CN101768716B - Aeroengine combustor liner with surface coated with oxidation resistant coating - Google Patents
Aeroengine combustor liner with surface coated with oxidation resistant coating Download PDFInfo
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- CN101768716B CN101768716B CN2008102469070A CN200810246907A CN101768716B CN 101768716 B CN101768716 B CN 101768716B CN 2008102469070 A CN2008102469070 A CN 2008102469070A CN 200810246907 A CN200810246907 A CN 200810246907A CN 101768716 B CN101768716 B CN 101768716B
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Abstract
The invention provides an aeroengine combustor liner with surface coated with an oxidation resistant coating. The coating is specifically subjected to flame spraying by using Al2O3.NiAlW flexible wires as the surface layer materials and NiAlW flexible wires as the bottom layer materials. The Al2O3.NiAlW flexible wires are prepared by the following components in percentage by mass: 29-34% of Ni, 9-14% of Al, 0.9-2.5% of Cr, not more than 1.0% of W, 0.1-0.6% of Mo, 0.1-0.5% of Ti, 0.1-0.6% of Co, 38-54% of ruby and the balance of forming agents. The NiAlW flexible wires are prepared by the following components in percentage by mass: 61.0-67.0% of Ni, 18.0-22.5% of Al, 2.0-4.0% of Cr, not more than 2.0% of W, 0.2-1.2% of Mo, 0.2-1.0% of Ti, 0.2-1.2% of Co and the balance of forming agents. The spraying technology of the coating is simple and feasible and high in production efficiency and can be widely applied to preparation of the oxidation resistant coatings on the surfaces of various parts, with the long-time operating temperature being not higher than 850 DEG C, of various types of engines.
Description
Technical field
The present invention relates to utilize hot-spraying techniques, the surface-coated that provides a kind of use to utilize the novel flexible wire rod to prepare especially has the aeroengine combustor liner of oxidation resistant coating.
Background technology
In the prior art, the technique effect of antioxidant coating of combustion liner of aeroengine has much room for improvement, and we require to prepare the high temperature corrosion and heat resistant coating of better effects if, is under the condition of 850 ℃ of long-term average working temperatures at working condition especially.
Summary of the invention
The purpose of this invention is to provide the better surface-coated of a kind of technique effect has the aeroengine combustor liner of oxidation resistant coating.
The invention provides a kind of surface-coated has the aeroengine combustor liner of oxidation resistant coating, and described aeroengine combustor liner surface-coated has oxidation resistant coating, it is characterized in that: described coating is specifically used Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material; Described NiAlW flexible wire uses as primer, described Al
2O
3The NiAlW flexible wire is as surface material; Wherein:
Described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following the requirement: Ni:29～34%, Al:9～14%, Cr:0.9～2.5%, W≤1.0%, Mo:0.1～0.6%, Ti:0.1～0.5%, Co:0.1～0.6%, ruby: 38～54%, forming agent: surplus;
The composition of described NiAlW flexible wire and mass percentage content satisfy following requirement: Ni:61.0～67.0%, Al:18.0～22.5%, Cr:2.0～4.0%, W≤2.0%, Mo:0.2～1.2%, Ti:0.2～1.0%, Co:0.2～1.2%, forming agent: surplus.
Described Al
2O
3The composition of NiAlW flexible wire and mass percentage content preferably satisfy following the requirement: Ni:30～31%, Al:12.5～13%, Cr:1.4～1.9%, W:0.15～0.5%, Mo:0.2～0.45%, Ti:0.12～0.45%, Co:0.2～0.4%, ruby: 42～48, forming agent: surplus;
The composition of described NiAlW flexible wire and content satisfy following requirement: Ni:62.0～64.0%, Al:19.50～21.5%, Cr:2.2～2.8%, W 0.5～1.2%, Mo:0.45～0.95%, Ti:0.25～0.6%, Co:0.4～0.9%, forming agent: surplus
Described forming agent is specifically as follows silicon rubber.
