PURPOSE: To manufacture a composite copper-carbon fiber material with superior bendability for a lead wire suitable for the connection of a silicon element, etc. by reducing the precentage of carbon fiber only at each part to be bent.
CONSTITUTION: In a composite copper-carbon fiber body (composite Cu-C body) 6 composed of warp 7 of copper plated carbon fiber with high electric anc heat conductivities along the longitudinal direction and of woof 8 of such fiber intersecting the warp 7, the percentage of the carbon fiber is regulated to about 50vol% to make the composite Cu-C body 6 almost equal to a silicon element in coefft. of thermal expansion, and a lead wire suitable for the connection of the silicon element, etc. is obtd. By reducing the percentage of the carbon fiber at each part to be bent to about 25W0vol% with thin copper wires 9 as only the woof 8 or both the warp 7 and woof 8, the bendability is increased. The composite Cu-C body 6 having partially copper packed layers 11 is coated with a copper layer 10, press-sintered, and cut suitably to obtain a lead wire.
NEMOTO TADASHI
KADOSE MASUO
SEKIJIMA TOKUO
KUNIYA KEIICHI
