EP2825681A1 - Bauteil mit einer metallurgisch angebundenen beschichtung - Google Patents

Bauteil mit einer metallurgisch angebundenen beschichtung

Info

Publication number
EP2825681A1
EP2825681A1 EP13709865.3A EP13709865A EP2825681A1 EP 2825681 A1 EP2825681 A1 EP 2825681A1 EP 13709865 A EP13709865 A EP 13709865A EP 2825681 A1 EP2825681 A1 EP 2825681A1
Authority
EP
European Patent Office
Prior art keywords
layer
coating
component
remelted
metallurgically bonded
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Withdrawn
Application number
EP13709865.3A
Other languages
German (de)
English (en)
French (fr)
Inventor
Götz Matthäus
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.)
Thermico & Co KG GmbH
Original Assignee
Thermico & Co KG GmbH
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 Thermico & Co KG GmbH filed Critical Thermico & Co KG GmbH
Publication of EP2825681A1 publication Critical patent/EP2825681A1/de
Withdrawn legal-status Critical Current

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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134—Plasma spraying
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Definitions

  • the invention relates to a component with a metallurgically bonded and thermally sprayed and remelted coating.
  • the invention relates to a method for producing a metallurgically bonded coating which is thermally sprayed onto a surface of a component and remelted.
  • Metallurgically bonded coatings whose production combines the advantages of thermal spraying with those of laser remelting, have high-quality wear and corrosion protection properties.
  • the industrial implementation is such that, after the coating, which for example is in the form of an IN 625 HVOF layer, is applied to a surface of a component, such as a turbine blade, individual melting lines are formed by the movement of a concentrated circle and approximately circular, rectangular or elliptical shaped light spot can be generated.
  • the necessary movement devices of the beam guides require high accuracy, which depends on the geometry of the melting point, the requirements of the overlap of the melting lines and the required reproducibility of the generation of the melting line.
  • a metallurgically bonded coating of the type mentioned initially discloses, for example, GB 10 39 633, wherein the remelting of a thermally sprayed layer takes place by means of a laser device which guides a punctiform point of light over the sprayed-on layer and melts it.
  • a laser device which guides a punctiform point of light over the sprayed-on layer and melts it.
  • both the respective spray position and the entire layer by means of the laser has been remelted.
  • Metallurgically bonded coatings of the type mentioned at the outset also address a recently published paper that deals with the residual stresses of laser-fused IN 625 HVOF layers applied to steel and TI6AI4V. In the process, residual tensile stresses were found in the remelted IN 625 layer.
  • the publication shows the difficulties, uncritical stress states, i. E. Neutral and Druckeinhard to achieve by means of laser remelting.
  • a C0 2 laser with a round laser spot was used, which was guided at a frequency of 200 Hz over a length of 126 mm over the component surface (Arif, AFM, Yilbas, BS, Surface Engineering, Volume 25, No. 3, April 2009 , pp 249-256).
  • the invention provides that the metallurgically bonded coating is provided with at least one thermal spray coating.
  • the core idea of the invention is to provide the metallurgically bonded coating with a cover layer which is thermally sprayed on. Surprisingly, it has been found that when a component is stretched to which a metallurgical coating is bonded, only the top layer is torn over the value permitted for the top layer. In the coating according to the invention, therefore, no continuation of the crack takes place in the remelted coating. Thus, a dense anticorrosive layer is further provided, which is the base material, ie. the material of the component, protects against corrosion attack.
  • a concrete component according to one of claims 1 to 10 are double cylinders and screws, which are used in plastic processing extrusion machines.
  • double cylinder two screws, and the like, promote and compact.
  • thermoplastic plastic material such as PVC under high pressure and temperature.
  • the plastic materials are admixed with abrasive additives such as glass fiber, wood flour and dyes.
  • the proportion of abrasive additives may be more than 50% by volume.
  • the double cylinders and screws are exposed to heavy wear, in addition, the screws are based on the cylinder inner surface, which leads to a high surface pressure and flexing load of the surfaces.
  • decomposition of PVC can occur and hydrochloric acid can form, causing corrosion on the cylinder and screw.
  • HVOF coatings based on WC have no metallurgical bonding, but adhere due to mechanical adhesive mechanism.
  • the mechanical adhesion is mainly influenced by the kinetic energy of the particles and the hardness of the base material.
  • the HVOF layers achieve a shear strength of 250-350 MPa and for hard base materials of 55-57 HRc a lower shear strength of 50-150 MPa.
  • the proposed coating system allows a shear strength of> 250 MPa of the hard metal coating on a 55 HRc hard support layer in the base material.
  • a first, thin medium-hard layer of a Ni-based alloy is applied and remelted by laser and subsequently applied a WC-HVOF coating.
  • the metallurgically bonded layer according to the invention is a medium-hard, 40-45 HRc hard coating of a Ni-based alloy, for example of the type NiCrMo with proportions of boron, silicon and carbon.
  • the laser remelting of the former thermally applied Ni base layer results in a metallurgically bonded, dense and corrosion-resistant NiCrMo-BSiC coating.
