COATED SOLDER WIRE AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method by which a coated solder wire having a dense coating film of polysiloxane uniformly formed over the entire surface of the solder wire can be obtained efficiently, through a single process.SOLUTION: A method of manufacturing a coated solder wire is provided that comprises: a radicalization step of mixing a reactant gas transformed into a plasma at atmospheric pressure and an organosilicon compound introduced via carrier gas, and radicalizing the organosilicon compound to form the radicalized organosilicon compound; a reaction area formation step of forming a reaction area which is demarcated by a spiral gas flow and in which the radicalized organosilicon compound is uniformly dispersed; and a coating step of transporting a solder wire into the reaction area, and reacting metal at the solder wire surface with the radicalized organosilicon compound, thereby forming a coating film of polysiloxane having a thickness of 4 to 200 nm on the solder wire surface. A coated solder wire obtained by the method is also provided.SELECTED DRAWING: Figure 1