硫酸浴からのZn-Co-シリカ複合めっきに及ぼす界面活性剤の影響 [in Japanese] Surfactant Influence on Zu-Co-SiO_2 Composite Plating from Sulfate Solutions [in Japanese]
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In response to growing needs for improved corrosion resistance in the steel parts of automobiles and aircraft, plating with Zn-based alloys is being applied in place of pure Zn plating. Zn-based composite plating is also expected to exhibit better corrosion resistance than pure Zn or Zn-alloy plating due to the existence of dispersed particles.<br>Experiments were undertaken to determine the dependence of Zn-Co-SiO<sub>2</sub> composite plating electrodeposition and surface morphology from sulfate solutions on surfactants.<br>We found that the SiO<sub>2</sub> content of deposits without surfactants increased with SiO<sub>2</sub> concentration in the bath, but not for those with surfactants. The SiO<sub>2</sub> content depended on the SiO<sub>2</sub> concentration and the cathode current density. Despite identical plating conditions, surfactant addition is lowered the deposit's Co content and greatly affected the crystal structure and surface morphology.
- Jitsumu Hyomen Gijutsu
Jitsumu Hyomen Gijutsu 49(4), 407-411, 1998-04-01
The Surface Finishing Society of Japan