  • the laser remelting causes hardening of the base material below the former layer of the NiCrMo-BSiC alloy.
  • a hardness zone with a hardness of 55-57 HRc at a depth of approx. 0.5-2mm is used generated.
  • the former remelted layer is thin, 5-30 ⁇ "und, and has an average hardness of 40-45 HRc.It has been shown that the high shear forces and surface pressures over the thin medium-hard, metallurgically bonded Ni-base layer, in the hardened Zone of the base material are passed without a critical plastic deformation and a depression of the hard WC coating occurs.
  • the coating according to the invention enables a hard metallic HVOF coating with a shear strength of 250 MPa, applied to the inner surface of the double cylinder and cylindrical surface of the screw, which causes a hardening of the base material by the laser remelting of the former thermally applied coating and enables a sufficient supporting effect of the coating.
  • the coating allows protection against hydrochloric acid corrosion by the laser-remelted NiCrMo-BSiC alloy, if the high mechanical stress causes cracks in the HVOF WC coating.
  • the coating according to the invention is not only corrosion-resistant, impact-resistant and crack-resistant, but also has a high elongation tolerance.
  • Applications can be complex geometry components, such as turbine blades, ball valves, screw rotors, or the inner surfaces of tubes, such as cylinders.
  • a thin coating by means of thermal spraying ie a coating with a thickness preferably between 5 and 300 ⁇ m, on the surface of a component.
  • the material of the surface is in particular an oxidation and / or corrosion resistant material.
  • Remelting of the thermally applied coating The remelting takes place preferably by means of laser technology.
  • the layer is preferably a plasma layer of oxide ceramic material or a HVOF layer of metal-bonded carbides.
  • thermal spraying plasma spraying and high-speed flame spraying are particularly suitable.
  • the thermal spray layer is remelted.
  • laser technology is also an option here.
  • the advantage of the remelted layer is the formation of an alloy in the underlying metallurgically bonded, thermally sprayed and remelted coating.
  • a further advantageous embodiment of the invention provides that the layer is a plasma layer of oxide ceramic material.
  • This layer is advantageously characterized by the fact that it has a high hardness and low thermal conductivity, so that this layer is particularly suitable for heat-insulating components.
  • a practicable variant of the invention provides that the layer of metal-bonded carbides, in particular a HVOF layer of WC-CrC-Ni is.
  • a layer is given, which has a high hardness and toughness.
  • it is electrically conductive and has a high thermal conductivity.
  • Fig. 1 is a conventional component with a metallurgical
  • Fig. 2a to 2b a component according to the invention with and without cracking.
  • Fig. 1 shows a conventional component provided with a coating 3.
  • the coating 3 is metallurgically bonded to the surface 2 of the component 1 and remelted. Previously, the coating 3 was thermally sprayed onto the surface 2 of the component 1.
  • the component shown in FIG. 1 is a screw rotor. The thickness of the coating 2 is 5 pm to 300 pm.
  • the metallurgically bonded coating 3 is, as shown in FIG. 2a further shows, provided with a thermal spray coating 4.
  • a thermal spray coating 4 In the Figs. 2a, 2b is not the complete in FIG. 1 shown component 1 shown.
  • the layer 4 whose thickness is about 30 pm, it is a layer that has been thermally sprayed onto the metallurgically bonded coating 3.
  • the layer 4 is a plasma layer of an oxide ceramic material.
  • the layer may also be an HVOF layer of WC-CrC-Ni.
  • FIG. 2 B The advantage of the layer structure of FIG. 2a is shown in FIG. 2 B. If cracking occurs due to an increased load on the component, the crack formation takes place only in the layer 4. As shown in FIG. 1b, the crack 5 extends only in the layer 4, without it having a continuation in the metallurgically bonded coating 3 place.
  • the present invention is not limited in its execution to the embodiment given above. Rather, a number of variants is conceivable, which make use of the solution shown in other types.
  • the layer 4 may also have a thickness between 5 pm and 300 pm, preferably 5 pm and 150 pm, for reasons of cost reduction particularly preferably 5 pm to 30 pm.
  • the coating 3 may be made of a hot gas oxidation resistant material such as MGAIY or a corrosion resistant material such as NiGMo.
  • a layer 4 on a hardened surface limited to the inner coating of the component 1, restricted to the geometry of double cylinders, restricted to the injection with rotating burner,
  • a powder feeder for fine particles, vibrations, balls, a bed of balls, vibration direction, a conveying channel, groove, hopper or cylinder, a conveyor disc,
  • HVOF and LaserHVOF soft and laser HVOF hard, a corrosion-resistant hard metallic HVOF layer, for example made of powder WC CrC Ni with low according to metallic binder content in the layer.
  • tungsten carbide powder for making layers and bodies, spherical, plasma sphered, of tungsten, chromium, carbon and a binder metal such as Fe, Co, Ni, WC with chromium, for example WCCrC Ni with a low metallic binder content, fine WC and fine CrC, structure WC, W2C, (WCr) 2C, Cr3C2, Cr7C3, Cr23C6 with W portions (CrW) 23C6, (WCr) 3NiC, (WCr) 4Ni2C, (WC) 6Ni6C, chromium carbide is carbon supplier. The carbon is in excess and released as graphite. This favors the suppression of embrittling n-carbides.
  • a binder metal such as Fe, Co, Ni, WC with chromium, for example WCCrC Ni with a low metallic binder content, fine WC and fine CrC, structure WC, W2C, (WCr) 2C, Cr3C2, Cr7C3,

