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 alloys

Info

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
Application number
DEI52896D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI52896D priority Critical patent/DE671314C/en
Application granted granted Critical
Publication of DE671314C publication Critical patent/DE671314C/en
Expired legal-status Critical Current

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)

PATENTANSPRUCfi: Verfahren zur Erzeugung fluorhaltiger Schichten auf Leichtmetallen und deren Legierungen durch elektrolytische Behandlung im Schmelzfluß, dadurch gekennzeichnet, daß als Elektrolyt Ammonpolyfluoride mit mehr als i Mol H F auf i Mol Ammonfluorid oder Mischungen derselben, gegebenenfalls in Mischung mit neutralen oder Bifluoriden verwendet werden.PATENT CLAIM: Process for the production of fluorine-containing layers Light metals and their alloys by electrolytic treatment in the melt flow, characterized in that ammon polyfluoride with more than i mol H F per 1 mol of ammonium fluoride or mixtures thereof, if appropriate as a mixture can be used with neutral or bifluorides.
DEI52896D 1935-07-27 1935-07-28 Process for the production of fluorine-containing layers on light metals and their alloys Expired DE671314C (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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