Effect of laser shock peening without coating on fretting corrosion of copper contacts
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Changkyoo | - |
dc.contributor.author | Jung, Donghyuck | - |
dc.contributor.author | Chun, Eun-Joon | - |
dc.contributor.author | Ahn, Sanghoon | - |
dc.contributor.author | Jang, Ho | - |
dc.contributor.author | Kim, Yoon-Jun | - |
dc.date.accessioned | 2021-08-30T21:31:03Z | - |
dc.date.available | 2021-08-30T21:31:03Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2020-06-01 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/55082 | - |
dc.description.abstract | The effects of laser shock peening without coating (LSPwC) on the degradation of copper electrical contact was investigated. A Nd:YAG laser with laser energy densities of 5.3 and 10.6 GW/cm(2) was used for the LSPwC process. Surface hardness was enhanced from 55 HV to 110 and 120 HV for the laser shock-peened copper at 5.3 GW/cm(2) and 10.6 GW/cm(2), respectively. Moreover, near the copper surface, LSPwC introduced the max. compressive residual stress of 387.5 and 385.5 MPa for laser energy densities of 5.3 and 10.6 GW/cm(2), respectively. Electron backscatter diffraction and transmission electron microscopy revealed that LSPwC introduced dislocation rearrangement, deformation twins, and grain refinement. The laser shock-peened copper exhibited superior wear resistance compared with the base metal. During the fretting test, the wear loss of the base metal was 1.61 x 10(-3) mm(3), and this decreased to 0.99 x 10(-3) and 0.94 x 10(-3) mm(3) for the laser shock-peened copper at 5.3 and 10.6 GW/cm(2), respectively. Thus, the laser shock-peened copper maintained a low electrical contact resistance during the fretting test, resulting in electrical contact failure delay from 2790 cycles for the base metal to 5011 and 5210 cycles for laser shock-peened copper at 5.3 and 10.6 GW/cm(2), respectively. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | PLASTIC-DEFORMATION | - |
dc.subject | GRAIN-SIZE | - |
dc.subject | MICROSTRUCTURAL EVOLUTION | - |
dc.subject | WEAR BEHAVIOR | - |
dc.subject | RESISTANCE | - |
dc.subject | ALLOY | - |
dc.subject | FRICTION | - |
dc.subject | INITIATION | - |
dc.subject | HUMIDITY | - |
dc.subject | DEBRIS | - |
dc.title | Effect of laser shock peening without coating on fretting corrosion of copper contacts | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Jang, Ho | - |
dc.identifier.doi | 10.1016/j.apsusc.2020.145917 | - |
dc.identifier.scopusid | 2-s2.0-85080971867 | - |
dc.identifier.wosid | 000523185200027 | - |
dc.identifier.bibliographicCitation | APPLIED SURFACE SCIENCE, v.514 | - |
dc.relation.isPartOf | APPLIED SURFACE SCIENCE | - |
dc.citation.title | APPLIED SURFACE SCIENCE | - |
dc.citation.volume | 514 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | PLASTIC-DEFORMATION | - |
dc.subject.keywordPlus | GRAIN-SIZE | - |
dc.subject.keywordPlus | MICROSTRUCTURAL EVOLUTION | - |
dc.subject.keywordPlus | WEAR BEHAVIOR | - |
dc.subject.keywordPlus | RESISTANCE | - |
dc.subject.keywordPlus | ALLOY | - |
dc.subject.keywordPlus | FRICTION | - |
dc.subject.keywordPlus | INITIATION | - |
dc.subject.keywordPlus | HUMIDITY | - |
dc.subject.keywordPlus | DEBRIS | - |
dc.subject.keywordAuthor | Laser shock peening without coating | - |
dc.subject.keywordAuthor | Copper | - |
dc.subject.keywordAuthor | Grain refinement | - |
dc.subject.keywordAuthor | Compressive residual stress | - |
dc.subject.keywordAuthor | Fretting corrosion | - |
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