Effective thermal properties of an aluminum matrix composite with coated diamond inhomogeneities

Maria Anisimova, Anna Knyazeva, Igor Sevostianov

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The paper focuses on the calculation of the effective thermal properties of aluminum matrix composites containing diamond particles. We propose a model explaining non-monotonic behavior of the overall thermal conductivity (TC) and monotonic behavior of the thermal expansion coefficient (CTE) at high volume fraction of diamond particles. The model also accounts for the effect of particle coatings that increases the interfacial bonding between the diamond particles and metal matrix. Effect of the coating is modeled using differential method of replacing an inhomogeneous inclusion by an equivalent homogeneous one. The effective properties are calculated using Maxwell homogenization scheme and compared with experimental data. We also establish and verify experimentally cross-property connection between thermal conductivity and thermal expansion coefficient for Al\diamond composites.

Original languageEnglish
Pages (from-to)142-154
Number of pages13
JournalInternational Journal of Engineering Science
Volume106
DOIs
Publication statusPublished - 1 Sep 2016

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Keywords

  • Cross property connections
  • Maxwell homogenization scheme
  • Metal-diamond composite
  • Thermal conductivity
  • Thermal expansion coefficient

ASJC Scopus subject areas

  • Engineering(all)

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