US3174918A - Bright gold electroplating - Google Patents
Bright gold electroplating Download PDFInfo
- Publication number
- US3174918A US3174918A US84517A US8451761A US3174918A US 3174918 A US3174918 A US 3174918A US 84517 A US84517 A US 84517A US 8451761 A US8451761 A US 8451761A US 3174918 A US3174918 A US 3174918A
- Authority
- US
- United States
- Prior art keywords
- silver
- gold
- bright
- deposits
- bath
- 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
- 239000010931 gold Substances 0.000 title description 33
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title description 30
- 229910052737 gold Inorganic materials 0.000 title description 30
- 238000009713 electroplating Methods 0.000 title 1
- 239000003792 electrolyte Substances 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 description 23
- 239000004332 silver Substances 0.000 description 23
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 18
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 12
- -1 silver ions Chemical class 0.000 description 11
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 9
- 238000007747 plating Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 7
- 238000013019 agitation Methods 0.000 description 6
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical class OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 6
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 5
- 229910052783 alkali metal Inorganic materials 0.000 description 5
- 239000002738 chelating agent Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 229910001961 silver nitrate Inorganic materials 0.000 description 4
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 4
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 3
- 239000008139 complexing agent Substances 0.000 description 3
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002650 laminated plastic Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 description 2
- 229910000367 silver sulfate Inorganic materials 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 1
- 101100129499 Arabidopsis thaliana MAX2 gene Proteins 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 101150116779 CD82 gene Proteins 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 102000057159 Kangai-1 Human genes 0.000 description 1
- 108700032443 Kangai-1 Proteins 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 description 1
- XAWSBNBFMQAZCE-UHFFFAOYSA-N N#C[Co]C#N Chemical class N#C[Co]C#N XAWSBNBFMQAZCE-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 101100184049 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MID2 gene Proteins 0.000 description 1
- FJAAKDGALOFQSO-UHFFFAOYSA-N [K].[Ni] Chemical compound [K].[Ni] FJAAKDGALOFQSO-UHFFFAOYSA-N 0.000 description 1
- LUZZASVJWGRCFO-UHFFFAOYSA-N [Na].[Ag]C#N Chemical compound [Na].[Ag]C#N LUZZASVJWGRCFO-UHFFFAOYSA-N 0.000 description 1
- 229910052936 alkali metal sulfate Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 150000008107 benzenesulfonic acids Chemical class 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HPYNZHMRTTWQTB-UHFFFAOYSA-N dimethylpyridine Natural products CC1=CC=CN=C1C HPYNZHMRTTWQTB-UHFFFAOYSA-N 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- IZLAVFWQHMDDGK-UHFFFAOYSA-N gold(1+);cyanide Chemical compound [Au+].N#[C-] IZLAVFWQHMDDGK-UHFFFAOYSA-N 0.000 description 1
- MXZVHYUSLJAVOE-UHFFFAOYSA-N gold(3+);tricyanide Chemical compound [Au+3].N#[C-].N#[C-].N#[C-] MXZVHYUSLJAVOE-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000007686 potassium Nutrition 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229960003975 potassium Drugs 0.000 description 1
- HKSGQTYSSZOJOA-UHFFFAOYSA-N potassium argentocyanide Chemical compound [K+].[Ag+].N#[C-].N#[C-] HKSGQTYSSZOJOA-UHFFFAOYSA-N 0.000 description 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- XTFKWYDMKGAZKK-UHFFFAOYSA-N potassium;gold(1+);dicyanide Chemical compound [K+].[Au+].N#[C-].N#[C-] XTFKWYDMKGAZKK-UHFFFAOYSA-N 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 description 1
- 229940071536 silver acetate Drugs 0.000 description 1
- 229940096017 silver fluoride Drugs 0.000 description 1
- REYHXKZHIMGNSE-UHFFFAOYSA-M silver monofluoride Chemical compound [F-].[Ag+] REYHXKZHIMGNSE-UHFFFAOYSA-M 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 229940023144 sodium glycolate Drugs 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical class NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 229960001124 trientine Drugs 0.000 description 1
- JEJAMASKDTUEBZ-UHFFFAOYSA-N tris(1,1,3-tribromo-2,2-dimethylpropyl) phosphate Chemical compound BrCC(C)(C)C(Br)(Br)OP(=O)(OC(Br)(Br)C(C)(C)CBr)OC(Br)(Br)C(C)(C)CBr JEJAMASKDTUEBZ-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
- C25D3/56—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
- This invention is based on the discovery that silver acts as a brightener, in what are essentially non-cyanide baths providing the silver ion concentration is maintained small by adding complexing or chelating agents to the bath, for example. Under these circumstances, the bath pH may be maintained over relatively wide pH values; 6 to 13 in contrast to the normal bright gold plating baths employing silver as an addition agent where the pH values in practice have been of the order of 12.
- the baths of the present invention may be operated at a pH of 6l3, there is a definite advantage in being able to operate a bright gold bath at a pH of 6.5 to 7.0, with a low content of free cyanide, especially when plating workpieces such as printed circuit boards where the solvent action of the alkaline cyanide bath on the copper-plastic laminate is a problem.
