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Uses of gold:
- Gold has been used for centuries for jewelry and decoration
- Rings
- Brooches
- Necklaces
- Earrings
- Gold leaf – protection & decoration
- Screen printing – directly to china, earthenware, porcelain & glass surfaces
- Key component to liquid gold (12%)
- Ideal for decorative application using brushes and gold pastes (screen printing)
- Coinage metal
- Because of its scarcity, inertness, decorative features
- Forms include
- Coins
- Gold ingots
- Gold bars
- Pure gold
- Alloys like gold flaces
- Foil gauzes (meshes)
- Grain
- Powders
- Sheet
- Sponges
- Tubes
- Wires
- Single gold crystals
- Electronic uses because of inertness and physical properties
- Electrical contacts
- Spring contacts
- Bonding wire
- Solder alloys
- Bumping wire
- Electroplating
- Sputtering targets
- Coating space satellites b/c good IR reflector and inert
- Dentistry
- Good teeth
- Dental attachments
- Inserts
- Solders
- Medical implants in eyes and ears
- Also medically useful wires, tubes, sheets and foils
- 198Au is used for treating cancer and other conditions
- Disodium aurothiomalate is administered as treatment for arthritis
- Nanotechnology
- Applications as colloids
- Conjugates
- Nanoparticle inks
- Nanoparticle solutions
- Nanopowders
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