US1535339A - Process for electrolytically depositing elemental chromium upon metals - Google Patents
Process for electrolytically depositing elemental chromium upon metals Download PDFInfo
- Publication number
- US1535339A US1535339A US712451A US71245124A US1535339A US 1535339 A US1535339 A US 1535339A US 712451 A US712451 A US 712451A US 71245124 A US71245124 A US 71245124A US 1535339 A US1535339 A US 1535339A
- Authority
- US
- United States
- Prior art keywords
- chromium
- bath
- metals
- metal
- cathode
- 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 - Lifetime
Links
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title description 20
- 229910052804 chromium Inorganic materials 0.000 title description 20
- 239000011651 chromium Substances 0.000 title description 20
- 229910052751 metal Inorganic materials 0.000 title description 15
- 239000002184 metal Substances 0.000 title description 15
- 238000000034 method Methods 0.000 title description 11
- 150000002739 metals Chemical class 0.000 title description 5
- 238000000151 deposition Methods 0.000 title description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000004115 Sodium Silicate Substances 0.000 description 6
- 229910021563 chromium fluoride Inorganic materials 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 229910052911 sodium silicate Inorganic materials 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- -1 alkali metal chromium fluoride Chemical class 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052752 metalloid Inorganic materials 0.000 description 4
- 150000002738 metalloids Chemical class 0.000 description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- FTBATIJJKIIOTP-UHFFFAOYSA-K trifluorochromium Chemical compound F[Cr](F)F FTBATIJJKIIOTP-UHFFFAOYSA-K 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 241000692870 Inachis io Species 0.000 description 1
- 241001397173 Kali <angiosperm> Species 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- HEUMNKZPHGRBKR-UHFFFAOYSA-N [Na].[Cr] Chemical compound [Na].[Cr] HEUMNKZPHGRBKR-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- BGQMBPWATBYHMC-UHFFFAOYSA-J potassium;chromium(3+);tetrafluoride Chemical compound [F-].[F-].[F-].[F-].[K+].[Cr+3] BGQMBPWATBYHMC-UHFFFAOYSA-J 0.000 description 1
- QEVHRUUCFGRFIF-MDEJGZGSSA-N reserpine Chemical compound O([C@H]1[C@@H]([C@H]([C@H]2C[C@@H]3C4=C(C5=CC=C(OC)C=C5N4)CCN3C[C@H]2C1)C(=O)OC)OC)C(=O)C1=CC(OC)=C(OC)C(OC)=C1 QEVHRUUCFGRFIF-MDEJGZGSSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 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
Definitions
- This invention relates to a process for electrolytically depositing elemental chromium upon metals, and has for its object to improve the procedures heretofore. proposed.
- the invention consists in the novel steps and combinations of steps constituting the process, all as will be more fully hereinafter disclosed and particularly pointed out in the claims.
- I provide a suitable bath from a fused salt of chromium such for example as a bath of an alkali metal chromium fluoride containing a small proportion of basic sodium silicate.
- a fused salt of chromium such for example as a bath of an alkali metal chromium fluoride containing a small proportion of basic sodium silicate.
- I mean a compound such as Na SiO or any sodium silicate containing sodium oxide exceeding 0 per cent.
- concentration of the chromium in the bath is maintained in any suitable manner, as by the addition of finely divided chromic-oxide,
- the electrodes may be ofany suitable material, the anode being either a soluble chromiurn compound or alloy or it'may be of carbon.
- the purpose in hand involves the deposition of the elemental chromium from the above-mentioned .-fuse d salt either for the purpose of making a rust-resisting coating upon metals'that are prone to corrosion under various conditions of contact with corrothe cathodes upon which the chromium has been deposited, and thereby producing.
- the coating process is followed by the fusion through any suitable means, of said sheets,
- ferro-chromium alloy is made which is substantially free of metalloid impurities.
- Either a potassium chromium fluoride or a sodium chromium. fluoride may be employed for the bath.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Description
, Wheeling, in the county of Ohio and Patented Apr. 28, 1925.
SAMUEL PEACOCK, or WHEEIQII'NG, WEST VIRGINIA.
PROCESS FOR ELEGTROLYTICALLY DElPOSITING ELEMENTAL CHROMEIUM UPON METALS.
No Drawing To all whom itma z concern Be it known that. I, SAMUEL PEACOCK, a citizen of the United States, residin attate of West Virginia, have invented certain new and usefulImp-rovements in Processes for Electrolyt-ically Depositing Elemental Chromium Upon Metals; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to a process for electrolytically depositing elemental chromium upon metals, and has for its object to improve the procedures heretofore. proposed.
With these and other objects in view, the invention consists in the novel steps and combinations of steps constituting the process, all as will be more fully hereinafter disclosed and particularly pointed out in the claims.