In the external surface coating preparation process of aeroengine combustor liner of the present invention, Al wherein
2O
3The NiAlW flexible wire is a kind of composite type antioxidant coated material as surface material, Al
2O
3Press diffusing forming with the agent of NiAlW powder add-on type; The NiAIW flexible wire is as primer, and is higher with the bonding force of matrix.Oxygen is pinched in flame plating and acetylene feeds in the wire flame spray gun nozzle, after heat fused, forms the high velocity air of taper, the material of fusing is broken away from from wire ends, and be atomized into trickle particle, under the promotion of flame and air-flow, form coating at piece surface.What this processing method prepared coating can be widely used in the preparation that the long-term working temperature of various engine is not more than 850 ℃ all kinds of piece surface oxidation resistant coating.
In the method for preparing antioxidant coating of aeroengine combustor liner of the present invention, described NiAlW alloy flexible wire uses as primer, and the thickness of coating is 0.05mm～0.1mm; Described Al
2O
3The NiAlW flexible wire is as surface material, and the thickness of coating is about 0.1mm～0.2mm;
The spraying parameter of coating preparation is as follows: wire feed control voltage: 9～12V, rotating disk control voltage 220V～245V; Spray distance: 80～100mm, oxygen pressure: 0.4～0.6MPa, acetylene pressure: 0.05～0.1MPa, atomization air pressure: 0.2～0.3MPa, crooked air pressure: 0.45～0.7Mpa.
Using Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out as raw material in the process of flame plating, and the silk feeding quantity of two kinds of flexible wires is 4～12g/min.Preferred content is: employed Al
2O
3The silk feeding quantity of NiAlW flexible wire and these two kinds of flexible wires of NiAlW flexible wire requires to be respectively: Al
2O
3NiAlW flexible wire 5～8g/min, NiAlW flexible wire 6～11g/min.
Employed Al
2O
3The sedimentation rate of NiAlW flexible wire and NiAlW flexible wire also satisfies following requirement the: Al respectively
2O
3NiAlW flexible wire sedimentation rate 4.1～4.5g/min, the sedimentation rate 4.3～4.7g/min of NiAlW flexible wire; Silk feeding quantity satisfies following requirement: Al
2O
3NiAlW flexible wire 5.4～6.7g/min, NiAlW flexible wire 6.5～7.5g/min.
Employed Al
2O
3The specification requirement diameter of NiAlW flexible wire and NiAlW flexible wire is 4.0mm～4.3mm; The sedimentation effect of two kinds of wire rods requires to be respectively: Al
2O
3NiAlW flexible wire 65～80%, NiAlW flexible wire 40～60%.
Surface material Al used in the present invention
2O
3NiAlW flexible wire and primer NiAIW flexible wire are spray material and be pressed into a kind of " soft " who is similar to the rubber strip after rubber adhesive mixes, and wherein primer is the NiAlW alloy powder, and surface material is NiAiW alloy powder and Al
2O
3The mixture of fine powder, two kinds of materials are all with soft spraying equipment spraying of special flame.This spraying method has been avoided the big shortcoming of the dust of conventional powder spraying.And during conventional powder spraying, be to guarantee the powder feeding accessibility, must be with oarse-grained ruby powder, this just must use this high-octane spraying method of plasma spraying just can make it to melt.And after adopting soft, the granularity of ruby powder is thin (below 5 microns) very, and owing to mix with the NiAlW alloy powder in advance, promptly guaranteed the homogeneity of composition, make again and only just can prepare qualified coating that its feature is to develop the ability of simple device to greatest extent with flame plating.
The present invention specifically adopts flame plating technology to carry out coating preparation, and processing parameters such as strict control powder feeding gas pressure, flow, powder feeding rate and spray distance make coating performance satisfy the part service requirements.
Flame web spraying equipment used in the present invention can be conventional flame sprayer,
According to the given processing parameter of spraying coating process specification sheets, respectively to the Al among soft and the present invention of the prior art
2O
3Soft the NiAlW flexible wire with among the present invention carries out spraying coating process applied research and coating performance simultaneous test in NiAlW flexible wire, the prior art.
