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Article: Nanoscale fast relaxation events in polyethylene
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TitleNanoscale fast relaxation events in polyethylene
 
AuthorsLi, J1 2
Ngan, AHW1
 
KeywordsCreep
High-temperature deformation
Nanoindentation
Polymers
 
Issue Date2010
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/scriptamat
 
CitationScripta Materialia, 2010, v. 62 n. 7, p. 488-491 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.scriptamat.2009.12.022
 
AbstractDiscrete relaxation events on the submicron scale were observed during nanoindentation on polyethylene. The frequency with which these events occur increases as the crystallinity of the polyethylene increases, but the effect saturates at high crystallization levels. At a given crystallinity, the occurrence frequency decreases as temperature increases, due possibly to the enhancement of viscous flow as a competing stress relaxation process. The emission rate of the discrete relaxation events also increases with temperature, exhibiting an activation energy of about 0.22 eV. © 2009 Acta Materialia Inc.
 
ISSN1359-6462
2013 Impact Factor: 2.968
2013 SCImago Journal Rankings: 2.706
 
DOIhttp://dx.doi.org/10.1016/j.scriptamat.2009.12.022
 
ISI Accession Number IDWOS:000274888600015
Funding AgencyGrant Number
Research Grants CouncilHKU7156/08E
University Grants CommitteeSEG-HKU06
Croucher Foundation
Funding Information:

The work described in this paper was supported by grants from the Research Grants Council (Project No. HKU7156/08E), as well as from the University Grants Committee (Project No. SEG-HKU06) of the Hong Kong Special Administration Region, China. A.H.W.N. would like to acknowledge support in the form of a Senior Research Fellowship from the Croucher Foundation. J.L. is grateful to Dr. Tang Bin for financial support and technical assistance.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorLi, J
 
dc.contributor.authorNgan, AHW
 
dc.date.accessioned2010-09-06T07:12:33Z
 
dc.date.available2010-09-06T07:12:33Z
 
dc.date.issued2010
 
dc.description.abstractDiscrete relaxation events on the submicron scale were observed during nanoindentation on polyethylene. The frequency with which these events occur increases as the crystallinity of the polyethylene increases, but the effect saturates at high crystallization levels. At a given crystallinity, the occurrence frequency decreases as temperature increases, due possibly to the enhancement of viscous flow as a competing stress relaxation process. The emission rate of the discrete relaxation events also increases with temperature, exhibiting an activation energy of about 0.22 eV. © 2009 Acta Materialia Inc.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationScripta Materialia, 2010, v. 62 n. 7, p. 488-491 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.scriptamat.2009.12.022
 
dc.identifier.citeulike6408351
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.scriptamat.2009.12.022
 
dc.identifier.epage491
 
dc.identifier.hkuros170079
 
dc.identifier.isiWOS:000274888600015
Funding AgencyGrant Number
Research Grants CouncilHKU7156/08E
University Grants CommitteeSEG-HKU06
Croucher Foundation
Funding Information:

The work described in this paper was supported by grants from the Research Grants Council (Project No. HKU7156/08E), as well as from the University Grants Committee (Project No. SEG-HKU06) of the Hong Kong Special Administration Region, China. A.H.W.N. would like to acknowledge support in the form of a Senior Research Fellowship from the Croucher Foundation. J.L. is grateful to Dr. Tang Bin for financial support and technical assistance.

 
dc.identifier.issn1359-6462
2013 Impact Factor: 2.968
2013 SCImago Journal Rankings: 2.706
 
dc.identifier.issue7
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-74749096069
 
dc.identifier.spage488
 
dc.identifier.urihttp://hdl.handle.net/10722/75578
 
dc.identifier.volume62
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/scriptamat
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofScripta Materialia
 
dc.relation.referencesReferences in Scopus
 
dc.subjectCreep
 
dc.subjectHigh-temperature deformation
 
dc.subjectNanoindentation
 
dc.subjectPolymers
 
dc.titleNanoscale fast relaxation events in polyethylene
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. Zhejiang University