| 摘要 |
PURPOSE:To reduce clogging of pores through adhesion at the surface and increase amount of active substance for impregnation by utilizing immersing solution mixing the specified amount of cadmium acetate into cadmium nitric acid bath at the time of chemical impregnation of sintered type negative plate. CONSTITUTION:An immersing solution mixing cadmium acetate of 20% or more in the cadmium nitric acid bath is used at the time of chemical impregnation of sintered type negative plate. Thereby, clogging of pores at the surface of sintered body by adhesion at the surface can be reduced and amount of impregnation of active substance on the sintered type negative plate can be increased. |
