| 摘要 |
Nickel plating baths are improved by adding as brightening agent phenyl propiolic acid or the amide. Nickel chloride, sulphate or fluoborate may be used. Other additions referred to are wetting agents, acetyl acetone, saccharin, acetonyl acetone, diacetone alcohol, 2-butene-1,4-diol, methyl hydroxy butanone, sulphonated dibenzo thiophene dioxide, triphenyl methane, and nitrides both aliphatic and aromatic. Base metals specified are copper and copper alloys, iron, and steel. |
