• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Aluminium Presentation.

Extracts from this document...

Introduction

Aluminium Presentation I've done my presentation on Aluminium and will be talking to you about its properties, where it's found and its uses and why it's the best material for these purposes. Aluminium. Chemical symbol Al. Atomic weight approx 27 Atomic number 13 and electronic configuration 2-8-3. Appearance- pure aluminium is a shiny silvery white material. Down to the molecular level aluminium has a polycrystalline structure where the metal has cooled from different areas of the material where. Where these areas meet are called the grain boundary. This structure gives aluminium its many properties. Density - The first thing you notice about aluminium is its relatively lightweight. It has a density of 2,7g/mm3. This is about 1/3 the weight of a piece of steel the same size. Resists Corrosion - like many other metals aluminium is very reactive in air and thus a fine layer of aluminium oxide is created on the surface. This provides provides a highly effective barrier to the ravages of air, temperature, moisture and chemical attack. ...read more.

Middle

Aluminium itself conducts about 63% of that of copper of the same mass. Aluminium is also a great conductor of heat conducting about 220 Watts Occurance Aluminium is the most abundant metal in the earths crust. Only the non metal elements oxygen and silicon are more abundant. The largest deposits of aluminium are found in Australia, Guinea and West Indies. Aluminium does not occur in its pure form but as either an aluminium silicate or as bauxite which consists of aluminium oxide and commonly iron oxide also. As seen in the picture the aluminium ore is a redish colour this is caused by the iron ore mix. Bauxite is produced through chemical weathering of rocks in tropical climate. Extraction The method now used for aluminium's commercial production is the electrolysis. An iron pot, lined with carbon, is charged with cryolite and heated to about 800�C by the electric current. For the electrolysis, a bundle of carbon rods is used as the anode, while the pot itself forms the cathode. ...read more.

Conclusion

Heat - aluminium is about 3 times as thermal conductive as steel. This feature is used in cooking utensils, engines, air conditioners and it is also being used in energy saving equipment such as solar cells. Reflective - Because aluminium is reflective of most electric, heat and light waves it is being more commonly used in the insulation of homes. Harsh conditions - Unlike steel which gets brittle in cold conditions aluminium get stronger making it the perfect material to use in harsh conditions. Aluminium is now being used on snow-mobiles Cans - aluminium is a non toxic material, smooth, easily washable and is hygienic because no germs an grow on it. Also because malleability it can be shaped into any shaped or form making it ideal for packaging Because of aluminiums low melting point approx 600 C it is the ideal material in this age of energy and resource saving to recycle. So what makes aluminium an great material for all these uses? Its low density Resist corrosion Good conductor of electricity and heat Its ductile High reflectivity Given tremdous strength through alloying Non toxic Cheap to produce and recyclable ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Resistant Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Resistant Materials essays

  1. The task has been set to make a hole punch (used to punch holes ...

    I will also be looking at existing products for ideas as to how I could develop my hole punch. I will adapt my project during construction and note any modification that occurred. After production, I shall test the device, ensure it meets my specification, suggest improvements and evaluate its success.

  2. EFFECT OF MOISTURE ON THE MECHANICAL PROPERTIES OF NYLON

    The plasticizing effect in processing has to do with mobility and relative spacing of the Nylon molecules, the same influence as on physical properties. This low level of moisture does not cause significant degradation during processing. The absorption of moisture by Nylon must be considered in mold making.

  1. My aim of this experiment is to recognize which material is the greatest sound ...

    heat through the building envelope, and has the ability to perform a structural role. Polystyrene is a polymer. Polymers are long molecules with lots of atoms joined to one another like links in a chain. The diagram above shows one link in the chain, and the brackets with 'n' shows

  2. Investigation into the physical properties of glass.

    The "glass is a liquid" argument in some cases said that antique windows were thicker at the bottom which proves that glass flowed downwards. From reading various sources I concluded that it was the way that glass used to be made which meant that the windows were thicker at the bottom.

  1. Thermal Conductivity.

    nail fell off the opposite end so we had to do the test again to acquire a result. I concluded to myself that the reason for the melting of the sample material glass must have an irregular pattern of atoms so that the gaps in between the atoms could absorb

  2. The Progression of the Sail Boat from Past to Present and beyond

    Lower aspect ratios require a more even weave most often with fibres of similar Denier (weight of 9, 000 m of the fibre). The tightness of the weave is also a factor that changes for different sails. The smaller Denier must have a tighter weave.

  1. TASK: Turning a Mild Steel Bar.We were each given a mild steel bar to ...

    Once the piece was finished, the lathe had to be cleaned down ready for the next user. Milling Task: Milling Aluminium We were each given a piece of aluminium which was to be milled so that it measured 40mm x 40mm.

  2. TENSILE TESTING OF METALS

    The stress obtained at the highest applied force is called the tensile strength. The elongation and reduction provides an indication of how ductile the material is. 3 - Tensile Strength The tensile strength is described as the stress which is obtained at the highest applied force.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work