| 摘要 |
PROBLEM TO BE SOLVED: To provide a practical and stable iridium plating solution capable of keeping high cathode current density and cathode current efficiency for a long period and obtaining an excellent coating film and an iridium plating method. SOLUTION: The iridium plating solution contains a soluble iridium salt containing halogen, alcohols and preferably at least one of sulfate, nitrate and a hydrohalogenic acid salt. The iridium plating method is an electroplating method for forming an iridium coating film using the iridium plating solution in which alcohols are added or alcohols, sulfate, nitrate and hydrohalogenic acid salt are added in a plating bath provided a diaphragm between an anode and a cathode. COPYRIGHT: (C)2007,JPO&INPIT
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