Metal/sulfur-containing nickel composite material as well as preparation method and application thereof

Abstract

The invention discloses a metal / sulfur-containing nickel composite material as well as a preparation method and application thereof. The preparation method comprises the steps that at least an anode,a cathode and an electroplating solution jointly construct an electrochemical reaction system, the cathode adopts a metal wire and / or a metal sheet, and the electroplating solution is a mixed solutionat least containing nickel salt, a sulfur-carrying agent, a buffering agent and water; and the electrochemical reaction system is electrified for electroplating to obtain the metal / sulfur-containingnickel composite material of which the inner layer is metal and the outer layer is a sulfur-containing nickel material. The metal wire or the metal sheet is adopted as the cathode, the labor cost is reduced, meanwhile, the product is a sulfur-containing nickel short rod or block product, and due to the potential difference between the metal wire or the metal sheet and the sulfur-containing nickelouter layer, the metal wire or the metal sheet has better solubility and can serve as a high-solubility nickel anode; and the method is used in the fields of diamond wire electroplating, nickel aminosulfonate electroplating, electronic product electroplating and the like, and improves the limited current density and the production efficiency.

Description

technical field [0001] The invention relates to a metal / sulfur-containing nickel composite material, in particular to a highly active anode metal / sulfur-containing nickel composite material used in electroplating nickel, a preparation method and application thereof, and belongs to the technical field of electroplating. Background technique [0002] Nickel is an important resource of the country, and the nickel used for electroplating nickel anode accounts for about 8% of the nickel consumption in my country. Although the reserves of nickel in the earth's crust are very rich, reaching more than 89 million tons, my country is a nickel-poor country with reserves of only about 2.8 million tons, while the annual nickel consumption is about 1.2 million tons. One of the most important nickel resources is electroplating. Ordinary nickel has low solubility due to its high passivation. When it is used for electroplating anodes, it has defects such as relatively low utilization rate, ...

AI Technical Summary

Problems solved by technology

However, the addition of chloride ions has the following disadvantages: (1) the stress of the coating increases, which leads to a decrease in the bonding force between the coating and the substrate; (2) the hardness and stress are large, resulting in difficulties in post-processing; (3) the obtained coating has relatively low corrosion resistance. The chlorine-free plating solution is much lower; (4) its solubility is still insufficient when used for high-speed electroplating such as diamond wire

[0005] However, there are several problems in this process, such as: circular sulfur-containing nickel growth area and product binding force; product removal is very time-consuming and laborious; product removal may damage the shielding layer, thereby affecting the repeated use of the substrate; At the junction of the insulating layer and the circular growth area, due to the interface effect, hydrogen is easy to evolve, resulting in many pores in the product, which affects the quality, etc.