GB989250A - Chemical nickel plating of magnesium and its alloys - Google Patents
Chemical nickel plating of magnesium and its alloysInfo
- Publication number
- GB989250A GB989250A GB42228/62A GB4222862A GB989250A GB 989250 A GB989250 A GB 989250A GB 42228/62 A GB42228/62 A GB 42228/62A GB 4222862 A GB4222862 A GB 4222862A GB 989250 A GB989250 A GB 989250A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ions
- mols
- nickel
- magnesium
- plating 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
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
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
An aqueous chemical nickel plating bath for coating magnesium and its alloys comprises nickel ions, 0.15-1.2 mols/1. hypophosphate ions, the ratio between nickel ions and hypophosphate ions being 0.25 : 1.6, sufficient complexing agent to complex all the nickel, 0.1-0.4 mols/1. of fluoride ions, sufficient hydroxyl ions to produce a pH of 7-9 and a buffering system comprising alkali metal cations and boron oxide anions equivalent to 0.05-0.2 mols/1. of alkali metal tetraborate. The complexing agent preferably comprises 0.08-0..12 mols/1. of an aliphatic aminocarboxylic acid or salt and 0.06-0.1 mols/1. of a hydroxycarboxylic acid or salt. The solution also preferably contains 0.05-0.2 mols/1. ammonium ions and also 30-150 p.p.m. of AsO4 anions. The nickel ions may be derived from the hypophosphate, acetate, sulphate or carbonate of nickel, the hydroxide preferably from NaOH, the ammonium and fluoride ions preferably from ammonium bifluoride and the boron oxide from H3BO3, H2B4O7, Na3BO3 or Na2B4O7. The magnesium or alloy surface is cleaned, pickled first in an aqueous solution containing chromic oxide, nitric acid and hydrofluoric acid, second in an aqueous solution of hydrofluoric acid and finally in an aqueous solution of sodium hydroxide to form a protective film of magnesium fluoride-magnesium hydroxide. The treated surface is then coated in the nickel plating bath and finally heated at 400 DEG F. Optionally the coating may be formed by treating with the plating bath of the invention and then finally coating in an acid nickel plating bath with a pH of 4-6. Specification 821,763 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US159745A US3121644A (en) | 1961-12-15 | 1961-12-15 | Chemical nickel plating of magnesium and its alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB989250A true GB989250A (en) | 1965-04-14 |
Family
ID=22573836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB42228/62A Expired GB989250A (en) | 1961-12-15 | 1962-11-08 | Chemical nickel plating of magnesium and its alloys |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3121644A (en) |
| AT (1) | AT247683B (en) |
| CH (1) | CH419771A (en) |
| DK (1) | DK105308C (en) |
| ES (1) | ES282772A1 (en) |
| FI (1) | FI42656B (en) |
| GB (1) | GB989250A (en) |
| LU (1) | LU42802A1 (en) |
| SE (1) | SE304892B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171393A (en) * | 1977-06-20 | 1979-10-16 | Eastman Kodak Company | Electroless plating method requiring no reducing agent in the plating bath |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2694017A (en) * | 1952-09-16 | 1954-11-09 | Gen American Transporation Cor | Process of chemical nickel plating of aluminum and its alloys and baths therefor |
| US2762723A (en) * | 1953-06-03 | 1956-09-11 | Gen American Transporation Cor | Processes of chemical nickel plating and baths therefor |
| US2766138A (en) * | 1953-09-18 | 1956-10-09 | Gen Am Transport | Processes of chemical nickel plating |
| US2935425A (en) * | 1954-12-29 | 1960-05-03 | Gen Am Transport | Chemical nickel plating processes and baths therefor |
| US2884344A (en) * | 1957-10-07 | 1959-04-28 | Reynolds Metals Co | Nickel plating |
| US2916401A (en) * | 1958-02-10 | 1959-12-08 | Gen Motors Corp | Chemical reduction nickel plating bath |
| US2983634A (en) * | 1958-05-13 | 1961-05-09 | Gen Am Transport | Chemical nickel plating of magnesium and its alloys |
| US2994369A (en) * | 1959-04-02 | 1961-08-01 | Pittsburgh Plate Glass Co | Nickel plating chemical composition |
-
1961
- 1961-12-15 US US159745A patent/US3121644A/en not_active Expired - Lifetime
-
1962
- 1962-11-08 GB GB42228/62A patent/GB989250A/en not_active Expired
- 1962-11-24 ES ES282772A patent/ES282772A1/en not_active Expired
- 1962-11-26 FI FI2122/62A patent/FI42656B/fi active
- 1962-11-29 CH CH1403962A patent/CH419771A/en unknown
- 1962-11-30 DK DK519862AA patent/DK105308C/en active
- 1962-12-03 LU LU42802D patent/LU42802A1/xx unknown
- 1962-12-04 AT AT950462A patent/AT247683B/en active
- 1962-12-04 SE SE13057/62A patent/SE304892B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES282772A1 (en) | 1963-03-16 |
| CH419771A (en) | 1966-08-31 |
| US3121644A (en) | 1964-02-18 |
| LU42802A1 (en) | 1963-02-04 |
| SE304892B (en) | 1968-10-07 |
| DK105308C (en) | 1966-09-12 |
| AT247683B (en) | 1966-06-27 |
| FI42656B (en) | 1970-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1181581A (en) | Process for Treating Glass | |
| US2825697A (en) | Method of and solution for the surface treatment of aluminum | |
| GB965836A (en) | Improvements in or relating to aluminium oxide coating sealing methods | |
| US2956900A (en) | Nickel coating composition and method of coating | |
| GB1066192A (en) | Improvements in or relating to silicate grout | |
| FI962133A (en) | Ammonia-free coating with copper by disproportionation | |
| GB1027652A (en) | Deposition of gold films | |
| GB1329069A (en) | Process for adhesion of metal films to a polyimide substrate | |
| GB1015563A (en) | Process for increasing the corrosion resistance of aluminium and aluminium-alloy surfaces | |
| GB712874A (en) | Improvements in or relating to processes for providing aluminium or aluminium alloys with a coating of lead | |
| GB989250A (en) | Chemical nickel plating of magnesium and its alloys | |
| GB1097262A (en) | Treatment of aluminum | |
| GB983451A (en) | Improvements in chemical cleaning method and material | |
| GB1084426A (en) | Improvements in the coating of metals | |
| GB1247980A (en) | Copper alloy cleaning process | |
| GB1093119A (en) | Improvements relating to the treatment of metal surfaces | |
| GB1049131A (en) | Chromating of aluminium surfaces | |
| GB776508A (en) | Improvements in or relating to method of coating surfaces with an adherent film of metallic silver | |
| US2956901A (en) | Copper coating composition and method of coating | |
| GB1087054A (en) | Tinning of alumnium | |
| GB842826A (en) | Improvements in or relating to chemical plating | |
| GB955775A (en) | Process for the electroles coating of metals or metal articles | |
| ES316313A1 (en) | Procedure for the treatment of metal surfaces. (Machine-translation by Google Translate, not legally binding) | |
| GB693776A (en) | Method of producing high gloss surfaces on aluminium and aluminium-base alloys | |
| GB830597A (en) | Nickel plating by chemical means |