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Hierarchically constructed metal foam/polymer composite for high thermal conductivity

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Title: Hierarchically constructed metal foam/polymer composite for high thermal conductivity
Authors: Burris, David L.1, Sawyer, W. Gregory wgsawyer@ufl.edu
Source: Wear. Feb2008, Vol. 264 Issue 3/4, p374-380. 7p.
Subjects: Aluminum, Light metals, Aluminum alloying, Foam
Abstract: Abstract: Most polymeric tribological components are inherently insulative, resulting in susceptibility to failure from frictional heating at the PV limit, which is typically reported as a product of the heat flux terms pressure (P) and sliding speed (V). This letter reports on the design of a tribological composite for increased thermal conductivity and PV limit. The control sample is an unfilled compositionally graded sample, consisting of a PEEK bulk with an integral PEEK/PTFE tribological solid lubricant surface layer. One composite sample is a compositionally graded PEEK bulk containing 10vol.% aluminum foam, and the other is a 10vol.% indium filled PEEK/PTFE bulk sample. Tribological experiments are conducted on a thrust washer tribometer instrumented with 13 thermocouples. At failure, the unfilled sample had a temperature rise of 170K. Under the same conditions, the aluminum and indium filled samples had temperature rises of 37K and 115K, respectively. They also had 250% and 40% higher PV limits, respectively than the unfilled sample. As designed, the continuity of the aluminum foam was found to be substantially more effective than the particle dispersion of the indium at dissipating thermal energy. [Copyright &y& Elsevier]
Copyright of Wear is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 27702381
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Hierarchically constructed metal foam/polymer composite for high thermal conductivity
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  Data: <searchLink fieldCode="AR" term="%22Burris%2C+David+L%2E%22">Burris, David L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sawyer%2C+W%2E+Gregory%22">Sawyer, W. Gregory</searchLink><i> wgsawyer@ufl.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Wear%22">Wear</searchLink>. Feb2008, Vol. 264 Issue 3/4, p374-380. 7p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Aluminum%22">Aluminum</searchLink><br /><searchLink fieldCode="DE" term="%22Light+metals%22">Light metals</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+alloying%22">Aluminum alloying</searchLink><br /><searchLink fieldCode="DE" term="%22Foam%22">Foam</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Most polymeric tribological components are inherently insulative, resulting in susceptibility to failure from frictional heating at the PV limit, which is typically reported as a product of the heat flux terms pressure (P) and sliding speed (V). This letter reports on the design of a tribological composite for increased thermal conductivity and PV limit. The control sample is an unfilled compositionally graded sample, consisting of a PEEK bulk with an integral PEEK/PTFE tribological solid lubricant surface layer. One composite sample is a compositionally graded PEEK bulk containing 10vol.% aluminum foam, and the other is a 10vol.% indium filled PEEK/PTFE bulk sample. Tribological experiments are conducted on a thrust washer tribometer instrumented with 13 thermocouples. At failure, the unfilled sample had a temperature rise of 170K. Under the same conditions, the aluminum and indium filled samples had temperature rises of 37K and 115K, respectively. They also had 250% and 40% higher PV limits, respectively than the unfilled sample. As designed, the continuity of the aluminum foam was found to be substantially more effective than the particle dispersion of the indium at dissipating thermal energy. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Wear is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.wear.2007.03.005
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 7
        StartPage: 374
    Subjects:
      – SubjectFull: Aluminum
        Type: general
      – SubjectFull: Light metals
        Type: general
      – SubjectFull: Aluminum alloying
        Type: general
      – SubjectFull: Foam
        Type: general
    Titles:
      – TitleFull: Hierarchically constructed metal foam/polymer composite for high thermal conductivity
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            NameFull: Burris, David L.
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            NameFull: Sawyer, W. Gregory
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              Text: Feb2008
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              Y: 2008
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              Value: 264
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              Value: 3/4
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            – TitleFull: Wear
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