US1960029A - Electrodeposition of alloys - Google Patents
Electrodeposition of alloys Download PDFInfo
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- US1960029A US1960029A US576018A US57601831A US1960029A US 1960029 A US1960029 A US 1960029A US 576018 A US576018 A US 576018A US 57601831 A US57601831 A US 57601831A US 1960029 A US1960029 A US 1960029A
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- 229910045601 alloy Inorganic materials 0.000 title description 23
- 239000000956 alloy Substances 0.000 title description 23
- 238000004070 electrodeposition Methods 0.000 title description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 41
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 36
- 239000000243 solution Substances 0.000 description 33
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 19
- 229910052742 iron Inorganic materials 0.000 description 19
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 239000003792 electrolyte Substances 0.000 description 16
- 229910052759 nickel Inorganic materials 0.000 description 16
- 238000000034 method Methods 0.000 description 15
- 150000002739 metals Chemical class 0.000 description 13
- 235000019341 magnesium sulphate Nutrition 0.000 description 10
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- 238000000151 deposition Methods 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 6
- 229910001004 magnetic alloy Inorganic materials 0.000 description 6
- 159000000003 magnesium salts Chemical class 0.000 description 5
- 230000001376 precipitating effect Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 229910000531 Co alloy Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 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
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- QYHFIVBSNOWOCQ-UHFFFAOYSA-N selenic acid Chemical compound O[Se](O)(=O)=O QYHFIVBSNOWOCQ-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/24—Alloys obtained by cathodic reduction of all their ions
Definitions
- This invention relates to electrochemical'processes and more particularly to the electrodeposition of alloys.
- An object of this invention is to electrochemically deposit a nickel-iron alloy which will have a substantially uniform composition throughout and be tougher and more flexible than heretofore known.
- Another object is to maintain the separate anodes of the nickel and iron, that is, their surfaces exposed to the electrolytic solution, at the same potential during the operation of electrodepositing.
- an alloy of nickel and iron is electrodeposited in a manner :5 similar to that described in United States Patent 1,837,355, granted to R. M. Burns and C. W. Warner on December 22, 1931, with the exceptions that magnesium sulphate is used in place of sodium sulphate and that improved means are em- ;0 ployed for maintaining the ratio of the alloying metals in solution constant and for adjusting the anode areas exposed to the solution so that the anode areas are maintained at zero potential with respect to each other.
- the magnesium sulphate .5 forms no complex salts with the sulphates or chlorides of either nickel or iron and therefore does not form any complex ions insolution.
- the magnesium sulphate in solution has, because of its high solubility in water, a less 0 tendency to form precipitates, thereby producing alloy deposits of strikingly less internal tension as evidenced by the tendency of the deposit to coil up when stripped from the cathode.
- the ratio of the metals to be deposited in the alloy is main- 5 tained constant in the solution by providing separate anodes of nickel and iron and adjusting the anode areas in the solution so that the current flows through said anodes in the proper amount to replace the metal removed from the solution at the cathode.
- the principal features of the present invention resides in the use of magnesium sulphate in place of sodium sulphate in the electrolyte described in United States Patent 1,837,355, supra, and inthe methods of adjusting the current flows in the anodes and adjusting the anode areas in solution so that the ratio of alloying metals in solution remains constant and that the anode areas in solution are maintained at a zero potential with respect to each other.
- the vat 10 contains an electrolyte 11, the anodes 12 and 13 and the cathode 14.
- the battery 15 supplies a positive potential to the anodes -over cir cuit paths l6 and 17.
- the anodes are preferably connected to the battery 15 in the manner shown in the drawing, for example, path 16 includes an ammeter 19 and a suitable device such as that represented by a clamp 18 for holding the anode'12 in a raised or lowered position in the electrolyte 11 so that the anode area in the solution may be varied at will.
- the path 17 includes elements designated 21 and 22 which respectively correspond to those included in path 16.
- the currents flowing through the anodes are adjusted by means of the rheostat and any variation in the readings on the meter is adjusted by raising and lowering either anode by means of devices 18 or 21 so as to maintain a constant ratio between the readings.
- a constant concentration of the ions of each of the alloy metals is maintained in the electrolyte and the anode areas in solution are preferably such that the current per unit area is the same for each anode.
- This ratio may be, for example in the alloy just mentioned, to 95% nickel to 5% to 25% iron because of the difierences in the tendencies of these metals toward solution with normal ion concentration.
