BE890927R - ZINC-ALUMINUM COATING FORMATION PROCESS - Google Patents

ZINC-ALUMINUM COATING FORMATION PROCESS

Info

Publication number
BE890927R
BE890927R BE6/47542A BE6047542A BE890927R BE 890927 R BE890927 R BE 890927R BE 6/47542 A BE6/47542 A BE 6/47542A BE 6047542 A BE6047542 A BE 6047542A BE 890927 R BE890927 R BE 890927R
Authority
BE
Belgium
Prior art keywords
zinc
content
aluminum coating
formation process
coating formation
Prior art date
Application number
BE6/47542A
Other languages
French (fr)
Original Assignee
Centre Rech Metallurgique
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 Centre Rech Metallurgique filed Critical Centre Rech Metallurgique
Priority to BE6/47542A priority Critical patent/BE890927R/en
Application granted granted Critical
Publication of BE890927R publication Critical patent/BE890927R/en

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
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon

Description

       

  CENTRE DE RECHERCHES METALLURGIQUES -

CENTRUM VOOR RESEARCH IN DE METALLURGIE,

  
Association sans but lucratif -

  
Vereniging zonder winstoogmerk

  
à BRUXELLES, ( Be lg ique) .

  
Mémoire descriptif déposé à l'appui d'une demande de brevet de perfectionnement au brevet belge ? 882.431 du 25 mars 1980,

  
et relatif à un procédé de formation de revêtement zinc-aluminium.

  
La présente invention se rapporte à un perfectionnement apporté au brevet belge N[deg.] 882.431, ci-après appelé brevet principal, et relatif à un procédé de formation de revêtement zinc-aluminium.

  
Dans ce brevet principal, on fait mention d'un procédé de formation de revêtement zinc-aluminium sur un substrat constitué par un matériau quelconque, mais de préférence des tôles en acier, caractérisé en ce que l'on utilise un bain métallique composé pour la majorité de zinc et d'aluminium, mais contenant une certaine proportion d'un alliage de terres rares et d'autres métaux, appelé mischmetall. 

  
Suivant une variante avantageuse de ce procédé, la teneur

  
du dit revêtement en mischmetall est supérieure à 0,0005 %

  
et sa teneur en aluminium est comprise entre 3 % et 15 %, présentant l'avantage que les revêtements ainsi constitués

  
ne comportaient pas de "manques" de surface ou autres défauts.

  
Le présent perfectionnement a pour objet de révéler une composition particulière du bain utilisé, composition qui présente l'avantage d'éviter toute corrosion intergranulaire dans le métal ainsi obtenu.

  
La composition particulière faisant l'objet du présent per,'fectionnement est essentiellement caractérisée en ce que, dans le cadre de celle mentionée plus haut comme constituant le brevet principal, les conditions supplémentaires suivantes sont respectées :
- teneur en aluminium, comprise entre 3 % et 7 %,
- teneur en mischmetall, comprise entre 0,0005 % et 0,2 %,
- teneur éventuelle en étain \ 0,02 %,
- teneur éventuelle en plomb / 0,02



  METALLURGICAL RESEARCH CENTER -

CENTRUM VOOR RESEARCH IN DE METALLURGIE,

  
Nonprofit organization -

  
Vereniging zonder winstoogmerk

  
in BRUXELLES, (Be lg ique).

  
Descriptive memory filed in support of a patent application for improvement of the Belgian patent? 882.431 of March 25, 1980,

  
and relating to a process for forming a zinc-aluminum coating.

  
The present invention relates to an improvement made to Belgian patent N [deg.] 882,431, hereinafter called main patent, and relating to a process for forming a zinc-aluminum coating.

  
In this main patent, mention is made of a process for forming a zinc-aluminum coating on a substrate constituted by any material, but preferably steel sheets, characterized in that a compound metal bath is used for the majority of zinc and aluminum, but containing a certain proportion of an alloy of rare earths and other metals, called mischmetall.

  
According to an advantageous variant of this process, the content

  
of said mischmetall coating is greater than 0.0005%

  
and its aluminum content is between 3% and 15%, with the advantage that the coatings thus formed

  
did not contain surface "gaps" or other defects.

  
The object of the present improvement is to reveal a particular composition of the bath used, a composition which has the advantage of avoiding any intergranular corrosion in the metal thus obtained.

  
The particular composition which is the subject of this present invention is essentially characterized in that, within the framework of that mentioned above as constituting the main patent, the following additional conditions are met:
- aluminum content, between 3% and 7%,
- mischmetall content, between 0.0005% and 0.2%,
- possible tin content \ 0.02%,
- possible lead content / 0.02

Claims (1)

REVENDICATION. CLAIM. Procédé de formation d'un revêtement zinc-aluminium sur un substrat constitué par un matériau quelconque, mais de préférence des tôles en acier, conforme à la première revendication du brevet principal, caractérisé en ce que, dans le bain utilisé, Method for forming a zinc-aluminum coating on a substrate made of any material, but preferably steel sheets, according to the first claim of the main patent, characterized in that, in the bath used, - la teneur en aluminium est comprise entre 3 % et 7 %, - la teneur en mischmetall est comprise entre 0,0005 % et 0,2 %, - la teneur éventuelle en étain ne dépasse pas 0,02 %, - la teneur éventuelle en plomb ne dépasse pas 0,02 %. - the aluminum content is between 3% and 7%, - the mischmetall content is between 0.0005% and 0.2%, - the possible content of tin does not exceed 0.02%, - the possible lead content does not exceed 0.02%.
BE6/47542A 1981-10-29 1981-10-29 ZINC-ALUMINUM COATING FORMATION PROCESS BE890927R (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE6/47542A BE890927R (en) 1981-10-29 1981-10-29 ZINC-ALUMINUM COATING FORMATION PROCESS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE6/47542A BE890927R (en) 1981-10-29 1981-10-29 ZINC-ALUMINUM COATING FORMATION PROCESS
BE890927 1981-10-29

Publications (1)

Publication Number Publication Date
BE890927R true BE890927R (en) 1982-02-15

Family

ID=25659762

Family Applications (1)

Application Number Title Priority Date Filing Date
BE6/47542A BE890927R (en) 1981-10-29 1981-10-29 ZINC-ALUMINUM COATING FORMATION PROCESS

Country Status (1)

Country Link
BE (1) BE890927R (en)

Similar Documents

Publication Publication Date Title
ES2581595T3 (en) Hot dipped galvanized steel product highly resistant to corrosion excellent in surface smoothness and forming capacity, and process for the production of hot dipped galvanized steel product
LU83252A1 (en) ZINC-ALUMINUM COATING FORMATION PROCESS
ES8501449A1 (en) Ferrous product having an alloy coating thereon of aluminium-zinc-magnesium-silicon, and method.
US4456663A (en) Hot-dip aluminum-zinc coating method and product
JP2000328216A (en) High corrosion resistance plated steel sheet
BE890927R (en) ZINC-ALUMINUM COATING FORMATION PROCESS
JP3113188B2 (en) High workability hot-dip Zn-Mg-Al alloy plated steel sheet
US6270842B1 (en) Method of galvanizing with molten zinc-aluminum alloy
FR2364972A1 (en) ALLOYS FOR THE PROCESSING OF MELTED METAL
JP3486003B2 (en) High adhesion coating method and plating bath for molten Al-Zn-Si alloy and molten Al-Si alloy by flux method
JPH0323624B2 (en)
US2708304A (en) Aluminum coated articles
JPH06328270A (en) Magnesium-aluminum clad material and manufacture thereof
US6687324B1 (en) Coated metal articles
US5096666A (en) Rare earth and aluminium containing galvanizing bath and method
US2782493A (en) Aluminum coated ferrous article
KR20210068627A (en) HOT-DIP Al-Zn ALLOY COATED STEEL SHEET
JP2510361B2 (en) Molten flux composition for molten aluminum-zinc alloy plating
US3010190A (en) A composite metal body of a ferrous base and aluminum base alloy coat
FR2419336A1 (en) PROCESS FOR IMPROVING THE SURFACE CLEANLINESS OF METAL SHEETS SUCH AS STEEL SHEETS
JPS6032700B2 (en) Zinc alloy for hot-dip plating
JP2000248348A (en) High corrosion resistant hot dip galvanized article and plating method therefor
BE887121A (en) PROCESS FOR THE FORMATION OF ZINC-ALUMINUM COATING
JP3129628B2 (en) Rustproof steel plate for fuel tank
EP0080903A1 (en) Hot-dip aluminium-zinc coatings

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOO

Effective date: 19890331