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)
EP13709865.3A 2012-03-13 2013-03-11 Bauteil mit einer metallurgisch angebundenen beschichtung Withdrawn EP2825681A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210102087 DE102012102087A1 (de) 2012-03-13 2012-03-13 Bauteil mit einer metallurgisch angebundenen Beschichtung
PCT/EP2013/054901 WO2013135638A1 (de) 2012-03-13 2013-03-11 Bauteil mit einer metallurgisch angebundenen beschichtung

Publications (1)

Publication Number Publication Date
EP2825681A1 true EP2825681A1 (de) 2015-01-21

Family

ID=47891678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13709865.3A Withdrawn EP2825681A1 (de) 2012-03-13 2013-03-11 Bauteil mit einer metallurgisch angebundenen beschichtung

Country Status (6)

Country Link
US (1) US20150017430A1 (enrdf_load_stackoverflow)
EP (1) EP2825681A1 (enrdf_load_stackoverflow)
JP (1) JP2015518085A (enrdf_load_stackoverflow)
CA (1) CA2867192A1 (enrdf_load_stackoverflow)
DE (1) DE102012102087A1 (enrdf_load_stackoverflow)
WO (1) WO2013135638A1 (enrdf_load_stackoverflow)

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EP2871257A1 (de) * 2013-11-11 2015-05-13 Siemens Aktiengesellschaft Verfahren zum Beschichten mit anschließendem Umschmelzverfahren
US10088236B2 (en) * 2014-10-02 2018-10-02 Nippon Steel & Sumitomo Metal Corporation Hearth roll and manufacturing method therefor
CN104388887B (zh) * 2014-11-20 2017-01-04 西安交通大学 一种重载齿轮表面复合梯度涂层及其制备方法
CN108220860A (zh) * 2017-12-21 2018-06-29 中国科学院兰州化学物理研究所 一种梯度复合耐磨耐蚀涂层的制备方法
CN109266997B (zh) * 2018-10-30 2020-10-09 广东技术师范学院 一种适用于高温环境的金属工件双层涂层及其制作方法
CN109554656B (zh) * 2018-12-13 2020-10-09 西安交通大学 一种常温大气氛围下致密陶瓷涂层的制备方法和系统
DE202018107169U1 (de) * 2018-12-14 2019-01-02 Höganäs Ab Beschichtung insbesondere für Bremsscheiben, Bremstrommeln und Kupplungsscheiben, Bremsscheibe für eine Scheibenbremse oder Bremstrommel für eine Trommelbremse oder Kupplungsscheibe für eine Kupplung, Scheibenbremse oder Trommelbremse oder Kupplung und Verwendung einer Beschichtung
CN113993813A (zh) * 2019-05-13 2022-01-28 住友电气工业株式会社 碳化钨粉末
WO2023113035A1 (ja) * 2021-12-16 2023-06-22 日本ピストンリング株式会社 溶射皮膜、摺動部材及びピストンリング

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Also Published As

Publication number Publication date
JP2015518085A (ja) 2015-06-25
US20150017430A1 (en) 2015-01-15
CA2867192A1 (en) 2013-09-19
WO2013135638A1 (de) 2013-09-19
DE102012102087A1 (de) 2013-09-19

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