CN105063544A - Nano-particle electromagnetic interference prevention thermal barrier coating and manufacture method thereof - Google Patents
Nano-particle electromagnetic interference prevention thermal barrier coating and manufacture method thereof Download PDFInfo
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- CN105063544A CN105063544A CN201510495381.XA CN201510495381A CN105063544A CN 105063544 A CN105063544 A CN 105063544A CN 201510495381 A CN201510495381 A CN 201510495381A CN 105063544 A CN105063544 A CN 105063544A
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Abstract
The invention discloses a nano-particle electromagnetic interference prevention thermal barrier coating. Compared with a traditional thermal barrier coating, carbon dust is added; the porosity of a ceramic phase can be improved after high-temperature calcination modification; in a spraying process, part of particles are not melted fully in a plasma jet, so that the deformation degree of the particles is lower during impact on a base, and porous structures in lap joint with one another can be easily formed; and therefore the heat-insulating property of the coating can be obviously improved. Furthermore, according to the nano-particle electromagnetic interference prevention thermal barrier coating disclosed by the invention, by adopting the modification method, Zr<4+> in a zirconium dioxide crystal lattice is replaced by Y<3+> and Ce<4+>, so that oxygen vacancies and a partial stress field are formed; phonon scattering in the crystal lattice is increased; the heat conductivity is obviously lowered; besides, the atomic weight of the solid solution atom Ce is much greater than that of Y, so that the scattering intensity of phonons in the product can be obviously improved, and accordingly the heat conductivity is reduced. The manufacture process disclosed by the invention is simple, and the manufactured coating has an electromagnetic interference prevention property, a fused salt corrosion prevention property and a good thermal shock property.
Description
Technical field
The present invention relates to Machining of Ceramics technical field, be specifically related to thermal barrier coating of the anti-electromagnetic interference of a kind of nano particle and preparation method thereof.
Background technology
Along with aero-gas turbine is to high flow capacity ratio, high thrust-weight ratio, high air inlet temperature future development, the working temperature in combustion chamber is considerably beyond the use temperature limit of Ni based high-temperature alloy.Prepare thermal barrier coating at superalloy matrix surface, holding warm ability to raising matrix has very directly effect, thus effectively improves the working temperature of part, increases the service life.
It is a kind ofly utilize the material that thermal conductivity is relatively low that thermal barrier coating leads to, and is coated on superalloy matrix surface thus plays the functional coating of heat-blocking action by suitable technology.Typical thermal barrier coating is made up of superalloy matrix, metal bonding coating and top heat insulating ceramic coat.Wherein, superalloy matrix mainly bears mechanical load; Tack coat mainly works to improve matrix and ceramic coating physical compatibility and antioxidant anticorrosive; Top ceramic layer Main Function is isolated heat and produces thermograde, and its heterogeneous microstructure plays a crucial role to the heat-proof quality of thermal barrier coating and work-ing life.But when thermal barrier coating is applied to the working temperature day by day increased, harsher Working environment will be faced, the obtained thermal barrier coating of prior art exist easily undergo phase transition, oxidation-resistance is low, intensity is little, poor high temperature stability, easily produce the defects such as high temperature corrosion, is difficult to meet the needs that turbine intake temperature improves further.Therefore, the focus that better heat-proof quality and good stability, elevated temperature corrosion resistant are excellent under the high temperature conditions novel heat barrier coat material become thermal barrier coating area research is in recent years found.
Summary of the invention
Object of the present invention is just to provide thermal barrier coating of the anti-electromagnetic interference of a kind of nano particle and preparation method thereof, to overcome the deficiencies in the prior art.
The object of the present invention is achieved like this:
The thermal barrier coating of the anti-electromagnetic interference of a kind of nano particle, it is characterized in that, be made up of the raw material of following weight part: cerium oxide 29-33, zirconium dioxide 23-27, yttrium oxide 30-34, carbon dust 9-11, nano ferriferrous oxide 1.2-1.8, vinyl chloride-vinyl acetate resin 6-9, NiCoCrAlYTa alloy powder 59-63, N-Methyl pyrrolidone 3-5, TiB2 13-15, ferrovanadium dregs 27-30, lanthanum nitrate 2-4.
