CN104988455A - Atmosphere plasma spraying preparation method for CMAS-corrosion resistant thermal barrier coating ceramic layer - Google Patents
Atmosphere plasma spraying preparation method for CMAS-corrosion resistant thermal barrier coating ceramic layer Download PDFInfo
- Publication number
- CN104988455A CN104988455A CN201510401740.0A CN201510401740A CN104988455A CN 104988455 A CN104988455 A CN 104988455A CN 201510401740 A CN201510401740 A CN 201510401740A CN 104988455 A CN104988455 A CN 104988455A
- Authority
- CN
- China
- Prior art keywords
- ceramic layer
- cmas
- plasma spraying
- ysz
- barrier coating
- 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
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses an atmosphere plasma spraying preparation method for a CMAS-corrosion resistant thermal barrier coating ceramic layer and belongs to the field of thermal barrier coating materials and preparation thereof. According to the atmosphere plasma spraying preparation method for the CMAS-corrosion resistant thermal barrier coating ceramic layer, a second ceramic layer is prepared on a YSZ ceramic layer by use of the atmosphere plasma spraying method, the second ceramic layer is poor in wettability for fusing CMAS, after the heat treatment is conducted at the temperature of 1,250 DEG C, a mutual reaction layer is formed at the interface of the second ceramic layer and the CMAS, the fusing CMAS is effectively prevented from further permeating, and the original phase stability of the YSZ ceramic layer is maintained. Accordingly, according to the atmosphere plasma spraying preparation method for the CMAS-corrosion resistant thermal barrier coating ceramic layer, the prepared second ceramic layer can prevent the fusing CMAS from further permeating, the excellent CMAS-corrosion resistant performance is achieved, and the service life of a thermal barrier coating under the CMAS coupling effect is obviously improved.
Description
Technical field
The present invention relates to thermal barrier coating preparing technical field, more specifically refer to that application air plasma spraying method prepares a kind of heat-barrier coating ceramic layer of anti-CMAS corrosion.
Background technology
Thermal barrier coating (Thermal Barrier Coatings), is called for short TBCs, is one of key science and technology of advanced aero engine hot-end component.Research finds, aero engine turbine blades thermal barrier coating, except will standing the effects such as high temperature, thermal fatigue and mechanical load, also can suffer chemical corrosion, corrode and wash away, finally cause coating failure.Wherein, by calcium oxide (CaO), magnesium oxide (MgO), aluminium sesquioxide (Al
2o
3), silicon-dioxide (SiO
2) and trace vanadium, sulphur, sodium, ferro element composition the impact of surface deposits (CMAS) on the heat-proof quality of TBCs and service life very large.
Current most widely used heat-barrier coating ceramic layer material is partially stabilized zirconium white (YSZ, the ZrO of yttrium oxide
2+ (6 ~ 8wt%) Y
2o
3), but at 1250 DEG C and higher temperature, significant destruction is there is in CMAS to YSZ ceramic layer, be mainly manifested in: melting CMAS penetrates into coat inside by the space of YSZ surface ceramii layer and crackle, shock compaction YSZ ceramic layer, and produce larger internal stress, cause the layering of YSZ ceramic layer, peel off; YSZ ceramic layer is melted in vitreous state CMAS gradually, causes stablizer yttrium oxide (Y
2o
3) loss, zirconium white (ZrO
2) there is crystal conversion, reduce coating strain Damage tolerance limit; In CMAS, the internal diffusion of Si, Ca exacerbates YSZ ceramic layer sintering, considerably reduces porosity, and the heat-insulating capability of TBCs sharply declines.
