Solid-liquid co-existent phase process: Towards fully dense and thermally efficient Cu/C composite materials

Clio Azina, Jérôme Roger, Anne Joulain, Vincent Mauchamp, Bruno Mortaigne, Yongfeng Lu, Jean François Silvain

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Metal matrix composites are currently being investigated for thermal management applications. In the case of a copper/carbon (Cu/C) composite system, a particular issue is the lack of affinity between the Cu matrix and the C reinforcements. Titanium-alloyed Cu (Cu-Ti) powders were introduced in a Cu/C powder mixture and sintered under load at a temperature at which the Cu-Ti powders became liquid, while the rest of the Cu and C remained solid. Fully dense materials were obtained (porosity of less than 5%). The creation of regular and homogeneous interphases was confirmed. All Ti reacted with the carbon, hence purifying the Cu matrix. Thermal conductivities were enhanced as compared with the Cu/C composites without interphase. The chemical analyses are in agreement with thermodynamic simulations carried out to predict the phase transformation during the sintering process.

Original languageEnglish (US)
Pages (from-to)292-300
Number of pages9
JournalJournal of Alloys and Compounds
Volume738
DOIs
StatePublished - Mar 25 2018

Keywords

  • CALPHAD
  • Heat conduction
  • Metal matrix composites
  • Solid-liquid co-existent phase process

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Solid-liquid co-existent phase process: Towards fully dense and thermally efficient Cu/C composite materials'. Together they form a unique fingerprint.

  • Cite this