Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1986-09-26
1988-04-19
Beck, Shrive P.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283171, 428375, 428378, 428379, 428380, 428381, 428384, 428388, 428389, 428390, 427252, 427404, B32B 326, B32B 900, C23C 1600, B05D 100
Patent
active
047388960
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:
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patent: 4297246 (1981-10-01), Cairns et al.
patent: 4614673 (1986-09-01), Bendig
patent: 4636440 (1987-01-01), Jada
Nogami, M. et al., "Glass Formation Through Hydrolysis of Si(OC.sub.2 H.sub.5).sub.4 with NH.sub.4 OH and HCl Solution", Journal of Non-Crystalline Solids, 37, Feb. 1980, pp. 191-201, North-Holland Publishing Company.
Brinker, C. J., et al., "Sol-Gel Transistion in Simple Silicates," Journal of Non-Crystalline Solids, 48, Jan. 1982, pp. 47-64, North-Holland Publishing Company.
Dislich, H., "Glassy and Crystalline Systems from Gels: Chemical Basis and Technical Application," Journal of Non-Crystalline Solids, 57, May 1983, pp. 371-388, North-Holland Publishing Company.
Advanced Technology & Materials Inc.
Beck Shrive P.
Burke Margaret
Hultquist Steven J.
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