The main method preparing anti-CMAS protective coating has: magnetron sputtering, EB-PVD, APS, electrophoretic deposition, CVD, coating powder, solution infiltration and melting salt coating postheat treatment etc.(see reference document 1:Aygun A such as Aygun A. etc., Vasiliev AlL, Padture N P, Ma X Q.Acta Material 2007,55:6734 – 45.) research discovery, use SPPS method in YSZ, add the aluminium sesquioxide (Al of (molar percentage) 20%
2o
3) and the titanium dioxide (TiO of (molar percentage) 5%
2) form YSZ+Al+Ti layer, as modification YSZ ceramic layer, TiO
2for the nucleating agent of melting CMAS, Al
2o
3promote that crystallization occurs melting CMAS, thus make melting CMAS in the crystallization of modification YSZ surface ceramii layer, prevent the infiltration of CMAS when not affecting TBCs and using, but YSZ is easily undergoing phase transition and zirconic sintering phenomenon higher than 1200 DEG C, makes it apply and is restricted.Mohan P. etc. adopt electrophoretic method at YSZ surface ceramii layer deposition of aluminium oxide, sinter again, obtain fine and close protective layer, and then (see reference document 2:Mohan P to stop the infiltration of melting CMAS, Yao B, Patterson T, Sohn Y H.Surface & Coatings Technology 2009,204:797 – 801).Alumina layer does not mate with YSZ ceramic layer thermal expansivity, makes the life-span of TBCs coating in thermal cycle experiment lower, limits the application of this method.
Summary of the invention
The object of this invention is to provide a kind of preparation method of heat-barrier coating ceramic layer of anti-CMAS corrosion, more specifically refer to that application air plasma spraying (APS) method prepares one deck second ceramic layer on YSZ ceramic layer.Described second ceramic layer is lamellar, compact structure, and thermal conductivity is low, high-temperature-phase good stability.Second ceramic layer of surface-coated CMAS is after 1250 DEG C of thermal treatment 30h, one deck mutual reactance layer is formed at the interface of CMAS layer and the second ceramic layer, the main component of mutual reactance layer is the silicate oxyapatite phase of a kind of high-melting-point of La and Ca, Si formation, the short texture of high-compactness, mutual reactance layer prevents the infiltration of melting CMAS effectively, namely effectively prevents Ca, Si element to the further infringement of thermal barrier coating.
The air plasma spraying preparation method of the heat-barrier coating ceramic layer of a kind of anti-CMAS corrosion of the present invention, includes the following step:
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Second step: the preparation of air plasma spraying powder;
The particle diameter that the present invention prepares the second ceramic layer powder used is 30 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Processing parameter is: spray power is 20 ~ 40KW, and spray distance is 100 ~ 150mm, and powder feed rate is 8 ~ 12g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 100 ~ 250 μm, more preferably 120 ~ 170 μm.
The invention has the advantages that:
1, according to XRD, SEM and EDS analysis to prepared ceramic layer performance, adjustment spraying parameter and material chemical composition ratio, be met the single-phase LaPO of stoichiometric ratio
4ceramic layer.
2, preparation method's simple possible, is easy to control.
3, the wettability of heat-barrier coating ceramic layer to melting CMAS that the anti-CMAS that prepared by the present invention corrodes is poor, after 1250 DEG C of thermal treatment 30h, one deck mutual reactance layer is formed at CMAS layer and the second ceramic layer interface, effectively prevent the further infiltration of CMAS, YSZ ceramic layer maintains original phase stability, and the second ceramic layer has good anti-CMAS corrosive nature.
Accompanying drawing explanation
Fig. 1 is the shape appearance figure of the optimization pelletizing that air plasma spraying legal system uses for the second ceramic layer;
Fig. 2 is that air plasma spraying legal system is for LaPO
4the XRD material phase analysis figure of ceramic layer;
Fig. 3 is the standby LaPO of air plasma spraying legal system
4the Cross Section Morphology figure of ceramic layer;
Fig. 4 is the standby LaPO of air plasma spraying legal system
4the Cross Section Morphology figure of surface ceramii layer coating CMAS powder after 1250 DEG C of thermal treatment 30h;
Fig. 5 is the standby LaPO of air plasma spraying legal system
4the graphic representation of ceramic layer CMAS depth of penetration after different time thermal treatment.
