CN110468365A - A kind of high emissivity, lower thermal conductivity coating and preparation method thereof - Google Patents
A kind of high emissivity, lower thermal conductivity coating and preparation method thereof Download PDFInfo
- Publication number
- CN110468365A CN110468365A CN201910841764.6A CN201910841764A CN110468365A CN 110468365 A CN110468365 A CN 110468365A CN 201910841764 A CN201910841764 A CN 201910841764A CN 110468365 A CN110468365 A CN 110468365A
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- CN
- China
- Prior art keywords
- preparation
- coating
- high emissivity
- thermal conductivity
- lower thermal
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Abstract
The invention belongs to thermal protection coating preparation technical fields, and in particular to a kind of high emissivity, lower thermal conductivity coating and preparation method thereof.The preparation method is included in part base solid surface and successively sprays CoNiCrAlY bottom, zirconium oxide transition zone and high emissivity surface layer, obtains high emissivity, lower thermal conductivity coating.The high emissivity that is obtained using the present invention, lower thermal conductivity coating, coating layer thickness is structurally reasonable, can effectively avoid between layers of material because of failure caused by thermal expansion coefficient difference；Using the combination of the materials such as high-emissivity material, zirconium oxide transition zone, bottom, while slin emissivity can be improved, high-temperature high-speed airflow is reduced to the heat transfer of matrix, the thermal force of thermal structure part is effectively reduced.
Description
Technical field
The invention belongs to thermal protection coating preparation technical fields, and in particular to a kind of high emissivity, lower thermal conductivity coating and
Preparation method.
Background technique
Being resistant to pneumatic thermal environment is Flight Vehicle Structure and thermal protection system most distinct issues, it is necessary to take effective heat anti-
Shield measure guarantee body structure and below deck equipment safety at a temperature of work, wherein thermal structure parts are to high emissivity, low-heat
The demand of conductance coating urgent.
Summary of the invention
(1) technical problems to be solved
The present invention proposes a kind of high emissivity, lower thermal conductivity coating and preparation method thereof, how to solve in high temperature alloy
Matrix surface prepares the technical issues of high emissivity, lower thermal conductivity coating.
(2) technical solution
In order to solve the above-mentioned technical problem, the present invention proposes a kind of high emissivity, the preparation method of lower thermal conductivity coating, should
Preparation method is included in part base solid surface and successively sprays CoNiCrAlY bottom, zirconium oxide transition zone and high emissivity surface layer, obtains
To high emissivity, lower thermal conductivity coating.
Further, which specifically comprises the following steps:
S1, preliminary examination: piece surface impulse- free robustness, corrosion, greasy dirt, is scratched, is damaged, color-coded and impurity sharp edge；
S2, cleaning: piece surface to be sprayed is brushed completely with compressed air；
S3, protection: the non-spraying region of part is protected；
S4, blast: blast processing is carried out to piece surface；
S5, preheating: part is preheated before spraying；
S6, spraying: CoNiCrAlY bottom, zirconium oxide transition zone and high emissivity face are successively sprayed to part base solid surface
Layer；
S7, cleaning: the coating in non-spraying region is purged；
S8, inspection: defect inspection is carried out to coating surface, determines that coating layer thickness is met the requirements.
Further, in step s3, it is protected using non-spraying region of the high temperature gummed tape to part.
Further, in step s 4, using quartzy sand grains to piece surface carry out blasting treatment, granularity be 50 mesh~
115 mesh, in 0.4MPa, jet stream and piece surface angle are 70 °~80 ° for compressed air pressure control, distance controlling 100mm~
Between 120mm.
Further, in step s 5, part is preheated using plasma gun.
Further, in step s 5, part base solid temperature is 80 DEG C~120 DEG C after preheating.
Further, in step s 6, part base solid temperature is controlled by cooling device in spraying process and is no more than 200
℃。
In addition, the present invention also proposes a kind of high emissivity, lower thermal conductivity coating, which is prepared using the above method.
(3) beneficial effect
High emissivity proposed by the present invention, lower thermal conductivity coating and preparation method thereof, which is included in part base
Body surface face successively sprays CoNiCrAlY bottom, zirconium oxide transition zone and high emissivity surface layer, obtains high emissivity, lower thermal conductivity
Coating.
