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1. WO2013178216 - METHOD FOR COATING A SUBSTRATE CONTAINING COBALT, NICKEL AND/OR IRON WITH A CORROSION-RESISTANT LAYER

Publication Number WO/2013/178216
Publication Date 05.12.2013
International Application No. PCT/DE2013/000295
International Filing Date 29.05.2013
IPC
C23C 24/10 2006.01
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
24Coating starting from inorganic powder
08by application of heat or pressure and heat
10with intermediate formation of a liquid phase in the layer
CPC
C23C 10/02
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
10Solid state diffusion of only metal elements or silicon into metallic material surfaces
02Pretreatment of the material to be coated
C23C 10/28
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
10Solid state diffusion of only metal elements or silicon into metallic material surfaces
28using solids, e.g. powders, pastes
C23C 10/60
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
10Solid state diffusion of only metal elements or silicon into metallic material surfaces
60After-treatment
C23C 18/10
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
18Chemical 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
02by thermal decomposition
08characterised by the deposition of metallic material
10Deposition of aluminium only
C23C 24/106
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
24Coating starting from inorganic powder
08by application of heat or pressure and heat
10with intermediate formation of a liquid phase in the layer
103Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
106Coating with metal alloys or metal elements only
C23C 4/12
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
4Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
12characterised by the method of spraying
Applicants
  • DECHEMA-FORSCHUNGSINSTITUT [DE]/[EC]
Inventors
  • GALETZ, Mathias
  • SCHÜTZE, Michael
  • MONTERO, Xabier
Agents
  • HEBING, Norbert
Priority Data
10 2012 010 602.530.05.2012DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUM BESCHICHTEN EINES KOBALT-, NICKEL- UND/ODER EISENHALTIGEN SUBSTRATS MIT EINER KORROSIONSBESTÄNDIGEN SCHICHT
(EN) METHOD FOR COATING A SUBSTRATE CONTAINING COBALT, NICKEL AND/OR IRON WITH A CORROSION-RESISTANT LAYER
(FR) PROCÉDÉ POUR RECOUVRIR UN SUBSTRAT À BASE DE COBALT, DE NICKEL ET/OU DE FER D'UNE COUCHE RÉSISTANT À LA CORROSION
Abstract
(DE)
Die Erfindung zeigt eine kostengünstige Methode zu Korrosionsschutz von Substraten (Bauteilen) aus kobalt-, nickel- und/oder eisenhaltigen Werkstoffen auf, bei der Rissbildungen im Werkstoff und in einer Korrosionsschutzschicht vermieden werden. Dazu wird ein Aluminium enthaltender Slurry auf ein Substrat (1) aufgebracht und das Substrat (1) anschließend mit dem Slurry einem kurzzeitigen temperaturreduzierten Randschichtglühen unterzogen. Durch die Erwärmung der Randschicht des Substrats und des Slurrys während des Randschichtglühens findet an der Oberfläche des Substrats (1) eine exotherme Reaktion zwischen dem Aluminium und dem Substratmetall (Eisen bzw. Nickel) statt, wodurch Aluminidphasen ausgebildet werden, die eine Aluminid-Diffusionsschicht (4) auf dem Substrat (1) bilden. Darüber befindet sich noch eine Restschicht (6) aus nicht verbrauchtem Slurry.
(EN)
The invention relates to a cost-efficient method for corrosion-proofing substrates (components) made of materials containing cobalt, nickel and/or iron, in which cracking in the material and in a corrosion-proofing layer can be avoided. For this purpose a slurry containing aluminium is applied to a substrate (1) and the substrate (1) together with the applied slurry is then subjected to a brief annealing of the surface layer at reduced temperature. Due to the heating of the surface layer of the substrate and of the slurry during the annealing of the surface layer, an exothermic reaction between the aluminium and the substrate metal (iron or nickel) takes place on the surface of the substrate (1), so that aluminide phases are formed which produce an aluminide diffusion layer (4) on the substrate (1). Above this layer remains a residual layer (6) of unused slurry.
(FR)
L'invention présente un procédé économique pour protéger de la corrosion des structures (pièces) à base de matériaux contenant du cobalt, du nickel et/ou du fer, qui permet d'éviter la formation de craquelures dans le matériau concerné. A cet effet, une suspension épaisse contenant de l'aluminium est appliquée sur un substrat (1) et ledit substrat (1) est ensuite soumis conjointement avec la suspension épaisse à un recuit de couche marginale de courte durée à température réduite. Le réchauffement de la couche marginale du substrat et de la suspension épaisse pendant le recuit de la couche marginale induit une réaction exothermique à la surface du substrat (1) entre l'aluminium et le métal du substrat (fer et/ou nickel), avec pour effet la formation de phases aluminure qui forment une couche de diffusion d'aluminure (4) sur le substrat (1). Une couche résiduelle (6) à base de substance épaisse non utilisée se trouve au-dessus de ladite couche de diffusion d'aluminure.
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