CN103266295B - A kind of thermal barrier coating by laser surface modifying method - Google Patents
A kind of thermal barrier coating by laser surface modifying method Download PDFInfo
- Publication number
- CN103266295B CN103266295B CN201310193147.2A CN201310193147A CN103266295B CN 103266295 B CN103266295 B CN 103266295B CN 201310193147 A CN201310193147 A CN 201310193147A CN 103266295 B CN103266295 B CN 103266295B
- Authority
- CN
- China
- Prior art keywords
- thermal barrier
- barrier coating
- laser
- cell cube
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Abstract
A kind of thermal barrier coating by laser surface modifying method, first cleans and sandblasting the surface of matrix; Then the thermal barrier coating of thermospray state is prepared on the surface of matrix; Then design by the shape of the laser modified cell cube of dowel pin structure of preparation, size, arrangement rule and distribution density in thermal barrier coating; Then by the machined parameters regulating laser apparatus that designs a model; Then carry out laser modified to thermal barrier coating; Finally stress relief annealing process is carried out to the thermal barrier coating after laser modified.The present invention arranges the method for the structure-reinforced cell cube of dowel pin that is discontinuous, that disperse in thermal barrier coating owing to have employed, make the heat coating that rises can produce the feature of soft or hard alternately change, can produce " pinning effect " again, so both slow down the crack tip stress concentration of coating, reduce the cracking breakout of coating, drastically increase again the bonding strength of each painting interlayer, extend the thermal fatigue life of thermal barrier coating, and improve coating texture, improve the density of coating.
Description
Technical field
The invention belongs to thermal barrier coating preparation and modification technical field, specifically relate to a kind of thermal barrier coating by laser surface modifying method with dowel pin constitutional features.
Background technology
Thermal barrier coating is by surperficial at matrix alloy for high temperature resistant, high heat insulation coated materials, to improve matrix alloy high-temperature resistance, reduces a kind of thermal protection technology of its surface temperature.Thermal barrier coating not only has broad application prospects in the field such as naval vessel, the energy, develops the requisite gordian technique of aircraft engine of future generation especially simultaneously.Along with aircraft engine develops to high thrust-weight ratio, the design inlet temperature of engine improves constantly, be used alone high-temperature structural material can not meet design requirement, adopt Thermal Barrier Coating Technologies to be increase substantially the practicable method of aircraft engine working temperature at present.
The typical airline thermal barrier coating of practical application is mostly bilayer structure, is namely divided into the ceramic layer on top layer and middle tack coat.Wherein, ceramic layer material is generally the partially stabilized zirconium white of 7%-8% yttrium oxide, and prepared by the method for air plasma spraying or electro beam physics vapour deposition, the thermal conductivity of ceramic layer is lower, mainly plays heat-blocking action.It is tack coat between ceramic layer and matrix, the general purpose material of this layer is MCrAlY at present, wherein M represents the mixture of Ni, Co or Ni and Co, tack coat is prepared by the method for low-voltage plasma spraying or hypersonic flame spraying, its function is the thermal expansion mismatch improved between matrix and ceramic layer, prevents matrix by high temperature oxidation and corrosion.
Although thermal barrier coating has been widely used in the hot-end component of engine at present, its early stage spalling failure problem is very serious, and the work-ing life of thermal barrier coating also needs further raising.Research shows: the tissue defects of coat inside, the larger internal stress that under Thermal Load, coat inside produces, the problems such as the formation of coating interface thermal growth oxide and growth and the intrinsic coating binding force difference of hot-spraying techniques are the principal elements affecting thermal barrier coating work-ing life.Although about the material of thermal barrier coating, structure and the research of preparation technology aspect are a lot, the early stage spalling failure problem of thermal barrier coating still exists.In recent years, in raising thermal barrier coating performance with in the life-span, adopt laser and thermospray compounding technology to cause the concern of domestic and international expert gradually, and become study hotspot.But current thermal barrier coating by laser surface modifying method also also exists some drawbacks: on the one hand, coating density and bonding strength can be improved to the overall laser remolten of thermal barrier coating, but also will produce tack coat and the problem such as ceramic layer mutual diffusion and dilution; On the other hand, top layer laser remolten is carried out to ceramic layer and can reduce cracking breakout, prevent the bonded layer dilution of ceramic layer, but inevitably in ceramic layer, introduce new interface, produce larger unrelieved stress, and this method to raising ceramic layer and tack coat bonding strength meaningless.Therefore, the laser modified technology of thermal barrier coating in the urgent need to obtaining innovation and breakthrough in methodology and structure design thought.
