ES323161A1 - A method of forming a chromide covering on a metal composition. (Machine-translation by Google Translate, not legally binding) - Google Patents
A method of forming a chromide covering on a metal composition. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES323161A1 ES323161A1 ES0323161A ES323161A ES323161A1 ES 323161 A1 ES323161 A1 ES 323161A1 ES 0323161 A ES0323161 A ES 0323161A ES 323161 A ES323161 A ES 323161A ES 323161 A1 ES323161 A1 ES 323161A1
- Authority
- ES
- Spain
- Prior art keywords
- metal
- fluoride
- composition
- forming
- chromium
- 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
Abstract
A method of forming a chromium coating on a metal composition having a metal melting point of at least 700º C with at least 50 mole percent of said metal composition being at least one of the metals selected from the group of metals whose atomic numbers are 26-29, 42, 44-47 and 74-79, said method being characterized by 1 forming an electric battery containing said metallic composition as a cathode connected through an external electric circuit to a chromium anode and a salt electrolyte. melts composed essentially of at least one metal fluoride and from 0.1 to 50 mole percent of at least one metal chromium fluoride, the metal of the metal fluoride and the metal chromate fluoride being at least one metal selected from the group consisting of alkali metals and alkaline earth metals, said electrolyte being maintained at a temperature of at least 700º C, but lower than the flow temperature of said composition In the absence of substantial oxygen, 2 control the current flowing in said electric battery so that the current density of the cathode does not exceed substantially ten amps per square decimeter during the formation of the chromium coating, and 3 interrupt the passage of electrical current after the desired thickness of the chromate coating has been formed on the metal object. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US451053A US3232853A (en) | 1962-03-05 | 1965-04-26 | Corrosion resistant chromide coating |
Publications (1)
Publication Number | Publication Date |
---|---|
ES323161A1 true ES323161A1 (en) | 1967-01-16 |
Family
ID=59091794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0323161A Expired ES323161A1 (en) | 1965-04-26 | 1966-02-17 | A method of forming a chromide covering on a metal composition. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES323161A1 (en) |
-
1966
- 1966-02-17 ES ES0323161A patent/ES323161A1/en not_active Expired
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