CN103009704A - Nanometer/columnar-like crystal mixing structure thermal barrier coating and preparation method thereof - Google Patents
Nanometer/columnar-like crystal mixing structure thermal barrier coating and preparation method thereof Download PDFInfo
- Publication number
- CN103009704A CN103009704A CN2011102808442A CN201110280844A CN103009704A CN 103009704 A CN103009704 A CN 103009704A CN 2011102808442 A CN2011102808442 A CN 2011102808442A CN 201110280844 A CN201110280844 A CN 201110280844A CN 103009704 A CN103009704 A CN 103009704A
- Authority
- CN
- China
- Prior art keywords
- coating
- nanometer
- preparation
- spray
- thermal barrier
- 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
Links
Images
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The invention relates to a nanometer/columnar-like crystal mixing structure thermal barrier coating and a preparation method thereof. The mixing structure thermal barrier coating is a nanometer/columnar-like crystal mixing structure coating, and comprises a substrate, a metal bonding layer and a ceramic layer, wherein the metal bonding layer and the ceramic layer are sequentially coated on the substrate, the ceramic layer comprises unmelted nanoparticles, nanometer pores, nanometer crystal and ultrafine crystal, and has cracks perpendicular to the substrate, and the cracks form the columnar-like crystal structure. The mixing structure thermal barrier coating preparation method comprises powder selection, a pretreatment step, a substrate pretreatment step, a metal bonding layer preparation step, and a 6-8% YSZ ceramic layer preparation step. The coating disclosed by the present invention has characteristics of high strain tolerance, excellent thermal insulation performance, high bonding strength, high thermal cycle life, and high thermal shock life, such that the thermal barrier coating has a good comprehensive performance.
Description
Technical field
The present invention relates to a kind of method for preparing novel mixed structure thermal barrier coating, particularly a kind of method of using conventional plasma spray coating process spraying nanocrystals YSZ powder to have the nanometer of higher strain tolerance limit, good combination property/class column crystal mixed structure thermal barrier coating with preparation.
Background technology
Thermal barrier coating (Thermal Barrier Coating, TBC) be high temperature resistant, heat insulation, the corrosion resistance that utilizes the ceramic material excellence, with the mode of coating a kind of high-temperature structural material surface protection technique that pottery is mutually compound with metallic matrix, usually form by the ceramic topcoats of lower thermal conductivity with metal bonding coating that metallic matrix, ceramic topcoats have a good coefficient of thermal expansion matching.The use of thermal barrier coating can significantly improve aero-engine high temperature hot-end component operating temperature, improves hot-end component service life, thereby improves aero-engine efficient.
Since 20 century 70s; zirconia base thermal barrier coating (Thermal Barrier Coatings; TBCs) successfully be applied to protect aeroengine combustor buring chamber and other high-temperature components; 6～8%YSZ (YSZ-yittrium oxide PSZ) material has a lot of good characteristics; large, anticorrosive etc. such as high tenacity, high strength, good thermal shock resistance, thermal coefficient of expansion, in fields such as a lot of Aeronautics and Astronautics important using value is arranged.6～8YSZ is the most classical up to now heat barrier coat material, obtains to widely apply aspect gas turbine.
The preparation technology of YSZ thermal barrier coating is modal electro beam physics vapour deposition (Electron Beam Physical Vapor Deposition, EB-PVD) and plasma spraying (Plasma Spray, PS) two kinds, wherein the thermal barrier coating of electro beam physics vapour deposition technique preparation has columnar crystal structure, this structure has improved the strain tolerance limit (thermal stress mitigation performance) of coating, make coating have higher service life, but the heat-proof quality of this structure coating is relatively poor, and the thermal conductivity of coating is usually about 1.5～2.0W/mK; The thermal barrier coating of plasma spray coating process preparation has different microstructures according to the dusty spray difference of using, usually melting fragmentation, sintering crushing, hollow powder spray-on coating are typical layer structure coating, and the agglomerated nanocrystalline powder spray-on coating is nano-structured coating.Nano-structured coating is the thermal barrier coating developing direction that recent two decades proposes, and obtained application, relative stratiform structure coating, nano-structured coating has lower thermal conductivity, and (0.7～1.1w/mK), the thermal stress that the existence that the while is nanocrystalline, part melts nano particle can improve coating to a certain extent relaxes performance.
Although above-mentioned nanostructured thermal barrier coatings has further reduced the thermal conductivity of coating, still there is larger gap in the coating service life with EB-PVD-TBC.Use in the world at present melting broken, sintering crushing or hollow powder (HOSP), in conjunction with conventional plasma spray coating process, prepared a kind of coating with class column crystal (perpendicular to the pattern cracking of matrix) structure, the relative conventional layered structure coating of this coating has lower porosity, thereby heat-proof quality slightly descends, but improved adhesion between coat layer, make coating have higher bond strength, simultaneously under the prerequisite that does not change process unit, utilize the adjustment of technological parameter, prepared the vertical crack structure (columnar crystal structure of similar EB-PVD-TBC) perpendicular to the matrix direction, the acquisition of this structure, be conducive to improve the strain tolerance limit of coating, thereby when guaranteeing that the coating heat-proof quality is better than EB-PVD-TBC, further improve the strain tolerance limit of plasma spraying coating, thereby improve the thermal cycle life of coating.
Report and the application of more micron powder spray class columnar crystal structure coating are arranged in the world, for example the patent No. is the United States Patent (USP) of " US5558992 ", the patent No. is the disclosed technology of the European patent of " EP1281788A1 ", but all use the melting of more closely knit or melt surface broken, sintering crushing, HOSP (carrying out the plasma spheroidization processing after being agglomerated into hollow powder) powder preparation coatings, although more easily obtain the vertical crack structure of class column crystal, (there is more transversal crack (interlayer is parallel to the crackle of matrix direction) simultaneously in thermal conductivity 1.2～1.6W/mK) around column crystal but the heat-proof quality of coating descends relatively.Application number is " 200910237548 ", name is called the disclosed preparation method of Chinese invention patent application of " with multielement rare earth oxide doped zirconia thermal barrier coating of craze crack structure and preparation method thereof ", using the coating transversal crack ratio of multielement rare earth oxide modified powder (being the synthetic micron powder of solid phase before reuniting) preparation is 10～50%, can cause coating to produce cracking along transversal crack in the process under arms, the advantage of class columnar crystal structure be can not take full advantage of, the dependability of coating and the further raising of service life affected; In the part class columnar crystal structure coatings applications process thickness there is certain requirement simultaneously, usually need to reaches more than the 0.5mm.
Summary of the invention
Technical problem to be solved by this invention provide a kind of substantially near the conventional coatings heat-proof quality, have higher bond strength and improve simultaneously the nanometer of thermal cycle life/class column crystal mixed structure thermal barrier coating and preparation method thereof.
To achieve these goals, the invention provides a kind of mixed structure thermal barrier coating, wherein, described mixed structure thermal barrier coating is nanometer/class column crystal mixed structure coating, comprise that matrix and order are coated in metal bonding coating and the ceramic layer on the described matrix, described ceramic layer comprises the class columnar crystal structure, and described class columnar crystal structure comprises perpendicular to the through-wall crack of described matrix and the transversal crack of parallel described matrix direction.Above-mentioned mixed structure thermal barrier coating, wherein, the neighbor distance between the described through-wall crack is 0.1～0.5mm, the ratio of the average length of described transversal crack and described nanometer/class column crystal mixed structure coating cross-wise direction length is 5～20%.
Above-mentioned mixed structure thermal barrier coating, wherein, described metal bonding coating is NiCoCrAlY and/or CoCrAlY layer.
In order to realize better above-mentioned purpose, the present invention also provides a kind of preparation method of mixed structure thermal barrier coating, wherein, comprises the steps:
A, powder are selected and pre-treatment step, select nanometer reunion dusty spray and carry out high temperature sintering or the plasma densification;
B, substrate pretreated step arrange matrix and described matrix are cleaned and blasting treatment;
C, preparation metal bonding coating step use plasma spraying or HVAF technique to prepare metal bonding coating;
D, preparation ceramic layer step prepare nanometer/class column crystal mixed structure coating with described nanometer reunion dusty spray with plasma spray coating process.