Summary of the invention
The object of the invention is to for above-mentioned existing problems and deficiency, a kind of thermal barrier coating by laser surface modifying method that can significantly improve thermal barrier coating performance and used life with dowel pin constitutional features is provided.
Technical scheme of the present invention is achieved in that
Thermal barrier coating by laser surface modifying method of the present invention, is characterized in comprising the steps:
A, routinely processing sequence clean and sandblasting on the surface to matrix;
B, prepare the thermal barrier coating of thermospray state on the surface of matrix, this thermal barrier coating comprises ceramic layer and tack coat, during making, is first make tack coat on the surface of matrix, then makes ceramic layer on the surface of tack coat;
C, to be designed being about to the shape of the laser modified cell cube of dowel pin structure of preparation, size, arrangement rule and distribution density in thermal barrier coating by computer and design software;
D, regulate the machined parameters of laser apparatus by designing a model;
E, carry out laser modified to thermal barrier coating, make in thermal barrier coating, to be formed with the laser modified cell cube of dowel pin structure by step C setting;
F, stress relief annealing process is carried out to the thermal barrier coating after laser modified.
Wherein, the laser modified cell cube of above-mentioned dowel pin structure is for being inverted spherical cell cube, the exposed surface of the spherical cell cube of this inversion is circular, and the circular surface diameter of the spherical cell cube of this inversion is 0.5mm ~ 2.5mm, and the height of the spherical cell cube of this inversion is 210 μm ~ 440 μm.
The laser modified cell cube of dowel pin structure in above-mentioned thermal barrier coating is arranged to equidistant parallel arrangement or equidistantly staggered, the Distances Between Neighboring Edge Points of adjacent two laser modified cell cubes of dowel pin structure is 1mm ~ 4mm, and the total surface area of the laser modified cell cubes of dowel pin structure all in thermal barrier coating accounts for 10% ~ 60% of thermal barrier coating surface-area.
Above-mentioned laser apparatus employing rated output is the Nd:YAG solid pulse laser of 500W ~ 1000W, and the electric current of this laser apparatus is 100A ~ 300A, and pwm value is 3ms ~ 10ms, and frequency values is 1 ~ 10Hz.
In above-mentioned steps E, carrying out laser modified to thermal barrier coating is adopt manually to control laser input pulse quantity, and the laser input pulse quantity preparing the laser modified cell cube of each dowel pin structure is 1 ~ 6.
The stress relief annealing process of above-mentioned thermal barrier coating carries out in vacuum heat treatment furnace, and Heating temperature is 600 DEG C ~ 700 DEG C, and soaking time is 1h ~ 2h, and furnace cooling.
Above-mentioned ceramic layer adopts the method for air plasma spraying to make, and the thickness of ceramic layer is 150 μm ~ 350 μm.
Above-mentioned tack coat adopts the method for low-voltage plasma spraying or hypersonic flame spraying to make, and the thickness of tack coat is 50 μm ~ 100 μm.
The present invention arranges the laser surface modification method of the structure-reinforced cell cube of dowel pin in thermal barrier coating owing to have employed, the laser modified cell cube of " timber " type that is discontinuous, dispersion can be formed in the breadth wise dimension of thermal barrier coating, thus generation has the reinforced structure that soft or hard replaces variation characteristic, so both can reduce and lax coated laser modification stress, reduce cracking breakout, can realize again between opposing coat layer and longitudinal crack expansion, slow down the object of crack tip stress concentration, simultaneously, through ceramic layer and tack coat can be formed on the vertical scale of thermal barrier coating until close to the laser modified cell cube of " nail wedge " shape of matrix by the method, the reinforced structure that generation has " pinning effect ", the through ceramic layer of laser modified cell cube and tack coat, so both can form local metallurgical binding at the two interface, anchoring strength of coating is enable to improve more than 40%, destroy the continuity of interface thermal growth oxide, the thermal fatigue life of thermal barrier coating is enable to improve 1-4 doubly, greatly can improve coating texture again, the columanar structure being different from spraying state is defined in ceramic layer, make Coating Surface Roughness be improved significantly, improve coating density, effectively eliminate the pore that thermospray state is residual, the defect such as to be mingled with.
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing explanation
Fig. 1 is the cross-sectional morphology figure of thermospray state thermal barrier coating in the embodiment of the present invention one.
Fig. 2 is the laser surface modification outside drawing of thermal barrier coating in the embodiment of the present invention one.
Fig. 3 is the surface topography map of the laser modified cell cube of dowel pin structure of thermal barrier coating in the embodiment of the present invention one.
