EP0042636A2 - Surface treatment of surfaces protected by a metallic coating - Google Patents
Surface treatment of surfaces protected by a metallic coating Download PDFInfo
- Publication number
- EP0042636A2 EP0042636A2 EP81200604A EP81200604A EP0042636A2 EP 0042636 A2 EP0042636 A2 EP 0042636A2 EP 81200604 A EP81200604 A EP 81200604A EP 81200604 A EP81200604 A EP 81200604A EP 0042636 A2 EP0042636 A2 EP 0042636A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- metallic coating
- coating
- stable compounds
- metal
- surface treatment
- 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.)
- Withdrawn
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 33
- 239000011248 coating agent Substances 0.000 title claims abstract description 30
- 238000004381 surface treatment Methods 0.000 title claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000011241 protective layer Substances 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 27
- 229910052725 zinc Inorganic materials 0.000 claims description 15
- 239000011701 zinc Substances 0.000 claims description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 229910052776 Thorium Inorganic materials 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000004320 controlled atmosphere Methods 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 229910052745 lead Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 229910052714 tellurium Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004532 chromating Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 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
- 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
-
- 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
- C23C2/26—After-treatment
-
- 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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
Definitions
- the present invention relates to a method of surface treatment of surfaces protected by a metal coating and belonging to a metal substrate of any shape, but preferably in the form of steel sheets.
- a zinc-coated material is usually subjected to a surface transformation treatment (for example, chromating and phosphating) suitable for zinc, after the application of the zinc coating to delay the appearance of white rust on the zinc deposit.
- a surface transformation treatment for example, chromating and phosphating
- a coating of zinc-compatible paint is also generally applied, in addition to the transformation treatment, in order to improve the corrosion resistance and the decorative appearance.
- alloys such as, for example, zinc and aluminum has not provided definitive solutions to these problems, but it is known that the implementation of this type of coating requires more extensive surface preparation which has the disadvantage of being very expensive.
- the process which is the subject of the present invention is based on work relating to the analysis of the structure of the coating layers.
- the process which is the subject of the present invention is essentially characterized in that a metallic coating bath is used to which one or more determined elements have been added and in that the metallic coating obtained is subjected to a surface treatment which has the effect of generating on the coating obtained an additional protective layer formed of stable compounds.
- a first variant of the process of the invention consists in using a metal bath containing zinc.
- a second variant of the process which is the subject of the present invention consists in using a metal bath containing zinc and aluminum.
- the Al content of the above-mentioned original metal bath is less than 0.4% by weight.
- Another method of applying the method according to the invention consists in using a metal bath containing one or more of the following elements: Zn, Al, Mg, Pb, Sb.
- the determined element or elements which have been added to the metal bath are selected from the following: Al, Be, Ce, Cr, La, Mn, Mo, Si , Ta, Ti, Te, Th.
- a sixth method of implementing the process consists in subjecting the metal coating to a thermal surface treatment intended to form stable compounds on its surface.
- a seventh method of implementing the method consists in subjecting the metallic coating formed to a treatment under a controlled atmosphere with a view to forming stable compounds on its surface.
- a treatment is applied to the metallic coating formed which uses a chemical solution such that there is formation of stable compounds on its surface.
- the stable compounds formed on the surface of the metallic coating involve one or more of the determined elements added to the metallic coating bath.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Thermal Sciences (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
La présente invention concerne un procédé de traitement superficiel de surfaces protégées par un revêtement métallique et appartenant à un substrat métallique de forme quelconque, mais se présentant de préférence sous forme de tôles d'acier.The present invention relates to a method of surface treatment of surfaces protected by a metal coating and belonging to a metal substrate of any shape, but preferably in the form of steel sheets.
Il est connu depuis longtemps de protéger les matériaux métalliques, susceptibles d'être attaqués par la corrosion, au moyen de revêtements métalliques (par exemple de zinc, d'étain, d'aluminium, etc...).It has long been known to protect metallic materials which are susceptible to corrosion attack by means of metallic coatings (for example zinc, tin, aluminum, etc.).
Toutefois, l'emploi de matériaux d'acier à revêtement métallique, par exemple de zinc, dans des conditions rigoureuses au point de vue du milieu corrosif concerné, a permis de montrer qu'un seul revêtement métallique traditionnel, ou comme par exemple un seul revêtement de zinc, n'a pas été en mesure de résoudre tous les problèmes posés par la corrosion et de satisfaire les conditions imposées.However, the use of steel materials with metallic coating, for example zinc, under rigorous conditions from the point of view of the corrosive medium concerned, made it possible to show that a single traditional metallic coating, or for example a single zinc coating, was not able to solve all the problems posed by corrosion and to satisfy the conditions imposed.
