| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing a plated material having both high heat-resistance and good insertability/extractability. SOLUTION: An undercoating 2 of any one of metals belonging to group 4, group 5, group 6, group 7, group 8, group 9 or group 10 of the periodic table or an alloy containing any one of those metals as a main component, an intermediate coating 3 of Cu or a Cu alloy, and a top-coating 4 of Sn or an Sn alloy are formed on a surface of an electrically conductive base 1 in this order. The thickness of the top-coating 4 is 1.9 times or more the thickness of the intermediate coating 3. COPYRIGHT: (C)2007,JPO&INPIT
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