US3558442A - Electroplating a ductile zinc-nickel alloy onto strip steel - Google Patents
Electroplating a ductile zinc-nickel alloy onto strip steel Download PDFInfo
- Publication number
- US3558442A US3558442A US795713*A US3558442DA US3558442A US 3558442 A US3558442 A US 3558442A US 3558442D A US3558442D A US 3558442DA US 3558442 A US3558442 A US 3558442A
- Authority
- US
- United States
- Prior art keywords
- nickel
- bath
- zinc
- coating
- electroplating
- 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
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 title abstract description 13
- 238000009713 electroplating Methods 0.000 title abstract description 9
- 229910000990 Ni alloy Inorganic materials 0.000 title description 7
- 229910000831 Steel Inorganic materials 0.000 title description 7
- 239000010959 steel Substances 0.000 title description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 39
- 238000000576 coating method Methods 0.000 abstract description 28
- 239000011248 coating agent Substances 0.000 abstract description 26
- 229910052759 nickel Inorganic materials 0.000 abstract description 19
- 238000007747 plating Methods 0.000 abstract description 15
- 239000011701 zinc Substances 0.000 abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052725 zinc Inorganic materials 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 229910001297 Zn alloy Inorganic materials 0.000 abstract description 3
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 239000000080 wetting agent Substances 0.000 description 5
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 4
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 4
- 235000005074 zinc chloride Nutrition 0.000 description 4
- 239000011592 zinc chloride Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- LQZZUXJYWNFBMV-UHFFFAOYSA-N 1-dodecanol group Chemical class C(CCCCCCCCCCC)O LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 102100039555 Galectin-7 Human genes 0.000 description 1
- 101000887163 Gallus gallus Gallinacin-4 Proteins 0.000 description 1
- 101000887166 Gallus gallus Gallinacin-7 Proteins 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 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
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
Definitions
- a method of electroplating a nickel-zinc alloy on a steel strip is described, in which the plating bath is maintained within a selected pH range, through use of a preselected ratio of nickel to zinc in the bath, and a preselected plating current density, whereby an electroplated coating is formed having a nickel content of from 9.5 to 12.5%, which coating has a low internal stress, and increased resistance to corrosion.
- the corrosion resistance or salt spray life, in hours, of the flat coating is increased from 122 hours to 160 hours and 156 hours respectively
- the salt spray life of the bent edge of the coating is increased from 133 hours to 156 hours and 172 hours respectively
- the salt spray life of the bent edge of the coating is increased from 98 hours to 133 hours and 145 hours respectively.
- Ni-Zn metal ratio 0. 63 0. 60 0. 56 0. 59 0. 58
- plating bath having a pH of from 2.5 to 3.5, in which nickel chloride and zinc chloride have been dissolved in sufficient amounts for each gallon of the bath to have a zinc content of from 8 to 10 ounces and a nickel content of from 4 to 5 ounces, and in which the strip is made a cathode as it passes through the bath, and an electroplating current density of 50 to 100 amperes per square foot of cathode surface of the strip is maintained, whereby a zinc-nickel alloy coating is electrodeposited on the steel strip, the alloy consisting of from 6.5 to 9.5% nickel with the remainder zinc.
- the bath is maintained at a temperature of from to F.
- the aforesaid coating is characterized by the fact that it has an expansive internal stress of about 500 to 1400 p.s.i., and has substantially greater corrosion resistance than zinc.
- the zinc in the bath is provided in the form of zinc chloride (ZnCl and the nickel in the form of nickel chloride (NiCl 6H O)
- the wetting agent is used to lower the surface tension of the bath to eliminate pitting, if encountered, and to improve the uniformity of deposit appearance.
- the identity of the wetting agents chosen is not important, although they must, of course, be compatible with the bath and cause no deleterious effects.
- Some of the wetting agents used in commercial nickel plating have been found to be satisfactory, as, for example, sulfated or sulfonated lauryl alcohol, one of the commonest so used. Others which produce less foam may be preferred, but the selection of such Wetting agents most suitable for specific conditions is well within the knowledge of those skilled in the art of electroplating, there being a wide variety available from purveyors of materials for nickel plating processes.