Fig. 4 is columanar structure's schematic diagram of the laser modified cell cube of the embodiment of the present invention one king-pile pin structure.
Embodiment
Embodiment one:
First, technical process is cleaned and sandblasting GH4169 superalloy matrix routinely, then, the thermal barrier coating of thermospray state is prepared on the surface of matrix, because this thermal barrier coating is made up of ceramic layer and tack coat, during making, it is the NiCoCrAlYTa tack coat first adopting supersonic spray coating to prepare thickness about 60 μm, adopt air plasma spraying to prepare 7% yttrium oxide partial stabilization zirconium oxide ceramic layer of thickness about 200 μm again, and the cross-sectional morphology of the thermal barrier coating of this thermospray state as shown in Figure 1, then, the laser modified cell cube of dowel pin structure is designed by computer and design software, the laser modified cell cube of this dowel pin structure is for being inverted spherical cell cube, the exposed surface of the spherical cell cube of this inversion is circular, the circular surface diameter of the spherical cell cube of this inversion is 2mm, the height of the spherical cell cube of this inversion is 230 μm, and the arrangement rule of being inverted the setting of spherical cell cube is equidistant parallel arrangement, its arrangement rule as shown in Figure 2, and adjacent two Distances Between Neighboring Edge Points being inverted spherical cell cube are 2mm, the total surface area of the laser modified cell cubes of dowel pin structure all in thermal barrier coating accounts for 25% of thermal barrier coating surface-area, then, the Nd:YAG pulsed solid stale laser of rated output 600W is adopted to carry out laser surface modification to thermal barrier coating, namely in thermal barrier coating, produce the required laser modified cell cube of dowel pin structure by designing a model, and laser diode current input 200A, pwm value is 6ms, frequency is 7Hz, and be adopt manual control mode to make the laser modified cell cube of each dowel pin structure of processing only input 2 bundle of pulsed laser, from Fig. 3, can clearly be seen that the surface topography of the laser modified cell cube of single dowel pin structure be prepared in thermal barrier coating, finally, the thermal barrier coating after laser modified is put into vacuum heat treatment furnace, heat 700 DEG C, insulation 1h, takes out after furnace cooling.Owing to defining through ceramic layer and tack coat on the vertical scale of thermal barrier coating until close to the laser modified cell cube of " nail wedge " shape of matrix, the reinforced structure that generation has " pinning effect ", and in ceramic layer, define the columanar structure being different from spraying state, this columanar structure as shown in Figure 4, thus make Coating Surface Roughness be improved significantly, improve coating density, the defect such as effectively eliminate the residual pore of thermospray state, be mingled with.
Embodiment two:
First, technical process is cleaned and sandblasting GH4169 superalloy matrix routinely, the thermal barrier coating of thermospray state is prepared on the surface of matrix, because this thermal barrier coating is made up of ceramic layer and tack coat, during making, be the NiCoCrAlYTa tack coat first adopting low-voltage plasma spraying to prepare thickness about 100 μm, then adopt air plasma spraying to prepare 7% yttrium oxide partial stabilization zirconium oxide ceramic layer of thickness about 300 μm, then, the laser modified cell cube of dowel pin structure is designed by computer and design software, the design of the laser modified cell cube of this dowel pin structure is completed by computer and design software, the laser modified cell cube of this dowel pin structure is for being inverted spherical cell cube, the exposed surface of the spherical cell cube of this inversion is circular, the circular surface diameter of the spherical cell cube of this inversion is 1.8mm, the height of the spherical cell cube of this inversion is 320 μm, and the arrangement rule of being inverted the setting of spherical cell cube is equidistantly staggered, and adjacent two Distances Between Neighboring Edge Points being inverted spherical cell cube are 2mm, the total surface area of the laser modified cell cubes of dowel pin structure all in thermal barrier coating accounts for 20% of thermal barrier coating surface-area, then, the Nd:YAG pulsed solid stale laser of rated output 800W is adopted to carry out laser surface modification to thermal barrier coating, namely in thermal barrier coating, produce the required laser modified cell cube of dowel pin structure by designing a model, and laser diode current input 220A, pwm value is 7ms, frequency is 10Hz, and is adopt manual control mode to make each laser modified cell cube of processing only input 3 bundle of pulsed laser, finally, the thermal barrier coating after laser modified is put into vacuum heat treatment furnace, heat 650 DEG C, insulation 1h, takes out after furnace cooling.
The present invention is described by embodiment, but the present invention is not construed as limiting, with reference to description of the invention, other changes of the disclosed embodiments, as the professional person for this area easily expects, such change should belong within the scope of the claims in the present invention restriction.