Project according to conventional flame plating and the examination of oxidation resistant coating needs compares test, physical and chemical index as material, technology such as wire feed rate, sedimentation effect suitability during spraying, the phase composite of coating structure, microhardness, heat-shock resistance, bonding strength, bending property, coating oxidation-resistance, coating, the hot salt corrosion resistance energy of coating, the coefficient of expansion of coating, coating consist of: the prior art bottom; Prior art material bottom+prior art material surface layer; Bottom of the present invention; Bottom of the present invention+surface layer of the present invention.
1) flexible wire (soft strip material) Performance Evaluation:
We have carried out visual inspection to the present invention, prior art material respectively according to the requirement of conventional coated material, and the measurement of diameter etc., and chemical composition analysis the results are shown in Table 1.
The soft strip material physicochemical property of table 1
Annotate: the * gravimetric determination.The result shows: the physical and chemical index of two kinds of materials of the present invention is all suitable with the prior art material.
Two kinds of flexible wire spraying coating process suitabilities: investigate the present invention and wire feed speed and the silk feeding quantity of prior art two class materials under different wire feed voltages, see Table 2.The sedimentation rate and the sedimentation effect of material see Table 3.Investigate import and material of the present invention in of the influence of different spray angles, see Fig. 1,2 coating quality.
Soft wire feed situation of table 2
The sedimentation rate of table 3 material and sedimentation effect (voltage=9.5v)
| Material | Wire feed speed (mm/min) | Silk feeding quantity (g/min) | Sedimentation rate (g/min) | Sedimentation effect (%) |
| Soft of prior art | 135 | ?6.72 | 3.0 | 44.6 |
| The NiAlW flexible wire | 130 | ?7.31 | 4.5 | 51.2 |
| Soft of prior art | 148 | ?5.68 | 4.3 | 75.7 |
| Al
2O
3The NiAlW |
150 | ?6.40 | 4.3 | 67.2 |
Two kinds of materials of the present invention can guarantee even wire feed under the processing condition of regulation and stipulation.NiAlW flexible wire wire feed speed is suitable with the prior art material, and silk feeding quantity is slightly larger than the prior art material; Sedimentation rate and sedimentation effect also are higher than current material.Al
2O
3The NiAlW flexible wire a little more than current material, but is more or less the same on wire feed speed and silk feeding quantity.Sedimentation rate and current material are suitable, and sedimentation effect is a little less than current material.
The result shows: the processing parameter during the current material spraying is applicable to two kinds of production domesticization materials, and manufacturabilities such as production domesticization material wire feed rate, sedimentation effect are all suitable with current material.It is suitable substantially that the different spray angles of domestic and imported material prepare coating structure.
3) coating performance comparative analysis: appearance of coat and chemical composition analysis: two kinds of homemade coatings from appearance with existing coating basically identical, the color of surface layer of the present invention is darker slightly than material surface layer of the prior art, this may be slightly high more relevant than existing material with aluminum oxide in the starting material, also may be carefully more relevant than existing material with aluminum oxide grain size in the starting material.
Table 4 coating chemical ingredients (%)
| Material | Ni | Al | Cr | W | Mo | Ti | Co | Total amount | Surplus |
| Existing bottom | 64.13 | 12.83 | 2.58 | 1.45 | 0.48 | 0.31 | 0.96 | 82.74 | 17.26 |
| Bottom of the present invention | 67.19 | 11.87 | 2.48 | 1.46 | 0.81 | 0.39 | 0.80 | 85.00 | 15.00 |
| Existing surface layer | 27.80 | 5.84 | 2.48 | 0.61 | 0.46 | 0.13 | 0.30 | 37.62 | 62.38 |
| Surface layer of the present invention | 29.85 | 4.84 | 2.38 | 0.69 | 0.37 | 0.19 | 0.35 | 38.67 | 61.33 |
Measure chemical ingredients in the coating with the ICP method, seen Table 4.Coating of the present invention is compared with existing coating except that nickel content omits height, and all the other are approaching substantially." surplus " is meant undissolved substances content, i.e. oxide compound in the coating in the table.The content of aluminium 19% reducing to about 12% in the coating from the bottom starting material reduced to about 5% from about 12% of surface layer, illustrates that oxidative phenomena can take place aluminium in the spraying process.
