Titanium and aluminium
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TITANIUM AND ALUMINIUM
Alejandro Sabater GarcíaDavid Pender Villalvilla
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TITANIUM
Transition metal with 22 atomic number
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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
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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
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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
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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
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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
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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
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ALUMINIUM
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APPEARANCE AND ORIGIN
• Metal• Silver-grey colour• Metallic texture• Extracted from bauxita• Terrestrial crust has plenty of it Bauxita
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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
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PROPERTIES
• Atomic number: 13. Atomic weight: 27u.• Symbol: Al• Light, density: 2700 kg/m3 • Thermal and electrical conductor• Easily malleable• Melting: 660ºC. Boiling: 2470ºC.
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UTILITIES
• Mirrors and telescopes• Means of transport• Aluminium foil• Jewelry: ruby and sapphire
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RECYCLING
• 20% aluminium production comes from recycling
• Very cheap to recycle (95% off)• 45% of aluminium cans are recycled
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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
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PROPERTIES
• Much more strength than aluminium• Stays still against heat• Great elasticity• Very expensive• Hi-tech utilities