The preparation method of above-mentioned mixed structure thermal barrier coating, wherein, described metal alloy powders is MCrAlY (M represents Ni and/or Co).
The preparation method of above-mentioned mixed structure thermal barrier coating, wherein, described nanometer reunion dusty spray is nanometer reunion YSZ dusty spray, contains 6～8wt%Y
2O
3Partially stabilized ZrO
2
The preparation method of above-mentioned mixed structure thermal barrier coating, wherein, the flowability of described nanometer reunion YSZ dusty spray is less than 60s/50g, and apparent density is greater than 1.6g/cm
3
The preparation method of above-mentioned mixed structure thermal barrier coating, wherein, in the described preparation metal bonding coating step, the electric current of described plasma spraying is 500A; Voltage is 70V; The Ar throughput is 2200L/h; Spray distance is 100mm; The spray gun flutter rate is 500mm/s; Powder sending quantity is 30g/min; The metal bonding coating coating thickness is 0.05～0.15mm.The kerosene oil flow of described HVAF is 38m
3/ h; Oxygen flow is 20m
3/ h; The powder feeding gas flow is 1m
3/ h; Powder sending quantity is 60g/min; Spray distance is 330mm; The metal bonding coating coating thickness is 0.05～0.15mm.
The preparation method of above-mentioned mixed structure thermal barrier coating, wherein, in the described preparation ceramic layer step, the electric current of described plasma spraying is 550～650A; Voltage is 75～90V; Spray distance is 50～80mm; The spray gun flutter rate is 200～600mm/s; Powder sending quantity is 20～50g/min; The substrate preheating temperature is 300～600 ℃; Substrate temperature in the spraying process is controlled to be 500～800 ℃; Ceramic layer thickness is 0.05～2mm.
The preparation method of above-mentioned mixed structure thermal barrier coating, wherein, in the described preparation metal bonding coating step, the electric current of described plasma spraying is 500～650A; Voltage is 70～90V; The Ar throughput is 1800～2200L/h; Spray distance is 50～100mm; The spray gun flutter rate is 200～600mm/s; Powder sending quantity is 20～50g/min; The metal bonding coating coating thickness is 0.05～0.15mm.
The preparation method of above-mentioned mixed structure thermal barrier coating, wherein, described matrix is high temperature alloy or heat resisting steel.
Technique effect of the present invention is:
1) but the anti-sintering property of the prepared nanometer of the present invention/class columnar crystal structure coating Effective Raise nano-structured coating reduces the contraction of coating in the applied at elevated temperature environment; When keeping the good heat-proof quality of nano-structured coating, utilize the preparation of class columnar crystal structure, improve the strain tolerance limit (thermal stress mitigation performance) of coating, thereby improve the thermal cycle life of coating under the Service Environment that colds and heat succeed each other.
2) method of the present invention is for both at home and abroad widely used nanocrystals YSZ dusty spray material and normal atmospheric plasma spraying equipment, by the optimization of process control procedure and technological parameter, thus prepare have the long-life, the high-performance nano of high reliability, heat-proof quality excellence/class column crystal mixed structure thermal barrier coating.
3) nanometer that forms of the present invention/class columnar crystal structure coating, relative nano-structured coating has improved bond strength, thermal cycle, the thermal shock life of coating, has kept simultaneously the heat-proof quality of nano-structured coating excellence; Particularly for thick coating, when coating layer thickness was higher than 0.5mm, traditional structure/the nano-structured coating bond strength significantly descended, and after being prepared into the class columnar crystal structure, the bond strength of coating still can remain on more than the 40MPa.
4) the prepared plasma spraying nanometer of the present invention/class column crystal mixed structure thermal barrier coating, Related product can be used for preparing various high temperature resistance thermal barrier coatings or high temperature resistance, abrasion performance, corrosion-resistant finishes.Be applied to the hot-end components such as Aero-Space, gas turbine, automobile, machinery, chemical industry.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is nanocrystalline among the present invention/class column crystal mixed structure coating schematic diagram;
Fig. 2 is method process chart of the present invention;
Fig. 3 A, Fig. 3 B are the forming process schematic diagram of class column crystal of the present invention;
Fig. 4 A is the formation mechanism of transversal crack in the ceramic layer of the present invention;
Fig. 4 B is micron powder spray class column crystal coating Cross Section Morphology (100 μ m);
Fig. 4 C is nanometer reunion YSZ dusty spray spraying nanometer/class columnar crystal structure coating Cross Section Morphology (100 μ m);
Fig. 4 D is nanometer reunion YSZ dusty spray spraying nano-structured coating Cross Section Morphology (100 μ m);
Fig. 5 A is the Cross Section Morphology (400 μ m) of nanometer/class column crystal mixed structure coating;
Fig. 5 B is the fracture apperance (100 μ m) of nanometer/class column crystal mixed structure coating;
Shrinking law under Fig. 6 different structure coating high-temp condition;
The thermal cycle life of Fig. 7 different structure coating;
The effect of heat insulation of Fig. 8 different structure coating;
The bond strength of Fig. 9 different-thickness, structure coating;
Figure 10 nanometer/class columnar crystal structure coating thermal conductivity test result.
Wherein, Reference numeral
1 matrix
2 metal bonding coatings
3 ceramic layers
4 class columnar crystal structures
5, through-wall crack
6, transversal crack
7 nano-structured coatings
8 microns powder spray class columnar crystal structure coatings
9 nanometers/class columnar crystal structure coating
A～d step
The specific embodiment
Below in conjunction with accompanying drawing coating structure feature of the present invention and coating characteristic are done concrete description:
The present invention discloses a kind of nanometer of conventional plasma spray coating process preparation/class columnar crystal structure thermal barrier coating and preparation method thereof, under the prerequisite that adopts conventional plasma spray coating process, select 6～8wt.% nano yttrium oxide PSZ (6～8YSZ) dusty spraies, by adjusting plasma (orifice) gas composition and ratio, powder feeding rate, substrate temperature control parameter, the technological parameters such as spray power are prepared and are had the molten nano particle of certain content, nanoaperture, nanocrystalline/Ultra-fine Grained mixes, has the mixed structure coating perpendicular to matrix through-wall crack structure (class column crystal).The nanometer that obtains/class column crystal mixed structure coating have high strain tolerance limit, excellent heat-proof quality, high bond strength, high thermal cycle life and thermal shock life, make thermal barrier coating have better combination property.
Fig. 1 is mixed structure thermal insulation layer construction schematic diagram of the present invention.Mixed structure thermal barrier coating of the present invention, be nanometer/ class column crystal 3,4,5 mixed structure coatings, comprise that matrix 1 and order are coated in metal bonding coating 2 and the ceramic layer 3 on the described matrix 1, described ceramic layer 3 comprises not molten nano particle, nanoaperture, nanocrystalline and Ultra-fine Grained, and have through-wall crack 5 and transversal crack 6 perpendicular to described matrix, namely the class columnar crystal structure 4.Neighbor distance between adjacent two described through-wall cracks 5 is 0.1～0.5mm, the average length of described transversal crack 6 and described nanometer/class column crystal mixed structure coating cross-wise direction length ratio is 5～20% (use electron microscopic observation Cross Section Morphologies, in the field range of 1mm length, statistics transversal crack length sum, divided by the cross-wise direction length of 1mm, shown in Fig. 4 A～Fig. 5 B).Described ceramic layer 3 is the nano-spray powder preparation, has the existence such as nanocrystalline, molten nano particle; By process parameter control, there are (vertical cracks of class columnar crystal structure 4 both sides) in the through-wall crack 5 that coating has perpendicular to matrix 1 simultaneously, and the neighbor distance between the through-wall crack 5 is between 0.1～0.5mm; Another notable feature is that transversal crack 6 is less in use nanometer powder spraying nanometer/class column crystal mixed structure coating, and the ratio that accounts for coating cross-wise direction length is 5～20%, much smaller than the class columnar crystal structure coating of other powder preparation; This coating Thermodynamically stable, relatively traditional nano-structured coating has improved anti-sintering property, the strain tolerance limit of coating, and the thermal cycle life of coating improves more than 30%; Relative other micron powder spray class column crystal coating has reduced the ratio of transversal crack 5, has increased simultaneously nanoaperture, and the heat-proof quality of coating improves 30%, and thermal cycle life improves more than 20%; With respect to micron powder spray conventional layered structure coating, the thermal cycle life of coating is enhanced about more than once.Simultaneously, acquire a certain degree for thickness, the phenomenon of nano-structured coating bond strength decrease, preparation nanometer/class column crystal mixed structure coating can delay coating and cause bond strength (adhesion) downward trend with the thickness increase.
