METHOD OF PRODUCING COPPER BASED LOW THERMAL EXPANSION HIGHLY HEAT CONDUCTIVE MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a method for easily producing a sintered material in which an Invar alloy is dispersed into a copper based matrix, in providing a material which has more satisfactory dimensional precision and excellent workability and can be plated with nickel without using expensive materials such as molybdenum and tungsten as in the prior art, in a copper based alloy material for a member requiring a low thermal expansion coefficient and high heat dissipation properties such as a heat sink. SOLUTION: A powdery mixture obtained by mixing, to copper powder, 5 to 60 mass% iron based alloy powder whose thermal expansion coefficient up to 100°C is≤6×10-6/K is subjected to compression molding to≥93% relative density, and is thereafter sintered at 400 to 600°C. COPYRIGHT: (C)2005,JPO&NCIPI