Soft metal and method for preparation thereof, and exterior...

Details Soft metal and method for preparation thereof, and exterior... Soft metal and method for preparation thereof, and exterior...

2002-08-30

2008-07-08

Zimmerman, John J (Department: 1794)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S663000, C428S678000

Reexamination Certificate

active

07396595

ABSTRACT:
A soft metal and a decorative article of wristwatch are produced by forming, on the surface of a soft metal article (2), a hard layer (3, 13) containing zirconium and molybdenum, or containing zirconium, molybdenum and further an additive element constituted of at least one or more elements selected from niobium, tantalum, and titanium. It is preferable that the content of molybdenum constituting the hard layer (3, 13) is about 30 to 75 wt %, or that the content of molybdenum is about 25 to 65 wt % and the total content of the additive elements is about 25 wt % or less.

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