| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface processing method for forming a stable oxide film on a nuclear power plant constitution member while reducing a waste liquid processing load at a low cost.SOLUTION: The surface processing method includes: a film forming step S20 to expose a nuclear power plant constitution member to a first temperature area while being in contact with a solution which contains peroxide iron ion to thereby form a primary oxide film over the surface of the nuclear power plant constitution member; and a film degeneration step S30, subsequently to the film forming step S20 to expose the nuclear power plant constitution member to a second temperature area higher than the first temperature area while being in contact with a solution containing zinc to thereby denature the primary oxide film into a secondary oxide film.SELECTED DRAWING: Figure 3 |
