| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a copper or a copper alloy material which does not require plating using Sn, Ni or the like, can suppress the increase of electric resistance at a joint part to the minimum and facilitates laser welding. <P>SOLUTION: The copper material or copper alloy material for laser welding is characterized in that a conductive coating layer having resistivity 100Ωcm or less is disposed on at least one side of a copper plate or copper alloy plate having a plate thickness of 0.05 to 10.0 mm. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
