A brief history of Aluminum
Aluminum is found naturally in the soil, and is extracted from it. It is also mined, and then smelted into its pure form. Aluminum is very hard, brittle, and soft at the same time. It is a silvery white metal, and is often alloyed with other metals to increase its strength and durability. Aluminium is used in many different industries, including construction, aerospace, electronics, aviation, automotive manufacturing, and energy production.Aluminum was discovered when a Swiss scientist named Johann Joachim Becquerel accidentally left a flask containing an electric current near a solution of potassium hydroxide. When he returned to his lab, he found that the solution had turned green. He then performed experiments and noticed that the solution became white after heating. After examining the material, he realized that it contained a new element. In the late 19th century, several chemists independently identified aluminum as a new element. Aluminum was not isolated until 1886, by Heinrich Rose and Carl Runge in Germany.
Aluminum process and technique
Aluminum, or Aluminium (Al), is a bright silver-white metal with a melting point at 1,220 degrees Fahrenheit and a density of 2,7 grams per cubic centimeter. The most abundant metallic elemental component of Earth’s crust, it comprises about 8.1% of its total mass. In nature it occurs in combination with oxygen and other elements, but in the pure state aluminum is soft and ductile. It can be alloyed with other metals to strengthen it and impart additional desirable properties. Alloys of aluminium are light, strong, easy to fabricate, and can take a wide range of finishes. They can be cast and joined using numerous joining techniques, and they accept a great deal of machining. Aluminum is an element that occurs naturally in the Earth’s crust. It is found in both igneous and sedimentary rocks. Aluminum forms minerals when it reacts with water. Aluminium hydroxide is formed when aluminium reacts with water at higher temperatures and pressures. When aluminium is heated above about 600 °C, it becomes very reactive. At lower temperatures, aluminium will react with oxygen and form alumina. Alumina is insoluble in water. If aluminium is exposed to air, it immediately begins forming a protective layer of aluminium oxide. This layer prevents further oxidation of the metal and protects it against attack by acids. Aluminum is also resistant to corrosion because of the formation of a thin passive film of aluminium oxide. This film acts like a barrier that prevents any corrosive material from reaching the underlying metal.
Common aluminum techniques and process
- Aluminum casting
- Aluminium extrusion
- Aluminum rolling
- Anodized aluminum
- Polished aluminum
- Aluminum welding
- Powdered aluminum
- Brazing aluminum
- Cutting aluminum
- Brushed aluminum
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