Described metal bonding coating 2 is preferably MCrAlY (M represents Ni and/or Co), is iCoCrAlY and/or CoCrAlY layer.Can at first use plasma spraying or HVAF technique to prepare metal bonding coating 2 in the 1 surface preparation of the alloy substrates such as high temperature alloy or heat resisting steel, then use plasma spray coating process to prepare ceramic layer 3; During preparation metal bonding coating 2, material is selected MCrAlY powder (M represents Ni and/or Co), can use respectively plasma spraying or supersonic speed oxygen-kerosene flame-spraying technique preparation, technological parameter is as shown in table 1, and prepared adhesive layer thickness scope can be 0.05～0.15mm; During preparation ceramic layer 3, select nanometer reunion YSZ powder, powder must pass through high temperature sintering or the densified contour warm processing procedure of follow-up plasma, and the apparent density of powder requires greater than 1.6g/cm
3, it is mobile that the plasma spray coating process parameter of ceramic layer 3 is as shown in table 2 less than 60s/50g, and prepared coating layer thickness is all can have class columnar crystal structure 4 in 0.05～2mm scope.
The advantage that nanometer of the present invention/class columnar crystal structure coating has is as follows:
1) has nanometer/class column crystal mixed structure coating and have good heat-proof quality and strain tolerance limit (thermal cycle life), relatively traditional layer structure or fine and close micron powder spray class column crystal (vertical crack) structure coating, have more nanoaperture and exist, have more excellent heat-proof quality; The nano-structured coating of heat-proof quality excellence by even distribution, perpendicular to the introducing of matrix 1 crackle, has improved the strain tolerance limit of coating, thereby has improved the thermal cycle life of coating relatively;
When 2) ceramic layer 3 thickness were less than 0.5mm, the thermal shock life of coating was above 5000 times; Coating with the stove thermal cycle life greater than 1500 hours; Be in 0.05～2mm scope at ceramic layer 3 thickness, the raising of certain amplitude all arranged with respect to life-span of equal thickness nanostructured, micron powder sprayed coating shape structure, class columnar crystal structure coating;
3) transversal crack 6 ratios are between 5～20% in nanometer/class columnar crystal structure coating, transversal crack 6 ratios 10～50% decreases with respect to tradition micron powder spray class columnar crystal structure coating, reduced coating by transversal crack place Crack Extension, peel off inefficacy possibility, improved the coating dependability;
4) the heat insulation temperature of coating reaches more than 150 ℃, and micron powder spray class columnar crystal structure coating heat-proof quality improves more than 30% relatively.
Referring to Fig. 2, Fig. 2 is method flow diagram of the present invention.The preparation method of mixed structure thermal barrier coating of the present invention comprises the steps:
Powder is selected and pre-treatment step a, selects nanometer reunion YSZ dusty spray and carries out high temperature sintering or the plasma densification; Preferred described nanometer reunion YSZ dusty spray contains 6～8wt%Y
2O
3Partially stabilized ZrO
2, and the flowability of described nanometer reunion YSZ dusty spray is less than 60s/50g, apparent density is greater than 1.6g/cm
3
Substrate pretreated step b arranges matrix 1 and described matrix 1 is cleaned and blasting treatment; Described matrix 1 is preferably high temperature alloy or heat resisting steel.
Preparation metal bonding coating step c prepares metal bonding coating 2 with metal alloy powders with plasma spraying or HVAF; Described metal alloy powders for example is preferably MCrAlY (M represents Ni and/or Co), NiCoCrAlY and/or CoCrAlY.The electric current of described plasma spraying is 500～650A; Voltage is 70～90V; The Ar throughput is 1800～2200L/h; Spray distance is 50～100mm; The spray gun flutter rate is 200～600mm/s; Powder sending quantity is 20～50g/min; Metal bonding coating 2 coating thickness are 0.05～0.15mm.
Preparation YSZ ceramic layer steps d prepares nanometer/class column crystal mixed structure coating with described nanometer reunion YSZ dusty spray with plasma spraying.Wherein, the electric current of described plasma spraying is 550～650A; Voltage is 75～90V; The flow of gas Ar is 1800～2200L/h, H
2Flow be 50～120L/h, N
2Flow be 400～500L/h; Spray distance is 50～80mm; The spray gun flutter rate is 200～600mm/s; Powder sending quantity is 20～50g/min; Matrix 1 preheat temperature is 300～600 ℃; Matrix 1 temperature in the spraying process is controlled to be 500～800 ℃; Ceramic layer 3 thickness are 0.05～2mm.
Table 1 metal bonding coating preparation technology parameter
Table 2 ceramic layer preparation technology parameter
Referring to Fig. 3 A and Fig. 3 B, Fig. 3 A and Fig. 3 B are the forming process schematic diagram of class column crystal of the present invention.After matrix 1 was preheated to uniform temperature, spraying one deck coating was because the stress σ of the sprayed surface direction that in the H1 layer coating solidification shrinkage process matrix 1 and coating are all produced to be parallel to matrix 1
c, behind the spraying second layer (H2), ground floor (H1) has been finished process of setting relatively, and process of setting, occurs again, thereby causes ground floor midplane stress σ after the spraying of H2 layer just at temperature-fall period in ground floor H1
cIncrease, and also have plane stress σ in the second layer
c, under the cumulative function, when coating midplane stress is higher than the intensity of coating under this temperature, coating can produce cracking, the rest may be inferred, and the Hx layer (X＜3) that arrives to a certain degree when coating midplane cumulative stress can produce cracking, and follow-up each layer of spraying also can produce continuous cracking.
The below is described in detail with the preparation method of specific embodiment to mixed structure thermal barrier coating of the present invention:
Step a: select suitable nanometer 6～8%YSZ reunion dusty spray, dusty spray is nano particle before reuniting, and composition is 6～8%Y
2O
3, surplus is ZrO
2Powder requires the apparent density of powder greater than 1.6g/cm through needing after reuniting through high temperature sintering or plasma densification
3, mobile less than 60s/50g, the nanocrystals YSZ dusty spray that will meet above requirement carries out drying and processing at low temperatures;
Step b: according to spraying test piece or workpiece, can be for high temperature alloy or heat-resisting alloy matrix 1, such as alloys such as DZ40M, DZ125, DD32, DD6, MGH754; Matrix 1 alloy is soaked 1h or carry out drying after 3～4 brush cleanings in acetone; Use sand-blasting machine and 24#～60# white fused alumina sand grains that matrix 1 is carried out blasting treatment; Use compressed air to blow residual sand grains to matrix after the sandblast 1;
Step c: preparation metal bonding coating 2, use supersonic flame or plasma spray coating process to prepare metal bonding coating 2, metal bonding coating 2 materials are MCrAlY powder (M represents Ni and/or Co); Coating layer thickness is 0.05～0.15mm, and metal bonding coating 2 preparation technology parameters are as shown in table 1.
Steps d: 6～8%YSZ nano-spray powder described in the use plasma spray coating process spraying step a, have the thermal barrier coating ceramic topcoats of nanostructured/class column crystal mixed structure by regulating the gain of parameters such as spray power, spray distance, spray gun flutter rate, substrate preheating temperature, powder sending quantity, the concrete technology parameter is as shown in table 2.