- the means described herein for adjusting the current and the anode surface areas in the solution are particularly satisfactory because anodes of equal size may be employed and any variation in the corrosion efliciency of the metals employed as anodes can be compensated for by raising or lowering the anodes during operation thereby varying the surface areas in the solution.
- the cathode 14 may be of any suitable composition andform, but where it is desired to strip the deposit from the cathode, it is preferable to employ a fiat cathode of a metal which may be stainless steel or of a material so treated that the deposited alloy does not adhere firmly to it.
- a fiat cathode of a metal which may be stainless steel or of a material so treated that the deposited alloy does not adhere firmly to it.
- nickel-iron allows satisfactory results have been obtained by employing a cathode of brass which has been treated either by dipping in selenic acid or by coating electrolytically in a solution of ammonium molybdate-
- the adhesion of the deposited alloy to the cathode may also be prevented by coating the cathode with graphite.
- cathode which may be employed is a large slowly rotating cylinder having a portion of its surface submerged in the electrolyte.
- the deposited alloy is removed from a cathode of the cylinder type as it leaves the electrolyte and a continuous strip of the alloy may thus be obtained.
- the product of the present invention is particularly desirable where it is preferred to produce the alloy in long continuous strips.
- a satisfactory electrolyte for producing an alloy of approximately 79% nickel and. 21% iron may be made by mixing the following ingredients:
- This electrolyte may be used satisfactorily in an electroplating process wherein is maintained, first, the electrolyte at a temperature of 50 to 60 C., secondly, the average of the instantaneous values of the current density at a point as high as 300 amperes per square foot, thirdly, the hydrogen ion concentration (pH) of the solution between 3 and 4.
- the ratio of the anode surface areas exposed to the solution is that required to give satisfactory current distribution through the anodes.
- the electrolyte and conditions of operation may be suitably modified for other proportions of iron and nickel.
- the scope of the present invention includes replacing the sodium sulphate with magnesium sulphate in the electrolyte employed in U. S. Patent 1,920,964, granted to R. M. Burns on August 8, 1933, to produce a tougher and more flexible nickel-iron-cobalt alloy. It also includes for the purpose of producing a tougher and more flexible deposit the use of magnesium sulphate in an electrolyte for electrodepositing iron, nickel or cobalt separately or magnetic alloys of these elements.
- cathode potentialcurrent density characteristics of the tw metals 7 to be deposited will be substantially co cident over the operating range of current densities.
- the cathode potential-current density characteristics are defined in United States Patent 1,837,355, supra.
- the method of electrolytically depositing a magnetic alloy of iron and nickel which comprises precipitating iron and nickel together upon a cathode from a solution including magnesium salts.
- the method of electrolytically depositing a magnetic alloy of nickel, iron and cobalt which comprises precipitating a separate electrolytic bath for each of said metals, adding magnesium salts to each of said electrolytic baths, mixing said electrolytic baths in proportions depending on the proportions of said metals desired in the alloy and passing a direct current through the composite electrolytic bath to precipitate an alloy of said metal substantially free from other materials present in the composite electrolytic bath.
- an electrolytic bath an anode of nickel and another anode of iron in said bath, a source of current, means for applying current from said source to said anode and adjusting said current at will' during operation to maintain the ratio of the nickel ions and iron ions in the solution constant, and means for varying at will during operation the respective surface areas of said anodes in the solution of said bath to maintain said areas at a ratio required to give satisfactory current distribution through the anodes, and a cathode immersed in said electrolytic bath which contains per liter of water the following ingredients:
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Description
May 22, 1934. A. G. RUSSELL 1,960,029
ELECTRODEPOSITION OF ALLOYS Filed Nov. 19, 1931 '2 l2 1 l /O i I 1.. i
Trfv J." 1
I H I INVENTOR AGRUSSELL ATTORNEY Patented May 22, 1934 UNITED STATES PATENT OFFICE ELECTRODEPOSITION OF ALLOYS Application November 19, 1931, Serial No. 576,018
12 Claims.
This invention relates to electrochemical'processes and more particularly to the electrodeposition of alloys.
An object of this invention is to electrochemically deposit a nickel-iron alloy which will have a substantially uniform composition throughout and be tougher and more flexible than heretofore known.
Another object is to maintain the separate anodes of the nickel and iron, that is, their surfaces exposed to the electrolytic solution, at the same potential during the operation of electrodepositing.
