hliníkem

Hliníkem is the Czech word for aluminum. Aluminum is a chemical element with the symbol Al and atomic number 13. It is a metal in the boron group. Aluminum is a silvery-white, ductile post-transition metal. It is the third most abundant element in the Earth's crust, making up about 8% of the crust by mass. Aluminum is a highly reactive element, but it forms a protective oxide layer on its surface that is impervious to corrosion, preventing further reaction of the metal with air or water.

Aluminum is non-magnetic and does not readily ignite. It is resistant to tarnishing and corrosion. It is also lightweight, durable, and has good electrical conductivity. These properties make it a widely used material in various industries, including aerospace, automotive, construction, and packaging.

The primary ore of aluminum is bauxite. The extraction of aluminum from bauxite is an energy-intensive process, typically carried out through electrolysis. This process, known as the Hall-Héroult process, involves dissolving alumina (aluminum oxide) in molten cryolite and then passing an electric current through the mixture.

Aluminum can be recycled, and recycling aluminum uses significantly less energy than producing it from ore. This makes it an environmentally friendly choice for many applications. Common uses for aluminum include beverage cans, window frames, aircraft components, and cookware. Its alloys are also used to enhance its strength and other properties.