Compared with prior art, beneficial effects of the present invention are as follows:
1, using obtained high emissivity of the invention, lower thermal conductivity coating, coating layer thickness is structurally reasonable, can effectively avoid each
Because failing caused by thermal expansion coefficient difference between layer material；
2, using materials such as high-emissivity material (La-Ca-Cr-O), zirconium oxide transition zone (8YSZ), CoNiCrAlY bottoms
Combination, while slin emissivity can be improved, reduce high-temperature high-speed airflow to the heat transfer of matrix, thermal structure is effectively reduced
The thermal force of part.
Detailed description of the invention
Fig. 1 is high emissivity of the embodiment of the present invention, lower thermal conductivity coating production flow chart.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to tool of the invention
Body embodiment is described in further detail.
The present embodiment proposes a kind of in the high temperature alloy plate part (long 100mm, wide 100mm, thick 5mm) that material is GH4099
Surface prepares high emissivity, the preparation method of lower thermal conductivity coating, and process is as shown in Figure 1.The preparation method specifically include as
Lower step:
S1, preliminary examination: part outer surface impulse- free robustness, sharp edge, corrosion, no serious greasy dirt, scratch, damage, it is color-coded and
Other machinery impurity.
S2, cleaning: being brushed piece surface to be sprayed completely with compressed air, need to be with completely if there is dirt in part
Hairless cotton exposure to gasoline by surface contaminants wiped clean.
S3, protection: using non-spraying region of the high temperature gummed tape to part, (for spraying area, remaining position is protected for upper surface
Shield) it is protected.
S4, blast: using quartzy sand grains, granularity is 50 mesh~115 mesh, and compressed air pressure is controlled in 0.4MPa, jet stream
It is 70 °~80 ° with piece surface angle, distance controlling is between 100mm~120mm.It, will be to compressed air after the completion of blast
Sprayed surface brushes completely, and the part after blast is sprayed in 2h.
S5, preheating: before spraying, part is preheated one time with plasma gun, part base solid temperature is 80 DEG C after preheating
~120 DEG C.
S6, spraying: CoNiCrAlY bottom, zirconium oxide transition zone, high emissivity face are carried out by the spraying parameter of table 1
Layer spraying, spraying process control part base solid temperature by cooling device and are no more than 200 DEG C.It is measured using calibrator and applies thickness
Degree, and record.
1 plasma spraying high emissivity of table, lower thermal conductivity coating process parameter
S7, cleaning: removal high temperature gummed tape, and polishing removing is carried out to the coating in non-spraying region with sand paper or file.Behaviour
Do not allow that part base solid and coating are caused to damage when making.
The defects of S8, inspection: coating surface is continuous, uniform, is not allow for crackle, peels off；Coating layer thickness is met the requirements.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. the preparation method of a kind of high emissivity, lower thermal conductivity coating, which is characterized in that the preparation method is included in part base
Body surface face successively sprays CoNiCrAlY bottom, zirconium oxide transition zone and high emissivity surface layer, obtains high emissivity, lower thermal conductivity
Coating.
2. preparation method as described in claim 1, which is characterized in that the preparation method specifically comprises the following steps:
S1, preliminary examination: piece surface impulse- free robustness, corrosion, greasy dirt, is scratched, is damaged, color-coded and impurity sharp edge；
S2, cleaning: piece surface to be sprayed is brushed completely with compressed air；
S3, protection: the non-spraying region of part is protected；
S4, blast: blast processing is carried out to piece surface；
S5, preheating: part is preheated before spraying；
S6, spraying: CoNiCrAlY bottom, zirconium oxide transition zone and high emissivity surface layer are successively sprayed to part base solid surface；
S7, cleaning: the coating in non-spraying region is purged；
S8, inspection: defect inspection is carried out to coating surface, determines that coating layer thickness is met the requirements.
3. preparation method as described in claim 1, which is characterized in that in the step S3, using high temperature gummed tape to part
Non-spraying region protected.
