Ultra-low temperature fabrication of copper carbon fibre composites by hydrothermal sintering for heat sinks with enhanced thermal efficiency

Mythili Prakasam, Adrien Morvan, Clio Azina, Loïc Constantin, Graziella Goglio, Alain Largeteau, Sylvie Bordère, Jean Marc Heintz, Yongfeng Lu, Jean François Silvain

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Fabrication of dense Cu/40CF metal matrix composites for heat sink applications by hydrothermal sintering at low temperature (P = 250 MPa; T = 265 °C, tsinter = 60 min; water quantity = 5 wt%) is reported. Study of various sintering parameters and their influence on densification are investigated. Comparative thermal and microstructural properties of hydrothermally sintered samples with the conventionally used uniaxial hot-pressing samples on Cu/40CF material show considerable improvements, namely increase of thermal conductivity (TC) and decrease of coefficient of thermal expansion (CTE). Hydrothermal sintering yields, through a dissolution/precipitation mechanism, quasi-isotropic thermal properties (TC = 300 W/mK and CTE = 8 10−6/K).

Original languageEnglish (US)
Article number105858
JournalComposites Part A: Applied Science and Manufacturing
Volume133
DOIs
StatePublished - Jun 2020

Keywords

  • Metal-matrix composites (MMCs)
  • Microstructures
  • Sintering
  • Thermal properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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