Cu-Cr ALLOY AND Cu-Cr ALLOY PRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive alloy material for heat radiation having a coefficient of thermal expansion similar to that of composite material, high thermal conductivity similar to that of pure copper, and also having excellent machinability, to provide a production method therefor, and further to provide a production method using a powder sintering process, in addition to the conventional dissolution process, by which alloy materials for heat radiation with various shapes can be supplied at a low production cost in order to meet particularly the need of various shapes as those of alloy materials for heat radiation.;SOLUTION: The Cu-Cr alloy comprises, by mass, 0.3 to 80% C, and the balance Cu with inevitable impurities, and has a structure where a granular Cr phase having a major axis of ≤100 nm and an aspect ratio of 10 is precipitated into a Cu matrix excepting a Cr phase of ≥100 nm at a density of ≥20 pieces/μm².;COPYRIGHT: (C)2006,JPO&NCIPI