DE671314C - Process for the production of fluorine-containing layers on light metals and their alloys - Google Patents
Process for the production of fluorine-containing layers on light metals and their alloysInfo
- Publication number
- DE671314C DE671314C DEI52896D DEI0052896D DE671314C DE 671314 C DE671314 C DE 671314C DE I52896 D DEI52896 D DE I52896D DE I0052896 D DEI0052896 D DE I0052896D DE 671314 C DE671314 C DE 671314C
- Authority
- DE
- Germany
- Prior art keywords
- alloys
- fluorine
- production
- containing layers
- light metals
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Verfahren zur Erzeugung fluorhaltiger Schichten auf Leichtmetallen und deren Legierungen Es ist bekannt, fluorhaltige Schichten auf Leichtmetallen und deren Legierungen durch elektrolytische Behandlung im Schmelzfluß zu erzeugen.Process for the production of fluorine-containing layers on light metals and their alloys It is known to apply fluorine-containing layers on light metals and to produce their alloys by electrolytic treatment in the melt flow.
Es wurde nun gefunden, daß sich für genannten Zweck hervorragend die Ammonpolyfluoride mit mehr als i Mol H F auf i Mol Ammonfluorid oder Mischungen derselben, gegebenenfalls in Mischung mit neutralen oder Bifluoriden der Alkalien oder des Ammoniums, als Elektrolyte eignen. Diese Verbindungen zeichnen sich dadurch aus, daß sie einen verhältnismäßig niedrigen Schmelzpunkt haben, so daß das Verfahren hei niedrigen Temperaturen mit geringem Energieverbrauch durchgeführt werden kann und auch auf solche Metalle bzw. Metallegierungen anwendbar ist, die einen verhältnismäßig niedrigen Schmelzpunkt haben. Als geeignete Polyfluoride seien beispielsweise genannt Ammoniumpolyfluoride der Zusammensetzung i\? H4 F - a H F bis N H4 F - 5 H F mit Schmelzpunkten zwischen etwa 2o und 30°. Gegebenenfalls können diese Polyfluoride auch in Mischung mit neutralen Fluoriden bzw. Bifluoriden verwendet werden. So ist z. B. eine Mischung von 8o °/o N H., F - 2 H F und 2o N H4 F - H F sehr geeignet. Diese Mischung besitzt einen Schmelzpunkt von 2o° C.It has now been found that the excellent for the stated purpose Ammon polyfluorides with more than 1 mole of H F per 1 mole of ammonium fluoride or mixtures the same, optionally in a mixture with neutral or bifluorides of the alkalis or ammonium, are suitable as electrolytes. These connections are characterized by it from that they have a relatively low melting point, so the process can be carried out at low temperatures with low energy consumption and is also applicable to those metals or metal alloys that have a relative have a low melting point. Examples of suitable polyfluorides are mentioned Ammonium polyfluorides of the composition i \? H4 F - a H F to N H4 F - 5 H F with Melting points between about 20 and 30 °. Optionally, these can be polyfluorides can also be used in a mixture with neutral fluorides or bifluorides. So is z. B. a mixture of 80% N H., F - 2 H F and 20 N H4 F - H F is very suitable. This mixture has a melting point of 20 ° C.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI52896D DE671314C (en) | 1935-07-27 | 1935-07-28 | Process for the production of fluorine-containing layers on light metals and their alloys |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE463024X | 1935-07-27 | ||
DEI52896D DE671314C (en) | 1935-07-27 | 1935-07-28 | Process for the production of fluorine-containing layers on light metals and their alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
DE671314C true DE671314C (en) | 1939-02-04 |
Family
ID=25943993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI52896D Expired DE671314C (en) | 1935-07-27 | 1935-07-28 | Process for the production of fluorine-containing layers on light metals and their alloys |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE671314C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3417004A (en) * | 1966-03-24 | 1968-12-17 | Bell Telephone Labor Inc | Production of aluminum, magnesium, and nickel fluoride films by anodization |
-
1935
- 1935-07-28 DE DEI52896D patent/DE671314C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3417004A (en) * | 1966-03-24 | 1968-12-17 | Bell Telephone Labor Inc | Production of aluminum, magnesium, and nickel fluoride films by anodization |
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