EP0677592A1 - Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs - Google Patents

Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs Download PDF

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Publication number
EP0677592A1
EP0677592A1 EP95105427A EP95105427A EP0677592A1 EP 0677592 A1 EP0677592 A1 EP 0677592A1 EP 95105427 A EP95105427 A EP 95105427A EP 95105427 A EP95105427 A EP 95105427A EP 0677592 A1 EP0677592 A1 EP 0677592A1
Authority
EP
European Patent Office
Prior art keywords
metals
metal oxides
hard materials
enhancing
spraying
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.)
Granted
Application number
EP95105427A
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German (de)
English (en)
Other versions
EP0677592B1 (fr
Inventor
Jochen Dr. Spriestersbach
Wolf-Dieter Dr. Schulz
Manfred Seidel
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.)
Grillo Werke AG
Original Assignee
Grillo Werke AG
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Filing date
Publication date
Application filed by Grillo Werke AG filed Critical Grillo Werke AG
Publication of EP0677592A1 publication Critical patent/EP0677592A1/fr
Application granted granted Critical
Publication of EP0677592B1 publication Critical patent/EP0677592B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment

Definitions

  • the present invention relates to a method for improving the adhesive strength of thermal spray coatings made from metals, metal oxides and hard materials, in particular from zinc, aluminum and their alloys.
  • Thermal spray coatings play an important role in the surface finishing of metals, but also of plastics, concrete, cardboard, etc. Among other things, they improve the temperature resistance, wear behavior and electrical conductivity of the substrate materials.
  • EP-US 0 451 512 describes a method for coating blades of a rotating, thermal machine, a special protective layer being applied to the blades in the high-speed flame spraying method.
  • This layer can then be given a top layer of polyurethane reaction lacquer on a plastic basis.
  • the surface roughness should be reduced.
  • Two-component paints are therefore preferably used; see. Column 5, line 52 to column 6, line 6. It is about reducing the surface roughness and not about the adhesive strength of the layer applied in the high-speed flame spraying process.
  • DE-PS 38 25 200 describes a method for coating plastic parts, in which the metal layer sprayed onto the roughened plastic surface is impregnated with a plastic.
  • this plastic can be a low-viscosity polyurethane system. This measure guarantees perfect adhesion of the sprayed metal to the plastic, produces a high specific conductivity and guarantees reliable protection against external mechanical attacks; see. Column 1, lines 61 to 65.
  • DE-PS 38 25 200 teaches that the transfer of flame spraying from metals to metals to the coating of plastics with metals leads to considerable difficulties; see. Column 1, lines 41 to 46.
  • Thermal spraying of, for example, zinc, aluminum and their alloys, for example with magnesium is often the only way of protecting against corrosion by metal coatings under construction site conditions, since other processes such as hot-dip galvanizing and galvanizing are hardly possible on site.
  • the production of thermal spray coatings on metals usually requires the following high-quality technology steps: degreasing, blasting, spraying and generally post-treatment.
  • the purity and roughness of the surface of the substrate are of particular importance. It is usually required that a standard degree of purity Sa 3 according to DIN 55928, part 4 is achieved and that the average roughness R z is at least 25 ⁇ m. A certain sharpness of the profile is often necessary.
  • spraying methods for example flame spraying, arc spraying and plasma spraying, since these different methods generate different temperatures that are necessary for the melting of the spraying material.
  • Optimally produced layers have adhesive strengths of 20 to 50 MPa.
  • the spray layers are more or less dense depending on the thickness and type of spray. To ensure adequate protection against corrosion, they usually have densities of 100 to 300 ⁇ m in thickness.
  • one-component, moisture-curing polyurethane paints have only been used to treat heavily rusted or corroded steel substrates, whereby the residual moisture in the substrate is obviously bound and rust residues are solidified on the steel surface.
  • These one-component polyurethane coatings are generally used as low-viscosity solutions in organic solvents, which are able to detect crevices, overlaps and structured substrates with good creeping ability.
  • a one-component, moisture-curing polyurethane varnish is offered, for example, by Steelpaint GmbH, Kitzingen.
  • the adhesive strength increases by the treatment according to the invention in the case of sprayed zinc and sprayed aluminum layers by approximately a factor of 3. In the case of ceramic layers, for example made of aluminum oxide, the adhesive strength increases to approximately 20 to 25 MPa.
  • a degreased workpiece made of steel is prepared by means of compressed air jets up to the degree of cleaning Sa 3 and an average roughness depth R z of 45 ⁇ m. Subsequently, the workpiece prepared in this way is cleaned of any adhering blasting impurities as much as possible using compressed air and provided with a 150 ⁇ m thick spray coating made of zinc.
  • the adhesive strength measurements carried out by forehead deduction result in values between 5 and 7 MPa.
  • the spray metal layer is then thinly coated with a normal, commercially available, low-viscosity 1-component PU coating material by brush application so that no measurable layer build-up takes place. After the coating has hardened, the adhesive strength of the sprayed metal layer, measured by the same method, is 15 to 20 MPa.
  • a degreased steel workpiece is prepared using compressed air jets up to a cleaning level of 2.5 and an average roughness depth R z of 25 ⁇ m. Then a 100 ⁇ m thick ceramic Al2O3 layer is applied to the not cleaned surface by means of powder flame spraying. The adhesive strength measurements carried out result in 12 MPa. The ceramic spray coating is then thinly coated with a normal, commercially available 1-component PU coating material using compressed air spraying. After the coating has hardened, the adhesive strength of the spray ceramic layer is more than 25 MPa.
  • a particular advantage of the method according to the invention is that the adhesive strength of thermal spray coatings is increased reliably and significantly by a simple aftertreatment, so that the service life of the other customary coating systems applied thereon is also significantly increased.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
EP95105427A 1994-04-14 1995-04-11 Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs Expired - Lifetime EP0677592B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4412795 1994-04-14
DE4412795 1994-04-14