The preparation method of the thermal barrier coating of the described anti-electromagnetic interference of a kind of nano particle, is characterized in that comprising the following steps:
(1) by nano ferriferrous oxide, NiCoCrAlYTa alloy powder in 680-750 DEG C of pyroprocessing 30-50 minute, be cooled to room temperature rapidly, add lanthanum nitrate ultrasonic grinding 20-40 minute, be heated to melting, stir 5-8h, under vacuum atmosphere, condensation is shaping, obtained modified metal tack coat of pulverizing;
(2) join in ball mill by carbon dust, the vinyl chloride-vinyl acetate resin, the N-Methyl pyrrolidone that spray into molten state are mixed thoroughly, add TiB2, carry out ball milling, mix, break up obtained modification carbon dust under normal temperature;
(3) by modification carbon dust, cerium oxide, zirconium dioxide, yttrium oxide through 1510-1620 DEG C of high-temperature calcination 2-4 hour, cooling adds other remaining component and is ground to 200-300 order, obtained modified ceramic powder;
(4) by superalloy matrix after ultrasonic oil removing, sandblasting pre-treatment, by electron thermal explosion method by step (1) material even application on superalloy matrix;
(5) finally by air plasma spraying method, the spraying current of 500A is adopted to be deposited on metal bonding coating by obtained for step (3) modified ceramic powder.
The present invention has following beneficial effect: the thermal barrier coating that the present invention obtains is compared with traditional thermal barrier coating, add carbon dust through the modified porosity improving ceramic phase of high-temperature calcination, and some particles melts insufficient in plasma jet in spraying process, when clashing into matrix, deformation extent is slightly weak, the vesicular structure that easy formation overlaps, the heat-proof quality of coating is significantly improved, and secondly the present invention is by method of modifying, Y in zirconium dioxide lattice
3+, Ce
4+replace Zr
4+create the stress field of Lacking oxygen and local, add the phon scattering in lattice, thermal conductivity obviously reduces, and the nucleidic mass of solid solution atom Ce is far longer than the nucleidic mass of Y, can significantly improve the scattering strength of the phonon in product of the present invention, thus reduce thermal conductivity, preparation technology of the present invention is simple, and prepared coating has anti-electromagnetic interference, anti-fused salt corrosion performance and good thermal shock performance.
Embodiment
The thermal barrier coating of the described anti-electromagnetic interference of a kind of nano particle, it is characterized in that, be made up of the raw material of following weight part: cerium oxide 32, zirconium dioxide 25, yttrium oxide 33, carbon dust 9, nano ferriferrous oxide 1.2, vinyl chloride-vinyl acetate resin 9, NiCoCrAlYTa alloy powder 59, N-Methyl pyrrolidone 3, TiB2 15, ferrovanadium dregs 27, lanthanum nitrate 4.
Making method comprises the following steps:
(1) by nano ferriferrous oxide, NiCoCrAlYTa alloy powder in 680-750 DEG C of pyroprocessing 30-50 minute, be cooled to room temperature rapidly, add lanthanum nitrate ultrasonic grinding 20-40 minute, be heated to melting, stir 5-8h, under vacuum atmosphere, condensation is shaping, obtained modified metal tack coat of pulverizing;
(2) join in ball mill by carbon dust, the vinyl chloride-vinyl acetate resin, the N-Methyl pyrrolidone that spray into molten state are mixed thoroughly, add TiB2, carry out ball milling, mix, break up obtained modification carbon dust under normal temperature;
(3) by modification carbon dust, cerium oxide, zirconium dioxide, yttrium oxide through 1510-1620 DEG C of high-temperature calcination 2-4 hour, cooling adds other remaining component and is ground to 200-300 order, obtained modified ceramic powder;
(4) by superalloy matrix after ultrasonic oil removing, sandblasting pre-treatment, by electron thermal explosion method by step (1) material even application on superalloy matrix;
(5) finally by air plasma spraying method, the spraying current of 500A is adopted to be deposited on metal bonding coating by obtained for step (3) modified ceramic powder.
The technical parameter index of the thermal barrier coating using the present invention to produce is as follows:
(1) coating porosity: 18.7%;
(2) record coating cross sections through metaloscope and have more closed hole and vertical micro--crack;
(3) temperature head by measuring coatingsurface and the sample back side calculates the heat-proof quality of coating, and increase rate has been up to about 51.2%.
Claims (4)
1. the thermal barrier coating of the anti-electromagnetic interference of nano particle, it is characterized in that, be made up of the raw material of following weight part: cerium oxide 29-33, zirconium dioxide 23-27, yttrium oxide 30-34, carbon dust 9-11, nano ferriferrous oxide 1.2-1.8, vinyl chloride-vinyl acetate resin 6-9, NiCoCrAlYTa alloy powder 59-63, N-Methyl pyrrolidone 3-5, TiB2 13-15, ferrovanadium dregs 27-30, lanthanum nitrate 2-4.
