| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal based corrosion resistant material which has extremely high reliability and is used for a vessel, a reactor or piping for a corrosive liquid such as strong acid used for a chemical process. SOLUTION: In the corrosion resistant material, a valve metal is used as a base material, a platinum thin layer is formed on the surface of the base material, a platinum-iridium alloy layer is formed on the platinum thin layer, a metal iridium layer is formed on the platinum-iridium alloy layer, and an iridium oxide-containing layer is formed on the metal iridium layer. COPYRIGHT: (C)2005,JPO&NCIPI
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