비수용액 전해질에서 전기도금한 니켈-TiO₂ 복합 도금층의표면 및 광분해 특성 연구
Surface and Photolytic Characteristics of Ni-TiO₂ Composite LayerElectro-Plated from Non-Aqueous Electrolyte
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Composite plating is a method of co-deposition of plating layer with metallic and/or non-metallic particles to improve the plating layer properties such as high corrosion resistance and photolysis of organic compounds. The properties of nickel-ceramic composite plating are significantly depend on the surface characteristics of co-deposited particles as well as the quantity in electrolyte. In this study, Ni-TiO₂ composite coating layer was produced by electrodeposition technique from non-aqueous electrolyte and its surface characteristics as well as photolytic properties were investigated. The amounts of immobilized TiO₂ particles increased with increasing the initial TiO₂ particles contents in the bath. Samples electroplated with the current density of 0.5 A/dm² showed the significantly improved homogeneous TiO₂particles distribution. The corrosion resistance of Ni-TiO₂ composite coating layer also improved with increasing the amounts of TiO₂ particles. Etched sample showed about 10% increased photolytic rate of organic matter compare to that of the non-etched.
Abstract
Composite plating is a method of co-deposition of plating layer with metallic and/or non-metallic particles to improve the plating layer properties such as high corrosion resistance and photolysis of organic compounds. The properties of nickel-ceramic composite plating are significantly depend on the surface characteristics of co-deposited particles as well as the quantity in electrolyte. In this study, Ni-TiO₂ composite coating layer was produced by electrodeposition technique from non-aqueous electrolyte and its surface characteristics as well as photolytic properties were investigated. The amounts of immobilized TiO₂ particles increased with increasing the initial TiO₂ particles contents in the bath. Samples electroplated with the current density of 0.5 A/dm² showed the significantly improved homogeneous TiO₂particles distribution. The corrosion resistance of Ni-TiO₂ composite coating layer also improved with increasing the amounts of TiO₂ particles. Etched sample showed about 10% increased photolytic rate of organic matter compare to that of the non-etched.
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