C'est ainsi qu'un matériau à revêtement de zinc est habituellement soumis à un traitement superficiel de transformation (par exemple une chromatation et une phosphatation) appropriée pour le zinc et ce, après l'application du revêtement de zinc pour retarder l'apparition de rouille blanche sur le dépôt de zinc.For example, a zinc-coated material is usually subjected to a surface transformation treatment (for example, chromating and phosphating) suitable for zinc, after the application of the zinc coating to delay the appearance of white rust on the zinc deposit.
De même, on applique aussi généralement, en plus du traitement de transformation, un revêtement de peinture compatible avec le zinc, afin d'améliorer la résistance à la corrosion et l'aspect décoratif.Likewise, a coating of zinc-compatible paint is also generally applied, in addition to the transformation treatment, in order to improve the corrosion resistance and the decorative appearance.
La mise au point d'alliages comme par exemple de zinc et d'aluminium n'a pas apporté des solutions définitives à ces problèmes, mais il est connu que lamise en oeuvre de ce type de revêtement exige une préparation de surface plus poussée et qui présente l'inconvénient d'être fort coûteuse.The development of alloys such as, for example, zinc and aluminum has not provided definitive solutions to these problems, but it is known that the implementation of this type of coating requires more extensive surface preparation which has the disadvantage of being very expensive.
Le procédé, objet de la présente invention, est basé sur des travaux ayant trait à l'analyse de la structure des couches de revêtements.The process which is the subject of the present invention is based on work relating to the analysis of the structure of the coating layers.
Les différents essais effectués sur les revêtements obtenus à partir de bains métalliques divers, auxquels on a ajouté certains éléments bien définis, ont permis de constater un phénomène de concentration de ces éléments dans certaines couches privilégiées des revêtements, à savoir les couches externes par rapport au substrat revêtu.The various tests carried out on the coatings obtained from various metal baths, to which certain well-defined elements have been added, have made it possible to note a phenomenon of concentration of these elements in certain preferred layers of the coatings, namely the external layers with respect to the coated substrate.
Des travaux ultérieurs ont pu définir un procédé qui exploite ce phénomène de concentration de ces éléments dans certaines couches localisées du revêtement et permet de créer 10 une couche protectrice supplémentaire et ce par l'application d'un traitement thermique et/ou chimique sur la surface du revêtement métallique formé à partir du bain métallique précité.Subsequent work has been able to define a process which exploits this phenomenon of concentration of these elements in certain localized layers of the coating and makes it possible to create 10 an additional protective layer, this by applying a heat and / or chemical treatment to the surface of the metal coating formed from the aforementioned metal bath.
Le procédé, objet de la présente invention, est essentiellement caractérisé en ce que l'on utilise un bain métallique de revêtement auquel on a ajouté un ou plusieurs éléments déterminés et en ce que l'on fait subir au revêtement métallique obtenu un traitement supérficiel qui a pour effet d'engendrer sur le revêtement obtenu une couche supplémentaire de protection formée de composés stables.The process which is the subject of the present invention is essentially characterized in that a metallic coating bath is used to which one or more determined elements have been added and in that the metallic coating obtained is subjected to a surface treatment which has the effect of generating on the coating obtained an additional protective layer formed of stable compounds.
Une première variante du procédé de l'invention consiste à utiliser un bain métallique contenant du zinc.A first variant of the process of the invention consists in using a metal bath containing zinc.
Une deuxième variante du procédé, objet de la présente invention, consiste à utiliser un bain métallique contenant du zinc et de l'aluminium.A second variant of the process which is the subject of the present invention consists in using a metal bath containing zinc and aluminum.
Suivant une autre variante du procédé de la présente invention, la teneur en Al du bain métallique d'origine précitée est inférieure à 0,4 %en poids.According to another variant of the process of the present invention, the Al content of the above-mentioned original metal bath is less than 0.4% by weight.
Une autre modalité d'application du procédé suivant l'invention, consiste à utiliser un bain métallique contenant un ou plusieurs des éléments suivants : Zn, Al, Mg, Pb, Sb.Another method of applying the method according to the invention consists in using a metal bath containing one or more of the following elements: Zn, Al, Mg, Pb, Sb.
