GB1029474A - Improvements in chromizing metal articles - Google Patents
Improvements in chromizing metal articlesInfo
- Publication number
- GB1029474A GB1029474A GB8376/63A GB837663A GB1029474A GB 1029474 A GB1029474 A GB 1029474A GB 8376/63 A GB8376/63 A GB 8376/63A GB 837663 A GB837663 A GB 837663A GB 1029474 A GB1029474 A GB 1029474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- cathode
- article
- chromous
- nickel
- 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
- 229910052751 metal Inorganic materials 0.000 title abstract 4
- 239000002184 metal Substances 0.000 title abstract 4
- 238000005254 chromizing Methods 0.000 title 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 3
- 229910052804 chromium Inorganic materials 0.000 abstract 3
- 239000011651 chromium Substances 0.000 abstract 3
- 229910052759 nickel Inorganic materials 0.000 abstract 3
- 238000011282 treatment Methods 0.000 abstract 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract 2
- 239000011733 molybdenum Substances 0.000 abstract 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 2
- -1 platinum group metals Chemical class 0.000 abstract 2
- 229910021562 Chromium(II) fluoride Inorganic materials 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- ZNJHTOBRTSYEGK-UHFFFAOYSA-L [Cr](=O)(=O)(F)F.[K] Chemical compound [Cr](=O)(=O)(F)F.[K] ZNJHTOBRTSYEGK-UHFFFAOYSA-L 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 229910001515 alkali metal fluoride Inorganic materials 0.000 abstract 1
- 239000012300 argon atmosphere Substances 0.000 abstract 1
- 239000012298 atmosphere Substances 0.000 abstract 1
- RNFYGEKNFJULJY-UHFFFAOYSA-L chromium(ii) fluoride Chemical compound [F-].[F-].[Cr+2] RNFYGEKNFJULJY-UHFFFAOYSA-L 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 229910052702 rhenium Inorganic materials 0.000 abstract 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- FTBATIJJKIIOTP-UHFFFAOYSA-K trifluorochromium Chemical compound F[Cr](F)F FTBATIJJKIIOTP-UHFFFAOYSA-K 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 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)
- Electrolytic Production Of Metals (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Secondary Cells (AREA)
- Physical Vapour Deposition (AREA)
Abstract
An article having a melting point of at least 700 DEG C. and containing at least 50 mol per cent of at least one of the metals copper, silver, gold, molybdenum, tungsten, rhenium, iron, cobalt, nickel or the six platinum group metals is chromized by electrolysis as cathode at a cathode current density not exceeding 1 amp./sq.dm. with a chromium anode of a fused salt bath consisting of one or more alkali metal fluorides and 0.5 to 50 mol per cent total of one or more alkali metal chromous fluorides at a temperature of at least 700 DEG C. but below the melting point of the article and in an oxygen-free atmosphere e.g. vacuum or an inert gas. Typically the bath is prepared under vacuum by completing a circuit between a metal cathode and a chromium in a melt consisting of 1600 gms of a ternary entectic formed on a mol per cent ratio basis of 45:45:10 of KF:LiF:NaF, to which is added 150 gms of potassium chromic fluoride. The self-exciting electrolytic reduction of the chromic fluoride to the chromous state is assisted by applying a small voltage to provide a potential across the bath of the order of 0.03 to 0.05 volt, the bath being held at a temperature in the range of 670 to 700 DEG C. and a current of around 0.5 A being passed for 1/2 hour. The bath containing the chromous fluoride is then electrolyzed under an argon atmosphere with a steel strip article cathode and a chromium anode at 900 DEG C. with a small but increasing applied voltage after a short self-exciting treatment period to maintain current of 50 mA, providing a cathode current density of about 0.5 A/sq.dm, to give a total treatment period of about 5 hours, resulting in a chromized layer of 0.8 mil on both sides of the article. Similar treatments with differing resulting thicknesses of chromized layer are described for nickel, platinum, and molybdenum strip, and reference is made to treating iron electroplated with nickel.
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 |
|---|---|
| GB1029474A true GB1029474A (en) | 1966-05-11 |
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 After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB47427/65A Expired GB1118299A (en) | 1962-03-05 | 1965-11-09 | Electrolytic formation of a corrosion resistant chromide coating |
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 |
|---|---|---|---|---|
| US3489538A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Process for yttriding and rare earthiding |
| US3489540A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Process for nickeliding,cobaltiding and ironiding base metal compositions |
| US3489539A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Manganiding |
| US3489537A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Aluminiding |
| US3489536A (en) * | 1966-11-10 | 1970-01-13 | Gen Electric | Process for scandiding metals |
| US3489659A (en) * | 1967-07-03 | 1970-01-13 | Gen Electric | Process for lithiding |
| US3530371A (en) * | 1968-07-01 | 1970-09-22 | Varian Associates | Internal field-frequency control for impulse gyromagnetic resonance spectrometers |
| 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 |
| US2828251A (en) * | 1953-09-30 | 1958-03-25 | Horizons Titanium Corp | Electrolytic cladding process |
| US2786809A (en) * | 1953-09-30 | 1957-03-26 | Horizons Titanium Corp | Electrolytic cladding |
| 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 NL NL6516143A patent/NL6516143A/xx unknown
- 1965-12-10 SE SE16054/65A patent/SE331403B/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 |
|---|---|
| FR1426879A (en) | 1966-02-04 |
| DE1300411B (en) | 1969-07-31 |
| SE331403B (en) | 1970-12-21 |
| FR1461813A (en) | 1966-12-09 |
| DE1256993B (en) | 1967-12-21 |
| US3232853A (en) | 1966-02-01 |
| NL6516143A (en) | 1966-10-27 |
| CH469813A (en) | 1969-03-15 |
| BE673733A (en) | 1966-04-01 |
| GB1118299A (en) | 1968-06-26 |
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