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Abstract

Metal matrix composites using a copper matrix for high thermal conductivity reinforced with silicon carbide long fibres for strength are being considered as heat sinks for future fusion reactors.
The SiC fibres were coated with the copper matrix by electroplating at room temperature within 8 h and the composite material was obtained by hot-isostatic pressing at 650 Degree Celsius and 100 MPa.
Single-fibre push-out tests indicate a very poor adhesion between the SiC fibres and the galvanic copper matrix. To improve the bonding a thin titanium interlayer was deposited on the fibres by magnetron sputtering and heat-treated at 550 Degree Celsius in vacuum to form TiC with the carbon surface of the SiC fibres. The bonding strength of these composites increased at least tenfold in relation to the material without titanium interlayer.

Additional information

Authors: BRENDEL A, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);POPESCU C, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);BOLT H, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);SCHURMANN H, German Aerospace Center (DLR), Cologne (DE)
Bibliographic Reference: An article published in: Surface and Coatings Technology, Volume 200, Issues 1-4, pp. 161-164 (2005)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1016/j.surfcoat.2005.02.018
Record Number: 200719180 / Last updated on: 2007-05-21
Category: PUBLICATION
Original language: en
Available languages: en
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