CN109504931A - A kind of hot-end component rare-earth ceramic heat insulating coat preparation method - Google Patents

A kind of hot-end component rare-earth ceramic heat insulating coat preparation method Download PDF

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Publication number
CN109504931A
CN109504931A CN201811525795.2A CN201811525795A CN109504931A CN 109504931 A CN109504931 A CN 109504931A CN 201811525795 A CN201811525795 A CN 201811525795A CN 109504931 A CN109504931 A CN 109504931A
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CN
China
Prior art keywords
heat insulating
rare
insulating coat
ceramic heat
earth ceramic
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Pending
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CN201811525795.2A
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Chinese (zh)
Inventor
张微
曹学强
骆家文
于志明
闫志超
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Beijing Power Machinery Institute
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Beijing Power Machinery Institute
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Priority to CN201811525795.2A priority Critical patent/CN109504931A/en
Publication of CN109504931A publication Critical patent/CN109504931A/en
Pending legal-status Critical Current

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    • 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
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C09D127/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D171/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The invention discloses a kind of hot-end component rare-earth ceramic heat insulating coat preparation methods, then this method sprays rare-earth ceramic heat insulating coat in the mode of metal surface plasma spraying first in the method for the metal surface sandblasting for needing to spray heat insulating coat by roughing in surface；Sealing of hole oxidant layer finally is coated on rare-earth ceramic heat insulating coat surface, the thickness of sealing of hole oxidant layer is 0.03mm~0.1mm.When engine starts ignition operation, sealing of hole oxidant layer can rapidly ablation it is clean, do not influence the heat insulation of rare-earth ceramic heat insulating coat.The present invention is able to solve the thermal protection problem of the engine thermal end pieces of long term storage requirement.

