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

Maria Anisimova, Anna Knyazeva, Igor Sevostianov

Research output: Contribution to journalArticle

9 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

Fingerprint

Diamond
Aluminum
Diamonds
Thermodynamic properties
Composite materials
Thermal expansion
Thermal conductivity
Coatings
Volume fraction
Metals

Keywords

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

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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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.",
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AU - Sevostianov, Igor

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AB - 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.

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