Embodiment:
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The invention provides a kind of air plasma spraying preparation method of heat-barrier coating ceramic layer of anti-CMAS corrosion, described preparation method comprises the steps:
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
The present invention prepares the second ceramic layer powder used and adopts drying process with atomizing preparation, and the particle diameter of powder is 30 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment to deposit the second ceramic layer at YSZ surface ceramii layer, spray power is 20 ~ 40KW, and spray distance is 100 ~ 150mm, powder feed rate is 8 ~ 12g/min, the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the second ceramic layer deposit thickness is 100 ~ 250 μm.
CMAS powder is coated in the second surface ceramii layer and studies its anti-CMAS corrosive nature, the wettability of described second ceramic layer to melting CMAS is poor, after 1250 DEG C of thermal treatment 30h, one deck mutual reactance layer is formed at CMAS layer and the second ceramic layer interface, effectively prevent the further infiltration of CMAS, YSZ ceramic layer maintains original phase stability, and the second ceramic layer has good anti-CMAS corrosive nature.
embodiment 1:select LaP
3o
9powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Adopt LaP
3o
9powder prepares the second ceramic layer, LaP
3o
9powder adopts drying process with atomizing preparation, the LaP of preparation
3o
9morphology microstructure as shown in Figure 1, LaP
3o
9the particle diameter of powder is between 30 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaP
3o
9powder deposits the second ceramic layer, and spray power is 30KW, and spray distance is 100mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 150 μm.
Adopt the composition of EDS to obtained second ceramic layer to analyze, energy spectrum composition analysis the results are shown in Table 1, can find out that the atomic ratio of La and P in obtained second ceramic layer is 1:1.As shown in Figure 2, XRD material phase analysis result shows that the second ceramic layer is the LaPO of monoclinic phase monazite structure to XRD analysis collection of illustrative plates
4, in the present embodiment, the second ceramic layer is LaPO
4ceramic layer.Obtained LaPO
4the Cross Section Morphology of ceramic layer as shown in Figure 3, can be found out, LaPO
4ceramic layer structure is fine and close, and hole is less, is combined better with YSZ ceramic layer.
CMAS powder is coated in LaPO respectively
4ceramic layer and YSZ surface ceramii layer, the granularity of described CMAS powder is 60 μm, and the coating density of CMAS powder is 30mg/cm
2; Two groups of samples, all after 1250 DEG C respectively thermal treatment 5h, 10h, 30h and 90h, use SEM observation analysis, the LaPO of surface-coated CMAS powder
4the Cross Section Morphology figure of ceramic layer after 1250 DEG C of thermal treatment 30h is as Fig. 4, and can find out, Ca, Si element is from LaPO
4surface ceramii layer is to LaPO
4ceramic layer inside is infiltrated, and Ca, Si and La react and generate silicate oxyapatite phase, and the formation of a large amount of silicate oxyapatite phase causes at LaPO
4ceramic layer and CMAS bed interface place form one deck mutual reactance layer, effectively prevent Ca, Si to the further infiltration of YSZ ceramic layer.At 1250 DEG C, the thickness of mutual reactance layer and the relation of heat treatment time are as shown in Figure 5, during thermal treatment 30h, mutual reactance layer thickness reaches 35 μm, after this along with obvious increase no longer occurs the prolongation mutual reactance layer thickness of heat treatment time, illustrate under CMAS effect, have the further infiltration that certain thickness mutual reactance layer has prevented CMAS after 1250 DEG C of heat treatment times reach 30h, YSZ ceramic layer maintains original phase stability, selects LaP
3o
9single-phase LaPO prepared by powder
4ceramic layer has good anti-CMAS erosion performance.
control group 1:select LaPO
4powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaPO
4powder, LaPO
4the particle diameter of powder is 40 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaPO
4powder deposits the second ceramic layer, and spray power is 30KW, and spray distance is 100mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 150 μm.
Second ceramic layer structure is fine and close, but the second ceramic layer composition profiles is uneven, there is melting zone and non-melting zone, due to LaPO
4different with the vapour pressure of phosphoric acid, there is component segregation in the second ceramic layer melting zone, EDS analytical results shows, the atomic ratio of melting zone La and P is 3:1, and non-melting zone La and P atomic ratio are 1:1.
control group 2:select LaP
5o
14powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaP
5o
14powder, LaP
5o
14the particle diameter of powder is 40 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaP
5o
14powder deposits the second ceramic layer, and spray power is 30KW, and spray distance is 100mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 150 μm.
Adopt EDS to analyze the composition of the second ceramic layer, the atomic ratio of analytical results display La and P is 1:1.5, departs from LaPO
4stoichiometric ratio; Adopt the surface topography of SEM to obtained second ceramic layer to analyze, the second surface ceramii layer hole is more, and structure is not fine and close, and it is poor to be combined with YSZ ceramic layer.
Table 1 LaPO
4the power spectrum composition of ceramic layer
embodiment 2:select LaP
3o
9powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaP
3o
9powder, LaP
3o
9the particle diameter of powder is 30 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaP
3o
9powder deposits the second ceramic layer, and spray power is 35KW, and spray distance is 100mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 170 μm.
Adopt EDS to carry out composition analysis to the second ceramic layer, analytical results shows the atomic ratio of La and P in the second ceramic layer to be the second ceramic layer that 5:3, XRD material phase analysis result shows to obtain is not the LaPO of single monoclinic phase monazite structure
4, also possess other thing phases, the second ceramic layer prepared in the present embodiment is non-single-phase LaPO
4ceramic layer; Second ceramic layer structure is fine and close, and hole is less.
CMAS powder is coated in the second surface ceramii layer of preparation, the granularity of described CMAS powder is 60 μm, and the coating density of CMAS powder is 30mg/cm
2; Sample is after 1250 DEG C respectively thermal treatment 5h, 10h, 30h and 90h, with the Cross Section Morphology of SEM observation analysis sample, Ca, Si element infiltrates from the second surface ceramii layer to the second ceramic layer inside, Ca, Si and La react and generate silicate oxyapatite phase, the formation of a large amount of silicate oxyapatite phase causes and forms one deck mutual reactance layer at the second ceramic layer and CMAS bed interface place, effectively prevents Ca, Si to the further infiltration of YSZ ceramic layer.The research thickness of 1250 DEG C of mutual reactance layers and the relation of heat treatment time, during thermal treatment 30h, mutual reactance layer thickness reaches 25 μm, after this along with obvious increase no longer occurs the prolongation mutual reactance layer thickness of heat treatment time, illustrate under CMAS effect, there is after 1250 DEG C of heat treatment times reach 30h the further infiltration that certain thickness mutual reactance layer has prevented CMAS, YSZ ceramic layer maintains original phase stability, selects LaP
3o
9second ceramic layer prepared by powder has good anti-CMAS erosion performance.
control group 1:select LaPO
4powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaPO
4powder, LaPO
4the particle diameter of powder is 40 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaPO
4powder deposits the second ceramic layer, and spray power is 35KW, and spray distance is 100mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 170 μm.
Second ceramic layer structure is fine and close, but composition profiles is uneven, there is melting zone and non-melting zone, due to LaPO
4different with the vapour pressure of phosphoric acid, there is component segregation in the melting zone of the second ceramic layer, and EDS analytical results shows, the atomic ratio of melting zone La and P is 3:1, and non-melting zone La and P atomic ratio are 1:1.
control group 2:select LaP
5o
14powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaP
5o
14powder, LaP
5o
14the particle diameter of powder is 40 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaP
5o
14powder deposits the second ceramic layer, and spray power is 35KW, and spray distance is 100mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 170 μm.
Adopt EDS to analyze the composition of the second ceramic layer, the atomic ratio of analytical results display La and P is 1:1.5, departs from LaPO
4stoichiometric ratio; Adopt the surface topography of SEM to obtained second ceramic layer to analyze, the second surface ceramii layer hole is more, and structure is not fine and close, and it is poor to be combined with YSZ ceramic layer.
embodiment 3:select LaP
3o
9powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaP
3o
9powder, LaP
3o
9the particle diameter of powder is 30 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaP
3o
9powder deposits the second ceramic layer, and spray power is 35KW, and spray distance is 120mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 120 μm.