Publications (2)

Publication Number Publication Date
EP0677592A1 true EP0677592A1 (fr) 1995-10-18
EP0677592B1 EP0677592B1 (fr) 1998-12-30

Family

ID=6515339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95105427A Expired - Lifetime EP0677592B1 (fr) 1994-04-14 1995-04-11 Procédé pour améliorer l'adhérence de revêtements par pulvérisation thermique, composés de métaux, oxydes métalliques et matériaux durs

Country Status (3)

Country Link
EP (1) EP0677592B1 (fr)
AT (1) ATE175246T1 (fr)
DE (1) DE59504660D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0853135A1 (fr) * 1996-05-24 1998-07-15 Nippon Steel Hardfacing Co., Ltd. Procede pour renforcer un revetement pulverise
DE19748105C1 (de) * 1997-10-31 1998-10-29 Grillo Werke Ag Verfahren zur Verbesserung der Korrosionsbeständigkeit von Stahlbeton
CN113005796A (zh) * 2021-03-01 2021-06-22 江苏卓尔诺光电科技有限公司 一种耐腐蚀海工光缆用镀锌钢绞线及其制备工艺

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1115121A (fr) * 1954-11-26 1956-04-19 Schneider Werke G M B H Procédé de revêtement d'objets en métaux ferreux et objets obtenus par ce procédé
FR1355378A (fr) * 1962-05-07 1964-03-13 Metallurg Ges Fuer Metallurg P Procédé pour couvrir des objets d'une couche de matière plastique
DE2121167A1 (de) * 1970-04-29 1971-11-11 Ici Ltd Metallisierte Filme und Verfahren zu deren Herstellung
JPS5440885A (en) * 1977-09-07 1979-03-31 Iwasaki Electric Co Ltd Laminate with metal base and its making method
JPS57171472A (en) * 1981-04-16 1982-10-22 Sumitomo Metal Ind Ltd Corrosion-inhibition of steel material to be used under atmosphere in contact with strong alkali of concrete
EP0125582A2 (fr) * 1983-05-11 1984-11-21 Henkel Kommanditgesellschaft auf Aktien Utilisation d'une colle expansive de polyuréthane pour la connexion de matériaux isolants avec des parties de bâtiments
EP0143360A2 (fr) * 1983-11-02 1985-06-05 Kleinert, Viktor Masse de revêtement pour l'acier et le fer, son utilisation et procédé d'obtention d'un revêtement protecteur
DE3531892A1 (de) * 1984-09-07 1986-03-20 Nippon Steel Corp., Tokio/Tokyo Stahlgegenstand mit einer antikorrosiven hochleistungsbeschichtung
JPS62136276A (ja) * 1985-12-09 1987-06-19 Toho Kasei Kk 定着用ヒ−トロ−ルの加工方法
EP0351728A2 (fr) * 1988-07-21 1990-01-24 Teroson GmbH Procédé de fabrication d'un toron de matière d'étanchement ou d'adhésif.
DE3825200C1 (en) * 1988-07-25 1990-02-01 Aeg Isolier- Und Kunststoff Gmbh, 3500 Kassel, De Process for coating plastic components with metals
JPH03249187A (ja) * 1990-02-27 1991-11-07 Hino Motors Ltd 自動車用外装部品の光輝処理方法

