Aluminium or aluminum (Symbol Al) (see the spelling section below) is a silvery and ductile member of the poor metal group of chemical elements. Its atomic number is 13. Aluminium is found primarily as the ore bauxite and is remarkable for its resistance to oxidation (due to the phenomenon of passivation), its strength, and its light weight. Aluminium is used in many industries to make millions of different products and is very important to the world economy. Structural components made from aluminium are vital to the aer ...

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Aluminium - History Aluminium - Natural occurrence Aluminium - Isotopes
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Aluminium - Etymology / Nomenclature history Aluminium - Present day spelling
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Aluminium - Oxidation state 1 Aluminium - Oxidation state 2 Aluminium - Oxidation state 3
Aluminium - Aluminium in popular culture

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Although aluminium is the most abundant metallic element in Earth's crust (believed to be 7.5% to 8.1%), it is very rare in its free form and was once considered a precious metal more valuable than gold. Napoleon III of France had a set of aluminium plates reserved for his finest guests. Others had to make do with gold ones. Aluminium has been produced in commercial quantities for just over 100 years. Aluminium was, when it was first discovered, extremely difficult to separate from its ore. Aluminium is among the most difficult metals ...

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Aluminium Dream Symbols:

(Source: Myths - Dreams - Symbols)

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Aluminium, Metal, Metals, Value, Personal development, Personal growth, Feminine, Intuition, Unconscious, Silver

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Whether measured in terms of quantity or value, the use of aluminium exceeds that of any other metal except iron, and it is important in virtually all segments of the world economy. Pure aluminium has a low tensile strength, but readily forms alloys with many elements such as copper, zinc, magnesium, manganese and silicon. When combined with thermo-mechanical processing these aluminium alloys display a marked improvement in mechanical properties. Aluminium alloys form vital components of aircraft and rockets as a resu ...

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Whether measured in terms of quantity or value, the use of aluminium exceeds that of any other metal except iron, and it is important in virtually all segments of the world economy. Pure aluminium has a low tensile strength, but readily forms alloys with many elements such as copper, zinc, magnesium, manganese and silicon (e.g.duralumin). Today almost all materials that claim to be aluminium are actually an alloy thereof. Pure aluminium is encountered only when corrosion resistance is more important than strength or hardness. Conversely, the term "alloy" in genera ...

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Aluminium - Oxidation state 1. AlH is produced when aluminium is heated at 1500 °C in an atmosphere of hydrogen. Al2O is made by heating the normal oxide, Al2O3, with silicon at 1800 °C in a vacuum. Al2S can be made by heating Al2S3 with aluminium shavings at 1300 °C in a vacuum. It quickly disproportionates to the starting materials. The selenide is made in a parallel manner. AlF, AlCl and AlBr exist in the gaseous phase when the tri- ...

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Aluminium bronze is a type of bronze in which aluminium is the main alloying metal added to copper. A variety of aluminium bronzes of differing compositions have found industrial use, with most ranging from 5% to 11% aluminium by weight, the remaining mass being copper; other alloying agents such as iron, nickel, manganese, and silicon are also sometimes added to aluminium bronzes. Aluminium bronze - Compositions. Following is a list of common standard aluminium bronze wrought alloy compositions, by ISO 428 ...

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Aluminium chloride (AlCl3) is a compound of aluminium and chlorine. The anhydrous material has a very interesting structure: despite being the halide of a highly electropositive metal, its bonding is principally covalent. This is seen in the fact that it has a low melting and boiling point (it sublimes at 178 °C), and it conducts electricity poorly in the liquid state[1], unlike ionic halides such as sodium chloride. It exists in the solid state as a six-coordinate layer lattice. This melts to a four-coordinate ...

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Aluminium oxide or aluminum oxide is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is also commonly referred to as alumina in the mining, ceramic, and materials science communities. Alumina is generally available in two concentrations: 99.5% and 96%. Aluminium oxide is responsible for metallic aluminium's resistance to weathering. Metallic aluminium is very reactive with atmospheric oxygen, and a thin passivation layer of aluminium oxide quickly forms on any ...

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Aluminium foil (Aluminum foil in North American English) is aluminium prepared in thin sheets (on the order of 0.02 mm in thickness). As a result of this, the foil is extremely pliable, and can be bent or wrapped around objects with ease. Aluminium foil is sometimes known as al-foil or alu-foil. It is also often called tinfoil, although it is not made from tin; or in North America, as Reynolds wrap after Reynolds Metals Company, the leading manufacturer when it was introduced on the American market (Much to the chagrin of Alcoa, Reynolds main competitor, which had its brand ...

