Compositions for improving the stability of intercalated graphite structural members
AssigneeIntercal Company
InventorFerdinand L. Vogel
Life of this patent
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Abstract
Members, such as bearings, gaskets, electrical conductors and the like, as well as containing coatings, made from graphite intercalated with a metal halide exhibit superior stability except when used or stored in an extremely humid atmosphere. In a humid atmosphere these members and coatings tend to swell, crack and develop a corrosion layer over time. In accordance with the present invention, however, members and coatings made from intercalated graphite mixed with from 2 vol. % to about 30 vol. % of a metal powder do not exhibit this environmental instability.
Claims14
A powder for forming an environmentally stable member, comprising:
- a metal halide intercalated graphite;
- and
- a metal selected from the group consisting of copper, nickel, silver, molybdenum and tungsten;
- wherein said metal comprises from about 2 volume percent to about 30 volume percent of said environmentally stable powder.
An environmentally stable intercalated graphite member comprising a compact body formed from:
- a metal halide intercalated graphite;
- and
- a finely divided metal powder selected from the group consisting of copper, nickel, silver, molybdenum and tungsten;
- wherein said finely divided metal powder comprises from about 2 volume percent to about 30 volume percent of said compact body.
An environmentally stable intercalated graphite coating comprising:
- a metal halide intercalated graphite;
- a finely divided metal powder selected from the group consisting of copper, nickel, molybdenum and tungsten;
- and
- a liquid resin binder;
- wherein said metal powder comprises from about 2 volume percent to about 30 volume percent of said coating based on the total volume of the intercalated graphite and metal powder.
Dependencies are inferred from the claim text.