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1115121A (fr) * 1954-11-26 1956-04-19 Schneider Werke G M B H Procédé de revêtement d'objets en métaux ferreux et objets obtenus par ce procédé
FR1355378A (fr) * 1962-05-07 1964-03-13 Metallurg Ges Fuer Metallurg P Procédé pour couvrir des objets d'une couche de matière plastique
DE2121167A1 (de) * 1970-04-29 1971-11-11 Ici Ltd Metallisierte Filme und Verfahren zu deren Herstellung
JPS5440885A (en) * 1977-09-07 1979-03-31 Iwasaki Electric Co Ltd Laminate with metal base and its making method
JPS57171472A (en) * 1981-04-16 1982-10-22 Sumitomo Metal Ind Ltd Corrosion-inhibition of steel material to be used under atmosphere in contact with strong alkali of concrete
EP0125582A2 (fr) * 1983-05-11 1984-11-21 Henkel Kommanditgesellschaft auf Aktien Utilisation d'une colle expansive de polyuréthane pour la connexion de matériaux isolants avec des parties de bâtiments
EP0143360A2 (fr) * 1983-11-02 1985-06-05 Kleinert, Viktor Masse de revêtement pour l'acier et le fer, son utilisation et procédé d'obtention d'un revêtement protecteur
DE3531892A1 (de) * 1984-09-07 1986-03-20 Nippon Steel Corp., Tokio/Tokyo Stahlgegenstand mit einer antikorrosiven hochleistungsbeschichtung
JPS62136276A (ja) * 1985-12-09 1987-06-19 Toho Kasei Kk 定着用ヒ−トロ−ルの加工方法
EP0351728A2 (fr) * 1988-07-21 1990-01-24 Teroson GmbH Procédé de fabrication d'un toron de matière d'étanchement ou d'adhésif.
DE3825200C1 (en) * 1988-07-25 1990-02-01 Aeg Isolier- Und Kunststoff Gmbh, 3500 Kassel, De Process for coating plastic components with metals
JPH03249187A (ja) * 1990-02-27 1991-11-07 Hino Motors Ltd 自動車用外装部品の光輝処理方法

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; AN 79-35904b c19 *
JURGEN FOCK: "feuchtigkeitshartende polyurethanklebstoffe", ADHASION, vol. 32, no. 10, MUNCHEN,DE, pages 13 - 19, XP000023533 *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 365 (C - 460) 27 November 1987 (1987-11-27) *
PATENT ABSTRACTS OF JAPAN vol. 16, no. 43 (C - 0907) 4 February 1992 (1992-02-04) *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 14 (C - 146) 20 January 1983 (1983-01-20) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0853135A1 (fr) * 1996-05-24 1998-07-15 Nippon Steel Hardfacing Co., Ltd. Procede pour renforcer un revetement pulverise
EP0853135A4 (fr) * 1996-05-24 2000-10-25 Nippon Steel Hardfacing Procede pour renforcer un revetement pulverise
DE19748105C1 (de) * 1997-10-31 1998-10-29 Grillo Werke Ag Verfahren zur Verbesserung der Korrosionsbeständigkeit von Stahlbeton
WO1999023282A1 (fr) * 1997-10-31 1999-05-14 Grillo-Werke Ag Procede permettant d'augmenter la resistance a la corrosion du beton arme
US6224943B1 (en) 1997-10-31 2001-05-01 Grillo-Werke Ag Method for improving the corrosion resistance of reinforced concrete
CN113005796A (zh) * 2021-03-01 2021-06-22 江苏卓尔诺光电科技有限公司 一种耐腐蚀海工光缆用镀锌钢绞线及其制备工艺

Also Published As

Publication number Publication date
DE59504660D1 (de) 1999-02-11
EP0677592B1 (fr) 1998-12-30
ATE175246T1 (de) 1999-01-15

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