4. preparation method as described in claim 1, which is characterized in that in the step S4, using quartzy sand grains to part
Surface carries out blasting treatment, and granularity is 50 mesh~115 mesh, and compressed air pressure control is pressed from both sides in 0.4MPa, jet stream and piece surface
Angle is 70 °~80 °, and distance controlling is between 100mm~120mm.
5. preparation method as described in claim 1, which is characterized in that in the step S5, using plasma gun to zero
Part is preheated.
6. preparation method as claimed in claim 5, which is characterized in that in the step S5, part base solid temperature after preheating
It is 80 DEG C~120 DEG C.
7. preparation method as described in claim 1, which is characterized in that in the step S6, by cold in spraying process
But device control part base solid temperature is no more than 200 DEG C.
8. a kind of high emissivity, lower thermal conductivity coating, which is characterized in that the coating uses method system described in any of the above embodiments
It is standby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841764.6A CN110468365A (en) | 2019-09-06 | 2019-09-06 | A kind of high emissivity, lower thermal conductivity coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841764.6A CN110468365A (en) | 2019-09-06 | 2019-09-06 | A kind of high emissivity, lower thermal conductivity coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN110468365A true CN110468365A (en) | 2019-11-19 |
Family
ID=68515091
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| CN201910841764.6A Pending CN110468365A (en) | 2019-09-06 | 2019-09-06 | A kind of high emissivity, lower thermal conductivity coating and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438434A (en) * | 2022-01-12 | 2022-05-06 | 北京理工大学 | Multilayer high-reflectivity heat insulation coating and preparation method thereof |
| CN116082039A (en) * | 2022-12-22 | 2023-05-09 | 哈尔滨工业大学 | Preparation method of non-equivalent ion doped high-emissivity low-thermal-conductivity functional composite ceramic or coating |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815927A (en) * | 2012-08-27 | 2012-12-12 | 哈尔滨工业大学 | Hexaaluminate high-emissivity thermal protection coating layer and preparation method thereof |
| CN104451526A (en) * | 2014-11-17 | 2015-03-25 | 北京理工大学 | Preparation method of high-emissivity ceramic coating |
| CN105369179A (en) * | 2015-11-20 | 2016-03-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method for compound zirconia high-temperature sealing coating |
| CN108118278A (en) * | 2016-11-29 | 2018-06-05 | 沈阳黎明航空发动机(集团)有限责任公司 | One kind is used for the low guide vane method for preparing heat barrier coating of IC10 alloys |
| CN109457210A (en) * | 2018-11-27 | 2019-03-12 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of high temperature resistant low emissivity coatings and preparation method thereof |
-
2019
- 2019-09-06 CN CN201910841764.6A patent/CN110468365A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815927A (en) * | 2012-08-27 | 2012-12-12 | 哈尔滨工业大学 | Hexaaluminate high-emissivity thermal protection coating layer and preparation method thereof |
| CN104451526A (en) * | 2014-11-17 | 2015-03-25 | 北京理工大学 | Preparation method of high-emissivity ceramic coating |
| CN105369179A (en) * | 2015-11-20 | 2016-03-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method for compound zirconia high-temperature sealing coating |
| CN108118278A (en) * | 2016-11-29 | 2018-06-05 | 沈阳黎明航空发动机(集团)有限责任公司 | One kind is used for the low guide vane method for preparing heat barrier coating of IC10 alloys |
| CN109457210A (en) * | 2018-11-27 | 2019-03-12 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of high temperature resistant low emissivity coatings and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 常云鹏: "高温高发射率涂层的制备及性能研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438434A (en) * | 2022-01-12 | 2022-05-06 | 北京理工大学 | Multilayer high-reflectivity heat insulation coating and preparation method thereof |
| CN116082039A (en) * | 2022-12-22 | 2023-05-09 | 哈尔滨工业大学 | Preparation method of non-equivalent ion doped high-emissivity low-thermal-conductivity functional composite ceramic or coating |
| CN116082039B (en) * | 2022-12-22 | 2023-10-20 | 哈尔滨工业大学 | Preparation method of non-equivalent ion doped high-emissivity low-thermal-conductivity functional composite ceramic or coating |
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Application publication date: 20191119 |