- This invention provides a bath which has relatively low susceptibility to the effect or".
- foreign ions such as nickel, copper and other base metal ions, which ions normally have a deleterious effect on brightness effected by the silver ion by virtue of the presence of the silver complexing agent which in general will complex higher valent cations more effectively.
- the objects of the invention are attained by providing an aqueous bath containing about 4-20 g./l. of potas sium gold cyanide, 25-300 mg./l. of silver ion and 5400 g./l. of one or more alkali metal salts. To this hath no free cyanide is added although a limited amount of free cyanide may be set free as the bath is operated.
- alkali metal gold cyanide provides the necessary gold ions for the orderly disposition of the gold, but does not supply sufiicient ions to provide the conductivity required for good commercial operation of the bath. Consequently, alkali metal such as sodium or, preferably potassium salts of organic acids, inorganic and organo-inorganic acids, (re added to provide the nectill essary conductivity.
- alkali metal sulfates, phosphates, nitrates, sulfamates, and the alkali metal salts of such organic acids as citrate, tartrate, lactate, as well as the organo-inorganic acid such as naphthalene sulfonic, benzene sulfonic acids are useful in this connection.
- the bath contains the following ingredients:
- Alkali hydroxide Suflicient to produce pH of 6.5l3 preferably pH 6.57.5.
- Chelating agent l to 50 g./l.
- the chelating or complexing agent for silver must be such that the silver ion concentration, with 5 to 50 grams per liter of the agent present, will be reduced to no more than that provided by potassium or sodium silver cyanide in the presence of free potassium cyanide. Otherwise, the silver salt must be kept at low concentration and fed frequently. If silver is added as potassium silver cyanide, as silver-sulfate, nitrate or other soluble silver salt, the available silver ions in the cathode film are considerable with the result that rapid deposition of silver along with the gold occurs.
- minor brightening agents such as potassium nickel and cobalt cyanides may be added to the aforedescribed bath to provide a small increase in brilliance, but in general, these materials are unnecessary and contribute to deposit brittleness.
- Example 1 In an amount of water sufficient to provide one liter of solution was dissolved:
- Example 2 in an amount of Water sufiicient to provide one liter of solution was added:
- Example 4 In an amount of water sufficient to provide one liter of solution was added:
- Example 5 In an amount of water sufiicient to provide one liter of solution was added:
- Triglycollamic acid gm Triglycollamic acid gm.
- Example 6 To the bath of Example 5, absent the silver nitrate, was added 145 mg./l. of silver sulfate. Again not all the silver salt dissolved at once, but a bright deposit was obtained.
- Silver salts silver fluoride, silver acetate.
- the above baths were normally operated at room temperature, but they can be operated up to a temperature of 45 C. Above this temperature hazy deposits are apt to be obtained.
- the baths can be operated at temperatures down to about 15 C.
- the normal current density range is 1 to 5 a.s.f. (0.1O.5 amp/43m?) depending upon the gold content, the temperature, and the rate of agitation. At higher temperatures, high gold content and very vigorous agitation, considerably higher current densities can be employed, but the control of commercial baths becomes somewhat more critical.
- agitation either solution volume or mechanical agitation is useful and, actually air agitation is etleetive for this bath in contrast to high free cyanide gold baths where the ethciency drops rapidly when air agitation is used.
- An aqueous electrolyte for the production of bright gold deposits consisting essentially of the following ingredients:
- KAu(CN) (calculated as Au) 4 to 20 g./l.
- KAg(CN) (calculated as Ag) 25 to 500 mg./l.
- Alkali metal conducting salt (other than cyanide) 5 to g./l.
- Alkali hydroxide to pH 6.513.
- Triglycollamic acid 5 to 10 g./l.
