US3083150A - Process for the electro-plating of cadmium-titanium alloy - Google Patents
Process for the electro-plating of cadmium-titanium alloy Download PDFInfo
- Publication number
- US3083150A US3083150A US93356A US9335661A US3083150A US 3083150 A US3083150 A US 3083150A US 93356 A US93356 A US 93356A US 9335661 A US9335661 A US 9335661A US 3083150 A US3083150 A US 3083150A
- Authority
- US
- United States
- Prior art keywords
- cadmium
- titanium
- plating
- grams
- cyanide
- 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
- 238000009713 electroplating Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title description 17
- VIROINNDOPNTDI-UHFFFAOYSA-N cadmium titanium Chemical compound [Ti].[Cd] VIROINNDOPNTDI-UHFFFAOYSA-N 0.000 title description 9
- 229910001069 Ti alloy Inorganic materials 0.000 title description 8
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 22
- 229910052793 cadmium Inorganic materials 0.000 claims description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 16
- 239000010936 titanium Substances 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 16
- NHMJUOSYSOOPDM-UHFFFAOYSA-N cadmium cyanide Chemical compound [Cd+2].N#[C-].N#[C-] NHMJUOSYSOOPDM-UHFFFAOYSA-N 0.000 claims description 10
- 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 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims 1
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 238000007747 plating Methods 0.000 description 18
- 238000000576 coating method Methods 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 150000003608 titanium Chemical class 0.000 description 5
- 150000003609 titanium compounds Chemical class 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005246 galvanizing Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 4
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 229910000925 Cd alloy Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- -1 alkali metal cyanide Chemical class 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- JBNOVHJXQSHGRL-UHFFFAOYSA-N 7-amino-4-(trifluoromethyl)coumarin Chemical compound FC(F)(F)C1=CC(=O)OC2=CC(N)=CC=C21 JBNOVHJXQSHGRL-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 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
- 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
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 150000001661 cadmium Chemical class 0.000 description 1
- QCUOBSQYDGUHHT-UHFFFAOYSA-L cadmium sulfate Chemical compound [Cd+2].[O-]S([O-])(=O)=O QCUOBSQYDGUHHT-UHFFFAOYSA-L 0.000 description 1
- 229910000331 cadmium sulfate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 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
Definitions
- This invention relates to a process for the electroplating of cadmium-titanium alloy, wherein a titanium compound is dissolved in a cadmium cyanide plating bath and the solution is subjected to electrolysis, using a conventional cadmium as anode, in order to obtain an anticorrosive coating consisting of an alloy of cadmium with titanium.
- titanium salts namely, titanium sulfate, chloride, fluoride, oxalate, citrate, tartrate, etc. are soluble in neutral or acidic aqueous solutions, but are insoluble in alkaline aqueous solutions producing quite a precipitate of titanium hydroxide by hydrolysis reaction.
- the main object of the present invention to provide a novel electro-plating process to produce more efiicient and superior anti-corrosive coatings in an economical and industrial manner than conventional cadmium coating methods.
- Another object of the invention is to provide a novel electro-plating process, in which coatings consisting of cadmium-titanium alloy may be produced in an remarkably effective manner.
- a further object of the invention is to provide a novel electro-plating process to obtain plating coatings of relatively higher surface-hardness than conventional cadmium platings.
- This invention is the method in which cadmiumtitanium alloy plating is obtained by electrolysis of a cadmium cyanide plating bath being gradually added to a special titanium compound.
- Sodium pertitanate is a stable in an alkaline cadmium cyanide plating solution of pH-values 13-14, and does not tend to precipitate by hydrolysis in the solution or to be reduced to a metallic state by hydrogen activated by cadmium with high hydrogen over voltage on the cathode. Thereafter, it easily alloys cadmium of the packed hexagonal system, crystalline structure. This fact is determined by the Mattauchs mass-spectrum analysis.
- cadmium-titanium alloy coating shows a higher anti-corrosive quality several times as strong as a conventional cadmium plating, determined by a number of tests using salt spray and by exposure tests, There are apparently considerable differences in electron microscopic structure between cadmium-titanium alloy coating and conventional cadmium alloy coating.
- the plated surface according to this method is not only excellent in anti-corrosive and uniform qualities, but also has a satisfactory mechanical workability after being plated for pressing, deep-drawing, and bending, in addition to a comparatively higher hardness than a conventional cadmium plating.
- This plating may be carried into effect with a current density of 2-5 amperes per square decimeter with a high throwing power.
- the process may be carried into effect with use of a current density of l-3 amperes per square decimeter, with equal results.
- Example 1 To a cadmium plating bath, containing 30 grams of cadmium cyanide, 50 grams of sodium cyanide and 20 grams of caustic soda per litre of solution, is continuously added the titanium compound obtained by the additional reaction of orthotitanic acid with hydrogen peroxide so as to maintain the concentration at a rate each of 0.5-1 gram per litre of liquid, in such a way that the liquid is continuously passed through a filter charged with the said compound.