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Aluminium is one of the few abundant elements that appears to have no beneficial function in living cells, but a few percent of people are allergic to it — they experience contact dermatitis from any form of it: an itchy rash from using styptic or antiperspirant products, digestive disorders and inability to absorb nutrients from eating food cooked in aluminium pans, and vomiting and other symptoms of poisoning from ingesting such products as Rolaids , Amphojel, and Maalox (antacids). In other persons, aluminium is not considered as toxic ...

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Aluminium wire is a type of wiring used in houses and power grids. Aluminium wire - History. Aluminium wire - Usage within utilities. In the mid 1950s, utility companies began using aluminium wire for transmission of electricity within their power grids. It had advantages over the typical copper wire in that it was lighter, more flexible, and less expensive. Aluminium wire in power grid applications was very successful and is still used today. Aluminium wir ...

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Aluminium wire - Aluminium oxidation Aluminium wire - Coefficient of expansion Aluminium wire - Joining aluminium and copper wires
Aluminium wire - Upgrading aluminium-wired homes

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Cryolite (Na3AlF6, sodium aluminium fluoride) is an uncommon mineral of very limited natural distribution. It is mostly identified with the once large deposit at Ivigtût on the west coast of Greenland. It was historically used as an ore of aluminium and later in the electroytic processing of the aluminium rich oxide ore, bauxite, which is a combination of aluminium oxide minerals such as gibbsite, boehmite and diaspore. The difficulty of removing aluminium from oxygen in the oxide ores was overcome by the ...

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Wöhler process was used in the production of aluminium. It involved the reduction of anhydrous alumium chloride with potassium, and produced powdered aluminium. In 1827, Friederick Wöhler refined a process discovered by Hans Christian Oersted, a Danish chemist, who first produced impure aluminium in 1825. This allowed him to establish the specific gravity of aluminium in 1845. Other related archivesaluminium, potassium

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Aluminium sulfate is a widely used industrial chemical. It is sometimes incorrectly referred to as alum, as it is closely related to this group of compounds. It occurs naturally as the mineral alunogenite. It is frequently used in the purification of drinking water supplies, and also in paper manufacturing. Aluminium sulfate is rarely, if ever, encountered as the anhydrous salt. It forms a number of different hy ...

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Ammonal is an explosive made up of ammonium nitrate, trinitrotoluene, and aluminium powder mixed in a ratio of roughly 22/67/11. The ammonium nitrate functions as an oxidizer and aluminium as a power enhancer. To some extent the aluminium makes it less sensitive to detonation. The use of the relatively cheap ammonium nitrate and aluminium make it a replacement for pure TNT. The mixture can suffer since it has the problem of ammonium nitrate being highly hygroscopic. It burns when open, and detonates when con ...

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Ammonal - History

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Gibbsite, Al(OH)3, is an important ore of aluminium and is one of three minerals that make up the rock bauxite. Bauxite is often thought of as a mineral but is really a rock composed of aluminium oxide and hydroxide minerals such as gibbsite, boehmite (AlO(OH)), and diaspore (HAlO2), as well as clays, silt, and iron oxides and hydroxides. Bauxite is a laterite, a rock formed from intense weathering environments such as foun ...

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An anode (from the Greek άνοδος = 'going up') is the electrode in a device that electrons flow out of to return to the circuit. Literally, the path through which the electrons ascend out of an electrolyte solution. The other charged electrode in the same cell or device is the cathode. For electrons to flow through the anode a positive charge is applied to the anode (attracting electrons). Anode - Flow of electrons. The flow of electrons is always from anode–to–cathode < ...

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Yttrium aluminium garnet (YAG, Y3Al5O12) is a synthetic crystalline material of the garnet group, used as the active laser medium in various solid-state lasers. YAG is used in jewelry as a diamond simulant. Nd:YAG is commonly doped with other elements to obtain a specific laser wavelength e.g. Neodymium or Erbium to form Nd:YAG and Er:YAG lasers, respectively. Cerium-doped YAG (YAG:Ce) is used as a phosphor in applications ranging from cathode ray tubes to white LEDs. Including:

Yttrium aluminium garnet - Properties Yttrium aluminium garnet - Doped variations
Yttrium aluminium garnet - Nd:YAG Yttrium aluminium garnet - Er:YAG Yttrium aluminium garnet - Yb:YAG Yttrium aluminium garnet - Nd:Ce:YAG Yttrium aluminium garnet - Ho:Cr:Tm:YAG Yttrium aluminium garnet - Tm:YAG Yttrium aluminium garnet - Cr4+:YAG Yttrium aluminium garnet - Dy:YAG Yttrium aluminium garnet - Sm:YAG Yttrium aluminium garnet - Tb:YAG Yttrium aluminium garnet - Ce:YAG

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