The forming process of nanometer/class columnar crystal structure coating is as follows: in nanometer/class column crystal mixed structure coating preparation process, relative conventional structure preparation technology of coating parameter, need to increase plasma spraying power, adjust simultaneously the matching of the key parameters such as powder sending quantity, substrate temperature, spray gun flutter rate, in general, usually need the higher powder sending quantity of control, slow spray gun flutter rate and certain preheat temperature, the formation of this and class columnar crystal structure 4 is directly related; In Plasma Spraying Process Using, the two layers of coatings that at first forms on matrix 1 surface is defined as H1 and H2 (Fig. 3 A), and when two-layer before the spraying, the coating material of fusing strikes after the matrix 1, can solidify rapidly, can produce the stress σ of in-plane
c(Fig. 3 B); When being sprayed into H
xWhen layer, the accumulation plane stress between the different layers can acquire a certain degree, when accumulation plane stress during greater than the intensity of coating, and H
X-1Layer can produce cracking, in the follow-up spray-on coating process, keep matrix 1 temperature in 500～800 ℃ scope, thereby guarantee that the plane stress that produces in the new sprayed coating process of setting can guarantee the continuous formation (Fig. 4 A) of vertical crack 5 in the coating, usually under the higher powder sending quantity of control, slower spray gun flutter rate and certain matrix 1 temperature conditions, the number of plies of initial generation vertical crack 5 is usually at the 2nd～3 layer, i.e. X≤3.
Referring to Fig. 4 A, Fig. 4 A is the formation mechanism of transversal crack in the mixed structure coating of the present invention.Usually in the plasma spraying YSZ coating procedure, because the contraction in an institute of the every spraying deposited coatings process of setting is subject to matrix 1 and thereby the first constraint of the coating of deposition produces tension, simultaneously owing to be subject to in-plane effect of stress σ in the class columnar crystal structure 4 coating preparation process
c(Fig. 4 A) when with the sprayed coating contraction process in during the coupling of 1 pair of coating shear stress of matrix, can cause the H that sprays
XAnd H
X-1Interlayer produces transversal crack 6 (referring to Fig. 4 A); Transversal crack 6 more (Fig. 4 B) in the closely knit hollow powder of normal operation, the sintering crushing powder spray vertical crack structure coating, and use nanocrystals YSZ powder, since the institutional framework refinement trend that obtains, the transversal crack 6 less (Fig. 4 C, Fig. 5 A) of generation.
Finally the microscopic appearance of prepared nanometer/class column crystal mixed structure coating is shown in Fig. 5 A and Fig. 5 B, there is obviously equally distributed perfoliate vertical crack 5 in Fig. 5 A, Fig. 5 B exists significantly perpendicular to the vertical crack 5 of matrix 1, tiny nanometer/ultra-fine hole, not molten nano particle, be obvious mixed structure, by cross section and fracture apperance, produce even distribution, obvious vertical crack 5, had simultaneously the molten nano particle of more micropore, ultra-fine/nanocrystal and part.Be of a size of between 0.1～0.5mm between the vertical crack 5 in nanometer/class column crystal mixed structure coating; Another notable feature is to use transversal crack 6 less (Fig. 4 C, Fig. 5 A) in nanometer powder spraying nanometer/class column crystal mixed structure coating, and average length is between 0.0175mm～0.07mm, and the ratio that accounts for coating cross-sectional length direction is 5～20%.
Result of the test shows: the nanometer of the nanocrystals YSZ powder plasma spraying/relative nano-structured coating of class column crystal mixed structure coating, has better anti-sintering property, use the high temperature thermal dilatometer at 1260 ℃ of lower insulation 10h, tested soaking zone nano-structured coating and nanometer/class column crystal mixed structure coating at the shrinking law of holding stage thickness direction, the result as shown in Figure 6, initial to end from being incubated, the shrinkage factor of nanometer/class column crystal mixed structure coating only is 1/3 of nano-structured coating, after being incubated 3h simultaneously, nanostructured YSZ coating still continues to shrink, and nanometer/class columnar crystal structure coating tendencies toward shrinkage reduces; Thermal cycle life to nano-structured coating, nanometer/class columnar crystal structure coating, micron powder spray class columnar crystal structure coating (ceramic layer thickness is 0.25mm) under 1100 ℃, 55min insulation, the strong cool condition of 5min has carried out comparative analysis (Fig. 7), the thermal cycle life of nano-structured coating 7 is 1300h, the thermal cycle life of nanometer/class columnar crystal structure coating 9 reaches 1700h, and the thermal cycle life of micron powder spray class columnar crystal structure coating 8 reaches 1400h; Thereby the relative nano-structured coating 7 of the thermal cycle life of nanometer/class columnar crystal structure coating 9 improves more than 30%, micron powder spray class columnar crystal structure coating 8 improves more than 20% relatively, at 1100 ℃, the 5min insulation, under the strong cool condition of 5min, the thermal shock life of nano-structured coating 7 is 4500 times, and the thermal shock life of micron powder spray class columnar crystal structure coating 8 is 5122 times, the thermal shock life of nanometer/class columnar crystal structure coating 9 reaches 7112 times, the high temperature service life of nanometer/class columnar crystal structure coating 9 increases substantially, because nanometer/class columnar crystal structure coating 9 relative nano-structured coatings 7 have improved the strain tolerance limit, relatively micron powder spray class columnar crystal structure coating 8 refinements the crystal grain of coating, reduced the ratio of transversal crack in the coating.
Comparative analysis the heat-proof quality of different structure coating, waiting under thick coating (ceramic layer thickness is 0.25mm) the same test condition, nano-structured coating 7 effect of heat insulation are 250 ℃, the effect of heat insulation of nanometer/class columnar crystal structure coating 9 is 245 ℃, the effect of heat insulation of micron powder spray class columnar crystal structure coating 8 is 210 ℃ (Fig. 8), nanometer/class columnar crystal structure coating 9 refinements institutional framework, nanoaperture, the not existence of molten nano particle, micron powder spray class columnar crystal structure coating 8 has improved the effect of heat insulation of coating relatively; Although use nanometer powder to spray the more fine and close nanometer of relative nano-structured coating 7/class columnar crystal structure coating 9, the effect of heat insulation of nanometer/class columnar crystal structure coating 9 is suitable with nano-structured coating 7, does not significantly reduce.
Having contrasted the ceramic layer thickness scope is the nano-structured coating 7 of 0.2mm～0.6mm (adhesive layer thickness is 0.1mm) and the bond strength (Fig. 9) of nanometer/class columnar crystal structure coating 9, relative nano-structured coating 7, when coating layer thickness reaches certain amplitude be, nanometer/class columnar crystal structure coating 9 has higher bond strength, can improve comparatively speaking coating reliability in use, when ceramic layer thickness is 0.6mm, the bond strength of nano-structured coating 7 is 20.8MPa, and the bond strength of nanometer/class column crystal mixed structure coating 9 reaches 37.6MPa, and when coating layer thickness is 0.2mm, the bond strength of nano-structured coating 7 is 38.5MPa, and the bond strength of nanometer/class column crystal mixed structure coating 9 is 47.1MPa.
Thermal conductivity to the nanometer that proposes/class column crystal mixed structure YSZ coating room temperature～1200 ℃ is tested, and in ℃ scope of coating room temperature～1200, the coating thermal conductivity changes (Figure 10) in 0.8～1.0W/mK scope.
Embodiment 1: in DZ40M high temperature alloy matrix 1 surface preparation coating
Step a: powder is selected and is prepared
Select the nanocrystals YSZ reunion powder, through the plasma densification, the particle size range of dusty spray was-90 μ m～+ 37 μ m after powder was reunited, and apparent density is 1.74g/cm
3, flowability is 52s/50g, powder is used for plasma spraying through 100 ℃ of oven dry after 2 hours.
Step b: matrix 1 preliminary treatment
Select cobalt base superalloy, the trade mark is DZ40M, and high temperature alloy matrix 1 is immersed in the middle of the acetone, and behind the 1h, taking-up is dried; Select 60# white fused alumina sand grains, blasting treatment is carried out on matrix 1 surface, use compressed air to blow off the remained on surface sand grains to matrix after the sandblast 1.
Step c: HVAF prepares metal bonding coating 2
The preparation of tack coat selects mainly to become the metal alloy powders of NiCrAlY, and the particle size range of powder is-45 μ m～+ 15 μ m, presses the preparation technology parameter of metal bonding coating 2 in the table 1, and the setting kerosene oil flow is 38m
3/ h, oxygen flow are 20m
3/ h, powder feeding gas flow are 1m
3/ h, powder sending quantity are that 60g/min, spray distance are 330mm, and tack coat 2 thickness in spray metal are 0.15mm.