Be coated with layer microstructure and microhardness: the metallograph of coating and microhardness value are seen Fig. 1,2 and table 5 respectively.
Table 5 microhardness (HV
200) test result
| ? | 1# | 2# | 3# | Mean value |
| Existing bottom | 305 | 353 | 388 | 349 |
| Bottom of the present invention | 360 | 315 | 360 | 345 |
| Existing surface layer | 339 | 388 | 441 | 389 |
| Surface layer of the present invention | 321 | 470 | 412 | 401 |
From metallograph, coating of the present invention and existing coating are that bottom or surface layer are all as broad as long, and microhardness is also approaching substantially.
Thermal shock performance: under specified temperature, insulation 10min drops in 25 ℃ of cold water, repeatedly for several times, investigates the thermal shock resistance of coating.The results are shown in Table 6.
Table 6 thermal shock result
Bonding strength: test-results sees Table 7.
Table 7 bonding strength test result
From test-results, the coating bottom bonding strength of coating bottom of the present invention and prior art is basic near satisfying service requirements.
Pliability test: angle of bend: 75 °; Test-results: material coating flawless of the present invention, the prior art material coating has slight crackle, sees Fig. 3.
The coating high-temp antioxidant property: 850 ℃ of anti-oxidant curves are seen Fig. 5; Weightening finish is little down at 850 ℃ for two kinds of coatings, and coating of the present invention slightly is better than the prior art coating.
The coating Phase Structure Analysis: the phase composite with the X-diffractometer has compared two kinds of coatings of the present invention and prior art coating the results are shown in Figure 6,7,8,9.As can be seen, the present invention and the phase composite of prior art coating are in full accord, and just β-NiAl and pure Ni peak are more lower slightly in the surface layer, this with starting material in nickel content higher relatively relevant.All contain a small amount of γ-Al in the bottom
2O
3, illustrating that material in the flame spraying process all has oxidation to a certain degree, this is consistent with chemical analysis results.
Combustion gas thermal etching test: test-results sees Table 8.Test-results shows: slightly be better than with current material with the material preparation coating hot corrosion resistance of anti-combustion gas of the present invention and prepare coating.
Table 8 combustion gas thermal etching test test-results
Coefficient of expansion test: test result sees Table 9, and the result shows: suitable with the prior art material preparation coating coefficient of expansion with the material preparation coating coefficient of expansion of the present invention.
Table 9 coefficient of expansion test result
The present invention has adopted flame plating successfully to prepare Al on certain overhaul machine burner inner liner
2O
3NiAlW flexible wire and NiAlW flexible wire coating, and by certain repairing machine endurance test examination.This processing method prepares coating spraying technology simple possible, and the production efficiency height can be widely used in the preparation that the long-term working temperature of various engine is not more than 850 ℃ all kinds of piece surface oxidation resistant coating.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and the embodiments:
Fig. 1 is the coating metallograph of 200 times of prior art coating magnifications;
Fig. 2 is the coating metallograph of 200 times of coating magnifications of the present invention;
Fig. 3 is the bonding strength sample section;
Fig. 4 is crooked test piece outside drawing, and wherein the 1-3 on the left side is the test specimen of material coating of the present invention, and the 4-6 on the right is the test specimen of prior art material coating;
Fig. 5 is 850 ℃ of oxidation weight gain curves of coating;
Fig. 6 is the X-diffractogram of prior art bottom;
Fig. 7 is the X-diffractogram of bottom of the present invention;
Fig. 8 is the X-diffractogram of prior art surface layer;
Fig. 9 is the X-diffractogram of surface layer of the present invention.
Embodiment
A kind of aeroengine combustor liner, described aeroengine combustor liner surface-coated has oxidation resistant coating, and described coating is specifically used Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material; Wherein: described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following requirement the: Ni:30.57%, Al:12.62%, and Cr:1.52%, W:0.35%, Mo:0.36%, Ti:0.29%, Co:0.39%, ruby: 46.5%, forming agent: surplus;
The composition of described NiAlW flexible wire and content satisfy following requirement: Ni:63.80%, Al:21.3%, Cr:2.60%, W:1.0%, Mo:0.80%, Ti:0.50%, Co:0.80%, forming agent: surplus;
Above-mentioned forming agent is a silicon rubber.
