Sol gel formation of polysilicate, titania, and alumina interlay

Details Sol gel formation of polysilicate, titania, and alumina interlay Sol gel formation of polysilicate, titania, and alumina interlay

1988-02-11

1988-12-06

Lusignan, Michael

Coating processes

Coating by vapor, gas, or smoke

Metal coating

4273977, 427404, 4274192, B05D 302, B05D 136, B05D 700, C23C 1600

Patent

active

047895632

ABSTRACT:
A metal-coated substrate, e.g., of glass, ceramic, or a hydroxy-functionalized material, wherein the improvement comprises a polysilicate, titania, or alumina interlayer between the substrate and the metal coating. The interlayer may have a porous microstructure, e.g., a polysilicate interlayer with an average pore size on the order of 50-150 Angstroms.
Such articles, e.g., in the form of metal-coated fibers, may suitably be employed as reinforcing media in material composites having utility in structural applications, such as EMI shielding elements.
Also disclosed is a corresponding method for forming a metal coating on a substrate by the provision of an interlayer of the above type. The interlayer may suitably be formed by applying to the substrate a sol gel dispersion of the polysilicate, titania, or alumina material, followed by drying of the applied dispersion.

REFERENCES:
patent: 4297246 (1981-10-01), Cairns
patent: 4614673 (1986-09-01), Bendig
patent: 4636440 (1987-01-01), Jada

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