WO1995021278A1 - Procede au chromate ou au phosphate et materiaux appropries pour determiner le mode de traitement - Google Patents

Procede au chromate ou au phosphate et materiaux appropries pour determiner le mode de traitement Download PDF

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Publication number
WO1995021278A1
WO1995021278A1 PCT/EP1995/000252 EP9500252W WO9521278A1 WO 1995021278 A1 WO1995021278 A1 WO 1995021278A1 EP 9500252 W EP9500252 W EP 9500252W WO 9521278 A1 WO9521278 A1 WO 9521278A1
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WO
WIPO (PCT)
Prior art keywords
ppm
chromating
phosphate
chromate
baths
Prior art date
Application number
PCT/EP1995/000252
Other languages
German (de)
English (en)
Inventor
Antonio Vignati
Lodovico Palladini
Massimo Vanazzi
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
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 Henkel Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Publication of WO1995021278A1 publication Critical patent/WO1995021278A1/fr

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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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/42—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also phosphates
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C23C22/33—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/43—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also hexavalent chromium compounds

Definitions

  • the invention is based on the object, following in practice ent to solve ⁇ standing problem is that the manufacturers of doors and windows made of aluminum give the required profiles depending on the Wirt ⁇ viability at a plurality of suppliers, which chromating or phosphate -Chromatize the profiles and purchase the latter from profile producers. If known materials and processes are used, it is practically impossible, in the event of defects in the coatings, to determine, for compensation, the supplier who has carried out the corresponding treatment or to recognize the affected profile delivery quantity (which differs from others delivery quantities stored in stock), so that their further use is interrupted and further complaints and disadvantages are avoided.
  • the treatment method and in particular the plant where the workpieces were produced should now be ascertainable by the determination of metals present in a chromate or phosphate chromate coating on a support made of aluminum.
  • Chromatate or phosphate-chromate coating is to be understood as meaning a chemically converted coating on the base of chromium chromate or chromium phosphate. Such a coating is obtained by treatments in baths.
  • support made of aluminum here means not only pure aluminum, but also alloys in which aluminum is present in a proportion of at least 50%, for example aluminum alloys with a small proportion of metals such as silicon, magnesium, manganese, iron, copper, etc .
  • the coating solutions and the methods according to the present invention are preferably used on surfaces of aluminum alloys with a moderately shiny and bright appearance. Since chromate or phosphate-chromate treatments are generally known and standardized per se, their description and labeling need not be discussed in more detail
  • various additives are introduced into the chromate or phosphate-chromate baths so that both the treatment baths and the chemically converted coatings can be distinguished chemically from one another.
  • the workpieces made of aluminum or their alloys which are subjected to chromating or phosphate chromating also contain meaningfully detectable amounts of the metal or metals which are present in the bath in the form of salts or oxides, without changing the chemical or physical properties of the coating.
  • the lac film should be carefully removed with the help of solvents so that the chemical properties of the coating are not affected by a chemically acidic or alkaline attack.
  • the treatment process that led to a specific workpiece can be identified with the aid of destructive tests (chemical ablation) or non-destructive tests (superficial microanalysis) of the workpieces treated in this way.
  • destructive tests chemical ablation
  • non-destructive tests architectural microanalysis
  • the specific method according to UNI standard 9921, Appendix E is recommended, whereby only over 4 hours of aging and drying below 40 ° C should be used.
  • the base metal could also be partially removed, so that if the characteristic element is present in the alloy, the results are no longer reliable and reference is therefore made to the non-destructive method.
  • the solution obtained in this way is to be examined with devices for the detection of the metals sought (flame spectrometer for atomic absorption, sequence spectrometer with plasma emission), a preliminary concentration (by slow boiling) of the solution to be examined being carried out, if necessary.
  • the non-destructive tests can be carried out by means of surface mycroanalysis with an EDS sensor (Energy Dispersive Microscopy) attached to SEM (Scanning Electron Microscopy) or by means of similar devices which, in the case of surface analyzes, provide an analytical statement with greater accuracy (ESCA - AUGER etc.) deliver.
  • surface analyzes can be carried out on layers with a particularly small layer thickness of less than 2 ⁇ m using an EDS sensor (i.e. at energies below 15 kV), so the presence of the added metals can be determined.

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)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

On utilise différents additifs tant pour différencier les bains de traitement que les revêtements produits par des réactions chimiques. La différenciation s'effectue par addition aux bains standards de chromate ou de phosphate-chromate d'un ou de plusieurs des métaux suivants, sous forme d'oxydes, d'acides ou de leurs sels: titane, vanadium, manganèse, cobalt, nickel, argent, hafnium, tungstène. L'identification du mode de traitement qui a permis de produire une pièce déterminée, s'effectue de préférence à l'aide de contrôles non destructifs (analyses de surface, microanalyses) des pièces traitées.
PCT/EP1995/000252 1994-02-03 1995-01-25 Procede au chromate ou au phosphate et materiaux appropries pour determiner le mode de traitement WO1995021278A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT94MI000194A ITMI940194A1 (it) 1994-02-03 1994-02-03 Procedimento di cromatazione o fosfocromatazione e prodotti adatti all'identificazione del processo di trattamento
ITMI94A000194 1994-02-03

Publications (1)

Publication Number Publication Date
WO1995021278A1 true WO1995021278A1 (fr) 1995-08-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/000252 WO1995021278A1 (fr) 1994-02-03 1995-01-25 Procede au chromate ou au phosphate et materiaux appropries pour determiner le mode de traitement

Country Status (2)

Country Link
IT (1) ITMI940194A1 (fr)
WO (1) WO1995021278A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351666B3 (de) * 2003-11-05 2005-01-27 Erbslöh Aluminium Gmbh Aluminiumprodukt

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618667A (en) * 1945-04-14 1949-02-24 Jesse Edwin Stareck Improvements in or relating to the colouring and protection of metals and alloys
FR1075264A (fr) * 1952-04-03 1954-10-14 American Chem Paint Co Procédé et produit pour former des revêtements sur des métaux susceptibles d'être attaqués par corrosion
FR1470884A (fr) * 1965-03-09 1967-02-24 Parker Ste Continentale Procédé de formation de revêtements améliorés sur du métal
US3397090A (en) * 1964-11-10 1968-08-13 Hooker Chemical Corp Metal-coating composition and process
GB1128369A (en) * 1964-12-29 1968-09-25 Allied Res Products Inc Improvements in or relating to protective coatings
US3647568A (en) * 1969-10-28 1972-03-07 Macdermid Inc Colored phosphate coatings and method of application
GB2172614A (en) * 1985-03-20 1986-09-24 Omi Int Corp Passivation
JPS6267180A (ja) * 1985-09-19 1987-03-26 Aisin Seiki Co Ltd アルミ合金材の燃料パルプのクロメート処理方法
EP0372915A1 (fr) * 1988-12-07 1990-06-13 Novamax Technologies Corporation Composition et procédé pour revêtir des surfaces métalliques
WO1992003594A1 (fr) * 1990-08-28 1992-03-05 Henkel Corporation Composition et procede de chromatage du metal
JPH04125457A (ja) * 1990-09-17 1992-04-24 Mitsubishi Materials Corp アルミニウム缶およびその製造方法
WO1993000457A1 (fr) * 1991-06-26 1993-01-07 Henkel Corporation Procede de traitement de surface pour l'aluminium
JPH0551764A (ja) * 1991-08-22 1993-03-02 Kawasaki Steel Corp 識別性に優れた有機複合被覆鋼板
WO1993016149A1 (fr) * 1992-02-14 1993-08-19 Basf Italia S.P.A. Sels metalliques utilises comme agents de marquage pour des bitumes combustibles

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618667A (en) * 1945-04-14 1949-02-24 Jesse Edwin Stareck Improvements in or relating to the colouring and protection of metals and alloys
FR1075264A (fr) * 1952-04-03 1954-10-14 American Chem Paint Co Procédé et produit pour former des revêtements sur des métaux susceptibles d'être attaqués par corrosion
US3397090A (en) * 1964-11-10 1968-08-13 Hooker Chemical Corp Metal-coating composition and process
GB1128369A (en) * 1964-12-29 1968-09-25 Allied Res Products Inc Improvements in or relating to protective coatings
FR1470884A (fr) * 1965-03-09 1967-02-24 Parker Ste Continentale Procédé de formation de revêtements améliorés sur du métal
US3647568A (en) * 1969-10-28 1972-03-07 Macdermid Inc Colored phosphate coatings and method of application
GB2172614A (en) * 1985-03-20 1986-09-24 Omi Int Corp Passivation
JPS6267180A (ja) * 1985-09-19 1987-03-26 Aisin Seiki Co Ltd アルミ合金材の燃料パルプのクロメート処理方法
EP0372915A1 (fr) * 1988-12-07 1990-06-13 Novamax Technologies Corporation Composition et procédé pour revêtir des surfaces métalliques
WO1992003594A1 (fr) * 1990-08-28 1992-03-05 Henkel Corporation Composition et procede de chromatage du metal
JPH04125457A (ja) * 1990-09-17 1992-04-24 Mitsubishi Materials Corp アルミニウム缶およびその製造方法
WO1993000457A1 (fr) * 1991-06-26 1993-01-07 Henkel Corporation Procede de traitement de surface pour l'aluminium
JPH0551764A (ja) * 1991-08-22 1993-03-02 Kawasaki Steel Corp 識別性に優れた有機複合被覆鋼板
WO1993016149A1 (fr) * 1992-02-14 1993-08-19 Basf Italia S.P.A. Sels metalliques utilises comme agents de marquage pour des bitumes combustibles

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
ARROWSMITH: "Chromat-Phosphat-Überzüge auf Aluminium", GALVANOTECHNIK, vol. 78, no. 7, 1 July 1987 (1987-07-01), SAULGAU, pages 1874 - 1882 *
CHEMICAL ABSTRACTS, vol. 108, no. 2, 11 January 1988, Columbus, Ohio, US; abstract no. 10167x, KANO: "Chromating of aluminum alloy fuel pipes" page 256; column l; *
DATABASE WPI Week 1493, Derwent World Patents Index; AN 93-113106 *
DATABASE WPI Week 2492, Derwent World Patents Index; AN 92-196457 *
NIKOLOWA M ET AL: "ZUSAMMENSETZUNG UND SCHUTZFUNKTION VON CHROMATUEBERZUEGEN", GALVANOTECHNIK, vol. 82, no. 7, 1 July 1991 (1991-07-01), pages 2321 - 2324, XP000234044 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351666B3 (de) * 2003-11-05 2005-01-27 Erbslöh Aluminium Gmbh Aluminiumprodukt

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Publication number Publication date
ITMI940194A0 (it) 1994-02-03
ITMI940194A1 (it) 1995-08-03

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