Description

A kind of hot-end component rare-earth ceramic heat insulating coat preparation method
Technical field
The invention belongs to thermal protection technology fields, are related to a kind of combustion chamber heat end pieces rare-earth ceramic heat insulating coat.
Background technique
With the rapid development of engine technology, engine operation Mach number is continuously improved, the operating temperature phase of combustion chamber It should improve, using application of the thermal protection method of the spraying rare-earth ceramic heat insulating coat on hot-end component on punching engine Through more and more extensive.
However, common rare earth heat-insulated coating is porous structure, rough surface, white appearance, in production, processing, fortune It is easy to be leveraged engine by the dielectric corrosions such as damp and hot, salt fog, mould, coolant liquid in external environment in defeated, storage process Storage life.
Summary of the invention
The present invention provides a kind of hot-end component rare-earth ceramic heat insulating coat preparation method, this method has been able to solve for a long time The thermal protection problem of the engine thermal end pieces of storage request.
A kind of hot-end component rare-earth ceramic heat insulating coat preparation method, the preparation step of this method are as follows:
Step 1: the metal surface sandblasting for needing to spray heat insulating coat method be roughened, the purpose of roughening be decontamination, Increase the roughness of matrix to achieve the purpose that improve anchoring strength of coating；
Step 2: in metal surface, the mode of plasma spraying sprays rare-earth ceramic heat insulating coat；
Step 3: rare-earth ceramic heat insulating coat surface coat sealing of hole oxidant layer, the thickness of sealing of hole oxidant layer be 0.03mm~ 0.1mm。
Further, in the step 1 sand grains of sandblasting granularity 0.42mm~0.85mm.
Further, rare-earth ceramic heat insulating coat thickness 0.2mm~0.6mm in the step 2.
Further, the material of rare-earth ceramic heat insulating coat is La in the step 22O3-MgO-Al2O3, La2O3Contain Amount is 65wt%-75wt%, and the content of MgO is 5wt%-10wt%, and remainder is Al2O3。
Further, the material that sealing of hole oxidant layer uses in the step 3 is carbamide paint or fluorocarbon coating；Carbamide paint Or fluorocarbon coating is organic matter, is carbonized and decomposes under high temperature, when engine starts ignition operation, sealing of hole oxidant layer being capable of rapid ablation Completely, the heat insulation of rare-earth ceramic heat insulating coat is not influenced.
Further, the proportion of the carbamide paint are as follows: ending amino polyether 55wt%-60wt%, diethyl toluene diamine 40wt%-50wt%；The proportion of the fluorocarbon coating are as follows: Corvic 70wt%-90wt%, isocyanate resin 10wt%-30wt%.
Beneficial effect
The advantages of present invention utilizes utilization rare-earth ceramic heat insulating coat lower thermal conductivities and carbamide paint or fluorocarbon coating Outstanding weatherability and leakproofness, coating polyureas or fluorocarbon coating on rare-earth ceramic heat insulating coat surface, formation good heat-insulation effect, The strong heat insulating coat of corrosion resistance.This method is suitable for disposable engine, has more in terms of engine thermal protection It is widely applied.
Detailed description of the invention
Fig. 1 is heat insulating coat structural schematic diagram of the invention.
Specific embodiment
The present invention provides a kind of hot-end component rare-earth ceramic heat insulating coat preparation method, this method is needing to spray first It is roughened on metal surface, that is, matrix of heat insulating coat with the method for sandblasting, is then sprayed in the mode of metal surface plasma spraying Apply rare-earth ceramic heat insulating coat；The spraying of sealing of hole oxidant layer, 0.2~0.5MPa of air pressure, spraying are finally carried out using air gun Distance 200mm or so, 60 °~90 ° of spray angle, load 20g/min~30g/min, on product after even application one time, Next time hole sealing agent spraying is carried out after 5min~10min to coating surface formation uniformly continuous sealing of hole oxidant layer need to be stood, works as sealing of hole When oxidant layer thickness reaches specific thickness, product is placed into drying in oven, 50 DEG C of drying temperature, time are not less than 2 hours, take Product after drying out solidifies at room temperature, and the time, the part section of coating was as shown in Figure 1 not less than for 24 hours.
Embodiment 1: the burner inner liner surface sand of granularity 0.42mm~0.85mm is roughened, then with plasma spraying In the YSZ layer of flame tube inner surface spraying 0.3mm thickness, (mass fraction 7%, remaining is ZrO to method2), it is coated on the surface YSZ The polyureas of 0.05mm thickness is as sealing of hole oxidant layer, the proportion of carbamide paint are as follows: ending amino polyether 55wt%, diethyl toluene diamine 45wt%；Wherein YSZ layers with bond strength >=40MPa of matrix, YSZ layers with bond strength >=10MPa of polyurea layer.The coating Through 48 hours salt spray tests, 10 days damp heat tests, 28 days mould tests and aqueous rustproof emulsion cutting fluid leaching in 24 hours After bubble, appearance of coat quality is intact.
Embodiment 2: the burner inner liner surface sand of granularity 0.42mm~0.85mm is roughened, then with plasma spraying In the YSZ layer of flame tube inner surface spraying 0.3mm thickness, (mass fraction 7%, remaining is ZrO to method2), it is coated on the surface YSZ The fluorine carbon of 0.05mm thickness is as sealing of hole oxidant layer, the proportion of fluorocarbon coating are as follows: Corvic 90wt%, isocyanate resin 10wt%, wherein YSZ layers with bond strength >=40MPa of matrix, YSZ layers with bond strength >=10MPa of fluorocarbon layer.The coating Through 48 hours salt spray tests, 10 days damp heat tests, 28 days mould tests and aqueous rustproof emulsion cutting fluid leaching in 24 hours After bubble, appearance of coat quality is intact.
Embodiment 3: the burner inner liner surface sand of granularity 0.42mm~0.85mm is roughened, then with plasma spraying La of the method in flame tube inner surface spraying 0.4mm thickness2O3-MgO-Al2O3Layer, La2O3Content be 65wt%-75wt%, MgO Content be 5wt%-10wt%, remainder be Al2O3.In La2O3-MgO-Al2O3The polyureas conduct of layer surface coating 0.03mm thickness Sealing of hole oxidant layer, the proportion of carbamide paint are as follows: ending amino polyether 55wt%, diethyl toluene diamine 45wt%；Wherein YSZ layers and base Bond strength >=40MPa of body, La2O3-MgO-Al2O3Bond strength >=10MPa of layer and polyurea layer.The coating was through 48 hours After salt spray test, 10 days damp heat tests, 28 days mould tests and 24 hours aqueous rustproof emulsion cutting fluids impregnate, coating Presentation quality is intact.
Embodiment 4: the burner inner liner surface sand of granularity 0.42mm~0.85mm is roughened, then with plasma spraying La of the method in flame tube inner surface spraying 0.4mm thickness2O3-MgO-Al2O3Layer, La2O3Content be 65wt%-75wt%, MgO Content be 5wt%-10wt%, remainder be Al2O3.In La2O3-MgO-Al2O3The fluorine carbon conduct of layer surface coating 0.03mm thickness Sealing of hole oxidant layer, the proportion of fluorocarbon coating are as follows: Corvic 90wt%, isocyanate resin 10wt%, wherein YSZ layers and matrix Bond strength >=40MPa, La2O3-MgO-Al2O3Bond strength >=10MPa of layer and fluorocarbon layer.The coating was through 48 hours salt After mist test, 10 days damp heat tests, 28 days mould tests and 24 hours aqueous rustproof emulsion cutting fluids impregnate, outside coating Appearance quality is intact.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention. All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (6)

