porous copper sintered material, porous copper composite part, porous copper sintered material production method and porous copper composite part production method

摘要

A porous copper sintered material (10) includes: a plurality of sintered copper fibers (11), wherein the copper fibers (11) are made of copper or copper alloy, and the diameter r of the copper fibers (11) is in the range of 0.02 mm or more and 1.0 mm or less and the l / r ratio of a length l of copper fibers to diameter r is in the range of 4 or more and 2500 or less. (11), redox layers (12) formed by redox treatment are provided on copper fiber surfaces (11, 11) and concavities and convexities are formed by redox layer (12) and each of the redox layers ( 12, 12) formed on each of the copper fibers (11) is integrally joined at a junction of the copper fibers (11).