Heretofore in processes of electrodepositing, the
texture of the alloy deposited, particularly 'when deposited in the form of thin sheets, was too brittle for satisfactory handling. This is due primarily to the use of certain salts in the electro lyte which form complex ions which in turn tend go to increase the hardness and strength of the deposit. Some of the salts commonly used are those of sodium and ammonium and in solutions containing either of these salts complex ions are readily formed. Furthermore, in electrochemical processes heretofore developed wherein separate anodes of nickel and iron were employed in electrolytic baths, current was supplied over each anode during operation but no attempt was made to maintain the anodes at zero potential with re- ;0 spect to each other. This resulted in the formation of a deposit of metal from one anode on the anode of a lower potential.
According to the present invention an alloy of nickel and iron is electrodeposited in a manner :5 similar to that described in United States Patent 1,837,355, granted to R. M. Burns and C. W. Warner on December 22, 1931, with the exceptions that magnesium sulphate is used in place of sodium sulphate and that improved means are em- ;0 ployed for maintaining the ratio of the alloying metals in solution constant and for adjusting the anode areas exposed to the solution so that the anode areas are maintained at zero potential with respect to each other. The magnesium sulphate .5 forms no complex salts with the sulphates or chlorides of either nickel or iron and therefore does not form any complex ions insolution. Furthermore, the magnesium sulphate in solution has, because of its high solubility in water, a less 0 tendency to form precipitates, thereby producing alloy deposits of strikingly less internal tension as evidenced by the tendency of the deposit to coil up when stripped from the cathode. The ratio of the metals to be deposited in the alloy is main- 5 tained constant in the solution by providing separate anodes of nickel and iron and adjusting the anode areas in the solution so that the current flows through said anodes in the proper amount to replace the metal removed from the solution at the cathode.
The principal features of the present invention resides in the use of magnesium sulphate in place of sodium sulphate in the electrolyte described in United States Patent 1,837,355, supra, and inthe methods of adjusting the current flows in the anodes and adjusting the anode areas in solution so that the ratio of alloying metals in solution remains constant and that the anode areas in solution are maintained at a zero potential with respect to each other.
An embodiment of apparatus-for practicing the present invention is shown in the single figure of the drawing.
In the following description reference is made to one form of apparatus and one set of operating conditions which may be employed to deposit an alloy composed of 79% nickel and 21% iron. It is understood, however, that the invention is not limited to this particular apparatus nor to making the particular alloy. Other nickel-iron alloys such as those mentioned in United States Patent 1,837,355, supra, may be similarly electrodeposited by substituting in the electrolytic bath magnesium sulphate in place of sodium sulphate to produce results equally as well as that of the invention disclosed therein.
Other objects and features may be had by referring to the following detailed specification taken in conjunction with the accompanying drawing:
Referring to the drawing a diagrammatic view of the electrodepositing apparatus is shown with the front portion of the vat removed. The vat 10 contains an electrolyte 11, the anodes 12 and 13 and the cathode 14. The battery 15 supplies a positive potential to the anodes -over cir cuit paths l6 and 17. The anodes are preferably connected to the battery 15 in the manner shown in the drawing, for example, path 16 includes an ammeter 19 and a suitable device such as that represented by a clamp 18 for holding the anode'12 in a raised or lowered position in the electrolyte 11 so that the anode area in the solution may be varied at will. The path 17 includes elements designated 21 and 22 which respectively correspond to those included in path 16. A rheostat 20, common to both, connects these paths to battery 15. The currents flowing through the anodes are adjusted by means of the rheostat and any variation in the readings on the meter is adjusted by raising and lowering either anode by means of devices 18 or 21 so as to maintain a constant ratio between the readings. In this way a constant concentration of the ions of each of the alloy metals is maintained in the electrolyte and the anode areas in solution are preferably such that the current per unit area is the same for each anode. When depositing a nickel-iron alloy composed of 79% nickel and 21% iron, satisfactory results have been obtained by employing anodes having surface areas in the solution in a ratio which will give the desired current distribution through the anodes. This ratio may be, for example in the alloy just mentioned, to 95% nickel to 5% to 25% iron because of the difierences in the tendencies of these metals toward solution with normal ion concentration. The means described herein for adjusting the current and the anode surface areas in the solution are particularly satisfactory because anodes of equal size may be employed and any variation in the corrosion efliciency of the metals employed as anodes can be compensated for by raising or lowering the anodes during operation thereby varying the surface areas in the solution.
