Its density is 2.7 grams per cube centimeter. Aluminum is never found uncombined in nature. (Bowman, 391) Aluminum is a very useful metal that is light, easy to shape and can be strong. This makes aluminum one of the most used metals in the world, right behind iron and steel. (Geary, 185) In its pure state, aluminum is quite weak compared to the other metals.
Aluminum, or Aluminium, as the British call it is considered one of many “poor” metals. Being very malleable, it can be made into any shape. It is often pressed into thick aluminum plates of armor for tanks or into thin pieces to make wrappers and foil. Aluminum is extremely popular because it does not rust and can withstand all kinds of chemicals and weather conditions. Aluminum is number thirteen on the periodic table and it’s atomic weight is twenty seven.
Aluminium Introduction: The element Aluminium has a symbol of Al and has an atomic number of 13. It is a very light, soft and useful metal used for many things such as cans, foil and kitchen utensils. It is a ductile metal, a good conductor of heat and electricity, does not corrode and is a solid at room temperature. It was discovered in 1825 by Hans Christian Oersted in Denmark. Aluminium is one of the most used metals in the world as well as one of the most commonly found metals in the Earth’s crust.
Aluminum Aluminum is the second most abundant element in the Earth’s crust. It has a concentration of about 8.2 percent (Craig et al 264). Aluminum “is malleable, ductile, and easily machined and cast; and has excellent corrosion resistance and durability” (http://minerals.usgs.gov/). It is evident in everyday life. Aluminum is a very useful abundant metal.
< http://www.toxicsaction.org/problems-and-solutions/waste > What is air pollution: “eSchoolToday”. 2010. eSchooltoday in Association with BusinessGhana.com web: < http://eschooltoday.com/pollution/air-pollution/what-is-air-pollution.html > Sarah Barnes. March 29, 2011. LIVESTRONG.COM: “The effects of not recycling water bottles.” Web. < http://www.livestrong.com/article/230076-the-effects-of-not-recycling-water-bottles > Assessed on May 11, 2014.
Hastelloy® W has excellent dissimilar welding characteristics. These named characteristics come from the elements that make up the alloy, which can be present in a variety of combinations. This particular alloy is the best choice when it comes to dissimilar alloy weldments. It also has good mechanical properties up to 982°C. Hastelloy® W has low coefficient of thermal expansion, and is used as a wrought alloy for a limited number of ring type applications in older gas turbine engines.
The most important compounds include the oxide, hydroxide, sulfate, and mixed sulfate compounds. Anhydrous aluminum chloride is important in the oil and synthetic-chemical industries. Many gemstones—ruby and sapphire, for example—consist mainly of crystalline aluminum oxide. Aluminum is the most abundant metallic constituent in the crust of the earth; only the nonmetals oxygen and silicon are more abundant. Aluminum is never found as a free metal; commonly as aluminum silicate or as a silicate of aluminum mixed with other metals such as sodium, potassium, iron, calcium, and magnesium.
Atmospheric pollution is also minimized by 30%. (www.lesrecycleurs.ch) The trades of tin plate working continue to this day to make an important contribution to our everyday lives, to industry and to the economy. The trade of tinplate making covers both the manufacture of tinplate from... ... middle of paper ... ...ide spread of aluminum packaging that most people might think that it does not have disadvantages as we see it in our everyday life. However, it transpired that as the aluminum packaging has advantages; it also has disadvantages. Among the advantages we covered in this paper is the lightweight and perseverance of original taste and odor, as well as being environmental friendly as it can be recycled endlessly.
An Analysis of the Properties of Aluminum Physically, chemically and mechanically aluminium is a metal like steel, brass, copper, zinc, lead or titanium. It can be melted, cast, formed and machined much like these metals and it conducts electric current. In fact often the same equipment and fabrication methods are used as for steel. Light Weight Aluminium is a very light metal with a specific weight of 2.7 g/cm3, about a third that of steel. For example, the use of aluminium in vehicles reduces dead-weight and energy consumption while increasing load capacity.
13) Mohs hardness: 2,5 The pure metal is soft, but its alloys are hard. Chemical Properties 1) Corrosion resistant Aluminum resists corrosion by forming a self-protecting oxide coating. 2) Reaction with air aluminum + oxygen ---> aluminum oxide 4Al(s) + 3O2(g) ---> 2Al2O3(s) 3) Reaction with water aluminum + steam ---> aluminum oxide + hydrogen 2Al(s) + 3H2O(g) ---> Al2O3(s) + 3H2(g) 4) Reaction with halogens aluminum + chlorine ---> aluminum(III) chloride 2Al(s) + 3Cl2(g) → 2AlCl3(s) aluminum + bromine ---> aluminum(III) bromide 2Al(s) + 3Br2(l) → Al2Br6(s) aluminum + iodine ---> aluminum(III) iodide 2Al(s) + 3I2(s) → Al2I6(s) 5) Reaction with dilute acids aluminum + nitric acid ---> aluminum nitrate + hydrogen 2Al(s) + 6HNO3(aq) ---> 2Al(NO3)3(aq) + 3H2(g) aluminum + sulphuric acid ---> aluminum sulphate + hydrogen 2Al(s) + 3H2SO4(aq) ---> Al2(SO4)3(aq) + 3H2(g) aluminum + hydrochloric acid ---> aluminum chloride + hydrogen 2Al(s) + 6HCl(aq) ---> 2AlCl3(aq) + 3H2(g) 6) Reaction with bases aluminum + sodium hydroxide + water ---> sodium aluminate + hydrogen 2Al(s) + 2NaOH(aq) +6H2O(l) ---> 2NaAl(OH)4(aq) + 3H2(g) 7) Aluminothermic reaction iron(III) oxide + aluminum ---> iron + aluminum oxide Fe2O3(s) + 2Al(s) ---> 2Fe(s) + Al2O3(s) 8) non-toxic 9) By combining copper, silicon or magnesium, one gets an alloy with a great strength Corrosion Aluminum has very good corrosion resistance in most environments. This is because aluminum resists corrosion by forming a self-protecting oxide layer that prevents further oxidation. Natural corrosion: Aluminum does not corrode with air, thanks to its thin, transparent layer of a... ... middle of paper ... ...n that time people called aluminum "Metal of Kings".