- the pH value of the bath should be maintained between 4.0 and 4.5, the bath temperature at 125-135 F., the current density at 40-100 a.s.f., and the percentage of nickel in the deposit within the range of 9.5 to 12.5%, with 11% as the optimum. Chanpes in the nickel content of the deposit, within this range are efiected primarily by changing the nickel-zinc metal ratio in the bath. An increase in the pH value of the bath beyond 4.5 is undesirable, due to the fact that this results in an increase in the expansive stress produced in the deposit.
- the method of plating steel strip with a zinc-nickel alloy which comprises: causing the strip to traverse an aqueous plating bath having a pH of from 4.0 to 4.5, in which nickel chloride and zinc chloride have been dissolved in sufficient amounts for each gallon of the bath to have a zinc content of from 7 to 9 ounces and a nickel content of from 4 to ounces; making said strip a cathode as it passes through said bath and maintaining an electroplating current density of from 40 to 100 amperes per square foot of cathode surface of the strip, whereby a zinc-nickel alloy coating is electrodeposited on the steel strip, said zinc-nickel alloy consisting of from 9.5 to
- a method of plating a metallic article with a zincnickel alloy which comprises: coating the article in an aqueous plating bath having a pH of from 4.0 to 4.5, in which nickel chloride and zinc chloride have been dissolved in sufiicient amounts for each gallon of the bath to have a zinc content of from 7 to 9 ounces and a nickel content of from 4 to 5 ounces; making the article a cathode in the bath and maintaining an electroplating current density of from to amperes per square foot of cathode surface of the article, whereby a zinc-nickel alloy coating is electrodeposited on the article, said zincnickel alloy consisting of from 9.5 to 12.5% nickel with the remainder zinc, and which coating has substantially greater corrosion resistance than a coating produced under like condition, but having a pH value of the bath of less' than 4.
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79571369A | 1969-01-31 | 1969-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3558442A true US3558442A (en) | 1971-01-26 |
Family
ID=25166262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US795713*A Expired - Lifetime US3558442A (en) | 1969-01-31 | 1969-01-31 | Electroplating a ductile zinc-nickel alloy onto strip steel |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3558442A (d) |
| JP (1) | JPS4932172B1 (d) |
| BE (1) | BE736791A (d) |
| ES (1) | ES371102A1 (d) |
| FR (1) | FR2029731A1 (d) |
| GB (1) | GB1224680A (d) |
| LU (1) | LU59192A1 (d) |
| NL (1) | NL140293B (d) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3011991A1 (de) * | 1979-03-30 | 1980-10-02 | Sumitomo Metal Ind | Verfahren zur elektroplattierung eines stahlbandes mit einer zn-ni- legierung |
| FR2468661A1 (fr) * | 1979-08-22 | 1981-05-08 | Thomas Steel Strip Corp | Procede et appareil de placage electrolytique de revetement ni/zn projecteurs sur des supports metalliques |
| US4351713A (en) * | 1979-08-22 | 1982-09-28 | Thomas Steel Strip Corp. | Electro-co-deposition of corrosion resistant nickel/zinc alloys onto steel substrates |
| US4374902A (en) * | 1981-02-11 | 1983-02-22 | National Steel Corporation | Nickel-zinc alloy coated steel sheet |
| DE3231054A1 (de) * | 1981-08-21 | 1983-03-03 | Ebara-Udylite Co. Ltd., Tokyo | Waessriges elektrolytbad zur kathodischen abscheidung von zink-nickel-legierungen und seine verwendung |
| US4388160A (en) * | 1980-02-20 | 1983-06-14 | Rynne George B | Zinc-nickel alloy electroplating process |
| US4407149A (en) * | 1981-02-11 | 1983-10-04 | National Steel Corporation | Process for forming a drawn and ironed container |
