Effect of GNPs content on thermal and mechanical properties of a novel hybrid Cu-Al2O3/GNPs coated Ag nanocomposite

A. Wagih, A. Abu-Oqail, A. Fathy

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

Hybrid Cu-Al2O3/GNPs coated Ag nanocomposites with GNPs content of 0%, 0.3%, 0.6%, 0.9% and 1.2% were successfully manufactured with improved mechanical and good electrical and thermal properties. Compressive strength, hardness, thermal and electrical properties were studied. The results indicated that compressive strength and hardness are significantly improved by increasing GNPs achieving 88.1% and 55.2% improvement, respectively. This improvement is attributed to the remarkable mechanical strength of GNPs, the reduction of grain size and the precipitation of GNPs on the grain boundaries of Cu. However, the coefficient of thermal expansion and electrical conductivity were reduced. Interestingly, increasing GNPs content has almost negligible effect of the thermal conductivity, at which the thermal conductivity is slightly reduced by a factor of 5% only by increasing GNPs content to 1.2%. These results highlight the advantage of reinforcing Cu-Al2O3 nanocomposites by GNPs coated Ag for manufacturing hybrid nanocomposite with improved mechanical properties and good thermal conductivity.
Original languageEnglish (US)
Pages (from-to)1115-1124
Number of pages10
JournalCeramics International
Volume45
Issue number1
DOIs
StatePublished - Jan 1 2019
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials

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