NO159025B - PROCEDURE FOR CURRENTLY CREATION OF CORROSION PROTECTIVE ALUMINUM BUILDING PARTS. - Google Patents
PROCEDURE FOR CURRENTLY CREATION OF CORROSION PROTECTIVE ALUMINUM BUILDING PARTS. Download PDFInfo
- Publication number
- NO159025B NO159025B NO832077A NO832077A NO159025B NO 159025 B NO159025 B NO 159025B NO 832077 A NO832077 A NO 832077A NO 832077 A NO832077 A NO 832077A NO 159025 B NO159025 B NO 159025B
- Authority
- NO
- Norway
- Prior art keywords
- zno
- building parts
- corrosion
- naoh
- creation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 230000007797 corrosion Effects 0.000 title abstract description 10
- 238000005260 corrosion Methods 0.000 title abstract description 10
- 230000001681 protective effect Effects 0.000 title description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims 2
- 239000004411 aluminium Substances 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 13
- 239000011701 zinc Substances 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 238000000576 coating method Methods 0.000 description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 238000004532 chromating Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- LKCUKVWRIAZXDU-UHFFFAOYSA-L zinc;hydron;phosphate Chemical compound [Zn+2].OP([O-])([O-])=O LKCUKVWRIAZXDU-UHFFFAOYSA-L 0.000 description 1
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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Coating With Molten Metal (AREA)
- Building Environments (AREA)
- Coating By Spraying Or Casting (AREA)
- Electroplating Methods And Accessories (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
Oppfinnelsen vedrører en fremgangsmåte til strøm- The invention relates to a method for current
løs frembringelse av korrosjonsbeskyttende sjikt på aluminium-bygningsdeler, spesielt på hullegemebygningsdeler med vokskakestruktur. loose production of a corrosion-protective layer on aluminum construction parts, especially on hollow body construction parts with a wax cake structure.
For fremstilling av korrosjonsbeskyttende bygningsdeler er det kjent å påføre beskyttelsessjikt av sink, resp. sinkholdige legeringer på aluminium. Dette kan eksempelvis foregå ved hjelp av metallsprøyting, ved galvanisering, eller ved valseplettering. Fremgangsmåtene fører riktignok til en god vedhengning og mekanisk motstandsdyktighet av beskyttelses-sjiktet, men er imidlertid forholdsvis omstendelig. For the production of corrosion-protective building parts, it is known to apply a protective layer of zinc, resp. zinc-containing alloys on aluminium. This can, for example, take place by means of metal spraying, by galvanizing, or by roller plating. The methods do indeed lead to good adhesion and mechanical resistance of the protective layer, but are however relatively cumbersome.
Videre er det kjent kromaterings- og fosfateringsfremgangsmåte ved hvis hjelp kan påføres dekksjikt på aluminium. Ved en sur fosfateringsfremgangsmåte anvendes oppløsninger av monosinkfosfat, fosforsyre og fluorider. De dannede sjikt er ca. 1-5 ym tykke, og er oppløselige i syrer samt alkalier. De anvendes derfor overveiende for klebegrunning for påstrykning og kunststoffbelegg. Ved ytre påkjenninger som f. eks. i bygningsverk beskyttes sjiktene med et tynt, klart metakrylat eller celluloseacetat-overtrekk, da det ellers er å frykte et korrosjonsangrep, (se Wernick, Pinner, Zurbrtigg og Weiner, Furthermore, there is a known chromating and phosphating method by means of which a cover layer can be applied to aluminium. In an acid phosphating process, solutions of monozinc phosphate, phosphoric acid and fluorides are used. The formed layers are approx. 1-5 ym thick, and are soluble in acids and alkalis. They are therefore mainly used for adhesive primers for ironing and plastic coatings. In case of external stresses such as in buildings, the layers are protected with a thin, clear methacrylate or cellulose acetate coating, as there is otherwise a risk of corrosion attack, (see Wernick, Pinner, Zurbrtigg and Weiner,
"Die Oberflåchenbehandlung von Aluminium", side 193). "Die Oberflåchenbehandlung von Aluminium", page 193).
Den kjemiske overflatebehandling av derav frem-stil té overtrekk, f. eks. kromatsjikt er forholdsvis lett gjennomførbar, gir imidlertid ingen sikker korrosjonsbeskyttelse i sterk korrosiv omgivelse. Spesielt, når det forlanges høyere slitasjebestandighet og slipefasthet er kjemisk frembrakt oksyd-sjikt bare egnet som underlag for organiske overtrekk. The chemical surface treatment of this forward-style coating, e.g. chromate layer is relatively easy to implement, but does not, however, provide reliable corrosion protection in a strongly corrosive environment. In particular, when higher wear resistance and abrasion resistance are required, a chemically produced oxide layer is only suitable as a substrate for organic coatings.
Oppfinnelsens oppgave er å tilveiebringe en fremgangsmåte til frembringelse av korrosjonsbeskyttede bygningsdeler, hvor overtrekkene er forholdsvis enkelt fremstillbare, har en høy slitasjefasthet og korrosjonsbestandighet. The task of the invention is to provide a method for producing corrosion-protected building parts, where the coatings are relatively easy to produce, have a high wear resistance and corrosion resistance.