In the preparation process of described aeroengine combustor liner surface oxidation-resistant coating, described NiAlW alloy flexible wire uses as primer, and the thickness of coating is 0.07mm; Described Al
2O
3The NiAlW flexible wire is as surface material, and the thickness of coating is about 0.14mm;
The spraying parameter of coating preparation is as follows: wire feed control voltage: 10V, rotating disk control voltage 220V～245V; Spray distance: 90mm, oxygen pressure: 0.5MPa, acetylene pressure: 0.08MPa, atomization air pressure: 0.25MPa, crooked air pressure: 0.61Mpa.
Using Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out as raw material in the process of flame plating, employed Al
2O
3The silk feeding quantity of NiAlW flexible wire and these two kinds of flexible wires of NiAlW flexible wire requires to be respectively: Al
2O
3NiAlW flexible wire 6.8g/min, NiAlW flexible wire 8.6g/min.
Employed Al
2O
3The sedimentation rate of NiAlW flexible wire and NiAlW flexible wire also satisfies following requirement the: Al respectively
2O
3NiAlW flexible wire sedimentation rate 4.3g/min, the sedimentation rate 4.5g/min of NiAlW flexible wire; Silk feeding quantity satisfies following requirement: Al
2O
3NiAlW flexible wire 6.0g/min, NiAlW flexible wire 7.0g/min.
Employed Al
2O
3The specification requirement diameter of NiAlW flexible wire and NiAlW flexible wire is 4.1mm; The sedimentation effect of two kinds of wire rods requires to be respectively: Al
2O
3NiAlW flexible wire 73%, NiAlW flexible wire 48%.
Present embodiment and embodiment 1 content are basic identical, and its difference mainly is:
1) a kind of aeroengine combustor liner, described aeroengine combustor liner surface-coated has oxidation resistant coating, and described coating is specifically used Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material; Wherein: described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following requirement the: Ni:30%, Al:12.5%, and Cr:1.4%, W:0.15%, Mo:0.45%, Ti:0.45%, Co:0.4%, ruby: 40%, forming agent: surplus; Is forming agent?
The composition of described NiAlW flexible wire and mass percentage content satisfy following requirement: Ni:62.0%, Al:19.50%, Cr:2.2%, W:0.5%, Mo:0.95%, Ti:0.6%, Co:0.9%, forming agent: surplus;
Above-mentioned forming agent is a silicon rubber.
2) described NiAlW alloy flexible wire uses as primer, and the thickness of coating is 0.05mm; Described Al
2O
3The NiAlW flexible wire is as surface material, and the thickness of coating is about 0.1mmmm;
The spraying parameter of coating preparation is as follows: wire feed control voltage: 9V, rotating disk control voltage 220V spray distance: 100mm, oxygen pressure: 0.4MPa, acetylene pressure: 0.05MPa, atomization air pressure: 0.2MPa, crooked air pressure: 0.45Mpa.
3) using Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out as raw material in the process of flame plating, and the silk feeding quantity of two kinds of flexible wires requires to be respectively: Al
2O
3NiAlW flexible wire 5g/min, NiAlW flexible wire 6g/min.
4) employed Al
2O
3The sedimentation rate of NiAlW flexible wire and NiAlW flexible wire also satisfies following requirement the: Al respectively
2O
3NiAlW flexible wire sedimentation rate 4.1g/min, the sedimentation rate 4.3g/min of NiAlW flexible wire; Silk feeding quantity satisfies following requirement: Al
2O
3NiAlW flexible wire 5.4g/min, NiAlW flexible wire 6.5g/min.
5) employed Al
2O
3The specification requirement diameter of NiAlW flexible wire and NiAlW flexible wire is 4.0mmmm; The sedimentation effect of two kinds of wire rods requires to be respectively: Al
2O
3NiAlW flexible wire 65%, NiAlW flexible wire 40%.
