| 摘要 |
PROBLEM TO BE SOLVED: To provide solder powder of an Sn-Zn alloy which may be stored in the atmosphere, allows the use of devices used heretofore as they are and allows the implementation of a soldering process step in the atmosphere. SOLUTION: The solder powder of the Sn-Zn alloy of which the area >=50% of the surface is coated with a layer of an Sn alloy consisting essentially of Sn and containing at least one element of Ag, In, Ge, Cu or Bi.
|