Dans une autre variante de mise en oeuvre du procédé de l'invention, le ou les éléments déterminés que l'on a ajouté au bain métallique sont sélectionnés parmi les suivants : Al, Be, Ce, Cr, La, Mn, Mo, Si, Ta, Ti, Te, Th.In another variant implementation of the method of the invention, the determined element or elements which have been added to the metal bath are selected from the following: Al, Be, Ce, Cr, La, Mn, Mo, Si , Ta, Ti, Te, Th.
Une sixième modalité de mise en oeuvre du procédé, consiste à faire subir au revêtement métallique, un traitement superficiel thermique destiné à former des composés stables à sa surface.A sixth method of implementing the process consists in subjecting the metal coating to a thermal surface treatment intended to form stable compounds on its surface.
Une septième modalité de mise en oeuvre du procédé consiste à faire subir au revêtement métallique formé, un traitement sous atmosphère contrôlée en vue de former des composés stables à sa surface.A seventh method of implementing the method consists in subjecting the metallic coating formed to a treatment under a controlled atmosphere with a view to forming stable compounds on its surface.
Suivant une autre variante du procédé objet de l'invention, on applique au revêtement métallique formé un traitement qui met en oeuvre une solution chimique telle qu'il y a formation de composés stables à sa surface.According to another variant of the process which is the subject of the invention, a treatment is applied to the metallic coating formed which uses a chemical solution such that there is formation of stable compounds on its surface.
Suivant une dernière modalité de mise en oeuvre du procédé de l'invention, les composés stables formés à la surface du revêtement métallique font intervenir un ou plusieurs des éléments déterminés ajoutés au bain métallique de revêtement.According to a final method of implementing the process of the invention, the stable compounds formed on the surface of the metallic coating involve one or more of the determined elements added to the metallic coating bath.
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE647182 | 1980-06-09 | ||
| BE6/47182A BE883723A (en) | 1980-06-09 | 1980-06-09 | METHOD FOR THE SURFACE TREATMENT OF SURFACES PROTECTED BY A METAL COATING |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0042636A2 true EP0042636A2 (en) | 1981-12-30 |
| EP0042636A3 EP0042636A3 (en) | 1982-01-13 |
Family
ID=3874857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81200604A Withdrawn EP0042636A3 (en) | 1980-06-09 | 1981-06-03 | Surface treatment of surfaces protected by a metallic coating |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0042636A3 (en) |
| BE (1) | BE883723A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127504A1 (en) * | 1981-07-11 | 1983-01-27 | Preussag Ag Metall, 3380 Goslar | Method for suppressing the formation of stibine |
| EP0148740A1 (en) * | 1983-12-22 | 1985-07-17 | CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif | Method for hot coating and bath composition therefor |
| GB2224041A (en) * | 1988-09-02 | 1990-04-25 | Verdun Hildreth Farnsworth | Galvanising bath |
| US5141680A (en) * | 1988-04-18 | 1992-08-25 | 3D Systems, Inc. | Thermal stereolighography |
| FR2676752A1 (en) * | 1991-05-24 | 1992-11-27 | Siderurgie Fse Inst Rech | Process for galvanising metallurgical products, especially steel sheets and coating obtained by this process |
| EP0852264A1 (en) * | 1997-01-02 | 1998-07-08 | Industrial Galvanizadora S.A. | Zinc alloys yielding anticorrosive coatings on ferrous materials |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR884466A (en) * | 1941-10-11 | 1943-08-18 | Westfalische Union Ag Fu R Eis | Zinc-coated wire manufacturing process |
| US3056694A (en) * | 1958-07-11 | 1962-10-02 | Inland Steel Co | Galvanizing process |
| FR1530948A (en) * | 1966-07-11 | 1968-06-28 | Cominco Ltd | Process for producing colored coatings, in particular based on zinc |
| FR2007519A1 (en) * | 1968-04-25 | 1970-01-09 | Nippon Kokan Kk | |
| US4152472A (en) * | 1973-03-19 | 1979-05-01 | Nippon Steel Corporation | Galvanized ferrous article for later application of paint coating |
| GB1566198A (en) * | 1977-02-26 | 1980-04-30 | Inland Steel Co | Zincaluminium alloy coating and method of hot-dip coating |
-
1980
- 1980-06-09 BE BE6/47182A patent/BE883723A/en not_active IP Right Cessation
-
1981