The cathode 14 may be of any suitable composition andform, but where it is desired to strip the deposit from the cathode, it is preferable to employ a fiat cathode of a metal which may be stainless steel or of a material so treated that the deposited alloy does not adhere firmly to it. In depositing nickel-iron allows satisfactory results have been obtained by employing a cathode of brass which has been treated either by dipping in selenic acid or by coating electrolytically in a solution of ammonium molybdate- The adhesion of the deposited alloy to the cathode may also be prevented by coating the cathode with graphite. Another form of cathode which may be employed is a large slowly rotating cylinder having a portion of its surface submerged in the electrolyte. The deposited alloy is removed from a cathode of the cylinder type as it leaves the electrolyte and a continuous strip of the alloy may thus be obtained. The product of the present invention is particularly desirable where it is preferred to produce the alloy in long continuous strips.
A satisfactory electrolyte for producing an alloy of approximately 79% nickel and. 21% iron may be made by mixing the following ingredients:
Grams NiSOiHHiO 212 FeSOflHzO 22 NiCl2.6H2O 18 FeClz.4HzO 2.5 H3130 25 Mgsolflmo 125 and adding suflicient water to make one liter of solution. This electrolyte may be used satisfactorily in an electroplating process wherein is maintained, first, the electrolyte at a temperature of 50 to 60 C., secondly, the average of the instantaneous values of the current density at a point as high as 300 amperes per square foot, thirdly, the hydrogen ion concentration (pH) of the solution between 3 and 4. The ratio of the anode surface areas exposed to the solution is that required to give satisfactory current distribution through the anodes. The electrolyte and conditions of operation may be suitably modified for other proportions of iron and nickel.
The scope of the present invention includes replacing the sodium sulphate with magnesium sulphate in the electrolyte employed in U. S. Patent 1,920,964, granted to R. M. Burns on August 8, 1933, to produce a tougher and more flexible nickel-iron-cobalt alloy. It also includes for the purpose of producing a tougher and more flexible deposit the use of magnesium sulphate in an electrolyte for electrodepositing iron, nickel or cobalt separately or magnetic alloys of these elements.
It will be found in using the above-mentioned electrolyte when subjected to the conditions set forth above that the cathode potentialcurrent density characteristics of the tw metals 7 to be deposited will be substantially co cident over the operating range of current densities. The cathode potential-current density characteristics are defined in United States Patent 1,837,355, supra.
What is claimed is:
l. The method of electrolytically depositing a metallic substance consisting of elements of the iron-nickel-cobalt group whichcomprises precipitating said metallic substance upon a cathode from a solution including magnesium salts.
2. The method of electrolytically depositing a magnetic alloy of iron and nickel which comprises precipitating iron and nickel together upon a cathode from a solution including magnesium salts.
3. The method of electrolytically depositing a magnetic alloy of iron and cobalt which comprises precipitating said metal upon a cathode from a solution including magnesium salts.
4. The method of electrolytically depositing a magnetic alloy of iron, nickel and cobalt which comprises precipitating said metals together upon a cathode from a solution including magnesium salts.-
5. A method according to claim 2 wherein the salts used in the solution is magnesium sulphate.
6. A method according to claim 2 wherein the solution includes nickel, iron and magnesium sulphates.
7. The method of electrolytically depositing a magnetic alloy of nickel, iron and cobalt which comprises precipitating a separate electrolytic bath for each of said metals, adding magnesium salts to each of said electrolytic baths, mixing said electrolytic baths in proportions depending on the proportions of said metals desired in the alloy and passing a direct current through the composite electrolytic bath to precipitate an alloy of said metal substantially free from other materials present in the composite electrolytic bath.
8. The method of simultaneously electrodepositing a magnetic alloy of metals of the nickeliron-cobalt group of uniform composition and of a tenacious texture which consists in immersing anodes of the metal constituting the alloy in an electrolytic bath containing a soluble sulphate and a soluble chloride of each of the metals to be deposited, and a buffer mixture comprising a boric acid and magnesium sulphate, passing through the anodes in parallel, the electrolytic bath and cathode, direct current of values depending on the alloy desired and the number of anodes employed in the solution, and adjusting said current to a definite ratio so that the concentration in the solution of the ions of each of the metals composing the alloy remain substantially constant during operation, and varying at will during operation the anode surface areas exposed to the solution so as to maintain said surface areas at zero potential with respect to each other.