Present embodiment and embodiment 1 content are basic identical, and its difference mainly is:
1) a kind of aeroengine combustor liner, described aeroengine combustor liner surface-coated has oxidation resistant coating, and described coating is specifically used Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material; Wherein: described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following requirement the: Ni:31%, Al:13%, and Cr:1.9%, W:0.5%, Mo:0.2%, Ti:0.12%, Co:0.2%, ruby: 42%, forming agent: surplus;
The composition of described NiAlW flexible wire and mass percentage content satisfy following requirement: Ni:64.0%, Al:21.50%, Cr:2.8%, W:1.2%, Mo:0.45%, Ti:0.25%, Co:0.4%, forming agent: surplus;
Above-mentioned forming agent is a silicon rubber.
2) described NiAlW alloy flexible wire uses as primer, and the thickness of coating is 0.05mm; Described Al
2O
3The NiAlW flexible wire is as surface material, and the thickness of coating is about 0.1mmmm;
The spraying parameter of coating preparation is as follows: wire feed control voltage: 12V, rotating disk control voltage 245V spray distance: 80mm, oxygen pressure: 0.6MPa, acetylene pressure: 0.1MPa, atomization air pressure: 0.3MPa, crooked air pressure: 0.7Mpa.
3) using Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out as raw material in the process of flame plating, and the silk feeding quantity of two kinds of flexible wires requires to be respectively: Al
2O
3NiAlW flexible wire 8g/min, NiAlW flexible wire 11g/min.
4) employed Al
2O
3The sedimentation rate of NiAlW flexible wire and NiAlW flexible wire also satisfies following requirement the: Al respectively
2O
3NiAlW flexible wire sedimentation rate 4.5g/min, the sedimentation rate 4.7g/min of NiAlW flexible wire; Silk feeding quantity satisfies following requirement: Al
2O
3NiAlW flexible wire 6.7g/min, NiAlW flexible wire 7.5g/min.
5) employed Al
2O
3The specification requirement diameter of NiAlW flexible wire and NiAlW flexible wire is 4.3mmmm; The sedimentation effect of two kinds of wire rods requires to be respectively: Al
2O
3NiAlW flexible wire 80%, NiAlW flexible wire 60%.
Present embodiment and embodiment 1 content are basic identical, and its difference mainly is:
Described antioxidant coating of combustion liner of aeroengine uses Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material; Wherein: described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following requirement the: Ni:29%, Al:9%, and Cr:2.5%, W:1.0%, Mo:0.6%, Ti:0.1%, Co:0.1%, ruby: 54%, forming agent: surplus;
The composition of described NiAlW flexible wire and mass percentage content satisfy following requirement: Ni:61.0%, Al:18.0%, Cr:4.0%, W:2.0%, Mo:0.2%, Ti:0.2%, Co:1.2%, forming agent: surplus.Above-mentioned forming agent is a silicon rubber.
Present embodiment and embodiment 1 content are basic identical, and its difference mainly is:
Described antioxidant coating of combustion liner of aeroengine uses Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material; Wherein: described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following requirement the: Ni:34%, Al:14%, and Cr:0.9%, W:0.05%, Mo:0.1%, Ti:0.5%, Co:0.6%, ruby: 38%, forming agent: surplus;
The composition of described NiAlW flexible wire and mass percentage content satisfy following requirement: Ni:67.0%, Al:22.5%, Cr:2.0%, W:0.05%, Mo:1.2%, Ti:1.0%, Co:0.2%, forming agent: surplus.Above-mentioned forming agent is a silicon rubber.
Claims (7)
1. a surface-coated has the aeroengine combustor liner of oxidation resistant coating, and it is characterized in that: described aeroengine combustor liner surface-coated has oxidation resistant coating, and described coating is specifically used Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material; Described NiAlW flexible wire uses as primer, described Al
2O
3The NiAlW flexible wire is as surface material; Wherein:
Described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following the requirement: Ni:29～34%, Al:9～14%, Cr:0.9～2.5%, W≤1.0%, Mo:0.1～0.6%, Ti:0.1～0.5%, Co:0.1～0.6%, ruby: 38～54%, forming agent: surplus;
The composition of described NiAlW flexible wire and mass percentage content satisfy following requirement: Ni:61.0～67.0%, Al:18.0～22.5%, Cr:2.0～4.0%, W≤2.0%, Mo:0.2～1.2%, Ti:0.2～1.0%, Co:0.2～1.2%, forming agent: surplus.