Steps d: plasma spraying nanometer/class column crystal mixed structure ceramic layer 3
The nanometer reunion YSZ dusty spray of drying among the step a is used for ceramic coated surface layer, sets in the plasma spraying equipment voltage in the spraying process and be 75V, electric current and be 650A, main gas Ar flow and be 1800, inferior gas H flow is 120, spray distance is that 70mm, spray gun flutter rate are that 300mm/s, powder sending quantity are 30g/min; Use 1 to 500 ℃ of the pre-hot basal body of plasma in the spraying process, by stop swinging gap frequency or use compressed air that matrix 1 is carried out the batch (-type) cooling of spray gun in the control spraying process, control matrix 1 temperature remains at 500～800 ℃ in the spraying process; When spray-on coating thickness reached 2mm, ceramic coating 3 preparations finished, and formed class columnar crystal structure 4 in the ceramic layer 3 this moment, has simultaneously nano structure.
Equal thickness powder and micron end is sprayed being analyzed with the stove thermal cycle life of the nanometer that 2mm is thick in class columnar crystal structure 4 coatings and the case study on implementation 1/class column crystal 4 mixed structure coatings, under 1100 ℃ of furnace temperature conditions, insulation 55min, strong cold 5min, wherein micron powder spray class columnar crystal structure 4 coating thermal cycle lifes are 410h, and the thermal cycle life of nanometer/class columnar crystal structure coating is 589h, in relatively thicker coating, class columnar crystal structure 4 has clear superiority, and the thermal cycle life of nano-structured coating improves more than 40% relatively.
Embodiment 2: in MGH754Ni-Cr alloy substrate surface preparation coating
Step a: powder is selected and is prepared
Select the nanocrystals YSZ reunion powder, through the plasma densification, the particle size range of dusty spray was-61 μ m～+ 38 μ m after powder was reunited, and apparent density is 1.85g/cm
3, flowability is 47s/50g, powder is used for plasma spraying through 100 ℃ of oven dry after 2 hours.
Step b: matrix 1 preliminary treatment
Select dispersion-strengtherning NiCr heat-resisting alloy, the trade mark is MGH754, and high temperature alloy matrix 1 is immersed in the middle of the acetone, and behind the 1h, taking-up is dried; Select 24# white fused alumina sand grains, blasting treatment is carried out on matrix 1 surface, use compressed air to blow off the remained on surface sand grains to matrix after the sandblast 1.
Step c: plasma spraying prepares metal bonding coating 2
It is the metal alloy powders of NiCoCrAlY that main component is selected in the preparation of tack coat, the particle size range of powder is-75 μ m～+ 45 μ m, press the preparation technology parameter of metal bonding coating 2 in the table 1, setting the plasma spraying equipment electric current is 500A, and voltage is 70V, and argon flow amount is 2200L/h, spray distance is 100mm, powder sending quantity is 30g/min, and the spray gun flutter rate is 500mm/s, and final spray metal tack coat 2 THICKNESS CONTROL are 0.10mm.
Steps d: the ceramic layer 3 of plasma spraying nanometer/class columnar crystal structure 4
The nanometer reunion YSZ dusty spray of drying among the step a is used for ceramic coated surface layer, sets in the plasma spraying equipment voltage in the spraying process and be 75V, electric current and be 550A, main gas Ar flow and be 2200, inferior gas H flow is 80, spray distance is that 50mm, spray gun flutter rate are that 200mm/s, powder sending quantity are 20g/min; Use 1 to 600 ℃ of the pre-hot basal body of plasma in the spraying process, by stop swinging gap frequency or use compressed air that matrix 1 is carried out the batch (-type) cooling of spray gun in the control spraying process, control matrix 1 temperature remains at 500～800 ℃ in the spraying process; When spray-on coating thickness reached 0.3mm, nanometer/class column crystal 4 structure coatings preparation finished.
To being analyzed with the stove thermal cycle life of nanometer/class column crystal mixed structure coating in equal thickness nano-structured coating, micron powder spray class columnar crystal structure coating and the case study on implementation 2, under 1100 ℃ of furnace temperature conditions, insulation 55min, strong cold 5min, wherein the thermal cycle life of nano-structured coating is 1468h, micron powder spray class columnar crystal structure coating thermal cycle life is 1412h, and the thermal cycle life of nanometer/class columnar crystal structure 4 coatings is 1789h; Under 1100 ℃ of furnace temperature conditions, insulation 5min, strong cold 5min, the thermal shock life of coating is respectively: nano-structured coating is 4312 times, and micron powder spray class columnar crystal structure coating is 4891 times, and nanometer/class columnar crystal structure coating is 6745 times.Effect of heat insulation to above three kinds of coatings is analyzed, and the nano-structured coating effect of heat insulation is 285 ℃, and micron powder spray class columnar crystal structure coating effect of heat insulation is 235 ℃, and nanometer/class column crystal mixed structure coating effect of heat insulation is 272 ℃.
Embodiment 3: prepare coating at DD32 high temperature alloy matrix surface
Step a: powder is selected and is prepared
Select the nanocrystals YSZ reunion powder, through the high temperature sintering processes, the particle size range of dusty spray was-75 μ m～+ 45 μ m after powder was reunited, and apparent density is 1.77g/cm
3, flowability is 51s/50g, powder is used for plasma spraying through 100 ℃ of oven dry after 2 hours.
Step b: matrix 1 preliminary treatment
Select nickel base superalloy, the trade mark is DD32, and high temperature alloy matrix 1 is immersed in the middle of the acetone, and behind the 1h, taking-up is dried; Select 60# white fused alumina sand grains, blasting treatment is carried out on matrix 1 surface, use compressed air to blow off the remained on surface sand grains to matrix after the sandblast 1.
Step c: supersonic flame metal bonding coating 2
It is the metal alloy powders of NiCoCrAlY that main component is selected in the preparation of tack coat, and the particle size range of powder is-30 μ m～+ 10 μ m, presses the preparation technology parameter of metal bonding coating 2 in the table 1, and the setting kerosene oil flow is 38m
3/ h, oxygen flow are 20m
3/ h, powder feeding gas flow are 1m
3/ h, powder sending quantity are that 60g/min, spray distance are 330mm, and tack coat 2 thickness in spray metal are 0.15mm.
Steps d: the ceramic layer 3 of plasma spraying nanometer/class columnar crystal structure 4
The nanometer reunion YSZ dusty spray of drying among the step a is used for ceramic coated surface layer, set in the plasma spraying equipment voltage in the spraying process and be 90V, electric current and be 550A, main gas argon flow amount and be 1200, inferior gas hydrogen flowing quantity is 50, nitrogen flow is 500, spray distance is that 80mm, spray gun flutter rate are that 600mm/s, powder sending quantity are 50g/min; Use 1 to 300 ℃ of the pre-hot basal body of plasma in the spraying process, by stop swinging gap frequency or use compressed air that matrix 1 is carried out the batch (-type) cooling of spray gun in the control spraying process, control matrix 1 temperature remains at 500～800 ℃ in the spraying process; When spray-on coating thickness reached 0.4mm, nanometer/class columnar crystal structure 4 coatings preparation finished.
To being analyzed with the stove thermal cycle life of nanometer/class column crystal mixed structure coating in equal thickness nano-structured coating, micron powder spray class columnar crystal structure coating and the case study on implementation 3, under 1100 ℃ of furnace temperature conditions, insulation 55min, strong cold 5min, wherein the thermal cycle life of nano-structured coating is 1271h, micron powder spray class columnar crystal structure coating thermal cycle life is 1352h, and the thermal cycle life of nanometer/class columnar crystal structure coating is 1575h; Under 1100 ℃ of furnace temperature conditions, insulation 5min, strong cold 5min, the thermal shock life of coating is respectively: nano-structured coating is 4012 times, and micron powder spray class columnar crystal structure coating is 4251 times, and nanometer/class columnar crystal structure coating is 6053 times.Effect of heat insulation to above three kinds of coatings is analyzed, and the nano-structured coating effect of heat insulation is 355 ℃, and micron powder spray class columnar crystal structure coating effect of heat insulation is 287 ℃, and nanometer/class column crystal mixed structure coating effect of heat insulation is 341 ℃.
