PASSIVATOR, SURFACE PASSIVATION PROCESS FOR METAL-PLATED PART AND METAL WORKPIECE

摘要

A passivator and a surface passivation process for a metal-plated part. The passivator comprises, per 1000 parts by weight thereof, the following components in parts by weight: 2-10 parts of sodium molybdate, 0.5-3 parts of potassium dihydrogen phosphate, 2-10 parts of potassium nitrate, 1-5 parts of acetic acid and the balance of distilled water. The protective film formed by the above passivator provides strong passivation, anti-oxidation and anti-corrosion capabilities to metal and plating, forms a transparent rigid protective film on the surface of the plating when dried, which is temperature-, salt- and corrosion-resistant and can be widely applied to a variety of metal-plated parts, and is particularly beneficial to passivation of a nickel-plated layer.