DE1085004B - Use of surface oxidized aluminum alloys with more than 1% alloy components - Google Patents

Use of surface oxidized aluminum alloys with more than 1% alloy components

Info

Publication number
DE1085004B
DE1085004B DED24652A DED0024652A DE1085004B DE 1085004 B DE1085004 B DE 1085004B DE D24652 A DED24652 A DE D24652A DE D0024652 A DED0024652 A DE D0024652A DE 1085004 B DE1085004 B DE 1085004B
Authority
DE
Germany
Prior art keywords
aluminum alloys
alloy components
oxidized aluminum
surface oxidized
aluminum
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.)
Pending
Application number
DED24652A
Other languages
German (de)
Inventor
Dr Joachim Rasch
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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 Degussa GmbH filed Critical Degussa GmbH
Priority to DED24652A priority Critical patent/DE1085004B/en
Priority to GB1030/58A priority patent/GB852900A/en
Publication of DE1085004B publication Critical patent/DE1085004B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • 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
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/24—Chemical after-treatment
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
    • D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
    • D06L4/24—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide

Description

Verwendung von oberflächlich oxydierten Aluminiumlegierungen mit mehr als 1% Legierungsbestandteilen Es ist schon vorgeschlagen, chemisch oder vorzugsweise elektrolytisch oberflächlich oxydiertes Aluminium als Material für Apparaturen und Apparateteile, die mit sauren, nitrat- und phosphatfreien Chloritlösungen in Berührung kommen, zu verwenden. An Stelle des reinen Aluminiums kann hierbei auch niedriglegiertes Aluminium mit bis zu 10/0 Legierungsbestandteilen verwendet werden. Derartig behandeltes Aluminium ist besonders geeignet für Apparaturen oder Apparateteile, die mit sauren Chloritlösungen mit einem Gehalt von Chlorationen in Berührung kommen.Use of surface oxidized aluminum alloys with more as 1% alloy constituents It has already been suggested chemically or preferably electrolytically superficially oxidized aluminum as a material for apparatus and Parts of the apparatus that come into contact with acidic, nitrate- and phosphate-free chlorite solutions come to use. Instead of pure aluminum, low-alloyed aluminum can also be used here Aluminum with up to 10/0 alloy components can be used. Treated in this way Aluminum is particularly suitable for apparatus or apparatus parts that are acidic Chlorite solutions with a content of chlorate ions come into contact.

Es wurde nun festgestellt, daß man nicht nur reines Aluminium oder mit bis zu 10/0 legiertes Aluminium durch chemisches oder elektrolytisches Oxydieren besonders beständig gegen den Angriff saurer Chloritlösungen machen kann, die keine Nitrat- oder Phosphationen enthalten, sondern daß für den genannten Zweck auch andere chemisch oder vorzugsweise elektrolytisch oberflächlich oxydierte Aluminiumlegierungen mit mehr als 10/0 Legierungsbestandteilen geeignet sind. Insbesondere kommen hierbei Legierungen des Aluminiums mit geringen Zuschlägen von Kupfer, Magnesium, Mangan, Silicium, Eisen, Zink, Chrom in Betracht. Die nachstehenden Versuchsergebnisse zeigen deutlich die gute Korrosionsfestigkeit der oberflächlich oxydierten Aluminiumlegierungen Zusammensetzung 0,10/0 Cu, 0,6 bis 1,4% Mg, 0,6 bis 10/0 Mn, 0,6 bis 1,2 0/0 Si, 0,5 0/0 Fe + Ti, 0,3 0j0 Zn, 0 bis 0,3 0/0 Cr, Rest Al.It has now been found that you can not only use pure aluminum or Aluminum alloyed with up to 10/0 by chemical or electrolytic oxidation particularly resistant to attack by acidic chlorite solutions that do not Contain nitrate or phosphate ions, but that for the stated purpose also others chemically or preferably electrolytically superficially oxidized aluminum alloys with more than 10/0 alloy components are suitable. In particular, come here Alloys of aluminum with small additions of copper, magnesium, manganese, Silicon, iron, zinc, chromium into consideration. The following test results show clearly the good corrosion resistance of the surface oxidized aluminum alloys Composition 0.10 / 0 Cu, 0.6 to 1.4% Mg, 0.6 to 10/0 Mn, 0.6 to 1.2 0/0 Si, 0.5 0/0 Fe + Ti, 0.3 0/0 Zn, 0 to 0.3 0/0 Cr, remainder Al.

Diese Legierung wurde in üblicher Weise in Schwefelsäure anodisch oxydiert, in l0/0iger Wasserglaslösung nachverdichtet und dann im Vergleich mit einer nichtoxydierten Probe in einer Prüflösung behandelt, die 10 g/1 NaC102 enthielt und mit Ameisensäure auf einen pH-Wert von 3,8 eingestellt war. Die Bleche wurden zu etwa drei Viertel 1 Tag lang in die 95°C warme Lösung eingetaucht. Nach der Behandlung hatte das unbehandelte Blech 63,5 g/ml verloren, während der Gewichtsverlust des oxydierten Bleches nur 5,5 g/ml betrug.This alloy was anodized in the usual manner in sulfuric acid oxidized, redensified in 10/0 water glass solution and then compared with treated a non-oxidized sample in a test solution containing 10 g / l NaC102 and adjusted to pH 3.8 with formic acid. The sheets were immersed in the 95 ° C solution for about three quarters for a day. After treatment the untreated panel had lost 63.5 g / ml, while the weight loss of the oxidized sheet was only 5.5 g / ml.

Zusammensetzung 0,05 0/0 Cu, 2,0 bis 4,0 0/0 Mg, 0 bis 0,4 0/0 Mn, 0,5 0/0 Si, 0,50/0 Fe -f- Ti, 0,30/0 Zn, 0 bis 0,30/0 Cr, Rest Al.Composition 0.05 0/0 Cu, 2.0 to 4.0 0/0 Mg, 0 to 0.4 0/0 Mn, 0.5 0/0 Si, 0.50 / 0 Fe-f- Ti, 0.30 / 0 Zn, 0 to 0.30 / 0 Cr, remainder Al.

Bei der wie oben durchgeführten Prüfung war das unbehandelte Blech stark korrodiert und hatte einen Verlust von 32 g/m2. Das oxydierte Blech hatte nur 1,1 g/m2 an Gewicht verloren. Äußerlich war ihm nichts anzusehen. Zusammensetzung 0,05 0/0 Cu, 5,5 bis 7,5 0/0 Mg, 0 bis 0,8 0/0 Mn, 0,5 0/0 Si, 0,5 0/0 Fe + Ti, 0,3 0/0 Zn, 0 bis 0,3 0/0 Cr, Rest Al.When tested as above, the panel was untreated heavily corroded and had a loss of 32 g / m2. The oxidized sheet had lost only 1.1 g / m2 in weight. Outwardly there was nothing to be seen. composition 0.05 0/0 Cu, 5.5 to 7.5 0/0 Mg, 0 to 0.8 0/0 Mn, 0.5 0/0 Si, 0.5 0/0 Fe + Ti, 0.3 0/0 Zn, 0 to 0.3 0/0 Cr, remainder Al.

Bei einer wie oben durchgeführten Prüfung zeigte das nichtoxydierte Blech starken Lochfraß und hatte 95,5 g/m2 an Gewicht verloren. Das oxydierte Blech zeigte keine sichtbaren Angriffe; der Gewichtsverlust betrug nur 1,2 g/m2.In a test carried out as above, this showed unoxidized The sheet metal was badly pitted and had lost 95.5 g / m2 in weight. The oxidized sheet showed no visible attacks; the weight loss was only 1.2 g / m2.

Claims (3)

PATENTANSPRÜCHE: 1. Verwendung von elektrolytisch oder chemisch oberflächlich oxydierten Aluminiumlegierungen mit mehr als 10/0 Legierungsbestandteilen als Material für Apparaturen und Apparateteile, die mit sauren, nitrat- und phosphatfreien Chloritlösungen oder mit Chlordioxyd in Berührung kommen. PATENT CLAIMS: 1. Use of electrolytically or chemically superficial oxidized aluminum alloys with more than 10/0 alloy components as material for apparatus and apparatus parts that contain acid, nitrate and phosphate-free chlorite solutions or come into contact with chlorine dioxide. 2. Verwendung von mit Ameisensäure oder Essigsäure angesäuerten Chloritlösungen für das Verfahren nach Anspruch 1. 2. Use of with formic acid or Acetic acid acidified chlorite solutions for the process according to claim 1. 3. Verwendung von Chlorationen enthaltenden Chloritlösungen für das Verfahren nach Anspruch 1 oder 2.3. Use of chlorite solutions containing chlorate ions for the process according to claim 1 or 2.
DED24652A 1957-01-10 1957-01-10 Use of surface oxidized aluminum alloys with more than 1% alloy components Pending DE1085004B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DED24652A DE1085004B (en) 1957-01-10 1957-01-10 Use of surface oxidized aluminum alloys with more than 1% alloy components
GB1030/58A GB852900A (en) 1957-01-10 1958-01-10 Apparatus for use in contact with acid chlorite solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED24652A DE1085004B (en) 1957-01-10 1957-01-10 Use of surface oxidized aluminum alloys with more than 1% alloy components

Publications (1)

Publication Number Publication Date
DE1085004B true DE1085004B (en) 1960-07-07

Family

ID=7038257

Family Applications (1)

Application Number Title Priority Date Filing Date
DED24652A Pending DE1085004B (en) 1957-01-10 1957-01-10 Use of surface oxidized aluminum alloys with more than 1% alloy components

Country Status (2)

Country Link
DE (1) DE1085004B (en)
GB (1) GB852900A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1388591A1 (en) * 2002-08-01 2004-02-11 Hydro Aluminium Deutschland GmbH Aluminium alloy for strip production

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929724C2 (en) * 1978-08-04 1985-12-05 Coors Container Co., Golden, Col. Method of making an aluminum alloy ribbon for cans and lids
JPS57143472A (en) * 1981-03-02 1982-09-04 Sumitomo Light Metal Ind Ltd Manufacture of aluminum alloy sheet for forming
JPS60194040A (en) * 1984-02-18 1985-10-02 Kobe Steel Ltd Aluminum alloy substrate for disc having superior suitability to plating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1388591A1 (en) * 2002-08-01 2004-02-11 Hydro Aluminium Deutschland GmbH Aluminium alloy for strip production

Also Published As

Publication number Publication date
GB852900A (en) 1960-11-02

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