| 摘要 |
PROBLEM TO BE SOLVED: To suppress the aggregation of carbon fine powder and to obtain a satisfactory sintered state in a material for an electrical contact and its production method. SOLUTION: The production method comprises: a stage (S1) where the main material essentially consisting of silver powder and carbon fine powder are mixed by mechanical alloying, so as to be composite powder; a stage (S2) where the composite powder is compacted, so as to be a compact; and a stage (S3) where the compact is sintered. In particular, as the carbon fine powder is fullerene such as carbon nanofiber is used. In this way, the carbon fine powder can be mixed into the silver powder in a state of being uniformly dispersed, thus the generation of an aggregated body in the carbon fine powder and deterioration in its state upon the sintering can be suppressed, and further, its workability after the compacting can be satisfactorily maintained as well. COPYRIGHT: (C)2007,JPO&INPIT |