Adopt the composition of EDS to the second ceramic layer to analyze, analytical results shows that the atomic ratio of La and P in the second ceramic layer is that 4:3, XRD material phase analysis shows that the second ceramic layer is not the LaPO of single monoclinic phase monazite structure
4, the second obtained ceramic layer structure is fine and close, and hole is less, is combined well with YSZ ceramic layer.
CMAS powder is coated in the second surface ceramii layer of preparation, the granularity of described CMAS powder is 60 μm, and the coating density of CMAS powder is 30mg/cm
2; Sample is after 1250 DEG C respectively thermal treatment 5h, 10h, 30h and 90h, with the Cross Section Morphology of SEM observation analysis sample, Ca, Si element infiltrates from the second surface ceramii layer to the second ceramic layer inside, Ca, Si and La react and generate silicate oxyapatite phase, the formation of a large amount of silicate oxyapatite phase causes and forms one deck mutual reactance layer at the second ceramic layer and CMAS bed interface place, effectively prevents Ca, Si to the further infiltration of YSZ ceramic layer.The research thickness of 1250 DEG C of mutual reactance layers and the relation of heat treatment time, during thermal treatment 30h, mutual reactance layer thickness reaches 30 μm, after this along with obvious increase no longer occurs the prolongation mutual reactance layer thickness of heat treatment time, illustrate under CMAS effect, there is after 1250 DEG C of heat treatment times reach 30h the further infiltration that certain thickness mutual reactance layer has prevented CMAS, YSZ ceramic layer maintains original phase stability, selects LaP
3o
9second ceramic layer prepared by powder has good anti-CMAS erosion performance.
control group 1:select LaPO
4powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaPO
4powder, LaPO
4the particle diameter of powder is 40 ~ 50 μm.
3rd step: air plasma spraying legal system is for LaPO
4ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaPO
4powder deposits the second ceramic layer, and spray power is 35KW, and spray distance is 120mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 120 μm.
Second ceramic layer structure is fine and close, but composition profiles is uneven, there is melting zone and non-melting zone, due to LaPO
4different with the vapour pressure of phosphoric acid, there is component segregation in the second ceramic layer melting zone, EDS analytical results shows, the atomic ratio of melting zone La and P is 3:1, and non-melting zone La and P atomic ratio are 1:1.
control group 2:select LaP
5o
14powder prepares the second ceramic layer;
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into the thin slice of 15mm × 20mm × 2mm, is polished successively by the matrix sample of well cutting with the SiC silicon carbide paper of 400#, 600#, 800#, and sandblast pretreatment is to increase Substrate Surface Roughness (Ra < 2); By the matrix sample of sandblast pretreatment successively with acetone and EtOH Sonicate ripple cleaning 10min, dry, for subsequent use.
Use Metco 7M plasma spraying equipment at the Al of sandblast pretreatment
2o
3ySZ ceramic layer prepared by matrix sample, spray power is 30KW, and spray distance is 150mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is the deposit thickness of 30slpm, YSZ ceramic layer is 100 μm.
Second step: the preparation of air plasma spraying powder;
Drying process with atomizing is adopted to prepare LaP
5o
14powder, LaP
5o
14the particle diameter of powder is 40 ~ 50 μm.
3rd step: air plasma spraying legal system is for the second ceramic layer;
Adopt Metco 7M plasma spraying equipment at YSZ surface ceramii layer spraying LaP
5o
14powder deposits the second ceramic layer, and spray power is 35KW, and spray distance is 120mm, and powder feed rate is 10g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 120 μm.
Adopt EDS to analyze the composition of the second ceramic layer, the atomic ratio of analytical results display La and P is 1:1.5, departs from LaPO
4stoichiometric ratio; Adopt the surface topography of SEM to obtained second ceramic layer to analyze, the second surface ceramii layer hole is more, and structure is not fine and close, and it is poor to be combined with YSZ ceramic layer.