Embodiment 4: prepare coating at DD6 high temperature alloy matrix surface
Step a: powder is selected and is prepared
Select the nanocrystals YSZ reunion powder, through further utilizing plasma to carry out the Fast Heating quenching after the intermediate sintering temperature processing, the particle size range of dusty spray was-105 μ m～+ 11 μ m after powder was reunited, and apparent density is 2.10g/cm
3, flowability is 40s/50g, powder is used for plasma spraying through 100 ℃ of oven dry after 2 hours.
Step b: matrix 1 preliminary treatment
Select nickel base superalloy, the trade mark is DD6, and high temperature alloy matrix 1 is immersed in the middle of the acetone, and behind the 1h, taking-up is dried; Select 60# white fused alumina sand grains, blasting treatment is carried out on matrix 1 surface, use compressed air to blow off the remained on surface sand grains to matrix after the sandblast 1.
Step c: supersonic flame metal bonding coating 2
It is the metal alloy powders of NiCoCrAlY that main component is selected in the preparation of tack coat, and the particle size range of powder is-45 μ m～+ 15 μ m, presses the preparation technology parameter of metal bonding coating 2 in the table 1, and the setting kerosene oil flow is 38m
3/ h, oxygen flow are 20m
3/ h, powder feeding gas flow are 1m
3/ h, powder sending quantity are that 60g/min, spray distance are 330mm, and tack coat 2 thickness in spray metal are 0.10mm.
Steps d: the ceramic layer 3 of plasma spraying nanometer/class columnar crystal structure 4
The nanometer reunion YSZ dusty spray of drying among the step a is used for ceramic coated surface layer, set in the plasma spraying equipment voltage in the spraying process and be 90V, electric current and be 650A, main gas argon flow amount and be 1400, inferior gas hydrogen flowing quantity is 50, nitrogen flow is 400, spray distance is that 70mm, spray gun flutter rate are that 400mm/s, powder sending quantity are 35g/min; Use 1 to 400 ℃ of the pre-hot basal body of plasma in the spraying process, by stop swinging gap frequency or use compressed air that matrix 1 is carried out the batch (-type) cooling of spray gun in the control spraying process, control matrix 1 temperature remains at 500～800 ℃ in the spraying process; When spray-on coating thickness reached 0.25mm, nanometer/class columnar crystal structure coating preparation finished.
To being analyzed with the stove thermal cycle life of nanometer/class column crystal mixed structure coating in equal thickness nano-structured coating, micron powder spray class columnar crystal structure coating and the case study on implementation 3, under 1100 ℃ of furnace temperature conditions, insulation 55min, strong cold 5min, wherein the thermal cycle life of nano-structured coating is 1300h, micron powder spray class columnar crystal structure coating thermal cycle life is 1400h, and the thermal cycle life of nanometer/class columnar crystal structure coating is 1700h; Under 1100 ℃ of furnace temperature conditions, insulation 5min, strong cold 5min, the thermal shock life of coating is respectively: nano-structured coating is 4500 times, and micron powder spray class columnar crystal structure coating is 5132 times, and nanometer/class columnar crystal structure coating is 7112 times.Effect of heat insulation to above three kinds of coatings is analyzed, and the nano-structured coating effect of heat insulation is 250 ℃, and micron powder spray class columnar crystal structure coating effect of heat insulation is 210 ℃, and nanometer/class column crystal mixed structure coating effect of heat insulation is 245 ℃.
Embodiment 5: prepare coating at DZ125 high temperature alloy matrix surface
Step a: powder is selected and is prepared
Select the nanocrystals YSZ reunion powder, through further utilizing plasma to carry out the Fast Heating quenching after the intermediate sintering temperature processing, the particle size range of dusty spray was-150 μ m～+ 45 μ m after powder was reunited, and apparent density is 1.98g/cm
3, flowability is 45s/50g, powder is used for plasma spraying through 100 ℃ of oven dry after 2 hours.
Step b: matrix 1 preliminary treatment
Select nickel base superalloy, the trade mark is DZ125, and high temperature alloy matrix 1 is immersed in the middle of the acetone, and behind the 1h, taking-up is dried; Select 24# white fused alumina sand grains, blasting treatment is carried out on matrix 1 surface, use compressed air to blow off the remained on surface sand grains to matrix after the sandblast 1.
Step c: supersonic flame metal bonding coating 2
It is the metal alloy powders of NiCrAlY that main component is selected in the preparation of tack coat, and the particle size range of powder is-30 μ m～+ 10 μ m, presses the preparation technology parameter of metal bonding coating 2 in the table 1, and the setting kerosene oil flow is 38m
3/ h, oxygen flow are 20m
3/ h, powder feeding gas flow are 1m
3/ h, powder sending quantity are that 60g/min, spray distance are 330mm, and tack coat 2 thickness in spray metal are 0.12mm.
Steps d: the ceramic layer 3 of plasma spraying nanometer/class columnar crystal structure 4
The nanometer reunion YSZ dusty spray of drying among the step a is used for ceramic coated surface layer, set in the plasma spraying equipment voltage in the spraying process and be 85V, electric current and be 600A, main gas argon flow amount and be 1300, inferior gas hydrogen flowing quantity is 50, nitrogen flow is 450, spray distance is that 65mm, spray gun flutter rate are that 450mm/s, powder sending quantity are 28g/min; Use 1 to 500 ℃ of the pre-hot basal body of plasma in the spraying process, by stop swinging gap frequency or use compressed air that matrix 1 is carried out the batch (-type) cooling of spray gun in the control spraying process, control matrix 1 temperature remains at 500～800 ℃ in the spraying process; When spray-on coating thickness reached 0.05mm, nanometer/class columnar crystal structure coating preparation finished.
When coating layer thickness was 0.05mm, class columnar crystal structure 4 sizes were about 0.3～0.8mm in the coating, and namely the pattern cracking perpendicular to matrix 1 is about 1～3mm at the crack density of cross-sectional direction
-1, producing minute quantity transversal crack 6 in the coating, transversal crack 6 ratios are 5%.
Nanometer of the present invention/class column crystal mixed structure coating, use the coating of agglomerated nanocrystalline powder spraying class columnar crystal structure, when keeping nanostructured, make the pattern cracking perpendicular to matrix 1 direction that has similar columnar crystal structure in the coating, thereby when keeping the nano-structured coating characteristic, improve the strain tolerance limit of coating; Because crystal grain is more tiny in the spraying nano-structured coating, can reduce the generation of transversal crack 6, can there be simultaneously on a small quantity not molten particle, equally distributed nanoaperture in the coating, thereby further improve service life and the heat-proof quality of coating, difference according to preparation technology parameter, the thermal conductivity of nanostructured/class columnar crystal structure coating is generally between 0.8～1.3W/mK, improved the heat-proof quality of coating, the simultaneously minimizing of transversal crack 6 has further improved reliability and the service life of coating.Particularly, the relative conventional coatings heat-proof quality of this mixed structure thermal barrier coating approaches, has higher bond strength substantially, has increased substantially simultaneously thermal cycle life.
Certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. mixed structure thermal barrier coating, it is characterized in that, described mixed structure thermal barrier coating is nanometer/class column crystal mixed structure coating, comprise that matrix and order are coated in metal bonding coating and the ceramic layer on the described matrix, described ceramic layer comprises the class columnar crystal structure, and described class columnar crystal structure comprises perpendicular to the through-wall crack of described matrix and the transversal crack of parallel described matrix direction.
2. mixed structure thermal barrier coating as claimed in claim 1, it is characterized in that, neighbor distance between the described through-wall crack is 0.1～0.5mm, and the ratio of the average length of described transversal crack and described nanometer/class column crystal mixed structure coating cross-wise direction length is 5～20%.
3. mixed structure thermal barrier coating as claimed in claim 1 or 2 is characterized in that, described metal bonding coating is NiCoCrAlY and/or CoCrAlY layer.
