VEILLERE, Amélie; HEINTZ, Jean-Marc; CHANDRA, Namas; DOUIN, Joël; LAHAYE, Michel; LALET, Grégory; VINCENT, Cécile; SILVAIN, Jean-François

doi:10.1016/j.materresbull.2011.11.004

Metadatos

Mostrar el registro completo del ítem

Licencia de uso del documento

VEILLERE, Amélie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

HEINTZ, Jean-Marc
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CHANDRA, Namas
Department of Mechanical and Materials Engineering

Idioma

Article de revue

Este ítem está publicado en

Materials Research Bulletin. 2012, vol. 47, n° 2, p. 375-380

Elsevier

Resumen en inglés

This study focuses on the fabrication, for power electronics applications, of adaptive heat sink material using copper alloys/carbon fibers (CF) composites. In order to obtain composite material with good thermal conductivity and a coefficient of thermal expansion close to the ceramic substrate, it is necessary to have a strong matrix/reinforcement bond. Since there is no reaction between copper and carbon, a carbide element (chromium or boron) is added to the copper matrix to create a strong chemical bond. Composite materials (Cu-B/CF and Cu-Cr/CF) have been produced by a powder metallurgy process followed by an annealing treatment in order to create the carbide at the interphase. Chemical (Electron Probe Micro-Analysis, Auger Electron Spectroscopy) and microstructural (Scanning and Transmission Electron Microscopies) techniques were used to study the location of the alloying element and the carbide formation before and after diffusion. Finally, the thermo-mechanical properties have been measured and a promising composite material with a coefficient of thermal expansion 25% lower than a classic copper/carbon heat sink has been obtained.< Leer menos

Palabras clave en inglés

Composites

Interfaces

Thermal conductivity

Thermal expansion

Microstructure

Metadatos

Licencia de uso del documento

Influence of the interface structure on the thermo-mechanical properties of Cu-X (X = Cr or B)/carbon fiber composites

Idioma

Este ítem está publicado en

Resumen en inglés

Palabras clave en inglés

DOI

Orígen

Centros de investigación