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US 2016/0133453 A1Published application
Amalgam balls having an alloy coating
AssigneeUmicore AG & Co. KG
InventorsOlivier HUTIN, Hans Martin RINGELSTEIN
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Abstract
Energy-saving lamps contain a gas filling of mercury vapour and argon in a gas discharge bulb. Amalgam balls are used for filling the gas discharge bulb with mercury. Novel coated balls whose operating life in the case of automatic metered introduction is increased by coating of the balls with an alloy powder and conglutination of the amalgam balls during storage and processing is prevented are proposed,
Claims15
An amalgam ball which is coated with an alloy powder, wherein
- the alloy powder has a composition of silver (Ag) from 3% by weight to 80% by weight, copper (Cu) from 0,5% by weight to 43% by weight, tin (Sn) from 0% by weight to 96.5% by weight, zinc (Zn) from 0% by weight to 5% by weight, indium (In) from 0% by weight to 10% by weight and gold, palladium and platinum (Au/Pd/Pt), individually or in combination with one another, from 0% by weight to 5% by weight, where the amounts of the metals add up to a total of 100% by weight.
Dependencies are inferred from the claim text.