2. the aeroengine combustor liner of oxidation resistant coating is arranged according to the described surface-coated of claim 1, it is characterized in that:
In the employed raw material of the oxidation resistant coating of described aeroengine combustor liner surface-coated:
Described Al
2O
3The composition of NiAlW flexible wire and mass percentage content satisfy following the requirement: Ni:30～31%, Al:12.5～13%, Cr:1.4～1.9%, W:0.15～0.5%, Mo:0.2～0.45%, Ti:0.12～0.45%, Co:0.2～0.4%, ruby: 42～48%, forming agent: surplus;
The composition of described NiAlW flexible wire and content satisfy following requirement: Ni:62.0～64.0%, Al:19.50～21.5%, Cr:2.2～2.8%, W 0.5～1.2%, Mo:0.45～0.95%, Ti:0.25～0.6%, Co:0.4～0.9%, forming agent: surplus;
Described forming agent is a silicon rubber.
3. the aeroengine combustor liner of oxidation resistant coating is arranged according to claim 1 or 2 described surface-coated, it is characterized in that:
The spraying parameter of described aeroengine combustor liner surface oxidation-resistant coating preparation is as follows: wire feed control voltage: 9～12V, rotating disk control voltage 220V～245V; Spray distance: 80～100mm, oxygen pressure: 0.4～0.6MPa, acetylene pressure: 0.05～0.1MPa, atomization air pressure: 0.2～0.3MPa, crooked air pressure: 0.45～0.7MPa
Described NiAlW alloy flexible wire uses as primer, and the thickness of coating is 0.05mm～0.1mm; Described Al
2O
3The NiAlW flexible wire is as surface material, and the thickness of coating is 0.1mm～0.2mm.
4. the aeroengine combustor liner of oxidation resistant coating is arranged according to the described surface-coated of claim 3, it is characterized in that: use Al
2O
3NiAlW flexible wire and NiAlW flexible wire carry out flame plating as raw material so that obtain in the process of oxidation resistant coating, and the silk feeding quantity of two kinds of flexible wires is 4～12g/min.
5. the aeroengine combustor liner of oxidation resistant coating is arranged according to the described surface-coated of claim 4, it is characterized in that: employed Al
2O
3The silk feeding quantity of NiAlW flexible wire and these two kinds of flexible wires of NiAlW flexible wire requires to be respectively: Al
2O
3NiAlW flexible wire 5～8g/min, NiAlW flexible wire 6～11g/min.
6. the aeroengine combustor liner of oxidation resistant coating is arranged according to the described surface-coated of claim 5, it is characterized in that: employed Al
2O
3The sedimentation rate of NiAlW flexible wire and NiAlW flexible wire also satisfies following requirement the: Al respectively
2O
3NiAlW flexible wire sedimentation rate 4.1～4.5g/min, the sedimentation rate 4.3～4.7g/min of NiAlW flexible wire;
Silk feeding quantity satisfies following requirement: Al
2O
3NiAlW flexible wire 5.4～6.7g/min, NiAlW flexible wire 6.5～7.5g/min.
7. the aeroengine combustor liner of oxidation resistant coating is arranged according to the described surface-coated of claim 6, it is characterized in that: employed Al
2O
3The specification requirement diameter of NiAlW flexible wire and NiAlW flexible wire is 4.0mm～4.3mm; The sedimentation effect of two kinds of wire rods requires to be respectively: Al
2O
3NiAlW flexible wire 65～80%, NiAlW flexible wire 40～60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102469070A CN101768716B (en) | 2008-12-30 | 2008-12-30 | Aeroengine combustor liner with surface coated with oxidation resistant coating |
Applications Claiming Priority (1)
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |