GB1118299A - Electrolytic formation of a corrosion resistant chromide coating - Google Patents
Electrolytic formation of a corrosion resistant chromide coatingInfo
- Publication number
- GB1118299A GB1118299A GB47427/65A GB4742765A GB1118299A GB 1118299 A GB1118299 A GB 1118299A GB 47427/65 A GB47427/65 A GB 47427/65A GB 4742765 A GB4742765 A GB 4742765A GB 1118299 A GB1118299 A GB 1118299A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- cathode
- electrolyte
- composition
- alloy
- 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
- 239000011248 coating agent Substances 0.000 title abstract 3
- 238000000576 coating method Methods 0.000 title abstract 3
- 241000501667 Etroplus Species 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 title 1
- 230000007797 corrosion Effects 0.000 title 1
- 238000005260 corrosion Methods 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 abstract 7
- 239000002184 metal Substances 0.000 abstract 7
- 239000000203 mixture Substances 0.000 abstract 5
- 239000011651 chromium Substances 0.000 abstract 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 3
- 239000003792 electrolyte Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 229910021562 Chromium(II) fluoride Inorganic materials 0.000 abstract 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 229910052790 beryllium Inorganic materials 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 229910000975 Carbon steel Inorganic materials 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 229910001515 alkali metal fluoride Inorganic materials 0.000 abstract 1
- -1 alkaline earth metal chromous fluoride Chemical class 0.000 abstract 1
- 229910001618 alkaline earth metal fluoride Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 229960000359 chromic chloride Drugs 0.000 abstract 1
- LJAOOBNHPFKCDR-UHFFFAOYSA-K chromium(3+) trichloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Cl-].[Cr+3] LJAOOBNHPFKCDR-UHFFFAOYSA-K 0.000 abstract 1
- 235000007831 chromium(III) chloride Nutrition 0.000 abstract 1
- 239000011636 chromium(III) chloride Substances 0.000 abstract 1
- RNFYGEKNFJULJY-UHFFFAOYSA-L chromium(ii) fluoride Chemical compound [F-].[F-].[Cr+2] RNFYGEKNFJULJY-UHFFFAOYSA-L 0.000 abstract 1
- 238000005254 chromizing Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 150000004673 fluoride salts Chemical class 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 229910052741 iridium Inorganic materials 0.000 abstract 1
- 229910052744 lithium Inorganic materials 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052762 osmium Inorganic materials 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 229910052702 rhenium Inorganic materials 0.000 abstract 1
- 229910052703 rhodium Inorganic materials 0.000 abstract 1
- 229910052701 rubidium Inorganic materials 0.000 abstract 1
- 229910052707 ruthenium Inorganic materials 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 229910052712 strontium Inorganic materials 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 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
- C25D3/66—Electroplating: Baths therefor from melts
-
- 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
- C23C18/54—Contact plating, i.e. electroless electrochemical plating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
- Secondary Cells (AREA)
- Physical Vapour Deposition (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
A support consisting of a metal composition, over 50 mol % of which is at least one of the metals Cu, Ag, Au, Mo, W, Re, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt, is provided with a chromide coating, i.e. a layer of an interdiffused alloy of the support metal and deposited Cr, by deposition from a fused salt electrolyte of at least one alkaline earth metal fluoride with or without one or more alkali metal fluorides and 0.1 to 50 mol % of at least one alkali or alkaline earth metal chromous fluoride at a temperature of at least 700 DEG C. but below the M.P. of the metal composition, in the absence of oxygen, e.g. in a vacuum or an inert gas atmosphere e.g. of 90% N2-10% H2, wherein the metal composition as cathode is joined through an external electrical circuit to a chromium anode, preferably held as pieces in a graphite or chrome iron porous basket, and the current flowing in the cell is controlled so that the current density of the cathode does not exceed 10 amp/sq.dm. An external e.m.f. e.g. of up to 0.3 volt may be impressed on the circuit, or the bath may be operated as a self-generating battery. The desired metal chromous fluoride may be formed in situ by reduction from added chromic salt by electrolyzing the electrolyte using a scrap cathode and a chromium anode. The electrolyte may be initially composed of 7Kg NaF, 6.5Kg CaF2 and 100g chromic chloride; fluorides of Li, K, Rb, Cs, Be, Mg, Sr and Ba may also be used. The use of Be F2 or Mg F2 in the salt baths in the chromizing of the specified metal composition produces a combined Cr-Be or Cr-Mg coating. Examples of the cathode are strips or coupons of carbon or alloy steel, cast iron, Mo or an alloy of composition: 65 Ni - 10 Cr - 12 Co - 5 Mo - 4 Ti - 4 Al.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17719662A | 1962-03-05 | 1962-03-05 | |
| US451053A US3232853A (en) | 1962-03-05 | 1965-04-26 | Corrosion resistant chromide coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1118299A true GB1118299A (en) | 1968-06-26 |
Family
ID=26873027
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8376/63A Expired GB1029474A (en) | 1962-03-05 | 1963-03-01 | Improvements in chromizing metal articles |
| GB47427/65A Expired GB1118299A (en) | 1962-03-05 | 1965-11-09 | Electrolytic formation of a corrosion resistant chromide coating |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8376/63A Expired GB1029474A (en) | 1962-03-05 | 1963-03-01 | Improvements in chromizing metal articles |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3232853A (en) |
| BE (1) | BE673733A (en) |
| CH (1) | CH469813A (en) |
| DE (2) | DE1256993B (en) |
| FR (2) | FR1426879A (en) |
| GB (2) | GB1029474A (en) |
| NL (1) | NL6516143A (en) |
| SE (1) | SE331403B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3489539A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Manganiding |
| US3489537A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Aluminiding |
| US3489540A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Process for nickeliding,cobaltiding and ironiding base metal compositions |
| US3489536A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Process for scandiding metals |
| US3489538A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Process for yttriding and rare earthiding |
| US3489659A (en) * | 1967-07-03 | 1970-01-13 | Gen Electric | Process for lithiding |
| US3522021A (en) * | 1968-07-01 | 1970-07-28 | Gen Electric | Process for metalliding aluminum surfaces |
| FR2069985B1 (en) * | 1969-12-19 | 1973-12-21 | Anvar | |
| US3930060A (en) * | 1972-05-04 | 1975-12-30 | Toyoda Chuo Kenkyusho Kk | Method for forming a carbide layer of a V-a group element of the periodic table on the surface of an iron, ferrous alloy or cemented carbide article |
| SE372043B (en) * | 1972-07-07 | 1974-12-09 | Nordstjernan Rederi Ab | |
| US3912827A (en) * | 1973-11-13 | 1975-10-14 | Toyota Chuo Kenkyusko Kk | Method for forming a chromium carbide layer on the surface of an iron, ferrous alloy or cemented carbide article |
| US4432839A (en) * | 1981-06-18 | 1984-02-21 | Diamond Shamrock Corporation | Method for making metallided foils |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1535339A (en) * | 1924-05-10 | 1925-04-28 | Peacock Samuel | Process for electrolytically depositing elemental chromium upon metals |
| US1845978A (en) * | 1927-03-18 | 1932-02-16 | Metal & Thermit Corp | Process for the electrolytic production of alpha particularly strong chromium coating |
| US1927773A (en) * | 1931-06-02 | 1933-09-19 | Purdue Research Foundation | Electroplating chromium, etc., on iron, etc. |
| GB659927A (en) * | 1948-04-05 | 1951-10-31 | American Electro Metal Corp | Improvements relating to the coating electrolytically of metal articles |
| US2786809A (en) * | 1953-09-30 | 1957-03-26 | Horizons Titanium Corp | Electrolytic cladding |
| US2828251A (en) * | 1953-09-30 | 1958-03-25 | Horizons Titanium Corp | Electrolytic cladding process |
| US2957782A (en) * | 1956-07-13 | 1960-10-25 | Boller Dev Corp | Process for coating ferrous metals |
| US2971899A (en) * | 1957-09-10 | 1961-02-14 | Gen Motors Corp | Method of electroplating aluminum |
-
1963
- 1963-03-01 GB GB8376/63A patent/GB1029474A/en not_active Expired
- 1963-03-04 DE DEG37195A patent/DE1256993B/en active Pending
- 1963-03-05 FR FR926814A patent/FR1426879A/en not_active Expired
-
1965
- 1965-04-26 US US451053A patent/US3232853A/en not_active Expired - Lifetime
- 1965-11-09 GB GB47427/65A patent/GB1118299A/en not_active Expired
- 1965-11-30 CH CH1650365A patent/CH469813A/en unknown
- 1965-12-09 DE DEG45410A patent/DE1300411B/en active Pending
- 1965-12-10 SE SE16054/65A patent/SE331403B/xx unknown
- 1965-12-10 NL NL6516143A patent/NL6516143A/xx unknown
- 1965-12-13 FR FR42007A patent/FR1461813A/en not_active Expired
- 1965-12-14 BE BE673733D patent/BE673733A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE331403B (en) | 1970-12-21 |
| DE1300411B (en) | 1969-07-31 |
| DE1256993B (en) | 1967-12-21 |
| US3232853A (en) | 1966-02-01 |
| GB1029474A (en) | 1966-05-11 |
| FR1461813A (en) | 1966-12-09 |
| NL6516143A (en) | 1966-10-27 |
| BE673733A (en) | 1966-04-01 |
| FR1426879A (en) | 1966-02-04 |
| CH469813A (en) | 1969-03-15 |
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