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US 2006/0065336 A1Published application
Copper-based alloy
AssigneeSwissmetal UMS Usines Metallurgiques Suisse SA
InventorsStephane Gillieron, Hung-Quoc Tran, Emmanuel Vincent
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Abstract
Alloy on the basis of copper, zinc, nickel and manganese having properties of resistance to corrosion, notably to inks and gel-inks. The inventive alloy can have a mono-phased alpha structure and a bi-phased alpha-beta structure and is especially suited to the production of tips and reservoirs for writing implements.
Claims16
Alloy including:
- between 43 and 48 parts by weight of Cu;
- between 33 and 38 parts by weight of Zn;
- between 10 and 15 parts by weight of Ni;
- between 3.5 and 6.5 parts by weight of Mn;
- between 0 and 4 parts by weight of Pb;
- the alloy having a mono-phased alpha structure and a bi-phased alpha-beta structure, wherein the ratio of the beta phase of said bi-phased alpha-beta structure is dependent on the temperature and can be modified and/or essentially cancelled by a hot treatment.
3 more elements
Method of using an alloy including:
- between 43 and 48 parts by weight of Cu;
- between 33 and 38 parts by weight of Zn;
- between 10 and 15 parts by weight of Ni;
- between 3.5 and 6.5 parts by weight of Mn;
- between 0 and 4 parts by weight of Pb;
- the alloy having a mono-phased alpha structure and a bi-phased alpha-beta structure,
- the method including one or several steps of hot treatment for modifying the ratio of the beta phase of said bi-phased alpha-beta structure.
4 more elements
The method of the preceding claim, wherein the ratio of the beta phase of said bi-phased alpha-beta structure is essentially cancelled by the hot treatment.
Dependencies are inferred from the claim text.