Nickel is often used in electroplating because of its good corrosion resistance. Nickel cadmium batteries contain nickel.

Mainly used in alloys (formulations) (such as nickel steel and nickel silver) and as catalysts (such as raney nickel, especially for hydrogenation), which can be used to make money. Electroplating on other metals can prevent rust.

Mainly used for manufacturing stainless steel and other corrosion-resistant alloys, such as nickel steel, nickel-chromium steel and various non-ferrous metal alloys. Copper-nickel alloy with high nickel content is not easy to corrode. It is also used as a hydrogenation catalyst and in the preparation of ceramic products, special chemical utensils, electronic circuits, green glass and nickel compounds.

Extended data:

I. Physical characteristics

Good ductility and moderate hardness. ?

Nickel is a silvery white metal with magnetism and good plasticity. Nickel has good corrosion resistance, almost silvery white, hard, malleable, ferromagnetic, highly polished and corrosion-resistant. Soluble in nitric acid, green. Mainly used in alloys (such as nickel steel and nickel silver) and as catalysts (such as raney nickel, especially as hydrogenation catalysts).

Second, the chemical properties

Nickel is insoluble in water and forms a dense oxide film on the surface in humid air at room temperature, which can prevent the further oxidation of bulk metal. Nickel can burn in pure oxygen, giving off dazzling white light. Similarly, nickel can also be burned in chlorine and fluorine. There is no reaction to oxidant solution including nitric acid. Nickel is a medium-strength reducing agent.

Nickel hydrochloric acid, sulfuric acid, organic acid and alkaline solution corrode nickel very slowly. Nickel dissolves slowly in dilute nitric acid. Fuming nitric acid can passivate the surface of nickel and has corrosion resistance. Nickel, like platinum and palladium, can absorb a lot of hydrogen in the passivation process, and the smaller the particles, the greater the absorption. The important salts of nickel are nickel sulfate and nickel chloride.

Baidu Encyclopedia-Nickel