Claims (6)
1. an air plasma spraying preparation method for the heat-barrier coating ceramic layer of anti-CMAS corrosion, is characterized in that: described preparation method comprises the following steps,
The first step: substrate pretreated, and matrix after the pre-treatment prepares the first ceramic layer---YSZ ceramic layer;
Adopt the method for Linear cut by Al
2o
3matrix cuts into thin slice, by the pre-treatment of the matrix sample polishing of well cutting, sandblasting, ultrasonic cleaning and oven dry; Al after the pre-treatment
2o
3first ceramic layer prepared by matrix sample---YSZ ceramic layer, the deposit thickness of YSZ ceramic layer is 100 μm;
Second step: the preparation of air plasma spraying powder; Described air plasma spraying powder is LaP
3o
9powder, the particle diameter of powder is 30 ~ 50 μm;
3rd step: air plasma spraying legal system is for the second ceramic layer;
Deposit the second ceramic layer at YSZ surface ceramii layer, processing parameter is: spray power is 20 ~ 40KW, and spray distance is 100 ~ 150mm, and powder feed rate is 8 ~ 12g/min, and the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm; The thickness of the second ceramic layer is 100 ~ 250 μm.
2. the air plasma spraying preparation method of the heat-barrier coating ceramic layer of a kind of anti-CMAS corrosion according to claim 1, it is characterized in that: the processing parameter of described air plasma spraying method is: spray power 30KW, spray distance is 100mm, powder feed rate is 10g/min, the speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 150 μm.
3. the air plasma spraying preparation method of the heat-barrier coating ceramic layer of a kind of anti-CMAS corrosion according to claim 1, it is characterized in that: the processing parameter of described air plasma spraying method is: spray power is 35KW, spray distance is 100mm, powder feed rate is 10g/min, the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 170 μm.
4. the air plasma spraying preparation method of the heat-barrier coating ceramic layer of a kind of anti-CMAS corrosion according to claim 1, it is characterized in that: the processing parameter of described air plasma spraying method is: spray power is 35KW, spray distance is 120mm, powder feed rate is 10g/min, the translational speed of horizontal plasma gun is 500 μm/s, Ar airshed is 80slpm, H
2airshed is 30slpm, and the deposit thickness of the second ceramic layer is 120 μm.
5. an application for the heat-barrier coating ceramic layer of anti-CMAS corrosion, is characterized in that: the heat-barrier coating ceramic layer of described anti-CMAS corrosion adopts any one preparation method in Claims 1 to 4 to prepare; Described heat-barrier coating ceramic layer surface-coated CMAS, after 1250 DEG C of thermal treatment, form mutual reactance layer at the second ceramic layer and CMAS interface, prevent the further infiltration of CMAS, YSZ ceramic layer maintains original phase stability.
6. a thermal barrier coating for anti-CMAS corrosion, it is characterized in that: described thermal barrier coating is included in YSZ ceramic layer and the second ceramic layer that matrix is prepared successively, the thickness of YSZ ceramic layer is 200 μm, and the thickness of the second ceramic layer is 100 ~ 250 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401740.0A CN104988455B (en) | 2015-07-09 | 2015-07-09 | A kind of air plasma spraying preparation method of the heat-barrier coating ceramic layer of anti-CMAS corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401740.0A CN104988455B (en) | 2015-07-09 | 2015-07-09 | A kind of air plasma spraying preparation method of the heat-barrier coating ceramic layer of anti-CMAS corrosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104988455A true CN104988455A (en) | 2015-10-21 |
| CN104988455B CN104988455B (en) | 2018-07-17 |
Family
ID=54300345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510401740.0A Active CN104988455B (en) | 2015-07-09 | 2015-07-09 | A kind of air plasma spraying preparation method of the heat-barrier coating ceramic layer of anti-CMAS corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104988455B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086765A (en) * | 2016-07-25 | 2016-11-09 | 北京航空航天大学 | A kind of anti-CMAS corrosion micron and nanometer composite structure thermal barrier coating and preparation method thereof |
| CN110284097A (en) * | 2019-08-13 | 2019-09-27 | 广东省新材料研究所 | Environmental Barrier Coatings on Si-based Ceramics and its coating method and application |
| JP2020523488A (en) * | 2017-06-12 | 2020-08-06 | サフラン | Coated turbomachine parts and related manufacturing method |
| WO2021019154A1 (en) * | 2019-07-26 | 2021-02-04 | Safran Aircraft Engines | Abradable coating |
| CN112941451A (en) * | 2021-01-25 | 2021-06-11 | 武汉理工大学 | Method for improving stability of thermal barrier coating in natural environment |
| CN114671686A (en) * | 2022-04-21 | 2022-06-28 | 昆明理工大学 | Preparation method of anti-permeation ceramic material capable of rapidly reacting with low-melting-point oxide |
| CN116477970A (en) * | 2023-03-05 | 2023-07-25 | 广西大学 | Preparation method of CMAS corrosion-resistant in-situ generated rare earth apatite phase compact reaction layer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6863999B1 (en) * | 2002-01-23 | 2005-03-08 | Innovative Technology Licensing, Llc | Monazite-based thermal barrier coatings |
| EP1806435A2 (en) * | 2006-01-06 | 2007-07-11 | General Electric Company | Layered thermal barrier coatings containing lanthanide series oxides for improved resistance to CMAS degradation |
| CN101612823A (en) * | 2008-05-29 | 2009-12-30 | 阿尔斯托姆科技有限公司 | Multilayer thermal barrier coating |
| CN102245810A (en) * | 2008-12-15 | 2011-11-16 | 阿尔斯通技术有限公司 | Thermal barrier coating system, components coated therewith and method for applying a thermal barrier coating system to components |
| CN102371734A (en) * | 2011-08-30 | 2012-03-14 | 华北电力大学 | Thermal barrier coating capable of resisting CMAS (calcium-magnesium-alumina-silicate) corrosion at high temperature and preparation process thereof |
| CN103874580A (en) * | 2011-10-13 | 2014-06-18 | 通用电气公司 | Thermal barrier coating systems and processes therefor |
-
2015
- 2015-07-09 CN CN201510401740.0A patent/CN104988455B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6863999B1 (en) * | 2002-01-23 | 2005-03-08 | Innovative Technology Licensing, Llc | Monazite-based thermal barrier coatings |
| EP1806435A2 (en) * | 2006-01-06 | 2007-07-11 | General Electric Company | Layered thermal barrier coatings containing lanthanide series oxides for improved resistance to CMAS degradation |
| CN101612823A (en) * | 2008-05-29 | 2009-12-30 | 阿尔斯托姆科技有限公司 | Multilayer thermal barrier coating |
| CN102245810A (en) * | 2008-12-15 | 2011-11-16 | 阿尔斯通技术有限公司 | Thermal barrier coating system, components coated therewith and method for applying a thermal barrier coating system to components |
| CN102371734A (en) * | 2011-08-30 | 2012-03-14 | 华北电力大学 | Thermal barrier coating capable of resisting CMAS (calcium-magnesium-alumina-silicate) corrosion at high temperature and preparation process thereof |
| CN103874580A (en) * | 2011-10-13 | 2014-06-18 | 通用电气公司 | Thermal barrier coating systems and processes therefor |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086765A (en) * | 2016-07-25 | 2016-11-09 | 北京航空航天大学 | A kind of anti-CMAS corrosion micron and nanometer composite structure thermal barrier coating and preparation method thereof |
| JP2020523488A (en) * | 2017-06-12 | 2020-08-06 | サフラン | Coated turbomachine parts and related manufacturing method |
| US11473432B2 (en) | 2017-06-12 | 2022-10-18 | Safran | Anti-CMAS coating with enhanced efficiency |
| JP7214720B2 (en) | 2017-06-12 | 2023-01-30 | サフラン | Coated turbomachinery components and related manufacturing methods |
| WO2021019154A1 (en) * | 2019-07-26 | 2021-02-04 | Safran Aircraft Engines | Abradable coating |
| CN114174548A (en) * | 2019-07-26 | 2022-03-11 | 赛峰飞机发动机公司 | Abradable coating |
