Abstract Films of discrete fine particles of inorganic and organic materials can be cathodically electrodeposited at low voltages from aqueous solutions of salts of non-plating monovalent cations such as solutions of sodium sulfate. For example, particles such as barium sulfate, boron and polyvinyl chloride can be deposited on a cathode from solutions of sodium sulfate in which the particles are dispersed. These films of particles can be used as such or can then be rinsed and transferred to plating baths and the films of particles can thus be imbedded in a metal matrix. Such 2-phase composite plates can be used for engineering purposes such as anti-friction applications, and the like, or with multiple plates to obtain excellent protection against atmospheric corrosion.
A BATH FOR CATHODICALLY ELECTRODEPOSITING FILMS OF FINE PARTICLES, WHICH COMPRISES AT LEAST ONE WATER-INSOLUBLE POWDER HAVING A PARTICLE SIZE IN THE RANGE OF FROM ABOUT 0.01 TO 10 MICRONS AND BEING PRESENT IN AMOUNT RANGING FROM ABOUT 1 TO 150 G L DISPERSED IN A AQUEOUS SOLUTION OF ABOUT 30 TO ABOUT 100 G L OF SALTS OF MONOVALENT CATIONS SELECTED FROM THE CLASS OF THE ALKALI METAL CATIONS AND THE AMMONIUM CATION, SAID SOLUTION BEING FREE OF IRONS THAT CAN BE ELECTROPLATED.
Claim 2
Dependent Claim
84 words
A BATH FOR CATHODICALLY ELECTRODEPOSITING FILMS OF FINE PARTICLES, WHICH COMPRISES AT LEAST ONE WATER-INSOLUBLE POWDER HAVING A PARTICLE SIZE IN THE RANGE OF FROM ABOUT 0.01 TO 10 MICRONS AND BEING PRESENT IN AMOUNT RANGING FROM ABOUT 1 TO 150 G L DISPERSED IN A AQUEOUS SOLUTION OF ABOUT 30 TO ABOUT 100 G L OF SALTS OF MONOVALENT CATIONS SELECTED FROM THE CLASS OF THE ALKALI METAL CATIONS AND THE AMMONIUM CATION, SAID SOLUTION BEING FREE OF IRONS THAT CAN BE ELECTROPLATED.
Claim 3
Dependent Claim
20 words
A bath in accordance with claim 1, wherein said monovalent cations are present in the aqueous solution as sulfate salts.
Claim 4
Dependent Claim
15 words
A bath in accordance with claim 1, wherein said water-insoluble particles are barium sulfate particles.
Claim 5
Dependent Claim
14 words
A bath in accordance with claim 1, wherein said water-insoluble particles are boron particles.
Claim 6
Dependent Claim
14 words
A bath in accordance with claim 1, wherein said water-insoluble particles are silicon particles.
Claim 7
Dependent Claim
15 words
A bath in accordance with claim 1, wherein said water-insoluble particles are silicon carbide particles.
Claim 8
Dependent Claim
19 words
A bath in accordance with claim 1, wherein said monovalent cations are present in the aqueous solution as carbonates.
Claim 9
Dependent Claim
19 words
A bath in accordance with claim 1, wherein said monovalent cations are present in the aqueous solution as sulfonate.