Vapor Technologies, Inc.

Eduard Pinkhasov

Highly reflective surfaces, e.g. for headlight reflectors for automotive vehicles can be made by low temperature arc vapor deposition from a mixed metal electrode in which the electrode consists of a mixture of powders of a reflective or relative low melting metal and a ceramic forming high melting metal. The deposit is formed under conditions in which the mixed metals are fully reacted on deposition so that the coating is not susceptible to oxidation in use and requires no protective coating.

Method of making reflective articles

The formation of an openwork structure e.g., of metal, utilizing low-temperature arc vapor deposition on a foam which is destroyed by pyrolysis is enhanced by applying a portion of the metal in a metal spray of powders in a binder which is also pyrolytically destroyed. The product has essentially the same properties as one made exclusively by the low-temperature arc vapor deposition method.

Method of making open-pore structures

An openwork nickel structure having a high surface area to volume ratio and a porosity which is largely independent of the degree to which the metal structure may be compressed, is formed by depositing on a pyrolyzable support, preferably a reticulated open-pore polyurethane support, a coating of metal by arc-striking utilizing at least one electrode of that metal and by bringing the electrodes out of contact with one another. The metal-covered support is then subjected to pyrolysis to form the metal skeleton which is then sintered. The resulting metal structure has been found to be suitable for use as an electrode in a Ni-Cd cell.

Method of making an open pore structure

Matrix composites and especially metal matrix composites are formed by coating a foam with a metal or ceramic to form a continuous structure from which the foam material is removed by pyrolysis. If this structure is composed of a metal it is subjected to treatment to transform the metal to a ceramic and the resulting ceramic structure is then filled with another material such as a matrix metal. The product is then compacted and heat treated if desired. The coating of the foam and the filling of the porous ceramic structure are effected preferably by low temperature arc vapor deposition.

Method of making matrix composites

A method and apparatus for deep penetration deposition of material in a porous substrate utilizes a pressure differential across the substrate to effect penetration of arc-produced vapor from one chamber through the body. The one chamber can be held at a pressure of 10.sup.-2 to 10.sup.-3 torr while the other chamber is at a pressure of 10.sup.-5 to 10.sup.-6 torr.

High penetration deposition process and apparatus

Hard difficult-to-roll alloys are shaped by forming a mold of plastic, especially a polyacrylate, with a highly smooth surface onto which the alloy is deposited by low-temperature arc vapor deposition. The alloy layer is then separated from the plastic substrate and subjected to heat treatment to increase its density.

Method of shaping hard difficult-to-roll alloys

An electric arc vapor deposition apparatus for coating the internal surface of a metal gas-pressure tank has a sealing plug, a means on the plug coupled with a vacuum pump for evacuating the tank, a material-supplying electrode mounted on the plug and an electrical source connectable between the tank and the electrode to supply electric arc energy.

Apparatus for coating a metal gas-pressure bottle or tank

Gas-pressure bottles are internally coated by plugging the mouth of the bottle and evacuating the bottle. The coating material is formed by striking repeatedly electric arcs between the electrode deposed within the bottle and the wall of the latter.

Method of coating a metal gas-pressure bottle or tank

Ceramic substrates, e.g. of silicon carbide or silicon nitride are protected against mechanical surface wear at high temperatures by an arc coating with a refractory metal followed by coating with another metal and then with a wear-reducing high density layer, e.g. of a metal oxide, nitride or carbide.

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Eastchester, NY, United States of America

Eduard Pinkhasov