1. a kind of hot-end component rare-earth ceramic heat insulating coat preparation method, which is characterized in that the preparation step of this method is as follows:
Step 1: it is roughened in the method for the metal surface sandblasting for needing to spray heat insulating coat, the purpose of roughening is decontamination, increases The roughness of matrix is to achieve the purpose that improve anchoring strength of coating；
Step 2: in metal surface, the mode of plasma spraying sprays rare-earth ceramic heat insulating coat；
Step 3: sealing of hole oxidant layer is coated on rare-earth ceramic heat insulating coat surface, the thickness of sealing of hole oxidant layer is 0.03mm~0.1mm.
2. rare-earth ceramic heat insulating coat preparation method according to claim 1, which is characterized in that sandblasting in the step 1 Sand grains granularity 0.42mm~0.85mm.
3. rare-earth ceramic heat insulating coat preparation method according to claim 1, which is characterized in that rare earth in the step 2 Ceramic heat insulating coating thickness 0.2mm~0.6mm.
4. rare-earth ceramic heat insulating coat preparation method according to claim 1, which is characterized in that rare earth in the step 2 The material of ceramic heat insulating coating is La2O3-MgO-Al2O3, La2O3Content be 65wt%-75wt%, the content of MgO is 5wt%-10wt%, remainder are Al2O3。
5. rare-earth ceramic heat insulating coat preparation method according to claim 1, which is characterized in that sealing of hole in the step 3 The material that oxidant layer uses is carbamide paint or fluorocarbon coating；Carbamide paint or fluorocarbon coating are organic matter, are carbonized and decompose under high temperature, When engine starts ignition operation, sealing of hole oxidant layer can rapidly ablation it is clean, do not influence the heat-insulated of rare-earth ceramic heat insulating coat Effect.
6. rare-earth ceramic heat insulating coat preparation method according to claim 5, which is characterized in that the carbamide paint is matched Than are as follows: ending amino polyether 55wt%-60wt%, diethyl toluene diamine 40wt%-50wt%；The proportion of the fluorocarbon coating Are as follows: Corvic 70wt%-90wt%, isocyanate resin 10wt%-30wt%.
CN201811525795.2A 2018-12-13 2018-12-13 A kind of hot-end component rare-earth ceramic heat insulating coat preparation method Pending CN109504931A (en)

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CN201811525795.2A CN109504931A (en) 2018-12-13 2018-12-13 A kind of hot-end component rare-earth ceramic heat insulating coat preparation method

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Application Number Priority Date Filing Date Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1550323A (en) * 2003-02-25 2004-12-01 联合材料公司 Coated refractory metal plate having oxide surface layer, and setter which uses the same and which is used in sintering
CN106191752A (en) * 2015-03-10 2016-12-07 中国农业机械化科学研究院 A kind of thermal barrier coating melt surface deposit protective coating and preparation method thereof
CN106835002A (en) * 2016-12-27 2017-06-13 武汉武船机电模块有限责任公司 Ship metal parts for coating rare-earth ceramic electric insulation coating layer and preparation method thereof
CN107599540A (en) * 2017-10-11 2018-01-19 桂林市晟博科技服务有限公司 A kind of insulating refractory composite metal plate
CN108690945A (en) * 2017-04-07 2018-10-23 通用电气公司 Thermal barrier system and forming method thereof with thin and compact column TBC layer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1550323A (en) * 2003-02-25 2004-12-01 联合材料公司 Coated refractory metal plate having oxide surface layer, and setter which uses the same and which is used in sintering
CN106191752A (en) * 2015-03-10 2016-12-07 中国农业机械化科学研究院 A kind of thermal barrier coating melt surface deposit protective coating and preparation method thereof
CN106835002A (en) * 2016-12-27 2017-06-13 武汉武船机电模块有限责任公司 Ship metal parts for coating rare-earth ceramic electric insulation coating layer and preparation method thereof
CN108690945A (en) * 2017-04-07 2018-10-23 通用电气公司 Thermal barrier system and forming method thereof with thin and compact column TBC layer
CN107599540A (en) * 2017-10-11 2018-01-19 桂林市晟博科技服务有限公司 A kind of insulating refractory composite metal plate

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Application publication date: 20190322