| 摘要 |
PURPOSE:To effectually prevent the corrosion of porous nickel base plate by immersing the base plate in a wet oxidizer prior to imprenating the base plate with a nickel salt. CONSTITUTION:First, a porous nickel base plate is sufficiently washed with water and then immersed in a 31% H2O2 solution at ordinary temperature for one minute. Then, the base plate is washed with water to remove the residual H2O2 before the washed plate is dried. The thus treated base plate is then immersed in a nickel salt solution to impregnate the base plate with the nickel salt. Next, the impregnated base plate is dried and then immersed in an alkali bath to convert the nickel salt into nickel hydroxide. After that, the base plate is washed with water to clean it and then the cleaned base plate is dried. The above operations are repeated several times. Accordingly, it is possible to form a homogeneous oxidized film over the base plate. |
