DE517162C - Process for improving the corrosion resistance of magnesium alloys - Google Patents

Process for improving the corrosion resistance of magnesium alloys

Info

Publication number
DE517162C
DE517162C DEI35077D DEI0035077D DE517162C DE 517162 C DE517162 C DE 517162C DE I35077 D DEI35077 D DE I35077D DE I0035077 D DEI0035077 D DE I0035077D DE 517162 C DE517162 C DE 517162C
Authority
DE
Germany
Prior art keywords
corrosion resistance
magnesium alloys
improving
water
alloys
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
DEI35077D
Other languages
German (de)
Inventor
Adolf Beck
Hugo Dibelka
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 DEI35077D priority Critical patent/DE517162C/en
Application granted granted Critical
Publication of DE517162C publication Critical patent/DE517162C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/185—Refractory metal-containing compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Description

Verfahren zur Verbesserung der Korrosionsbeständigkeit von lWagnesiumlegierungen Gegenstand des Patentes 493 827 ist ein Verfahren zur Erhöhung der Korrosionsfestigkeit von Magnesiumlegierungen, welches darin besteht, daß die Formstücke aus solchen Legierungen in einer wäßrigen Lösung von Bichromat gekocht werden, gegebenenfalls nach einer vorausgehenden Behandlung mit verdünnter Salpetersäure.Process for improving the corrosion resistance of magnesium alloys The subject of patent 493 827 is a method for increasing the corrosion resistance of magnesium alloys, which consists in that the fittings from such Alloys are boiled in an aqueous solution of bichromate, optionally after previous treatment with dilute nitric acid.

Es hat sich im Verlauf weiterer Untersuchungen gezeigt, daß in manchen Fällen, in denen die Oberfläche der Legierung bei ihrer Verwendung nur vorübergehend einer Behandlung mit Wasser ausgesetzt wird, auch wenn dieses nicht die Reinheit von destilliertem Wasser besitzt, eine besondere Behandlung nach Patent 493 827 nicht erforderlich ist, vielmehr ein ausreichender Schutz gegen Korrosion unter Wasserstoffentwicklung bereits dadurch erzielt wird, daß dem im Betrieb verwendeten Wasser geringe Mengen (beispielsweise iolo) Bichromät zugesetzt werden. Ein Sonderfall dieser Art ist beispielsweise die Behandlung der Bleche von Magnesiumlegierungen im Feuchtwerk von Offsetdruckmaschinen.It has been shown in the course of further investigations that in some Cases where the surface of the alloy in its use is only temporary is exposed to treatment with water, even if it is not pure of distilled water, a special treatment according to patent 493 827 is not required, rather adequate protection against corrosion under Hydrogen evolution is already achieved by the fact that the one used in operation Small amounts of bichromate (e.g. iolo) can be added to water. A special case of this type is, for example, the treatment of magnesium alloy sheets in the dampening system of offset printing machines.

Claims (1)

PATENTANSPRUCH: Weitere Ausbildung des Verfahrens nach Patent 493 827, dadurch gekennzeichnet, daß Oberflächen von Magnesiumlegierungen, die vorübergehend mit Wasser zu benetzen sind, gegen dessen korrodierende Wirkung dadurch geschützt werden, daß man dem Benetzungswasser einen Gehalt an Bichromat gibt.PATENT CLAIM: Further development of the process according to Patent 493 827, characterized in that surfaces of magnesium alloys that are temporarily are to be wetted with water, protected against its corrosive effect be that the wetting water is given a content of bichromate.
DEI35077D 1928-07-26 1928-07-26 Process for improving the corrosion resistance of magnesium alloys Expired DE517162C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI35077D DE517162C (en) 1928-07-26 1928-07-26 Process for improving the corrosion resistance of magnesium alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI35077D DE517162C (en) 1928-07-26 1928-07-26 Process for improving the corrosion resistance of magnesium alloys

Publications (1)

Publication Number Publication Date
DE517162C true DE517162C (en) 1931-01-31

Family

ID=7188883

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI35077D Expired DE517162C (en) 1928-07-26 1928-07-26 Process for improving the corrosion resistance of magnesium alloys

Country Status (1)

Country Link
DE (1) DE517162C (en)

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