9. A method according to claim 8 wherein the anode surface area exposed to the solution is varied by raising or lowering one or all anodes in or out of the solution.
10. The method of producing an alloy of approximately '79% nickel and 21% iron which consists in simultaneously electrodepositing the two metals in the desired proportion from an electrolyte which contains per liter of waterthe following ingredients:
. Grams NiSO4.7H2O 212 FeSO4.7I-IzO 22 NiC12.6H2O 18 FC12.4H2O -L 2. 5 H3303 25 MgSO4.7H2O 125 sulphate and boric acid, means for applying poof said J 3 tentials at a certain ratio to said anodes, and
means for varying at will during operation the anode surface areas in the electrolyte to maintain said surface areas at zero potential with respect to each other.
12. In an apparatus for depositing an alloy 0! approximately 79% nickel and 21% iron, an electrolytic bath, an anode of nickel and another anode of iron in said bath, a source of current, means for applying current from said source to said anode and adjusting said current at will' during operation to maintain the ratio of the nickel ions and iron ions in the solution constant, and means for varying at will during operation the respective surface areas of said anodes in the solution of said bath to maintain said areas at a ratio required to give satisfactory current distribution through the anodes, and a cathode immersed in said electrolytic bath which contains per liter of water the following ingredients:
Grams NiSO4.'7H2O "212 FeSO4.7H20 22 NiCl2.6H2O 18 FeClzAHzO 2. 5 H3303 25 MgSO4.7H-2O 125 ALEXANDER G. RUSSELL.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2840517A (en) * | 1957-07-10 | 1958-06-24 | Rockwell Spring & Axle Co | Nickel-iron-zinc alloy electroplating |
US2859415A (en) * | 1952-09-03 | 1958-11-04 | Bell Telephone Labor Inc | Ultrasonic acoustic wave transmission delay lines |
US3354059A (en) * | 1964-08-12 | 1967-11-21 | Ibm | Electrodeposition of nickel-iron magnetic alloy films |
US3399122A (en) * | 1964-09-10 | 1968-08-27 | Ibm | Electrodeposition of a magnetostrictive magnetic alloy upon a chain-store element |
US3506547A (en) * | 1967-09-18 | 1970-04-14 | Ibm | Nickel-iron electrolytes containing hydrolyzing metal ions and process of electro-depositing ferromagnetic films |
US3533922A (en) * | 1968-06-26 | 1970-10-13 | Honeywell Inc | Composition and process for plating ferromagnetic film |
US20080179192A1 (en) * | 2007-01-26 | 2008-07-31 | International Business Machines Corporation | Multi-anode system for uniform plating of alloys |
-
1931
- 1931-11-19 US US576018A patent/US1960029A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2859415A (en) * | 1952-09-03 | 1958-11-04 | Bell Telephone Labor Inc | Ultrasonic acoustic wave transmission delay lines |
US2840517A (en) * | 1957-07-10 | 1958-06-24 | Rockwell Spring & Axle Co | Nickel-iron-zinc alloy electroplating |
US3354059A (en) * | 1964-08-12 | 1967-11-21 | Ibm | Electrodeposition of nickel-iron magnetic alloy films |
US3399122A (en) * | 1964-09-10 | 1968-08-27 | Ibm | Electrodeposition of a magnetostrictive magnetic alloy upon a chain-store element |
US3506547A (en) * | 1967-09-18 | 1970-04-14 | Ibm | Nickel-iron electrolytes containing hydrolyzing metal ions and process of electro-depositing ferromagnetic films |
US3533922A (en) * | 1968-06-26 | 1970-10-13 | Honeywell Inc | Composition and process for plating ferromagnetic film |
US20080179192A1 (en) * | 2007-01-26 | 2008-07-31 | International Business Machines Corporation | Multi-anode system for uniform plating of alloys |
US8177945B2 (en) * | 2007-01-26 | 2012-05-15 | International Business Machines Corporation | Multi-anode system for uniform plating of alloys |
US8551303B2 (en) | 2007-01-26 | 2013-10-08 | International Business Machines Corporation | Multi-anode system for uniform plating of alloys |
US8623194B2 (en) | 2007-01-26 | 2014-01-07 | International Business Machines Corporation | Multi-anode system for uniform plating of alloys |
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