Oppfinnelsen vedrører altså en fremgangsmåte til strømløs frembringelse av korrosjonsbeskyttende sjikt på alumlniums-bygningsdeler, som minst ved sømstedene Inneholder 6-13* Sl og 0,01-2* Bl eller 6-13* Si og 0,001-1* Be, The invention therefore relates to a method for the electroless production of a corrosion-protective layer on aluminum building parts, which at least at the seam locations contains 6-13* Sl and 0.01-2* Bl or 6-13* Si and 0.001-1* Be,
spesielt på hullegemebygningsdeler med vokskakestruktur, Idet fremgangsmåten er karakterisert ved aluminiumsbygningsdelen dyppes 1 en vandig oppløsning av 100-300 g/l NaOH og 10-30 g/l ZnO 1 1-5 minutter og underkastes en etterfølgende;spyle- especially on hollow body building parts with a wax cake structure, As the method is characterized by the aluminum building part, 1 is dipped in an aqueous solution of 100-300 g/l NaOH and 10-30 g/l ZnO 1 1-5 minutes and subjected to a subsequent; rinse-
og tørkebehandllng. and drying treatment.
Forholdene NaOH/ZnO er fastlagt ved følgende forhold: The NaOH/ZnO ratios are determined by the following conditions:
1. 100 g NaOH og 10 g ZnO. 1. 100 g NaOH and 10 g ZnO.
2. 200 g NaOH og 20 g ZnO. 2. 200 g of NaOH and 20 g of ZnO.
Ved fremgangsmåten Ifølge oppfinnelsen kan aluminiumsbygningsdelen dyppes i en vandig oppløsning av 150-200 g/l NaOH In the method According to the invention, the aluminum building part can be dipped in an aqueous solution of 150-200 g/l NaOH
og 15-20 g/l ZnO. and 15-20 g/l ZnO.
Sinkatoppløsninger av denne sammensetning er prinr sipielt kjent. Således er det i den allerede siterte bok av Wernick og andre "Die Oberflachenbehandlung von Aluminium", side 501 angitt en lignende sammensetning, idet denne sinkatoppløsning anvendes til frembringelse av tynne sinksjikt for en etter-følgende galvanisering. Zincate solutions of this composition are generally known. Thus, in the already cited book by Wernick and others "Die Oberflachenbehandlung von Aluminium", page 501, a similar composition is indicated, this zincate solution being used to produce thin zinc layers for a subsequent galvanization.
Det har vist seg at tilsetningen av 6-13 % Si og 0,01-I 2 % Bi eller 0,001- 1% Be fører til en forsterket sinkutskillelse. Riktignok er det prinsipielt kjent at legeringssammensetningen utøver en innvirkning på sinkutskillelsen ved sinkatbehandlingen (se "Die Oberflachenbehandlung von Aluminium", Werner og andre, side 502). Disse undersøkelser gjaldt imidlertid ikke for de ifølge oppfinnelsen utvalgte områder. It has been shown that the addition of 6-13% Si and 0.01-I 2% Bi or 0.001-1% Be leads to an enhanced zinc precipitation. Admittedly, it is known in principle that the alloy composition exerts an influence on the zinc separation in the zincate treatment (see "Die Oberflachenbehandlung von Aluminium", Werner and others, page 502). However, these investigations did not apply to the areas selected according to the invention.
I det følgende forklares oppfinnelsen nærmere ved, hjelp av to eksempler: In the following, the invention is explained in more detail by means of two examples:
1. Sammenligningsforsøk mellom en ubehandlet aluminiums-bygningsdel en ved grønnkromatering, beskyttét bygningsdel og en ifølge oppfinnelsen behandlet bygningsdel, som ved sømstedene har lo % Si og 0,01 % Bisrnut. Grønnkroma ter ingen ble gjennom-ført ved 45°C badtemperatur med alodine 401/45 i en inndypnings-tid på 1-2 minutter. Behandlingsfremgangsmåten ifølge oppfinnelsen ble gjennomført i to trinn, nemlig med 200 g/l NaOH og 20 g/l ZnO samt 150 g/l NaOH og 15 g/l ZnO. Etter 4 ukers vekseltype-prøve i 5 %-ig kalsiumkloridoppløsning ble det fastslått føl-gende maksimale korrosjonsdybder i tverrslip: 1. Comparison test between an untreated aluminum building part, a building part protected by green chromating and a building part treated according to the invention, which at the seam points has lo % Si and 0.01 % Bisrnut. Green chromate staining was carried out at 45°C bath temperature with alodine 401/45 for an immersion time of 1-2 minutes. The treatment method according to the invention was carried out in two stages, namely with 200 g/l NaOH and 20 g/l ZnO and 150 g/l NaOH and 15 g/l ZnO. After a 4-week alternating-type test in a 5% calcium chloride solution, the following maximum corrosion depths were determined in transverse grinding:
Av dette sammenligningsforsøk fremgår at den maksimale korrosjonsdybde ved fremgangsmåten ifølge oppfinnelsen tydelig er nedsatt i forhold til den kjente fremgangsmåte. Spesielt fordelaktig er behandlingen ifølge oppfinnelsen med 150 g/l NaOH og 15 g/l ZnO. 2. Til sammenligning med et galvanisk frembragt be-skyttelses j ikt ble det fremstillet et grunnlegeme av AlZnMg med et mellomsjikt av sink, og et galvanisk frembragt dekksjikt av Cu, Ni, Cr. Overfor dette ble det fremstillet en ved fremgangsmåten ifølge oppfinnelsen beskyttet bygningsdel av samme bygningstype med bare et sjikt av sink. From this comparison test, it appears that the maximum corrosion depth with the method according to the invention is clearly reduced compared to the known method. The treatment according to the invention with 150 g/l NaOH and 15 g/l ZnO is particularly advantageous. 2. For comparison with a galvanically produced protective coating, a basic body of AlZnMg with an intermediate layer of zinc, and a galvanically produced cover layer of Cu, Ni, Cr was produced. Against this, a building part of the same building type protected by the method according to the invention was produced with only one layer of zinc.
I en kombinert korrosjons- og slitasjeprøve (salt-forstøvningståke og slitasjeprøve, stenslag) viste Idet seg ved det galvaniserte produkt,etter en til å begynne med god korrosjonsbestandighet> sterke oppløsninger og ødeleggelser av dekksjiktet. Dette er å tilbakeføre på en øket kontaktkorrosjon mellom de galvanisk frembrakte sjikt, spesielt Cu og mellomsjiktets Zn resp. senere aluminiums grunnmateriale. Samlet viser denne prøve at også en komplisert og omstendelig frembragt beskyttelses-behandling ikke kan konkurrere med et forholdsvis tynt sinkat-sjikt i henhold til fremgangsmåten..ifølge oppfinnelsen. In a combined corrosion and wear test (salt spray mist and wear test, stone impact) the galvanized product proved itself, after an initially good corrosion resistance> strong dissolution and destruction of the cover layer. This is attributable to increased contact corrosion between the galvanically produced layers, especially Cu and the intermediate layer's Zn resp. later aluminum base material. Overall, this test shows that even a complicated and laboriously produced protective treatment cannot compete with a relatively thin zincate layer according to the method... according to the invention.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3222140A DE3222140C2 (en) | 1982-06-11 | 1982-06-11 | Application of the dip galvanizing process to the production of corrosion-protected aluminum components and corrosion-protected aluminum components |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO832077L NO832077L (en) | 1983-12-12 |
| NO159025B true NO159025B (en) | 1988-08-15 |
| NO159025C NO159025C (en) | 1988-11-23 |
Family
ID=6165918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO832077A NO159025C (en) | 1982-06-11 | 1983-06-08 | PROCEDURE FOR CURRENTLY CREATION OF CORROSION PROTECTIVE ALUMINUM BUILDING PARTS. |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0096753B1 (en) |
| JP (1) | JPS596383A (en) |
| AT (1) | ATE22934T1 (en) |
| DE (1) | DE3222140C2 (en) |
| NO (1) | NO159025C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62220837A (en) * | 1986-03-20 | 1987-09-29 | Hitachi Electronics Eng Co Ltd | Surface inspection system |
| EP1718785A2 (en) * | 2004-02-17 | 2006-11-08 | Tyco Printed Circuit Group LP | Method for zinc coating aluminum |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2650886A (en) * | 1951-01-19 | 1953-09-01 | Aluminum Co Of America | Procedure and bath for plating on aluminum |
| DE2143965C3 (en) * | 1971-09-02 | 1981-11-26 | Vereinigte Aluminium-Werke Ag, 5300 Bonn | Use of a solder for flux-free brazing of aluminum materials in protective gas, inert gas or vacuum |
| FR2201350B2 (en) * | 1972-09-26 | 1977-08-26 | Chausson Usines Sa | |
| US3982055A (en) * | 1974-07-25 | 1976-09-21 | Eltra Corporation | Method for zincating aluminum articles |
-
1982
- 1982-06-11 DE DE3222140A patent/DE3222140C2/en not_active Expired
-
1983
- 1983-05-13 EP EP83104742A patent/EP0096753B1/en not_active Expired
- 1983-05-13 AT AT83104742T patent/ATE22934T1/en not_active IP Right Cessation
- 1983-06-08 NO NO832077A patent/NO159025C/en unknown
- 1983-06-10 JP JP58102937A patent/JPS596383A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3222140C2 (en) | 1984-05-30 |
| JPS596383A (en) | 1984-01-13 |
| NO832077L (en) | 1983-12-12 |
| JPH032952B2 (en) | 1991-01-17 |
| ATE22934T1 (en) | 1986-11-15 |
| EP0096753A1 (en) | 1983-12-28 |
| DE3222140A1 (en) | 1983-12-15 |
| NO159025C (en) | 1988-11-23 |
| EP0096753B1 (en) | 1986-10-15 |
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