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aluminium present xxx

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aluminium present xxx

  1. 1. -Density-Corrosion Resistance-Electrical and Thermal Conductivity-Light and Heat Reflectivity- Ductility
  2. 2. The density of aluminium The density of aluminium is 2,7 g/cm3 ,around one third that of steel. Used advantageously in applications where high strength and low weight are required.=>> Greater in load capacity and reduced fuel consumption.
  3. 3. Corrosion Resistance of Aluminium -When the surface of a luminium metal is exposed to air, a protective oxide coating forms almost instantaneously. -If the oxide becomes scratched and aluminium metal exposed, more oxide is formed and the protected layer renewed. -This oxide layer is corrosion resistant and can be further enhanced with surface treatments such as anodising.
  4. 4. Electrical and Thermal Conductivity of Aluminium Resistivity: 2,82×10−8 Ωm Thermal Conductivity : 202.4 W/mK The great advantage of a luminium is that by weight, the conductivity of a luminium is around twice that of copper. =>> Aluminium is an excellent conductor of both heat and electricity.
  5. 5. Light and Heat Reflectivity of Aluminium -Aluminium is a good reflector of both visible light and heat -Electrical Resistivity : Low 2.65 x 10 -8 Ohm metres => Aluminium has slow electrical resistivity and therefore has high electrical conductivity -Reflectivity : High 71% unpolished and when polished: 97% => Aluminium is extremely reflective, when polished (some sources say) it is the most reflective material, for this reason it is now frequently used in lights.
  6. 6. High ductility- Aluminium is easy when plastic deformation , spinning, wire and rolled into sheets,foil, tape, film (foil), pressed into bars flowing with the contour length (profile) compl ex very different issue. =>> Summary: Aluminium has a unique set of properties that make it so essential to the modern world. It is ductile , strong (in alloys), lightweight, highly conductive, and extremely reflective.
  7. 7. APPLICATION AND USE OF ALUMINIUM Electrical Conductors Material of construction for Transport Packaging Building and Architecture Foils Miscellaneous Applications
  8. 8. Electrical Conductors - Aluminium alloys have a conductivity averaging 62% of the International Annealed Copper Standard (IACS) but, because of its density, it can carry more than twice as much electricity as an equivalent weight of copper. - A very large proportion of overhead, high voltage, power lines utilise aluminium rather than copper as the conductor on weight grounds.
  9. 9. Material of construction for Transport -The transport and automotive industry is the fastest-growing market segment for aluminium suppliers. -Various alloys of aluminium are now also used in passenger and freight rail cars, commercial vehicles, military vehicles, ships & boats, buses & coaches, bicycles and increasingly in motor cars.
  10. 10. Packaging-The successful use of the 1000 seriesalloys as foil for food wrapping and forcontainers utilises their good corrosionresistance and barrier propertiesagainst UV light, moisture and odour.-The most significant use of aluminiumin packaging has been in theproduction of beverage cans whichincorporate the easy open ring pull inthe lid.
  11. 11. Building and ArchitectureShaped aluminum Nhôm kính nội thất Loose aluminium foil, or aluminium sheets + ribbion = “Hotel Marques de Riscal”. .
  12. 12. Foils  Aluminium is produced in commercial foils as thin as 0.0065 mm (or 6.5 µm). Material thicker than 0.2mm is called sheet or strip. Light aluminum foil
  13. 13. Miscellaneous Applications of AluminiumRoad barrier lithographic printing plates
  14. 14. SUMMARY Aluminium is the worlds most abundant metal and verry important in our life. By utilising various combinations of its advantageous properties such as strength, lightness, corrosion resistance, recyclability and formability, a luminiu m is being employed in an ever-increasing number of applications.

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