Fiernikel

Fiernikel is a term sometimes used in informal contexts to refer to nickel, a chemical element with the symbol Ni and atomic number 28. Nickel is a hard, silvery-white metal that is resistant to corrosion. It is a naturally occurring element found in the Earth's crust and is also present in meteorites.

Historically, nickel was first identified as a distinct element in the mid-18th century. It gained importance due to its use in alloys, particularly stainless steel, where it enhances strength and corrosion resistance. Other notable alloys containing nickel include Monel and Invar.

Nickel plating is a common surface treatment that provides a protective and decorative layer to various metals. This process is widely used in industries such as automotive, electronics, and jewelry manufacturing. In its pure form, nickel is also used in batteries, such as those found in rechargeable devices and electric vehicles.

The element plays a role in biological systems, although its exact function in humans is still under investigation. It is an essential trace element for some microorganisms. Exposure to nickel can cause allergic reactions in some individuals, particularly through skin contact. Industrial and occupational exposure are monitored to ensure safety standards are met.