- An aqueous electrolyte for the production of bright gold deposits consisting essentially of the following ingredients:
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)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL273924D NL273924A (enrdf_load_stackoverflow) | 1961-01-24 | ||
| CH51162A CH399865A (fr) | 1961-01-24 | 1957-10-02 | Procédé de dépôt électrolytique d'or permettant d'obtenir des dépôts d'or brillant, et électrolyte pour la mise en oeuvre de ce procédé |
| US84517A US3174918A (en) | 1961-01-24 | 1961-01-24 | Bright gold electroplating |
| GB45060/61A GB939007A (en) | 1961-01-24 | 1961-12-15 | Bright gold electroplating |
| FR885252A FR1311023A (fr) | 1961-01-24 | 1962-01-18 | Procédé de dépôt électrolytique d'or permettant d'obtenir des dépôts d'or brillant, et électrolyte pour la mise en oeuvre de ce procédé |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84517A US3174918A (en) | 1961-01-24 | 1961-01-24 | Bright gold electroplating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3174918A true US3174918A (en) | 1965-03-23 |
Family
ID=22185447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US84517A Expired - Lifetime US3174918A (en) | 1961-01-24 | 1961-01-24 | Bright gold electroplating |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3174918A (enrdf_load_stackoverflow) |
| CH (1) | CH399865A (enrdf_load_stackoverflow) |
| FR (1) | FR1311023A (enrdf_load_stackoverflow) |
| GB (1) | GB939007A (enrdf_load_stackoverflow) |
| NL (1) | NL273924A (enrdf_load_stackoverflow) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3362895A (en) * | 1964-11-23 | 1968-01-09 | Sel Rex Corp | Electrodeposition of silver |
| US3902977A (en) * | 1973-12-13 | 1975-09-02 | Engelhard Min & Chem | Gold plating solutions and method |
| US4024031A (en) * | 1975-10-28 | 1977-05-17 | Amp Incorporated | Silver plating |
| US4168214A (en) * | 1978-06-14 | 1979-09-18 | American Chemical And Refining Company, Inc. | Gold electroplating bath and method of making the same |
| EP0241582A3 (en) * | 1982-10-29 | 1990-01-31 | Hans G.E. Wahlbeck | Method and apparatus for the manufacture of non-allergy creating precious metal objects |
| JP2008133533A (ja) * | 2006-11-01 | 2008-06-12 | Ne Chemcat Corp | 金−銀合金めっき液 |
| ITFI20120103A1 (it) * | 2012-06-01 | 2013-12-02 | Bluclad Srl | Bagni galvanici per l'ottenimento di una lega di oro a bassa caratura e processo galvanico che utilizza detti bagni. |
| CN115807248A (zh) * | 2022-12-08 | 2023-03-17 | 深圳市星嘉枫科技开发有限公司 | 一种镀银光亮剂及其制备方法 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406107A (en) * | 1964-12-07 | 1968-10-15 | Ibm | Non-cyanide silver plating bath |
| GB1294309A (en) | 1969-01-15 | 1972-10-25 | Pmd Chemicals Ltd | Electrodeposition of gold |
| DE2355581C3 (de) * | 1973-11-07 | 1979-07-12 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Galvanisches Glanzgoldbad mit hoher Abscheidungsgeschwindigkeit |
| CN117802543B (zh) * | 2024-01-10 | 2024-10-22 | 深圳市联合蓝海应用材料科技股份有限公司 | 用于制备耐磨抗氧化镀层的金银电镀液、电镀方法及产品 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2660554A (en) * | 1950-11-10 | 1953-11-24 | Barnet D Ostrow | Bright gold and gold alloy plating baths |
| US2967135A (en) * | 1960-06-08 | 1961-01-03 | Barnet D Ostrow | Electroplating baths for hard bright gold deposits |
-
0
- NL NL273924D patent/NL273924A/xx unknown
-
1957
- 1957-10-02 CH CH51162A patent/CH399865A/fr unknown
-
1961
- 1961-01-24 US US84517A patent/US3174918A/en not_active Expired - Lifetime
- 1961-12-15 GB GB45060/61A patent/GB939007A/en not_active Expired
-
1962
- 1962-01-18 FR FR885252A patent/FR1311023A/fr not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2660554A (en) * | 1950-11-10 | 1953-11-24 | Barnet D Ostrow | Bright gold and gold alloy plating baths |
| US2967135A (en) * | 1960-06-08 | 1961-01-03 | Barnet D Ostrow | Electroplating baths for hard bright gold deposits |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3362895A (en) * | 1964-11-23 | 1968-01-09 | Sel Rex Corp | Electrodeposition of silver |
| US3902977A (en) * | 1973-12-13 | 1975-09-02 | Engelhard Min & Chem | Gold plating solutions and method |
| US4024031A (en) * | 1975-10-28 | 1977-05-17 | Amp Incorporated | Silver plating |
| US4168214A (en) * | 1978-06-14 | 1979-09-18 | American Chemical And Refining Company, Inc. | Gold electroplating bath and method of making the same |
| EP0241582A3 (en) * | 1982-10-29 | 1990-01-31 | Hans G.E. Wahlbeck | Method and apparatus for the manufacture of non-allergy creating precious metal objects |
| JP2008133533A (ja) * | 2006-11-01 | 2008-06-12 | Ne Chemcat Corp | 金−銀合金めっき液 |
| ITFI20120103A1 (it) * | 2012-06-01 | 2013-12-02 | Bluclad Srl | Bagni galvanici per l'ottenimento di una lega di oro a bassa caratura e processo galvanico che utilizza detti bagni. |
| EP2669407A1 (en) * | 2012-06-01 | 2013-12-04 | Bluclad S.R.L. | Galvanic baths for obtaining a low-carat gold alloy, and galvanic process that uses said baths |
| CN115807248A (zh) * | 2022-12-08 | 2023-03-17 | 深圳市星嘉枫科技开发有限公司 | 一种镀银光亮剂及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB939007A (en) | 1963-10-09 |
| FR1311023A (fr) | 1962-11-30 |
| NL273924A (enrdf_load_stackoverflow) | |
| CH399865A (fr) | 1965-09-30 |
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