In carrying out this invention, I provide a suitable bath from a fused salt of chromium such for example as a bath of an alkali metal chromium fluoride containing a small proportion of basic sodium silicate. By this term, I mean a compound such as Na SiO or any sodium silicate containing sodium oxide exceeding 0 per cent. The concentration of the chromium in the bath is maintained in any suitable manner, as by the addition of finely divided chromic-oxide,
and any suitable mechanical means for thoroughly stirrlng the mixture or incorporating the chromic oxide with the fused-- bath may also be provided 7 The electrodes may be ofany suitable material, the anode being either a soluble chromiurn compound or alloy or it'may be of carbon.
The purpose in hand involves the deposition of the elemental chromium from the above-mentioned .-fuse d salt either for the purpose of making a rust-resisting coating upon metals'that are prone to corrosion under various conditions of contact with corrothe cathodes upon which the chromium has been deposited, and thereby producing. an
alloy of chromium and the melted cathode ,which will be substantially free of metal loids. To illustrate, I deposit chromium upon very pure iron sheets for example, and
the coating process is followed by the fusion through any suitable means, of said sheets,
said coated cathode to a Application filed Kay 10, 1924. Serial No. 712,451.
whereupon a ferro-chromium alloy is made which is substantially free of metalloid impurities. Or, to illustrate the use of this process in the making of a chromium sur- 00 faced object, with veryhigh corrosion re-" Q 'sisting properties, I employ a mild steel Wire materials or salt but it is found to be smooth 4 and'polished, and burnished as well, to the extent desired.
Either a potassium chromium fluoride or a sodium chromium. fluoride may be employed for the bath.
What I claim is:
1. The process of coating a metal with chromium which consists in preparing a fused bath of an alkali metal chromium fluoride; adding to said bath a basic sodium silicate; employing the metal to .be coated as the cathode in said bath, and plating out the chromium present-by 'passing a current from said bath to said cathode.
2. The process of coating a metal with chromium which consists in preparing a fused bath; of an alkali .metal chromium fluoride; adding to said bath a basic sodium silicate; adding to said bath suflicient chro -mic oxide to maintain the concentration of said bath substantially constant; employin the metal to be coated as the cathode in sai bath; and plating out the chromium present by passing a current from said bath to said cathode.
3. The process of coating a metal with chromium which consists in preparing a fused bath of an alkali metal chromium fluoride; adding to said bath a basic sodium silicate; employing the metal to be coated as the cathode in said bath; plating out the chromium present by passinga current from said bath to said cathode; and subjecting wiping and burnishing action. I
4. The procss of coating a metal" with chromium which consists in preparing a fused bath of an alkali metal chromium fluoride; adding to said'bath a basic sodium silicate; employing the metal to be coated 110 as the cathode in said bath; plating out the chromium present by passing a current from said bath to said cathode; and melting said iron free from metalloids as the cathode in coatedcathode to provide an alloy of the latsaid-bath; plating out the chromium to be ter and chromium. alloyed on to said iron; and melting the 10 5. The process of making an alloy of iron chromium coated iron to form the desired I 5 and chromium free from metalloids which alloy.
consists in preparing a fused bath of an al- In testimony whereof I aflix my signature.
kali metal chromium fluoride; employing SAMUEL PEACOCK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US712451A US1535339A (en) | 1924-05-10 | 1924-05-10 | Process for electrolytically depositing elemental chromium upon metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US712451A US1535339A (en) | 1924-05-10 | 1924-05-10 | Process for electrolytically depositing elemental chromium upon metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1535339A true US1535339A (en) | 1925-04-28 |
Family
ID=24862170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US712451A Expired - Lifetime US1535339A (en) | 1924-05-10 | 1924-05-10 | Process for electrolytically depositing elemental chromium upon metals |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1535339A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US2950233A (en) * | 1954-04-29 | 1960-08-23 | Horizons Inc | Production of hard surfaces on base metals |
| US3232853A (en) * | 1962-03-05 | 1966-02-01 | Gen Electric | Corrosion resistant chromide coating |
| US3864221A (en) * | 1972-07-07 | 1975-02-04 | Nordstjernan Rederi Ab | Coating of a steel or iron with a chromium containing surface layer |
-
1924
- 1924-05-10 US US712451A patent/US1535339A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US2950233A (en) * | 1954-04-29 | 1960-08-23 | Horizons Inc | Production of hard surfaces on base metals |
| US3232853A (en) * | 1962-03-05 | 1966-02-01 | Gen Electric | Corrosion resistant chromide coating |
| US3864221A (en) * | 1972-07-07 | 1975-02-04 | Nordstjernan Rederi Ab | Coating of a steel or iron with a chromium containing surface layer |
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