| 摘要 |
PROBLEM TO BE SOLVED: To obtain a novel paste composition for aluminum soldering which composition gives a coating film easy in handling and plasticity processing, provides the soldered area (fillet) having a good appearance, keeps a good operation environment at a low cost and is applicable to a part having a complex shape. SOLUTION: The undried coating film is obtained by coating at least a part of an aluminum part with a composition containing following (a)-(c), the rest of which virtually consists of an organic solvent (The total amount does not exceed 100 wt.%.): (a) 10-70 wt.% of a metal powder for soldering, (b) 2-70 wt.% of a fluoride flux, and (c) 0.1-10 wt.% of a binder consisting of at least one selected from a butyl rubber, a petroleum resin and a polyethylene resin.
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