GB1023953A - Improvements in and relating to methods of electrolessly plating nickle-iron alloys - Google Patents
Improvements in and relating to methods of electrolessly plating nickle-iron alloysInfo
- Publication number
- GB1023953A GB1023953A GB4770862A GB4770862A GB1023953A GB 1023953 A GB1023953 A GB 1023953A GB 4770862 A GB4770862 A GB 4770862A GB 4770862 A GB4770862 A GB 4770862A GB 1023953 A GB1023953 A GB 1023953A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- value
- plating
- substrate
- hypophosphite
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/48—Coating with alloys
- C23C18/50—Coating with alloys with alloys based on iron, cobalt or nickel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
- H01F41/24—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/18—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material
- H05K3/181—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material by electroless plating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemically Coating (AREA)
Abstract
<PICT:1023953/C6-C7/1> Nickel-iron alloy is electrolessly deposited on a substrate e.g. glass, plastic or ceramic by cleaning the substrate, e.g. with NaOH, HF or NH4F solution, preparing an acid Ni-Fe hypophosphite plating solution wherein the ratio of Ni to Fe ions is less than 1 and the pH value is 4, adding palladium ions to the solution, then adding a base to increase the pH value to 9.2, inserting the cleaned substrate into the solution and removing therefrom when the desired thickness of coating has been deposited. The plating solution may be prepared at room temperature by dissolving 0.5 g. sodium hypophosphite, 1.5 g. sodium potassium tartrate (Rochelle salt), either 1 g. ferrous ammonium sulphate or 1.5 g. ferrous chloride hydrate, either 0.7 g. nickelous sulphate hydrate or 0.2 g. nickelous chloride hydrate, in 20 ml. water and adding sulphuric or hydrochloric acid to bring the pH value to 4, adding 0.5 ml. of a 0.1% PdCl2 solution containing 0.1% HCl, and then adding 3.5 ml. of 29% NH4OH to bring the pH value to 9.2. A second plating layer is preferably electrolessly deposited over the first from a Ni-Fe hypophosphite plating solution at 75 DEG C. comprising 20-50 g./l. nickelous chloride hydrate, an amount of ferrous chloride e.g. 25 g./l. corresponding to a ratio of Ni to Fe ions 1.48 to 2.73, 50-150 g./l. sodium potassium tartrate, 10-50 g./l. sodium hypophosphite and enough NH4OH to bring the pH value to 8-12. The second plating layer may be of composition 75-81% Ni, less than 1% P and balance Fe, and made anisotropically ferromagnetic for forming magnetic storage elements (see Division H1) by locating the substrate e.g. one or more glass cylinders 20 (see Fig. 4) in an orientating magnetic field, provided (as shown) by an electric current flowing in a wire 33 threaded through the glass cylinders, or by permanent magnets, during the or each deposition. Air is preferably excluded during the second plating by covering the second solution 25 with a silicone oil layer 28.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16289761A | 1961-12-28 | 1961-12-28 | |
| US162894A US3255033A (en) | 1961-12-28 | 1961-12-28 | Electroless plating of a substrate with nickel-iron alloys and the coated substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1023953A true GB1023953A (en) | 1966-03-30 |
Family
ID=26859144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4770862A Expired GB1023953A (en) | 1961-12-28 | 1962-12-18 | Improvements in and relating to methods of electrolessly plating nickle-iron alloys |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE626491A (en) |
| DE (1) | DE1446188A1 (en) |
| GB (1) | GB1023953A (en) |
-
0
- BE BE626491D patent/BE626491A/xx unknown
-
1962
- 1962-12-18 GB GB4770862A patent/GB1023953A/en not_active Expired
- 1962-12-27 DE DE19621446188 patent/DE1446188A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1446188A1 (en) | 1969-09-25 |
| BE626491A (en) |
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