硫酸塩浴よりの電着鉄の機械的性質

電着条件 (電着鉄の機械的性質に関する研究 (第1報))

抄録

The systematic researches on the mechanical properties of electrodeposited iron have scarcely been found. However, the above properties are very important factors for padding or being used for metallic materials. This paper reports the examination on the effects of pH, Fe⁺⁺ concentration, amounts of additives in the bath as well as the effects of bath temperature or current density on mechanical properties (such as hardness, tensile strength, elongation, reduction of area, and Erichsen value). The following sulfate bath was used for the examination.
FeSO₄⋅7H₂O……278g/l(2N)
pH……from 2.65 at the start to 2.95 at the end
Temperature of bath……75°C
Cathode current density……10A/dm²
(NH₂)CO, NH₄⁺, H₃BO₄, Mn⁺⁺, and Mg⁺⁺ were added to the bath as additives.
As the results, it was known that electrodeposited iron heated at 500°C indicated excellent mechanical properties over a wide range, some of which were almost the same as those of practical mild steel. In general, the largest elongation was obtained when the concentration of additive was 0.01N in the bath.