2. the making method of the thermal barrier coating of the anti-electromagnetic interference of a kind of nano particle according to claim 1, is characterized in that comprising the following steps:
(1) by nano ferriferrous oxide, NiCoCrAlYTa alloy powder in 680-750 DEG C of pyroprocessing 30-50 minute, be cooled to room temperature rapidly, add lanthanum nitrate ultrasonic grinding 20-40 minute, be heated to melting, stir 5-8h, under vacuum atmosphere, condensation is shaping, obtained modified metal tack coat of pulverizing;
(2) join in ball mill by carbon dust, the vinyl chloride-vinyl acetate resin, the N-Methyl pyrrolidone that spray into molten state are mixed thoroughly, add TiB2, carry out ball milling, mix, break up obtained modification carbon dust under normal temperature;
(3) by modification carbon dust, cerium oxide, zirconium dioxide, yttrium oxide through 1510-1620 DEG C of high-temperature calcination 2-4 hour, cooling adds other remaining component and is ground to 200-300 order, obtained modified ceramic powder;
(4) by superalloy matrix after ultrasonic oil removing, sandblasting pre-treatment, by electron thermal explosion method by step (1) material even application on superalloy matrix;
(5) finally by air plasma spraying method, the spraying current of 500A is adopted to be deposited on metal bonding coating by obtained for step (3) modified ceramic powder.
3. the making method of the thermal barrier coating of the anti-electromagnetic interference of a kind of nano particle according to claim 2, is characterized in that, described metal bonding coating coating thickness is 100 μm, and ceramic layer coats thickness is 300 μm.
4. the making method of the thermal barrier coating of the anti-electromagnetic interference of a kind of nano particle according to claim 2, is characterized in that, described superalloy matrix is K4169 superalloy.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945815A (en) * | 2017-03-14 | 2017-07-14 | 上海帆煜自动化科技有限公司 | One kind is based on nano material effectively antistatic unmanned plane |
| CN107987429A (en) * | 2017-12-27 | 2018-05-04 | 成都新柯力化工科技有限公司 | A kind of high voltage direct current cable material and preparation method for suppressing space charge accumulation |
| CN110885257A (en) * | 2019-12-11 | 2020-03-17 | 中国人民解放军空军工程大学 | Carbon/carbon composite material surface functional coating and preparation method thereof |
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| WO1999023862A1 (en) * | 1997-10-31 | 1999-05-14 | Nanogram Corporation | Electromagnetic shielding |
| CN101660115A (en) * | 2009-09-18 | 2010-03-03 | 武汉理工大学 | Preparation method of nanometer zirconia heat barrier coating |
| CN102337101A (en) * | 2010-07-16 | 2012-02-01 | 财团法人工业技术研究院 | Composition for electromagnetic shielding, device using same and structure preparation method |
| CN103388118A (en) * | 2012-05-11 | 2013-11-13 | 通用电气公司 | Method of coating component, method of forming cooling hole, and water soluble aperture plug |
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2015
- 2015-08-13 CN CN201510495381.XA patent/CN105063544A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1999023862A1 (en) * | 1997-10-31 | 1999-05-14 | Nanogram Corporation | Electromagnetic shielding |
| CN101660115A (en) * | 2009-09-18 | 2010-03-03 | 武汉理工大学 | Preparation method of nanometer zirconia heat barrier coating |
| CN102337101A (en) * | 2010-07-16 | 2012-02-01 | 财团法人工业技术研究院 | Composition for electromagnetic shielding, device using same and structure preparation method |
| CN103388118A (en) * | 2012-05-11 | 2013-11-13 | 通用电气公司 | Method of coating component, method of forming cooling hole, and water soluble aperture plug |
Non-Patent Citations (1)
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| 吴子健: "《热喷涂技术与应用》", 31 January 2006, 机械工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945815A (en) * | 2017-03-14 | 2017-07-14 | 上海帆煜自动化科技有限公司 | One kind is based on nano material effectively antistatic unmanned plane |
| CN107987429A (en) * | 2017-12-27 | 2018-05-04 | 成都新柯力化工科技有限公司 | A kind of high voltage direct current cable material and preparation method for suppressing space charge accumulation |
| CN110885257A (en) * | 2019-12-11 | 2020-03-17 | 中国人民解放军空军工程大学 | Carbon/carbon composite material surface functional coating and preparation method thereof |
| CN110885257B (en) * | 2019-12-11 | 2022-02-15 | 中国人民解放军空军工程大学 | Carbon/carbon composite material surface functional coating and preparation method thereof |
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