4. the preparation method of a mixed structure thermal barrier coating is characterized in that, comprises the steps:
A, powder are selected and pre-treatment step, select nanometer reunion dusty spray and carry out high temperature sintering or the plasma densification;
B, substrate pretreated step arrange matrix and described matrix are cleaned and blasting treatment;
C, preparation metal bonding coating step prepare metal bonding coating with metal alloy powders with plasma spraying or HVAF;
D, preparation ceramic layer step prepare nanometer/class column crystal mixed structure coating with described nanometer reunion dusty spray with plasma spray coating process.
5. the preparation method of mixed structure thermal barrier coating as claimed in claim 4 is characterized in that, described nanometer reunion dusty spray is nanometer reunion YSZ dusty spray, contains 6～8wt%Y
2O
3Partially stabilized ZrO
2
6. the preparation method of mixed structure thermal barrier coating as claimed in claim 5 is characterized in that, the flowability of described nanometer reunion YSZ dusty spray is less than 60s/50g, and apparent density is greater than 1.6g/cm
3
7. such as the preparation method of claim 4,5 or 6 described mixed structure thermal barrier coatings, it is characterized in that described metal alloy powders is NiCoCrAlY and/or CoCrAlY.
8. such as the preparation method of claim 4,5 or 6 described mixed structure thermal barrier coatings, it is characterized in that in the described preparation ceramic layer step, the electric current of described plasma spraying is 500～650A; Voltage is 70～90V; Spray distance is 50～100mm; The spray gun flutter rate is 200～600mm/s; Powder sending quantity is 20～50g/min; The substrate preheating temperature is 300～600 ℃; Substrate temperature in the spraying process is controlled to be 500～800 ℃; Ceramic layer thickness is 0.05～2mm.
9. the preparation method of mixed structure thermal barrier coating as claimed in claim 8 is characterized in that, in the described preparation metal bonding coating step, the electric current of described plasma spraying is 550～650A; Voltage is 75～90V; The throughput of Ar is 1800～2200L/h; Spray distance is 50～80mm; The spray gun flutter rate is 200～600mm/s; Powder sending quantity is 20～50g/min; The metal bonding coating coating thickness is 0.05～0.15mm.
10. such as the preparation method of claim 4,5,6 or 9 described mixed structure thermal barrier coatings, it is characterized in that described matrix is high temperature alloy or heat resisting steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280844.2A CN103009704B (en) | 2011-09-21 | 2011-09-21 | A kind of nanometer/class column crystal mixed structure thermal barrier coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280844.2A CN103009704B (en) | 2011-09-21 | 2011-09-21 | A kind of nanometer/class column crystal mixed structure thermal barrier coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103009704A true CN103009704A (en) | 2013-04-03 |
| CN103009704B CN103009704B (en) | 2015-11-25 |
Family
ID=47959063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110280844.2A Active CN103009704B (en) | 2011-09-21 | 2011-09-21 | A kind of nanometer/class column crystal mixed structure thermal barrier coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103009704B (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103789713A (en) * | 2014-02-10 | 2014-05-14 | 江苏大学 | Anti-oxidation MCrAlY fine-grain protective coating material and preparation method thereof |
| CN103966540A (en) * | 2014-04-11 | 2014-08-06 | 北京航空航天大学 | Method for preparing YSZ coating through plasma evaporated deposition system |
| CN103993254A (en) * | 2014-05-07 | 2014-08-20 | 江苏大学 | Thermal barrier coating material with closed surface layer and preparation method thereof |
| CN105018886A (en) * | 2015-07-14 | 2015-11-04 | 西安航空动力股份有限公司 | Preparation method for thermal barrier coating with thermal shock resistance and erosion wear resistance |
| CN105369202A (en) * | 2015-11-20 | 2016-03-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for preparing thermal barrier coating on heavy gas turbine blade |
| CN105970145A (en) * | 2016-05-18 | 2016-09-28 | 西安交通大学 | Preparation method of YSZ thermal barrier coating of sheet micro-nano column crystal structure |
| CN106148874A (en) * | 2016-09-13 | 2016-11-23 | 中国农业机械化科学研究院 | Thermal barrier coating that a kind of anti-CMAS smelt deposits corrodes and preparation method thereof |
| CN106381471A (en) * | 2016-09-19 | 2017-02-08 | 中国科学院宁波材料技术与工程研究所 | Hardness-width-variable wear-resistant coating, and preparation method and application of wear-resistant coating |
| CN106975748A (en) * | 2017-04-18 | 2017-07-25 | 沈益明 | A kind of preparation method of Wear-resistant, high-temperature resistant nickel-base alloy turbo blade |
| CN107148493A (en) * | 2014-11-11 | 2017-09-08 | 三菱日立电力系统株式会社 | Thermal barrier coating and turbine component |
| CN107613890A (en) * | 2015-05-29 | 2018-01-19 | 奥林巴斯株式会社 | Medical Devices, coating material |
| CN108373342A (en) * | 2018-03-19 | 2018-08-07 | 广东省新材料研究所 | A kind of composite construction Environmental Barrier Coatings on Si-based Ceramics and the preparation method and application thereof, aero-engine |
| CN108729991A (en) * | 2017-04-14 | 2018-11-02 | 福特汽车公司 | The raising of ceramic coating bond strength on high temperature alloy |
| CN109536873A (en) * | 2019-01-05 | 2019-03-29 | 西安交通大学 | Anti- sand dust high temperature adhesion shells coating and preparation method thereof from layer |
| CN109706418A (en) * | 2019-02-28 | 2019-05-03 | 北京金轮坤天特种机械有限公司 | A kind of double ceramic layer structure 8YSZ thermal barrier coatings and preparation method |
| CN110129709A (en) * | 2019-06-11 | 2019-08-16 | 华东理工大学 | A kind of preparation method of ceramic layer and thus obtained ceramic layer and its thermal barrier coating |
| CN110423972A (en) * | 2019-08-21 | 2019-11-08 | 西安交通大学 | A kind of high density runs through type vertical crack thermal barrier coating and its fast preparation method |
| CN110629152A (en) * | 2019-10-09 | 2019-12-31 | 中国人民解放军第五七一九工厂 | Spraying method of thermal barrier coating with longitudinal cracks for combustion chamber |
| CN111962028A (en) * | 2020-09-03 | 2020-11-20 | 北京金轮坤天特种机械有限公司 | EB-PVD/APS composite structure double-ceramic-layer thermal barrier coating and preparation method thereof |
| CN112481577A (en) * | 2020-11-18 | 2021-03-12 | 东北大学 | Thermal shock resistant thermal barrier coating material and preparation method thereof |
| CN113087521A (en) * | 2019-12-23 | 2021-07-09 | 中国科学院上海硅酸盐研究所 | Preparation method of thermal barrier coating with controllable crystal morphology |
| CN114686794A (en) * | 2022-03-30 | 2022-07-01 | 北京科技大学 | Preparation method of nano YSZ/NiCoCrAlYTa composite coating on TiAl alloy surface |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018208815A1 (en) * | 2018-06-05 | 2019-12-05 | Höganäs Ab | Process for the production of thermal barrier coatings with vertical cracks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1281788A1 (en) * | 2001-07-31 | 2003-02-05 | General Electric Company | Sprayed ZrO2 thermal barrier coating with vertical cracks |
| CN1587062A (en) * | 2004-09-03 | 2005-03-02 | 湖北葛店开发区地大纳米材料制造有限公司 | Nano structure yttrium stabilized zirconium oxide aggregated powder and its producing method |
| CN1740372A (en) * | 2005-09-21 | 2006-03-01 | 武汉理工大学 | Liquid phase plasma spraying process of preparing nanometer zirconia thermal-barrier coating |
| CN101723667A (en) * | 2009-11-18 | 2010-06-09 | 北京航空航天大学 | Multielement rare earth oxide doped zirconia thermal barrier coating with craze crack structure and preparing method thereof |
-
2011
- 2011-09-21 CN CN201110280844.2A patent/CN103009704B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1281788A1 (en) * | 2001-07-31 | 2003-02-05 | General Electric Company | Sprayed ZrO2 thermal barrier coating with vertical cracks |
| CN1587062A (en) * | 2004-09-03 | 2005-03-02 | 湖北葛店开发区地大纳米材料制造有限公司 | Nano structure yttrium stabilized zirconium oxide aggregated powder and its producing method |
| CN1740372A (en) * | 2005-09-21 | 2006-03-01 | 武汉理工大学 | Liquid phase plasma spraying process of preparing nanometer zirconia thermal-barrier coating |
| CN101723667A (en) * | 2009-11-18 | 2010-06-09 | 北京航空航天大学 | Multielement rare earth oxide doped zirconia thermal barrier coating with craze crack structure and preparing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王文权: "等离子喷涂纳米陶瓷热障涂层组织与性能研究", 《中国博士学位论文全文数据库（电子期刊）工程科技Ⅰ辑B020-12》 * |
| 顾四行等: "《水基磨蚀》", 31 October 2008, 中国水利水电出版社 * |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103789713A (en) * | 2014-02-10 | 2014-05-14 | 江苏大学 | Anti-oxidation MCrAlY fine-grain protective coating material and preparation method thereof |
| CN103966540A (en) * | 2014-04-11 | 2014-08-06 | 北京航空航天大学 | Method for preparing YSZ coating through plasma evaporated deposition system |
| CN103993254A (en) * | 2014-05-07 | 2014-08-20 | 江苏大学 | Thermal barrier coating material with closed surface layer and preparation method thereof |
| CN107148493A (en) * | 2014-11-11 | 2017-09-08 | 三菱日立电力系统株式会社 | Thermal barrier coating and turbine component |
| CN107613890B (en) * | 2015-05-29 | 2020-07-10 | 奥林巴斯株式会社 | Medical device |
| CN107613890A (en) * | 2015-05-29 | 2018-01-19 | 奥林巴斯株式会社 | Medical Devices, coating material |
| CN105018886A (en) * | 2015-07-14 | 2015-11-04 | 西安航空动力股份有限公司 | Preparation method for thermal barrier coating with thermal shock resistance and erosion wear resistance |
| CN105018886B (en) * | 2015-07-14 | 2017-10-31 | 西安航空动力股份有限公司 | A kind of preparation method for having both thermal shock resistance and erosion wear resistance thermal barrier coating |
| CN105369202A (en) * | 2015-11-20 | 2016-03-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for preparing thermal barrier coating on heavy gas turbine blade |
| CN105970145A (en) * | 2016-05-18 | 2016-09-28 | 西安交通大学 | Preparation method of YSZ thermal barrier coating of sheet micro-nano column crystal structure |
| CN106148874A (en) * | 2016-09-13 | 2016-11-23 | 中国农业机械化科学研究院 | Thermal barrier coating that a kind of anti-CMAS smelt deposits corrodes and preparation method thereof |
| CN106381471A (en) * | 2016-09-19 | 2017-02-08 | 中国科学院宁波材料技术与工程研究所 | Hardness-width-variable wear-resistant coating, and preparation method and application of wear-resistant coating |
| CN108729991A (en) * | 2017-04-14 | 2018-11-02 | 福特汽车公司 | The raising of ceramic coating bond strength on high temperature alloy |
| CN106975748A (en) * | 2017-04-18 | 2017-07-25 | 沈益明 | A kind of preparation method of Wear-resistant, high-temperature resistant nickel-base alloy turbo blade |
| CN108373342A (en) * | 2018-03-19 | 2018-08-07 | 广东省新材料研究所 | A kind of composite construction Environmental Barrier Coatings on Si-based Ceramics and the preparation method and application thereof, aero-engine |
| CN109536873A (en) * | 2019-01-05 | 2019-03-29 | 西安交通大学 | Anti- sand dust high temperature adhesion shells coating and preparation method thereof from layer |
| CN109706418A (en) * | 2019-02-28 | 2019-05-03 | 北京金轮坤天特种机械有限公司 | A kind of double ceramic layer structure 8YSZ thermal barrier coatings and preparation method |
| CN110129709A (en) * | 2019-06-11 | 2019-08-16 | 华东理工大学 | A kind of preparation method of ceramic layer and thus obtained ceramic layer and its thermal barrier coating |
| CN110129709B (en) * | 2019-06-11 | 2021-09-10 | 华东理工大学 | Preparation method of ceramic layer, ceramic layer obtained by preparation method and thermal barrier coating of ceramic layer |
| CN110423972A (en) * | 2019-08-21 | 2019-11-08 | 西安交通大学 | A kind of high density runs through type vertical crack thermal barrier coating and its fast preparation method |
| CN110629152A (en) * | 2019-10-09 | 2019-12-31 | 中国人民解放军第五七一九工厂 | Spraying method of thermal barrier coating with longitudinal cracks for combustion chamber |
| CN113087521A (en) * | 2019-12-23 | 2021-07-09 | 中国科学院上海硅酸盐研究所 | Preparation method of thermal barrier coating with controllable crystal morphology |
| CN111962028A (en) * | 2020-09-03 | 2020-11-20 | 北京金轮坤天特种机械有限公司 | EB-PVD/APS composite structure double-ceramic-layer thermal barrier coating and preparation method thereof |
| CN112481577A (en) * | 2020-11-18 | 2021-03-12 | 东北大学 | Thermal shock resistant thermal barrier coating material and preparation method thereof |
| CN114686794A (en) * | 2022-03-30 | 2022-07-01 | 北京科技大学 | Preparation method of nano YSZ/NiCoCrAlYTa composite coating on TiAl alloy surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103009704B (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103009704B (en) | A kind of nanometer/class column crystal mixed structure thermal barrier coating and preparation method thereof | |
| CN1269993C (en) | Multi-element alloy coat | |
| CN104018156B (en) | A kind of Metal Substrate/diamond laser composite coating and preparation method thereof | |
| CN111593341B (en) | High-performance thermal barrier coating of heavy gas turbine blade and multi-process combined preparation method thereof | |
| CN110468367A (en) | Preparation method based on the IC of plasma spraying and cold spray technique equipment key components and parts surface protection coating | |
| JP7341582B2 (en) | NiCrBSi-ZrB2 cermet powder for high temperature protection, composite coating and manufacturing method thereof | |
| CN113151772A (en) | Novel high-temperature corrosion-resistant thermal barrier coating with double ceramic layer structure and preparation method thereof | |
| CN109706418A (en) | A kind of double ceramic layer structure 8YSZ thermal barrier coatings and preparation method | |
| CN113151768B (en) | Thermal barrier coating for jet engine blade and preparation method thereof | |
| CN109825827A (en) | A kind of preparation method of IC equipment plasma etch chamber protective coating | |
| CN107338433A (en) | A kind of preparation method of Mg alloy surface amorphous alloy coating | |
| CN104451672A (en) | Laser powder deposition method for regulating and controlling interface morphology of thermal barrier coating | |
| CN112553564B (en) | Method for further improving wear resistance of high-entropy alloy coating | |
| Chen et al. | Effects of processing parameters on the deposition of yttria partially stabilized zirconia coating during suspension plasma spray | |
| US9725797B2 (en) | Process for forming an improved durability thick ceramic coating | |
| CN106011721B (en) | A method of laminated coating is prepared using hot spray process | |
| CN113529065B (en) | Method and device for preparing iridium metal coating based on cold spraying high-speed deposition additive manufacturing technology | |
| CN107419213B (en) | Surface anticorrosion method for metal matrix | |
| CN111363998B (en) | Preparation method of porous metal-ceramic nano composite thermal barrier coating | |
| CN109023203B (en) | Preparation method of stable crystalline hexaaluminate thermal barrier coating | |
| CN111270191B (en) | Method for improving high-temperature creep property of titanium alloy matrix | |
| CN105296909A (en) | Galvanizing zinc corrosion resistant boride and method for preparing metal ceramic gradient coatings | |
| CN112695266A (en) | Suspension, preparation method of coating and thermal barrier coating | |
| CN114592164B (en) | DVC thermal barrier coating and preparation method and application thereof | |
| CN115287575B (en) | Method for spraying high-bonding-strength coating by supersonic flame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |