US30663A - Improvement in electroplating with alloys of gold - Google Patents
Improvement in electroplating with alloys of gold Download PDFInfo
- Publication number
- US30663A US30663A US30663DA US30663A US 30663 A US30663 A US 30663A US 30663D A US30663D A US 30663DA US 30663 A US30663 A US 30663A
- Authority
- US
- United States
- Prior art keywords
- gold
- copper
- alloys
- electroplating
- improvement
- 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
- 229910001020 Au alloy Inorganic materials 0.000 title description 6
- 238000009713 electroplating Methods 0.000 title description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 24
- 229910052802 copper Inorganic materials 0.000 description 24
- 239000010949 copper Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 16
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 14
- 229910052737 gold Inorganic materials 0.000 description 14
- 239000010931 gold Substances 0.000 description 14
- 239000002244 precipitate Substances 0.000 description 12
- 229910052709 silver Inorganic materials 0.000 description 12
- 239000004332 silver Substances 0.000 description 12
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 8
- 229910052708 sodium Inorganic materials 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- ORXDSIPBTFAEKJ-UHFFFAOYSA-N ferrocyanide Chemical compound N#C[Fe-4](C#N)(C#N)(C#N)(C#N)C#N ORXDSIPBTFAEKJ-UHFFFAOYSA-N 0.000 description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 6
- 239000011591 potassium Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N Cyanogen Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- NNFCIKHAZHQZJG-UHFFFAOYSA-N Potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N Silver nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000002939 deleterious Effects 0.000 description 2
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 230000001264 neutralization Effects 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
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
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/62—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of gold
Definitions
- my invention consists in a preparation or process or means by which I am enabled to deposit a compound metal of gold and copper, or gold and silver, or gold, copper, and silver upon a metallic surface to resemble an alloy of gold of any desired color or fineness and of any required thickness.
- the proportions of materials I employ are best in the following quantities, but may be varied therefrom: one hundred and fifty parts ferrocyanide of potassium or sodium, seventyfive parts phosphate of soda, fifty parts carbonate of soda or potash, twenty five parts neutral sulphate of soda.
- the special nature of my invention consists in the preparation of the copper solution, which is composed of a double ferro'cyanide of copper and potassium or sodium.
- I dissolve nitrate of copper (or any salt of copper, preferring, however, the nitrate) resulting from twenty pennyweights pure copper, precipitate by ferrocyanide of potassium in proper quantity to precipitate all the copper, boil a short time, filter, and wash the precipitate. Boil this precipitate in the same salt as for the gold and silver, employing but two or three quarts of water, and, when cool, bottle it and put aside for use.
- a great advantage of this process consists in my being able to dispense with the use of cyanide or mercury or the galvanic battery, the employment of which are expensive, deleterious to health, and uncleanly, besides being of difficult manipulation, while my process is cheap, prompt, and sure, and the surfaces of the articles coated are preserved with all their finish perfect, however thick the coating may be. No burnishing or touching up is required, while the facility of the manipulation and the regularity of the process are such that the operator requires no previous chemical knowledge, which constitutes for this branch of industry a great stride in importance and usefulness.
- This apparatus and contents I heat while in use to about 60 or 80 centigrade.
Description
UNITED STATES PATENT OFFICE.
A. BERTHOUD, OF NEW YORK, N. Y.
IMPROVEMENT IN ELECTROPLATING WITH ALLOYS OF GOLD.
To all whom it may concern:
Be it known that I, ACHILLE BERTHOUD, of No. 214 William street, in the city of N ew York, State of New York, have invented certain Improvements in Gildin g Metals; and I do hereby declare the following to be a full and exact description thereof.
The nature of my invention consists in a preparation or process or means by which I am enabled to deposit a compound metal of gold and copper, or gold and silver, or gold, copper, and silver upon a metallic surface to resemble an alloy of gold of any desired color or fineness and of any required thickness.
