Title:
SILVER ALLOY FOR DECORATION
Document Type and Number:
Japanese Patent JP3228730
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To allow the alloy to exhibit a pinkish color and to prevent the phenomenon of local battery in living conditions by allowing it to contain specified weight ratios of silver, copper and palladium as the main components and moreover adding it with a specified weight ratio of platinum or gold.
SOLUTION: This silver alloy has a compsn. contg., by weight, 40 to 85% silver, 12 to 48% copper and 3 to 20% palladium and moreover added with one or more kinds of platinum up to 10% or gold up to 20%. Silver is the main component, copper is the component for imparting a pinkish color, and palladium and platinum are the components for preventing its local conversion into a battery in living conditions and also have the effect of improving it sulfidation resistance. When silver is added with copper and, though it is a two phase eutectic compsn., noble metals (palladium and platinum) are moreover added, the silver alloy for decoration capable of preventing its local conversion into a battery in living conditions can be obtd. It is cast by a lost wax method or the like and is worked as decorative members such as finger rings, pendants, necklaces and pierced earrings.
More Like This:
| WO/2012/108082 | Ag-Au-Pd TERNARY ALLOY-BASED BONDING WIRE |
| WO/2014/141975 | BONDING WIRE |
Inventors:
Takanori Nishihara
Application Number:
JP21593099A
Publication Date:
November 12, 2001
Filing Date:
July 29, 1999
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
C22C5/06; (IPC1-7): C22C5/06
Domestic Patent References:
| JP200079008A | ||||
| JP200087157A | ||||
| JP2000199020A | ||||
| JP3245405A | ||||
| JP770669A | ||||
| JP656546A |