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Article Dans Une Revue Composites Part A: Applied Science and Manufacturing Année : 2020

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

Résumé

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).

Domaines

Matériaux
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Dates et versions

hal-02506962 , version 1 (12-03-2020)

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Mythili Prakasam, Adrien Morvan, Clio Azina, Loïc Constantin, Graziella Goglio, et al.. Ultra-low temperature fabrication of copper carbon fibre composites by hydrothermal sintering for heat sinks with enhanced thermal efficiency. Composites Part A: Applied Science and Manufacturing, 2020, 133, pp.105858. ⟨10.1016/j.compositesa.2020.105858⟩. ⟨hal-02506962⟩
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