US162630A - Improvement in electroplating with nickel - Google Patents
Improvement in electroplating with nickel Download PDFInfo
- Publication number
- US162630A US162630A US162630DA US162630A US 162630 A US162630 A US 162630A US 162630D A US162630D A US 162630DA US 162630 A US162630 A US 162630A
- Authority
- US
- United States
- Prior art keywords
- nickel
- solution
- chloride
- electroplating
- calcium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title description 24
- 229910052759 nickel Inorganic materials 0.000 title description 12
- 238000009713 electroplating Methods 0.000 title description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 14
- 229910052791 calcium Inorganic materials 0.000 description 10
- 239000011575 calcium Substances 0.000 description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 8
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- PCLURTMBFDTLSK-UHFFFAOYSA-N nickel platinum Chemical compound [Ni].[Pt] PCLURTMBFDTLSK-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
Definitions
- my invention consists in the application of chloride of calcium in solution to the bath in the process of electroplating with nickel, in connection with the solution of the salt of the metal to be deposited.
- I employ a solution of chloride of calcium of about the test 30 Baum, water being 1 though I do not confine myself to that test or density.
- the article to be plated upon is then placed as the cathode in the bath, and the electrical current passed through with a nickel anode until the requisite amount of metal is deposited.
- chloride-of-calcium solution of considerable density is a fine conductor of electricity, better than the known plating solution.
- the process of electroplating by its employment can be accomplished by the use of a much weaker battery than it is necessary to employ with other solutions; or the strong battery now employed will do double or even treble the work now obtained by passing the same current through two or more anodes successively and conneotedly. This is explained by the fact that the conducting properties of concentrated solution of c t c a bear the relation of about 3 to l of any other known nickel-platin g solution.
- the density of the solution causes the hydrogen bubbles eliminated in theliquid to rise and pass off from the surface to be plated, thus removing the danger of spotting the electroplated surface. It possesses this advantage over all other plating solutions of nickel, in that it can be obtained and maintained at the density required. Besides, the limpid nature of ohloride-of-calcium solution allows the bubbles to rise freely.
- the chloride of calcium being a permanent and enduring solution, is so fine a permanent and enduring solution for chloride of nickel, securing it against decomposition, that it secures the deposition of a smooth, close, and tough layer of nickel upon the plating surface.
- a small amount of chloride of ammonia may be added to the solution for the purpose of keeping the surface of the metal to be coated free from metallic oxide; but its employment is not imperatively necessary.
- W'hat I claim is-- 1n electroplating with nickel, an electroplating-bath composed of a solution of chloride of calcium and chloride of nickel, substantially as and for the purpose set forth.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Description
UNITED STATES PATENT QFFIE.
HOWARD P. DEGHERT, OF NEW YORK, N. Y.
IMPROVEMENT lN ELECTROPLATING WITH NICKEL.
Specification forming part of Letters Patent No. 162,630, dated April 27, 1875; application filed July 14, 1874.
To all whom it may concern Be it known that I, HOWARD P. DEOHERT, of the city, county, and State of New York, have invented an Improved Mode of Applying Chloride of Calcium in the Process of Electropla-tin g with Nickel; and I do hereby declare that the following is a full, clear, and exact description thereof.
The nature of my invention consists in the application of chloride of calcium in solution to the bath in the process of electroplating with nickel, in connection with the solution of the salt of the metal to be deposited.
I employ a solution of chloride of calcium of about the test 30 Baum, water being 1 though I do not confine myself to that test or density. Into this solution I place a solution of the chloride of nickel in an y proportion, preferring at least ten (10) per cent-., by weight, of the salt, in crystals, to ninety (90) per cent. of the solution of chloride ofcalcium; or the nickel salt may be obtained in said solution of chloride of calcium by placing the necessary amount of hydrochloric acid in said solution of chloride of calcium, and passing the electrical current through it with an anode of nickel, when the anode will dissolve in the acid, and produce the desired solution of chloride of nickel.
The article to be plated upon is then placed as the cathode in the bath, and the electrical current passed through with a nickel anode until the requisite amount of metal is deposited.
The advantages secured in employing the solution of chloride of calcium in the electroplating-bath are that, first, chloride-of-calcium solution of considerable density is a fine conductor of electricity, better than the known plating solution. The process of electroplating by its employment can be accomplished by the use of a much weaker battery than it is necessary to employ with other solutions; or the strong battery now employed will do double or even treble the work now obtained by passing the same current through two or more anodes successively and conneotedly. This is explained by the fact that the conducting properties of concentrated solution of c t c a bear the relation of about 3 to l of any other known nickel-platin g solution.
Second. The density of the solution causes the hydrogen bubbles eliminated in theliquid to rise and pass off from the surface to be plated, thus removing the danger of spotting the electroplated surface. It possesses this advantage over all other plating solutions of nickel, in that it can be obtained and maintained at the density required. Besides, the limpid nature of ohloride-of-calcium solution allows the bubbles to rise freely.
Third. The chloride of calcium, being a permanent and enduring solution, is so fine a permanent and enduring solution for chloride of nickel, securing it against decomposition, that it secures the deposition of a smooth, close, and tough layer of nickel upon the plating surface.
A small amount of chloride of ammonia may be added to the solution for the purpose of keeping the surface of the metal to be coated free from metallic oxide; but its employment is not imperatively necessary.
W'hat I claim is-- 1n electroplating with nickel, an electroplating-bath composed of a solution of chloride of calcium and chloride of nickel, substantially as and for the purpose set forth.
HOWARD P. DEOH ERT.
Witnesses JAMES N. WELLS, J. N. WELLs, Jr.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US162630A true US162630A (en) | 1875-04-27 |
Family
ID=2232039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US162630D Expired - Lifetime US162630A (en) | Improvement in electroplating with nickel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US162630A (en) |
-
0
- US US162630D patent/US162630A/en not_active Expired - Lifetime
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