CN105039896A - Aircraft engine brushing type sealing coating layer and coating method - Google Patents
Aircraft engine brushing type sealing coating layer and coating method Download PDFInfo
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Abstract
The invention belongs to a surface treatment technology, and relates to an aircraft engine brushing type sealing coating layer and a coating method. The sealing coating layer is provided with a transition layer between a bonding layer and a surface layer, wherein the material of the transition layer is a mixture of cobalt-nickel-chrome-aluminum-yttrium powder and chrome carbide powder containing fluoride. The coating method comprises the coating steps of part surface deoiling, part surface protection, part surface sand blowing, spraying of the bonding layer, spraying of the transition layer and spraying of the surface layer. The coating method effectively solves the problems of stress concentration, weak gradient field, low binding force and easy stripping of coating layers in the use process caused by conversion mutation between the coating layers; and the transition layer is added to form a similar gradient structure, so that the inter-layer stress concentration and the strain problem are effectively relieved, the research requirements of high-performance brushing type sealing coating layers of national aircraft engines are satisfied, and the research requirements of the brushing type sealing coating layers of the national aircraft engines are satisfied.
Description
Technical field
The invention belongs to process for treating surface, relate to a kind of aircraft engine brush seal coating and coating method of improvement.
Background technology
In the design of aircraft engine and internal combustion turbine, be the working efficiency improving pneumatic plant, clearance control measure need be taked.Research shows, improves and develop packing technique to have important effect to improving turbine engine performance further, and it is the technological approaches that a kind of income is large, cost is little.Compared with sealing with comb tooth, the brush seal advantage that to have that spillage is very low, environmental compatibility is stronger etc. numerous, can improve the thrust-weight ratio of turbine engine significantly and reduce oil consumption.Therefore, brush seal be the sealing of generally acknowledged comb tooth the most simply, the most practical, the most effective substitute products, entered the application stage of aircraft engine abroad.Brush seal is primarily of brush ring and antithesis runway composition.Antithesis runway is generally by the steel alloy manufacture of good heat conductivity, spraying of wearable coating on the surface rubbed mutually with brush silk, this coating improves the work-ing life of sealed track on the one hand, require that there is self-lubricating property simultaneously, reduce the wearing and tearing of brushing silk in use procedure, therefore brush envelope runway wear-resistant coating is the important component part of brush seal structure, is brush seal structure high reliability, long-life important guarantee.Detonation flame spraying wear-resistant coating process technology and other hot-spraying techniques are as compared with the techniques such as plasma (APS), hypersonic flame spraying (HVOF), the coating obtained by detonation flame spraying technique has the highest bonding strength, the highest density, the feature minimum to the heat affecting of body material.
Current aircraft engine brush seal coating is made up of tack coat and upper layer, and bonding layer material is made up of the smooth powder that waits of nickel chromium triangle aluminium, and be coated on antithesis runway, the chromium carbide powder of surface layer material fluorinated barium is formed, and is coated in the outside of tack coat.The shortcoming of this brush seal coating is: coating transition mutations between structure coating, causes being coated with interlayer stress concentration, and gradient fields is poor, and bonding force is low, and use procedure floating coat easily peels off.
Summary of the invention
The object of the invention is: the gradient-like structural aeronautical engine brush seal coating and the coating method that propose a kind of improvement, employing changes method and prepares brush seal coating, effectively can alleviate coating transition mutations between structure coating, the painting interlayer stress concentration caused, gradient fields is poor, bonding force is low, and use procedure floating coat easily peels off, and effectively alleviates inter-laminar stress and concentrates and strain problems.
Technical scheme of the present invention is: a kind of aircraft engine brush seal coating, comprise the tack coat, transition layer and the upper layer that are coated in drum barrel axle or obturage on ring external cylindrical surface, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder, and the chromium carbide powder of surface layer material fluoride is formed; It is characterized in that: between tack coat and upper layer, have one deck transition layer, buffer layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% ~ 60% of middle layer powder weight; Transition layer is coated in the outside of tack coat, and upper layer is coated in the outside of transition layer.
A coating method for engine brush seal coating, adopt detonation flame spraying equipment to apply brush seal coating on drum barrel axle or ring external cylindrical surface of obturaging, it is characterized in that, the step of coating is as follows:
1, piece surface oil removing: be immersed in by part in acetone or industrial washing gasoline, soak time is 10min at least, then takes out and dries;
2, piece surface protection: adopt the non-spraying region of High temperature-resistanadhesive adhesive tape cap piece to protect;
3, piece surface blast: employing granularity is that the emergy of 20# or 60# carries out dry blast to part spraying area.Blast parameter: blast angle is less than 85 ° for being greater than 45 °, and blast is 0.14 ~ 0.28MPa, and blast distance is 200 ~ 450mm;
4, spray tack coat: adopt detonation flame spraying equipment, to the spraying area spraying tack coat of part, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder.Spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, and oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 45ms, propane is 5 ~ 40ms; Oxygen is 5 ~ 45ms, and nitrogen is 130 ~ 220ms, and powder feeding is 110 ~ 160ms, and spray distance is 200 ~ 300mm;
5, transition layer is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying transition layer of part, intermediate layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% ~ 60% of middle layer powder weight.Spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, and oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 50ms, propane is 5 ~ 35ms; Oxygen is 5 ~ 45ms, and nitrogen is 130 ~ 250ms, and powder feeding is 100 ~ 150ms, and spray distance is 200 ~ 300mm;
6, sprayed surface layer: adopt detonation flame spraying equipment, to the spraying area sprayed surface interbed of part, the chromium carbide powder of surface layer material fluoride is formed, spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 60ms, propane is 5 ~ 55ms; Oxygen is 5 ~ 60ms, and nitrogen is 130 ~ 250ms, and powder feeding is 80 ~ 160ms, and spray distance is 200 ~ 300mm.
Advantage of the present invention is: the aircraft engine brush seal coating and the coating method that propose a kind of improvement, efficiently solve transition mutations between double-layer structure coating, the painting interlayer stress concentration caused, gradient fields is poor, bonding force is low, the easy spallation problems of use procedure floating coat.Adding of transition layer defines gradient-like structure, effectively alleviates the problem being coated with interlayer stress concentration, meets the needs of China's aircraft engine high-performance brush seal coating development.
Embodiment
Below the present invention is described in further details.A kind of aircraft engine brush seal coating, comprise the tack coat, transition layer and the upper layer that are coated in drum barrel axle or obturage on ring external cylindrical surface, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder, and the chromium carbide powder of surface layer material fluoride is formed; It is characterized in that: between tack coat and upper layer, have one deck transition layer, buffer layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% ~ 60% of middle layer powder weight; Transition layer is coated in the outside of tack coat, and upper layer is coated in the outside of transition layer.
A coating method for engine brush seal coating, adopt detonation flame spraying equipment to apply brush seal coating on drum barrel axle or ring external cylindrical surface of obturaging, it is characterized in that, the step of coating is as follows:
1, piece surface oil removing: be immersed in by part in acetone or industrial washing gasoline, soak time is 10min at least, then takes out and dries;
2, piece surface protection: adopt the non-spraying region of High temperature-resistanadhesive adhesive tape cap piece to protect;
3, piece surface blast: employing granularity is that the emergy of 20# or 60# carries out dry blast to part spraying area.Blast parameter: blast angle is less than 85 ° for being greater than 45 °, and blast is 0.14 ~ 0.28MPa, and blast distance is 200 ~ 450mm;
4, spray tack coat: adopt detonation flame spraying equipment, to the spraying area spraying tack coat of part, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder.Spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, and oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 45ms, propane is 5 ~ 40ms; Oxygen is 5 ~ 45ms, and nitrogen is 130 ~ 220ms, and powder feeding is 110 ~ 160ms, and spray distance is 200 ~ 300mm;
5, transition layer is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying transition layer of part, intermediate layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% ~ 60% of middle layer powder weight.Spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, and oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 50ms, propane is 5 ~ 35ms; Oxygen is 5 ~ 45ms, and nitrogen is 130 ~ 250ms, and powder feeding is 100 ~ 150ms, and spray distance is 200 ~ 300mm;
6, sprayed surface layer: adopt detonation flame spraying equipment, to the spraying area sprayed surface interbed of part, the chromium carbide powder of surface layer material fluoride is formed, spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 60ms, propane is 5 ~ 55ms; Oxygen is 5 ~ 60ms, and nitrogen is 130 ~ 250ms, and powder feeding is 80 ~ 160ms, and spray distance is 200 ~ 300mm.
Embodiment 1, before certain type aircraft engine, runway adopts blast coating processes method to prepare seal coating.
Powder constituent: tack coat powder is cobalt nichrome-chromium-aluminium-yttrium powder constituent, wherein component content is cobalt 32 nickel 21 chromium 8 aluminium 0.5 yttrium, and powder size is-63 ~+45 μm, and the weight percent of powder is 100%; Transition layer powder is the mixture of the chromium carbide of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% of middle layer powder weight; Top layer powder is the chromium carbide powder of fluoride.The step of coating is as follows:
1, walk piece surface oil removing: be immersed in by part in acetone or industrial washing gasoline, soak time 25min, then take out and dry;
2, piece surface protection: adopt the non-spraying region of High temperature-resistanadhesive adhesive tape cap piece to protect;
3, piece surface blast: employing granularity is that the emergy of 20# carries out dry blast to part spraying area.Blast parameter: blast angle is less than 85 ° for being greater than 45 °, and blast is 0.14MPa, blast distance is 200mm;
4, tack coat is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying tack coat of part, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder, wherein component content is cobalt 32 nickel 21 chromium 8 aluminium 0.5 yttrium, powder size is-63 ~+45 μm, and the weight percent of cobalt nichrome-chromium-aluminium-yttrium powder is 100%.Spray parameters: acetylene pressure is 0.8bar, propane pressure is 0.8bar, and oxygen pressure is 0.8bar, and nitrogen pressure is 1.0bar.In the gas period: acetylene is 10ms, propane is 15ms; Oxygen is 10ms, and nitrogen is 130ms, and powder feeding is 110ms, and spray distance is 200mm, and coat-thickness is 0.1mm;
5, transition layer is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying transition layer of part, intermediate layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% of middle layer powder weight.Spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.8bar, and oxygen pressure is 0.8bar, and nitrogen pressure is 1.0bar.In the gas period: acetylene is 18ms, propane is 18ms; Oxygen is 10ms, and nitrogen is 130ms, and powder feeding is 100ms, and spray distance is 200mm, and transition layer coat-thickness is 0.2mm;
6, sprayed surface layer: adopt detonation flame spraying equipment, to the spraying area sprayed surface interbed of part, the chromium carbide powder of surface layer material fluoride is formed, and the weight percent of the mix powder of the chromium carbide of fluoride is 100%.Spray parameters: acetylene pressure is 0.8bar, propane pressure is 0.8bar, and oxygen pressure is 0.8bar, and nitrogen pressure is 1.0bar.In the gas period: acetylene is 20ms, propane is 20ms; Oxygen is 25ms, and nitrogen is 130ms, and powder feeding is 80ms, and spray distance is 200mm, and coat-thickness is 1.0mm.
Embodiment 2, after certain type aircraft engine, runway adopts blast coating processes method to prepare seal coating.
Powder constituent: tack coat powder is cobalt nichrome-chromium-aluminium-yttrium powder constituent, wherein component content is cobalt 32 nickel 21 chromium 8 aluminium 0.5 yttrium, and powder size is-63 ~+45 μm, and the weight percent of powder is 100%; Transition layer powder is the mixture of the chromium carbide of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 50% of middle layer powder weight; Top layer powder is the chromium carbide powder of fluoride, and the weight percent of powder is 100%.The step of coating is as follows:
1, piece surface oil removing: be immersed in by part in acetone or industrial washing gasoline, soak time 20min, then takes out and dries;
2, piece surface protection: adopt the non-spraying region of High temperature-resistanadhesive adhesive tape cap piece to protect;
3, piece surface blast: employing granularity is that the emergy of 60# carries out dry blast to part spraying area.Blast parameter: blast angle is less than 85 ° for being greater than 45 °, and blast is 0.2MPa, blast distance is 300mm;
4, tack coat is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying tack coat of part, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder, wherein component content is cobalt 32 nickel 21 chromium 8 aluminium 0.5 yttrium, powder size is-63 ~+45 μm, and the weight percent of cobalt nichrome-chromium-aluminium-yttrium powder is 100%.Spray parameters: acetylene pressure is 1.5bar, propane pressure is 2.0bar, and oxygen pressure is 2.0bar, and nitrogen pressure is 2.0bar.In the gas period: acetylene is 30ms, propane is 30ms; Oxygen is 25ms, and nitrogen is 180ms, and powder feeding is 140ms, and spray distance is 250mm, and coat-thickness is 0.1mm;
5, transition layer is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying transition layer of part, intermediate layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 50% of middle layer powder weight.Spray parameters: acetylene pressure is 1.5bar, propane pressure is 2.0bar, and oxygen pressure is 2.0bar, and nitrogen pressure is 2.0bar.In the gas period: acetylene is 40ms, propane is 25ms; Oxygen is 30ms, and nitrogen is 180ms, and powder feeding is 140ms, and spray distance is 250mm, and transition layer coat-thickness is 0.2mm;
6, sprayed surface layer: adopt detonation flame spraying equipment, to the spraying area sprayed surface interbed of part, the chromium carbide powder of surface layer material fluoride is formed, and the weight percent of the mix powder of the chromium carbide of fluoride is 100%.Spray parameters: acetylene pressure is 1.5bar, propane pressure is 2.0bar, and oxygen pressure is 2.0bar, and nitrogen pressure is 2.0bar.In the gas period: acetylene is 45ms, propane is 45ms; Oxygen is 50ms, and nitrogen is 180ms, and powder feeding is 150ms, and spray distance is 260mm, and coat-thickness is 1.3mm.
Embodiment 3, certain aircraft engine brush seal ring detonation flame spraying processing method prepares coating seal coating.
Powder constituent: tack coat powder is cobalt nichrome-chromium-aluminium-yttrium powder constituent, wherein component content is cobalt 32 nickel 21 chromium 8 aluminium 0.5 yttrium, and powder size is-63 ~+45 μm, and the weight percent of powder is 100%; Middle layer powder is the mixture of the chromium carbide of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 60% of middle layer powder weight; Top layer powder is the chromium carbide powder of fluoride, and the weight percent of powder is 100%.The step of coating is as follows:
1, piece surface oil removing: be immersed in by part in acetone or industrial washing gasoline, soak time 15min, then takes out and dries;
2, piece surface protection: adopt the non-spraying region of High temperature-resistanadhesive adhesive tape cap piece to protect;
3, piece surface blast: employing granularity is that the emergy of 60# carries out dry blast to part spraying area.Blast parameter: blast angle is less than 85 ° for being greater than 45 °, and blast is 0.28MPa, blast distance is 300mm;
4, tack coat is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying tack coat of part, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder, wherein component content is cobalt 32 nickel 21 chromium 8 aluminium 0.5 yttrium, powder size is-63 ~+45 μm, and the weight percent of cobalt nichrome-chromium-aluminium-yttrium powder is 100%.Spray parameters: acetylene pressure is 1.5bar, propane pressure is 2.5bar, and oxygen pressure is 2.5bar, and nitrogen pressure is 2.5bar.In the gas period: acetylene is 45ms, propane is 40ms; Oxygen is 45ms, and nitrogen is 220ms, and powder feeding is 160ms, and spray distance is 300mm, and coat-thickness is 0.1mm;
5, transition layer is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying transition layer of part, intermediate layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 60% of middle layer powder weight.Spray parameters: acetylene pressure is 1.5bar, propane pressure is 2.5bar, and oxygen pressure is 2.5bar, and nitrogen pressure is 2.5bar.In the gas period: acetylene is 50ms, propane is 35ms; Oxygen is 45ms, and nitrogen is 250ms, and powder feeding is 150ms, and spray distance is 300mm, and transition layer coat-thickness is 0.25mm;
6, sprayed surface layer: adopt detonation flame spraying equipment, to the spraying area sprayed surface interbed of part, the chromium carbide powder of surface layer material fluoride is formed, and the weight percent of the mix powder of the chromium carbide of fluoride is 100%.Spray parameters: acetylene pressure is 5bar, propane pressure is 2.5bar, and oxygen pressure is 2.5bar, and nitrogen pressure is 2.5bar.In the gas period: acetylene is 60ms, propane is 55ms; Oxygen is 60ms, and nitrogen is 250ms, and powder feeding is 160ms, and spray distance is 300mm, and coat-thickness is 1.5mm.
Claims (2)
1. an aircraft engine brush seal coating, comprises the tack coat, transition layer and the upper layer that are coated in drum barrel axle or obturage on ring external cylindrical surface, and bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder, and the chromium carbide powder of surface layer material fluoride is formed; It is characterized in that: between tack coat and upper layer, have one deck transition layer, buffer layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% ~ 60% of middle layer powder weight.Transition layer is coated in the outside of tack coat, and upper layer is coated in the outside of transition layer.
2. a coating method for engine brush seal coating, adopt detonation flame spraying equipment to apply brush seal coating on drum barrel axle or ring external cylindrical surface of obturaging, it is characterized in that, the step of coating is as follows:
2.1, piece surface oil removing: be immersed in by part in acetone or industrial washing gasoline, soak time is 10min at least, then takes out and dries;
2.2, piece surface protection: adopt the non-spraying region of High temperature-resistanadhesive adhesive tape cap piece to protect;
2.3, piece surface blast: employing granularity is that the emergy of 20# or 60# carries out dry blast to part spraying area.Blast parameter: blast angle is less than 85 ° for being greater than 45 °, and blast is 0.14 ~ 0.28MPa, and blast distance is 200 ~ 450mm;
2.4, spray tack coat: adopt detonation flame spraying equipment, to the spraying area spraying tack coat of part, bonding layer material is made up of cobalt nichrome-chromium-aluminium-yttrium powder.Spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, and oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 45ms, propane is 5 ~ 40ms; Oxygen is 5 ~ 45ms, and nitrogen is 130 ~ 220ms, and powder feeding is 110 ~ 160ms, and spray distance is 200 ~ 300mm;
2.5, transition layer is sprayed: adopt detonation flame spraying equipment, to the spraying area spraying transition layer of part, intermediate layer material is the mixture of the chromium carbide powder of cobalt nichrome-chromium-aluminium-yttrium powder and fluoride, and the weight of cobalt nichrome-chromium-aluminium-yttrium powder accounts for 40% ~ 60% of middle layer powder weight.Spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, and oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 50ms, propane is 5 ~ 35ms; Oxygen is 5 ~ 45ms, and nitrogen is 130 ~ 250ms, and powder feeding is 100 ~ 150ms, and spray distance is 200 ~ 300mm;
2.6, sprayed surface layer: adopt detonation flame spraying equipment, to the spraying area sprayed surface interbed of part, the chromium carbide powder of surface layer material fluoride is formed, spray parameters: acetylene pressure is 0.5 ~ 1.5bar, propane pressure is 0.5 ~ 2.5bar, oxygen pressure is 0.5 ~ 2.5bar, and nitrogen pressure is 0.5 ~ 2.5bar.In the gas period: acetylene is 5 ~ 60ms, propane is 5 ~ 55ms; Oxygen is 5 ~ 60ms, and nitrogen is 130 ~ 250ms, and powder feeding is 80 ~ 160ms, and spray distance is 200 ~ 300mm.
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| CN109317377A (en) * | 2018-11-22 | 2019-02-12 | 中国航发沈阳黎明航空发动机有限责任公司 | The compatible coating coating of low temperature multiband and repair method in engine tail nozzle part |
| CN109554657A (en) * | 2018-11-30 | 2019-04-02 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of tissue gradual change titanium fire preventing abradable seal coating and preparation method thereof |
| CN114774830A (en) * | 2022-06-20 | 2022-07-22 | 矿冶科技集团有限公司 | Multifunctional coating, preparation method thereof and power equipment |
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Cited By (4)
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| CN109554657B (en) * | 2018-11-30 | 2020-10-27 | 中国航发沈阳黎明航空发动机有限责任公司 | Titanium fire-resistant abradable seal coating with gradually-changed structure and preparation method thereof |
| CN114774830A (en) * | 2022-06-20 | 2022-07-22 | 矿冶科技集团有限公司 | Multifunctional coating, preparation method thereof and power equipment |
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Application publication date: 20151111 |