| CN110284097A (en) * | 2019-08-13 | 2019-09-27 | 广东省新材料研究所 | Environmental Barrier Coatings on Si-based Ceramics and its coating method and application |
| CN110284097B (en) * | 2019-08-13 | 2021-04-09 | 广东省新材料研究所 | Environmental barrier coating and coating method and application thereof |
| CN112941451A (en) * | 2021-01-25 | 2021-06-11 | 武汉理工大学 | Method for improving stability of thermal barrier coating in natural environment |
| CN114671686A (en) * | 2022-04-21 | 2022-06-28 | 昆明理工大学 | Preparation method of anti-permeation ceramic material capable of rapidly reacting with low-melting-point oxide |
| CN114671686B (en) * | 2022-04-21 | 2023-09-22 | 昆明理工大学 | Preparation method of ceramic material capable of fast reacting with low-melting-point oxide and resisting permeation |
| CN116477970A (en) * | 2023-03-05 | 2023-07-25 | 广西大学 | Preparation method of CMAS corrosion-resistant in-situ generated rare earth apatite phase compact reaction layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104988455B (en) | 2018-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104988455A (en) | Atmosphere plasma spraying preparation method for CMAS-corrosion resistant thermal barrier coating ceramic layer | |
| US9951630B2 (en) | Self-healing environmental barrier coating | |
| Naga et al. | Effect of La2Zr2O7 coat on the hot corrosion of multi-layer thermal barrier coatings | |
| CA2936790C (en) | Thermal barrier coatings and processes | |
| CN105039894B (en) | A kind of anti-CMAS ceramic layer and its slurry process preparation method | |
| Kumar et al. | Influence of microstructure on the durability of gadolinium zirconate thermal barrier coatings using APS & SPPS processes | |
| CN104988454A (en) | Melted CMAS-corrosion resistant rare-earth aluminate thermal barrier coating and preparation method thereof | |
| CN108118190B (en) | A kind of environment resistant deposit corrosion thermal barrier coating and preparation method thereof | |
| Zhao et al. | Restrained TGO growth in YSZ/NiCrAlY thermal barrier coatings by modified laser remelting | |
| US20210404045A1 (en) | Method of manufacturing fiber reinforced barrier coating | |
| CN111004990B (en) | MAX phase coating for thermal barrier coating anti-melting CMAS corrosion and thermal spraying preparation method | |
| CN104674217B (en) | A kind of preparation method of the thermal barrier coating of the tack coat containing double-decker | |
| CN103160773A (en) | Method for prolonging service life of engine thermal barrier coating by controlling components of thermal growth oxide layer | |
| US20190062890A1 (en) | Cmc with outer ceramic layer | |
| CN104451672A (en) | Laser powder deposition method for regulating and controlling interface morphology of thermal barrier coating | |
| CN108004543A (en) | A kind of thermal barrier coating of anti-CMAS corrosion and preparation method thereof | |
| CN103722785B (en) | A kind of porous C/C is the preparation method of the lightweight anti-oxidation materials structure of liner | |
| CN108660407A (en) | A kind of thermal barrier coating and preparation method thereof with prefabricated microcosmic longitudinal crack structure | |
| Das et al. | Thermal cyclic behavior of glass–ceramic bonded thermal barrier coating on nimonic alloy substrate | |
| CN103552311A (en) | Protective coating of single crystal high-temperature alloy as well as preparation method thereof | |
| Latzel et al. | New environmental barrier coating system on carbon-fiber reinforced silicon carbide composites | |
| CN106831001B (en) | A kind of resistance to high temperature oxidation protective layer preparation method of carbon fibre composite | |
| Wang et al. | Comparison of hot corrosion behaviors of plasma-sprayed segmented structure and conventional YSZ thermal barrier coatings under a fused Na2SO4-V2O5 salt film | |
| Li et al. | Development of the Particle Interface Bonding in Thermal Spray Coatings for Expanding High Performance Applications | |
| Yi et al. | Thermal Insulation Property of Nanostructured Alumina Coated Zirconia Thermal Barrier Coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |