2. A LUMINIUM
D ESCRIPTION
•I’ts a chemical element in the boron group
•Its symbol: Al
•Its atomic number: 13
•It’s a silvery white, soft, ductile metal.
•Instead, it’s found combined in over 270 different minerals
•The chief ore of aluminium is bauxite
3. H ISTORY
A LUMINIUM
•Ancient Greeks and Romans used aluminium salts as:
– dyeing mordants
– astringents for dressing wounds
•The metal was first produced in 1825
• Discovered by H. C. Oersted
P ROPERTIES
•It is a very abundant element in the nature
•It is a light metal under point of merger
•His color is white and reflects well the electromagnetic
radiation
•Good electrical and thermal driver
4. U SES
A LUMINIUM
The uses that aluminium gives to nowadays are
MULTIPLE and we can divide them by sectors:
•Electricity and communication
•Transport
•Building and construction
•Packings
R ECYCLING
•It takes between 200 and 500 years to deteriorate
•Any product of aluminium can be recycled infinite times
without losing his properties
•the material can be re-used
5. H ISTORY
T ITANIUM
•Titanium was discovered included in a minera Great
Britain by William Gregor
•He found black sand by a stream
•He noticed the sand was attracted by a magnet
D ESCRIPTION
•It is a metal of transition
•It has a silver greyish color
•It forms alloys with other elements to
improve the mechanical presentations
•It has a small thermal and electrical
conductivity
6. T ITANIUM
P ROPERTIES
•Titanium is not free in the nature
•It has a density of 4507 kg/m3
•Point of merger of 1675 °C
•It is paramagnetic
•Lighter than steel
7. T ITANIUM
U SES
The two most useful properties of the metal are corrosion
resistance and the highest strength-to-density.
•Metallic alloys
•Aeronautical and aerospace industry
•In surgery
•Heat interchangers in the desalination plants
•In metallurgy
R ECYCLING
•The special steels can be recycled in junk yards or
authorized residues managers
8. B IOCHIPS
•They’re essentially miniaturized laboratories
•They can perform simultaneous biochemical reactions
•Biochips enable researchers to :
‒ screen large numbers of biological analytest
‒ detection of bioterrorism agents.
B IOSENSORS
•It’s an analytical device
•It combines a biological component with a physicochemical
component
•It consists of three parts:
– The biological sensor
– The transducer
– The detector
