titanium and aluminium

TITANIUM AND ALUMINIUM

Alejandro Sabater GarcíaDavid Pender Villalvilla

TITANIUM

Transition metal with 22 atomic number

CHARACTERISTICS

• Abundant material in the enviroment• Silver and grey color• Oxide, ash, or stain appearence• Hexagonal estructure at enviroment

temperature• Exists on Earth and in space

HISTORY

• Discovered in 1791 by William Gregor• Founded in a menaquita mineral in

England• Founded again by Martin Heinrich in

1974• It was this time in rutilo

SPECIFIC PROPERTIES

• Light metal with low density (4507Kg/m3)• Paramagnetic. It doesn’t magnetic.• Resistant to the corrosion and oxidation• Refractory, and few conductivity• Great tenacity, ductile and malleable• Recyclable

USES OF TITANIUM

• Planes, helicopters, armour-plating , missils manufactruring.

• Surgical instruments, crutches and prothesis

• Buildings construction• Corporal Piercings and dental implants• Helmets, rackets and parts of bicycles

TITANIUM PROTHESIS

• Artificial extensions that replace parts of body

• They improve functions of disabled organs• Composed most of them by titanium• Orthopedic, cardic, dental, mammaria,

genital and auditive

NEGATIVE EFFCTS IN HEATH

• Low toxicity• Titanium produces titanium dioxide• It causes some effects in health:• Badbeing, pain of chest, and cough• Skin irritations• Carcinogenity

ALUMINIUM

APPEARANCE AND ORIGIN

• Metal• Silver-grey colour• Metallic texture• Extracted from bauxita• Terrestrial crust has plenty of it Bauxita

HISTORY

• First obtained artificially: 1825• Firstly considered a precious metal• Name “aluminium” from latin “alumen”

Aluminium ingot exposed as a precious metal in the 1850s

PROPERTIES

• Atomic number: 13. Atomic weight: 27u.• Symbol: Al• Light, density: 2700 kg/m3 • Thermal and electrical conductor• Easily malleable• Melting: 660ºC. Boiling: 2470ºC.

UTILITIES

• Mirrors and telescopes• Means of transport• Aluminium foil• Jewelry: ruby and sapphire

RECYCLING

• 20% aluminium production comes from recycling

• Very cheap to recycle (95% off)• 45% of aluminium cans are recycled

CARBON FIBER

• Sinthetic alternative to aluminium• Made of wires• Lighter than aluminium, density: 1750

kg/m3• A kilometre-long filament weights 1 gram

Carbon wire compaired to hair

PROPERTIES

• Much more strength than aluminium• Stays still against heat• Great elasticity• Very expensive• Hi-tech utilities