| US4411964A (en) * | 1980-12-24 | 1983-10-25 | Nippon Kokan Kabushiki Kaisha | Composite coating steel sheets having good corrosion resistance paintability and corrosion resistance after paint coating |
| US4457450A (en) * | 1981-02-11 | 1984-07-03 | National Steel Corporation | Nickel-zinc alloy coated drawn and ironed can |
| DE3414048A1 (de) * | 1984-04-13 | 1985-10-17 | Nisshin Steel Co., Ltd., Tokio/Tokyo | Verfahren zum herstellen von mit einer zink-nickel-legierung galvanisierten stahlteilen |
| US4765871A (en) * | 1981-12-28 | 1988-08-23 | The Boeing Company | Zinc-nickel electroplated article and method for producing the same |
| US5604040A (en) * | 1991-08-09 | 1997-02-18 | Associated Universities, Inc. | Zinc phosphate conversion coatings |
-
1969
- 1969-01-31 US US795713*A patent/US3558442A/en not_active Expired - Lifetime
- 1969-07-07 JP JP44054056A patent/JPS4932172B1/ja active Pending
- 1969-07-23 GB GB37151/69A patent/GB1224680A/en not_active Expired
- 1969-07-29 FR FR6925904A patent/FR2029731A1/fr active Pending
- 1969-07-30 LU LU59192D patent/LU59192A1/xx unknown
- 1969-07-30 BE BE736791D patent/BE736791A/xx not_active IP Right Cessation
- 1969-08-21 NL NL696912739A patent/NL140293B/xx not_active IP Right Cessation
-
1971
- 1971-09-01 ES ES371102A patent/ES371102A1/es not_active Expired
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249999A (en) * | 1979-03-30 | 1981-02-10 | Sumitomo Metal Industries, Ltd. | Electrolytic zinc-nickel alloy plating |
| DE3011991A1 (de) * | 1979-03-30 | 1980-10-02 | Sumitomo Metal Ind | Verfahren zur elektroplattierung eines stahlbandes mit einer zn-ni- legierung |
| FR2468661A1 (fr) * | 1979-08-22 | 1981-05-08 | Thomas Steel Strip Corp | Procede et appareil de placage electrolytique de revetement ni/zn projecteurs sur des supports metalliques |
| US4282073A (en) * | 1979-08-22 | 1981-08-04 | Thomas Steel Strip Corporation | Electro-co-deposition of corrosion resistant nickel/zinc alloys onto steel substrates |
| US4351713A (en) * | 1979-08-22 | 1982-09-28 | Thomas Steel Strip Corp. | Electro-co-deposition of corrosion resistant nickel/zinc alloys onto steel substrates |
| US4388160A (en) * | 1980-02-20 | 1983-06-14 | Rynne George B | Zinc-nickel alloy electroplating process |
| US4411964A (en) * | 1980-12-24 | 1983-10-25 | Nippon Kokan Kabushiki Kaisha | Composite coating steel sheets having good corrosion resistance paintability and corrosion resistance after paint coating |
| US4407149A (en) * | 1981-02-11 | 1983-10-04 | National Steel Corporation | Process for forming a drawn and ironed container |
| US4374902A (en) * | 1981-02-11 | 1983-02-22 | National Steel Corporation | Nickel-zinc alloy coated steel sheet |
| US4457450A (en) * | 1981-02-11 | 1984-07-03 | National Steel Corporation | Nickel-zinc alloy coated drawn and ironed can |
| DE3231054A1 (de) * | 1981-08-21 | 1983-03-03 | Ebara-Udylite Co. Ltd., Tokyo | Waessriges elektrolytbad zur kathodischen abscheidung von zink-nickel-legierungen und seine verwendung |
| DE3231054C2 (d) * | 1981-08-21 | 1989-04-27 | Ebara-Udylite Co. Ltd., Tokio/Tokyo, Jp | |
| US4765871A (en) * | 1981-12-28 | 1988-08-23 | The Boeing Company | Zinc-nickel electroplated article and method for producing the same |
| DE3414048A1 (de) * | 1984-04-13 | 1985-10-17 | Nisshin Steel Co., Ltd., Tokio/Tokyo | Verfahren zum herstellen von mit einer zink-nickel-legierung galvanisierten stahlteilen |
| US5604040A (en) * | 1991-08-09 | 1997-02-18 | Associated Universities, Inc. | Zinc phosphate conversion coatings |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1958529A1 (de) | 1970-08-06 |
| LU59192A1 (d) | 1970-01-30 |
| DE1958529B2 (de) | 1977-01-27 |
| GB1224680A (en) | 1971-03-10 |
| BE736791A (d) | 1970-01-30 |
| FR2029731A1 (d) | 1970-10-23 |
| ES371102A1 (es) | 1972-03-01 |
| JPS4932172B1 (d) | 1974-08-28 |
| NL6912739A (d) | 1970-08-04 |
| NL140293B (nl) | 1973-11-15 |
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