Chemical nickeling phosphorus alloy plating liquid and coating process thereof

Abstract

The invention relates to a chemical Ni-P alloy-plating liquid and its process. The liquid is stable, works fast, has long service life, and does not contain chromium. So, it was widely used in industry. The Ni-P alloy coating is of fine corrosion-proof, containing 10-30g nickel sulfate, 20-40g sodium hypophosphite, 5-20g sodium acetate, 12-60g complexing agent and 0.002-0.01g complex stabilizer, with pH value of 4.5-5.0.

Description

technical field

[0001] The invention relates to a plating solution and a plating process thereof, in particular to an electroless nickel-phosphorus alloy plating solution and a plating process thereof. Background technique

[0002] In 1946, A.Brenner and G.Riddel successfully prepared the self-catalyzed nickel-phosphorus alloy coating for the first time [see "Electroless Nickel-based Alloy Theory and Technology" Harbin Institute of Technology Press, 2000], The research and application of electroless nickel-phosphorus alloy plating has been greatly developed. The amorphous nickel-phosphorus alloy coating has good corrosion resistance and wear resistance, and the thickness of the coating is very uniform without obvious edge effects. The bonding force between the coating and the substrate is better than that of electroplating. [See "Electroless Plating Theory and Practice" National Defense Industry Press, 2000]

[0003] The core of electroless nickel-phosphorus alloy plating ...