압력용기 클래드 보수용 전해니켈도금 인자 관계 연구
Variables of Electrolytic Nickel Plating for RPV Cladding Repair
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Pure nickel with a thickness of 1 mm was plated on type 304 stainless steels and low alloy steels (JISG3131 SPHC) by electrolytic plating method in a circulating plating bath. Plating performance, mechanicalproperties, and surface characteristics were evaluated in terms of pretreatment process, anode material, pH,current density, and flow rate of the plating solution. Addition of hydrochloric acid during pre-treatmentprocess improved the adhesion performance of plating. To improve plating efficiency, it is desirable touse S-nickel rather than electrolytic nickel. The use of S-nickel was also confirmed to be desirable formaintaining the pH and concentration of the plated solution. The defect of the plating using S-nickel anodeproduced pit on the surface. However, it is believed that proper control can be obtained by increasingthe flow rate. Internal stress and hardness values of electrolytic nickel plating according to current densityneed to be carried out with further studies.
Abstract
Pure nickel with a thickness of 1 mm was plated on type 304 stainless steels and low alloy steels (JISG3131 SPHC) by electrolytic plating method in a circulating plating bath. Plating performance, mechanicalproperties, and surface characteristics were evaluated in terms of pretreatment process, anode material, pH,current density, and flow rate of the plating solution. Addition of hydrochloric acid during pre-treatmentprocess improved the adhesion performance of plating. To improve plating efficiency, it is desirable touse S-nickel rather than electrolytic nickel. The use of S-nickel was also confirmed to be desirable formaintaining the pH and concentration of the plated solution. The defect of the plating using S-nickel anodeproduced pit on the surface. However, it is believed that proper control can be obtained by increasingthe flow rate. Internal stress and hardness values of electrolytic nickel plating according to current densityneed to be carried out with further studies.
참고문헌 (5)
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