- 1981-06-03 EP EP81200604A patent/EP0042636A3/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR884466A (en) * | 1941-10-11 | 1943-08-18 | Westfalische Union Ag Fu R Eis | Zinc-coated wire manufacturing process |
| US3056694A (en) * | 1958-07-11 | 1962-10-02 | Inland Steel Co | Galvanizing process |
| FR1530948A (en) * | 1966-07-11 | 1968-06-28 | Cominco Ltd | Process for producing colored coatings, in particular based on zinc |
| FR2007519A1 (en) * | 1968-04-25 | 1970-01-09 | Nippon Kokan Kk | |
| US4152472A (en) * | 1973-03-19 | 1979-05-01 | Nippon Steel Corporation | Galvanized ferrous article for later application of paint coating |
| GB1566198A (en) * | 1977-02-26 | 1980-04-30 | Inland Steel Co | Zincaluminium alloy coating and method of hot-dip coating |
Non-Patent Citations (1)
| Title |
|---|
| Stahl und Eisen, No. 12, 1964, W. RADEKER: "Die Wirkung von Legieringszusätzen auf die Eigenschaften von Feuerverzinkten Überzügen", pages 713-718 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127504A1 (en) * | 1981-07-11 | 1983-01-27 | Preussag Ag Metall, 3380 Goslar | Method for suppressing the formation of stibine |
| EP0148740A1 (en) * | 1983-12-22 | 1985-07-17 | CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif | Method for hot coating and bath composition therefor |
| US5141680A (en) * | 1988-04-18 | 1992-08-25 | 3D Systems, Inc. | Thermal stereolighography |
| GB2224041A (en) * | 1988-09-02 | 1990-04-25 | Verdun Hildreth Farnsworth | Galvanising bath |
| US5096666A (en) * | 1988-09-02 | 1992-03-17 | Farnsworth Verdun H | Rare earth and aluminium containing galvanizing bath and method |
| FR2676752A1 (en) * | 1991-05-24 | 1992-11-27 | Siderurgie Fse Inst Rech | Process for galvanising metallurgical products, especially steel sheets and coating obtained by this process |
| EP0852264A1 (en) * | 1997-01-02 | 1998-07-08 | Industrial Galvanizadora S.A. | Zinc alloys yielding anticorrosive coatings on ferrous materials |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0042636A3 (en) | 1982-01-13 |
| BE883723A (en) | 1980-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2499933C (en) | Corrosion-resistant coated copper and method for making the same | |
| LU83252A1 (en) | ZINC-ALUMINUM COATING FORMATION PROCESS | |
| US4546051A (en) | Aluminum coated steel sheet and process for producing the same | |
| FR2721327A1 (en) | Lead-free, tin@-zinc@ alloy coating for metallic architectural materials | |
| EP1583851B1 (en) | Corrosion resistant poly-metal diffusion coatings and a method of applying same | |
| GB2284618A (en) | Steel having a corrosion resistant intermetallic surface layer | |
| EP0042636A2 (en) | Surface treatment of surfaces protected by a metallic coating | |
| EP0037143B1 (en) | Hot dip coating process | |
| Lynch | Hot-dip galvanizing alloys | |
| US3058206A (en) | Aluminum coating of ferrous metal and resulting product | |
| US2782493A (en) | Aluminum coated ferrous article | |
| US3268358A (en) | Diffusion cladding | |
| FR2790010A1 (en) | STEEL ALUMINATION PROCESS FOR PROVIDING A LOW THICKNESS INTERFACIAL ALLOY LAYER | |
| EP0095402B1 (en) | Method and alloy for the hot dip galvanizing of silicon steel, and galvanized articles | |
| GB2122650A (en) | Aluminium coated steel sheet and process for producing the same | |
| EP0081847B1 (en) | Enameling process | |
| JPS6227536A (en) | Zinc alloy for galvanizing and its using method | |
| JPH0394050A (en) | Flux for galvanizing zn-al alloy | |
| BE897788A (en) | Zinc:aluminium:iron coating - made esp. by immersing substrate in molten zinc contg. aluminium and then using diffusion treatment | |
| BE1013517A3 (en) | Galvanizing process for steel plates. | |
| BE1011315A6 (en) | Method for forming a zinc-aluminium coating on a steel component and a component coated in this way | |
| JP2000248348A (en) | High corrosion resistant hot dip galvanized article and plating method therefor | |
| JP2825675B2 (en) | Manufacturing method of galvannealed steel sheet with excellent workability | |
| BE887121A (en) | PROCESS FOR THE FORMATION OF ZINC-ALUMINUM COATING | |
| JPH0472047A (en) | Aluminum/zinc alloy hot-dip coated material and aluminum/zinc alloy hot-dip coating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Designated state(s): DE FR GB IT LU NL |
|
| AK | Designated contracting states |
Designated state(s): DE FR GB IT LU NL |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19821217 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: COUTSOURADIS, DIMITRI Inventor name: PELERIN, JACQUES |