doi.org/10.1063/1.4932742 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644889 |
| Shrnutí: | Title screen Conductivity and wear intensity of copper under the influence of dry friction and electric current with contact density higher 100 A/cm{2} are presented. It is shown that an increase in hardness and heat outflow from a friction zone leads to the reduction of wear intensity and current contact density increase corresponding to the beginning of catastrophic wear. Structural changes, such as the formation of FeO oxide and [alfa]-Fe particles in the copper surface layer, have also been found. It is observed that a worn surface is deformed according to a viscous liquid mechanism. Such singularity is explained in terms of appearance of high-excited atomic states in deforming micro-volumes near contact spots that lead to easy stress relaxation by local plastic shears in the vicinity of stress concentrators. In common this effect allows to achieve high wear resistance. Режим доступа: по договору с организацией-держателем ресурса |
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| DOI: | 10.1063/1.4932742 |