Microstructure and Thermal Expansion of Hybrid - Copper Alloy Composites Reinforced with both Tungsten and Carbon Fibres

Tungsten as refractory material and high thermal conductive carbon fibres are promising candidates for production of copper matrix composites for high temperature applications. Three types of rod-like samples were prepared by gas pressure infiltration of different carbon/tungsten fibre preforms with...

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Veröffentlicht in:Materials science forum 2014-04, Vol.782, p.513-518
Hauptverfasser: Korab, Juraj, Kavecky, Stefan, Stefanik, Pavol, Izdinsky, Karol, Simancik, Frantisek, Dvorak, Tomas
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container_issue
container_start_page 513
container_title Materials science forum
container_volume 782
creator Korab, Juraj
Kavecky, Stefan
Stefanik, Pavol
Izdinsky, Karol
Simancik, Frantisek
Dvorak, Tomas
description Tungsten as refractory material and high thermal conductive carbon fibres are promising candidates for production of copper matrix composites for high temperature applications. Three types of rod-like samples were prepared by gas pressure infiltration of different carbon/tungsten fibre preforms with copper and/or copper alloy (Cu-0.5Cr) respectively. The fibres are aligned parallel to rod axis and were combined with the tungsten wire cloth. The microstructure of prepared hybrid composites was examined. The samples were thermally cycled 3 times up to 550 °C at a relatively high heating/cooling rate (10 K/min) to touch real condition in applications where high heat is formed during short time. The thermal expansion behaviour in radial direction was also analysed. Results show that a combination of both types of reinforcements in rod-shapes samples insures good protection against composite disintegration during high temperature thermal loading.
doi_str_mv 10.4028/www.scientific.net/MSF.782.513
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subjects Carbon
Carbon fibers
Carbon fibres
COMPOSITES
Copper
COPPER ALLOYS (40 TO 99.3 CU)
Copper base alloys
ELECTRICAL CONDUCTIVITY
FIBERS
Heating
MICROSTRUCTURES
REINFORCEMENT
Thermal expansion
THERMAL EXPANSION COEFFICIENT
Tungsten
title Microstructure and Thermal Expansion of Hybrid - Copper Alloy Composites Reinforced with both Tungsten and Carbon Fibres
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