- the galvanization is carried into effect, using a conventional cadmium plate as anode, with a cathodic current density of 4 amperes per square decimeter for 15 minutes, thus obtaining a uniform, bright, superior and well-deposited layer of cadmium-titanium alloy.
- the thus coated layer is 20 microns in thickness and contains about 0.3% of titanium as determined by the spectrum analysis, and perfectly certified by the Mattauchs mass analysis that titanium in the layer remains in a metallic state.
- cadmium-titanium alloy coatings may be produced by a simple technique and with substantially more effective and superior anti-corrosive characteristics than those obtainable by conventional cadmium plating.
- the process according to this invention represents a highly advantageous galvanizing method, which is easily carried into practice in an economical and industrial manner.
- cadmium cyanide 50 grams of an alkali metal cyanide 0.5-1 gram of sodium pertitanate sufiicient quantity of alkali to maintain a pH of between 2.
- An aqueous electrolytic bath for electroplating an alloy consisting of cadmium and titanium employing a cadmium anode containing the following compounds in grams per liter of water:
- a method for electroplating an alloy consisting of cadmium and titanium comprising utilizing a cadmium anode, employing an aqueous electrolytic bath containing the following compounds in grams per liter of Water:
- a method for electroplating an alloy consisting of cadmium and titanium comprising utilizing a cadmium anode, employing an aqueous electrolytic bath containing the following compounds in grams per liter of water:
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)
- Electrolytic Production Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP350661 | 1961-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3083150A true US3083150A (en) | 1963-03-26 |
Family
ID=11559225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US93356A Expired - Lifetime US3083150A (en) | 1961-02-07 | 1961-03-06 | Process for the electro-plating of cadmium-titanium alloy |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3083150A (de) |
| CH (1) | CH423403A (de) |
| DE (1) | DE1229363B (de) |
| GB (1) | GB918904A (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529487A (en) * | 1983-09-29 | 1985-07-16 | The Boeing Company | Coating for increasing corrosion resistance and reducing hydrogen reembrittlement of metal articles |
| US4612236A (en) * | 1983-09-29 | 1986-09-16 | The Boeing Company | Coating for increasing corrosion resistance and reducing hydrogen reembrittlement of metal articles |
| CN107245732A (zh) * | 2017-06-28 | 2017-10-13 | 无锡市恒利弘实业有限公司 | 一种在304或316l不锈钢表面电镀高强度耐腐蚀镉锡钛合金的方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2646397A (en) * | 1950-11-18 | 1953-07-21 | Wean Engineering Co Inc | Electroplating zinc using titanium containing electrolyte |
| GB762199A (en) * | 1954-01-20 | 1956-11-28 | Michel Robert | Improvements in processes for the electrolytic protection of metals |
| FR1215884A (fr) * | 1958-11-21 | 1960-04-21 | Applic De Materiel Electr Soc | Perfectionnements à l'électrodéposition du titane |
-
1961
- 1961-03-06 US US93356A patent/US3083150A/en not_active Expired - Lifetime
- 1961-07-05 CH CH1020261A patent/CH423403A/de unknown
- 1961-08-12 DE DET20593A patent/DE1229363B/de active Pending
- 1961-08-18 GB GB29945/61A patent/GB918904A/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2646397A (en) * | 1950-11-18 | 1953-07-21 | Wean Engineering Co Inc | Electroplating zinc using titanium containing electrolyte |
| GB762199A (en) * | 1954-01-20 | 1956-11-28 | Michel Robert | Improvements in processes for the electrolytic protection of metals |
| FR1215884A (fr) * | 1958-11-21 | 1960-04-21 | Applic De Materiel Electr Soc | Perfectionnements à l'électrodéposition du titane |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529487A (en) * | 1983-09-29 | 1985-07-16 | The Boeing Company | Coating for increasing corrosion resistance and reducing hydrogen reembrittlement of metal articles |
| US4612236A (en) * | 1983-09-29 | 1986-09-16 | The Boeing Company | Coating for increasing corrosion resistance and reducing hydrogen reembrittlement of metal articles |
| CN107245732A (zh) * | 2017-06-28 | 2017-10-13 | 无锡市恒利弘实业有限公司 | 一种在304或316l不锈钢表面电镀高强度耐腐蚀镉锡钛合金的方法 |
| CN107245732B (zh) * | 2017-06-28 | 2019-03-12 | 无锡市恒利弘实业有限公司 | 一种在304或316l不锈钢表面电镀高强度耐腐蚀镉锡钛合金的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB918904A (en) | 1963-02-20 |
| CH423403A (de) | 1966-10-31 |
| DE1229363B (de) | 1966-11-24 |
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