The proportions of materials I employ are best in the following quantities, but may be varied therefrom: one hundred and fifty parts ferrocyanide of potassium or sodium, seventyfive parts phosphate of soda, fifty parts carbonate of soda or potash, twenty five parts neutral sulphate of soda.
First, dissolve the above in eight quarts of rain-water and add the ammonia precipitate resulting from four pennyweights of chloride of gold, wash well, boil twenty minutes, and, when cold, filtrate, which constitutes the goldbath second, dissolve the nitrate of silver made from twenty pennyweights of silver and precipitate by chloride of sodium, wash the precipitate well to remove all the acid, and add to it the same solution as for the gold, but using it more concentrated, using but two qilarts of water, boil twenty minutes, cool, and n ter.
The special nature of my invention consists in the preparation of the copper solution, which is composed of a double ferro'cyanide of copper and potassium or sodium.
I dissolve nitrate of copper (or any salt of copper, preferring, however, the nitrate) resulting from twenty pennyweights pure copper, precipitate by ferrocyanide of potassium in proper quantity to precipitate all the copper, boil a short time, filter, and wash the precipitate. Boil this precipitate in the same salt as for the gold and silver, employing but two or three quarts of water, and, when cool, bottle it and put aside for use.
,To obtain any desirable color for the coat- *"ing, add or measure more or less of the two solutions of silver or copper to the gold-bath, according to the tint required. By closely observing the effect but a short time will be necessary to become skillful and familiar with the process and treatment.
A great advantage of this process consists in my being able to dispense with the use of cyanide or mercury or the galvanic battery, the employment of which are expensive, deleterious to health, and uncleanly, besides being of difficult manipulation, while my process is cheap, prompt, and sure, and the surfaces of the articles coated are preserved with all their finish perfect, however thick the coating may be. No burnishing or touching up is required, while the facility of the manipulation and the regularity of the process are such that the operator requires no previous chemical knowledge, which constitutes for this branch of industry a great stride in importance and usefulness. It is distinct and greatly superior to and gives results different from those obtained by the employment of baths allied to those of cyanogen, which demand a strong electric force and a knowledge of hydroplastic manipulations, and which present no regularity in the execution of the delicate work of gilding jewelry.
The solutions described do not oppose electrio currents.
I use an apparatus similar to that in ordinary use in the electrotype process for coating with copper, which consists in a porous cell filled with the gilding liquid, and within which the article to be coated is placed, con-' nected with a cylinder of zinc surrounding the porous cell, the whole being placed in a vessel of iron or other proper material, filled, however, with a strong solution of chloride of sodium instead of acid. This apparatus and contents I heat while in use to about 60 or 80 centigrade.
I do not claim the use of solutions ot'ferrocyanide of cop perin cyanide of potassium, such having already been used in the electrotype process; but
I claim as my improvement in electroplating metals- 1. The employment of the solution of copper prepared substantially in the manner as above set forth.
2. The employment of solutions of gold and silver, prepared substantially as above set forth, in admixture with the described solutions of copper.
3. The abovedescribed process of electroplatingmetals with alloys of gold so as to produce any desired color.
A. BERTHOUD.
"Witnesses:
J. B. HYDE, S. BERTHOUD.
Publications (1)
Publication Number | Publication Date |
---|---|
US30663A true US30663A (en) | 1860-11-20 |
Family
ID=2100305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US30663D Expired - Lifetime US30663A (en) | Improvement in electroplating with alloys of gold |
Country Status (1)
Country | Link |
---|---|
US (1) | US30663A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4697497A (en) * | 1984-12-07 | 1987-10-06 | Volkswagen Aktiengesellschaft | Hydraulic amplifier valve assembly |
-
0
- US US30663D patent/US30663A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4697497A (en) * | 1984-12-07 | 1987-10-06 | Volkswagen Aktiengesellschaft | Hydraulic amplifier valve assembly |
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