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US 5,844,153 AGranted
Cobalt binder metal alloy
AssigneeEMTEC Magnetics GmbH
InventorsManfred Schlatter, Jurgen Koppe, Volker Eichhorst
Life of this patent
Estimating the term…
Abstract
A mixed metal powder for hard metal alloys comprising cobalt, 1 to 10 parts per weight tungsten and 1 to 10 parts by weight of aluminum and a hard metal alloy containing the mixed metal powder binder in an amount of from 2 to 12 parts by weight per about 100 parts by weight of a metal carbide for corrosion resistant hard metal tools.
Claims13
A mixed metal powder binder for hard metal tools consisting essentially of
- a) from 1 to 10 parts by weight of aluminum, and
- b) from 1 to 10 parts by weight of tungsten
- per 100 parts by weight of cobalt.
A hard metal composition consisting essentially of
- i) from about 2 to about 12 parts by weight of a mixed metal powder binder consisting essentially of
- a) from 1 to 10 parts by weight of aluminum,
- b) from 1 to 10 parts by weight of tungsten, and
- per 100 parts by weight of cobalt,
- ii) per 100 parts by weight of a metal carbide selected from a group consisting of titanium carbide, tantalum carbide, chromium carbide and tungsten carbide.
2 more elements
A hard metal tool consisting essentially of
- i) from about 2 to about 12 parts by weight of a mixed metal powder binder consisting essentially of
- a) from 1 to 10 parts by weight of aluminum,
- b) from 1 to 10 parts by weight of tungsten, and
- per 100 parts per weight of cobalt,
- ii) per 100 parts by weight of a metal carbide selected from a group consisting of titanium carbide, tantalum carbide, chromium carbide and tungsten carbide.
2 more elements
Dependencies are inferred from the claim text.