Claims (5)
1. a thermal barrier coating by laser surface modifying method, is characterized in that comprising the steps:
A, routinely processing sequence clean and sandblasting on the surface to matrix;
B, prepare the thermal barrier coating of thermospray state on the surface of matrix, this thermal barrier coating comprises ceramic layer and tack coat, during making, is first make tack coat on the surface of matrix, then makes ceramic layer on the surface of tack coat;
C, to be designed being about to the shape of the laser modified cell cube of dowel pin structure of preparation, size, arrangement rule and distribution density in thermal barrier coating by computer and design software, the laser modified cell cube of described dowel pin structure is for being inverted spherical cell cube, the exposed surface of the spherical cell cube of this inversion is circular, the circular surface diameter of the spherical cell cube of this inversion is 0.5mm ~ 2.5mm, the height of the spherical cell cube of this inversion is 210 μm ~ 440 μm, and the laser modified cell cube of dowel pin structure in described thermal barrier coating is arranged to equidistant parallel arrangement or equidistantly staggered, the Distances Between Neighboring Edge Points of adjacent two laser modified cell cubes of dowel pin structure is 1mm ~ 4mm, and the total surface area of the laser modified cell cubes of dowel pin structure all in thermal barrier coating accounts for 10% ~ 60% of thermal barrier coating surface-area,
D, regulate the machined parameters of laser apparatus by designing a model;
E, carry out laser modified to thermal barrier coating, make in thermal barrier coating, to be formed with the laser modified cell cube of dowel pin structure by step C setting, and to carry out laser modified to thermal barrier coating be adopt manually to control laser input pulse quantity, the laser input pulse quantity preparing the laser modified cell cube of each dowel pin structure is 1 ~ 6;
F, stress relief annealing process is carried out to the thermal barrier coating after laser modified.
2. thermal barrier coating by laser surface modifying method according to claim 1, it is characterized in that above-mentioned laser apparatus employing rated output is the Nd:YAG solid pulse laser of 500W ~ 1000W, the electric current of this laser apparatus is 100A ~ 300A, and pwm value is 3ms ~ 10ms, and frequency values is 1 ~ 10Hz.
3. thermal barrier coating by laser surface modifying method according to claim 1, it is characterized in that the stress relief annealing process of above-mentioned thermal barrier coating carries out in vacuum heat treatment furnace, Heating temperature is 600 DEG C ~ 700 DEG C, and soaking time is 1h ~ 2h, and furnace cooling.
4. thermal barrier coating by laser surface modifying method according to claim 1, it is characterized in that above-mentioned ceramic layer adopts the method for air plasma spraying to make, and the thickness of ceramic layer is 150 μm ~ 350 μm.
5. thermal barrier coating by laser surface modifying method according to claim 1, it is characterized in that above-mentioned tack coat adopts the method for low-voltage plasma spraying or hypersonic flame spraying to make, and the thickness of tack coat is 50 μm ~ 100 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310193147.2A CN103266295B (en) | 2013-05-23 | 2013-05-23 | A kind of thermal barrier coating by laser surface modifying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310193147.2A CN103266295B (en) | 2013-05-23 | 2013-05-23 | A kind of thermal barrier coating by laser surface modifying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103266295A CN103266295A (en) | 2013-08-28 |
| CN103266295B true CN103266295B (en) | 2015-10-07 |
Family
ID=49009956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310193147.2A Active CN103266295B (en) | 2013-05-23 | 2013-05-23 | A kind of thermal barrier coating by laser surface modifying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103266295B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108220953B (en) * | 2017-12-27 | 2019-12-31 | 中国石油大学(华东) | Laser surface treatment method for improving heat corrosion resistance of thermal barrier coating |
| CN108411242B (en) * | 2018-01-31 | 2020-12-18 | 广东省新材料研究所 | Thermal barrier coating with particle erosion resistant surface layer and preparation method thereof |
| CN110387520B (en) * | 2019-09-04 | 2021-02-26 | 吉林大学 | Crack-stopping anti-stripping bionic dam structure gradient coating and preparation method thereof |
| CN111099893B (en) * | 2019-12-04 | 2022-03-22 | 天津大学 | Method for improving melting resistance CMAS corrosion of thermal barrier coating by laser surface treatment |
| CN111334747B (en) * | 2020-02-17 | 2021-11-23 | 江苏大学 | Surface texture of thermal barrier coating and processing method thereof |
| CN112126889B (en) * | 2020-08-21 | 2021-10-01 | 中国地质大学（武汉） | Method for optimizing thermal barrier coating stability by constructing bionic structure through 3D printing |
| CN112011755B (en) * | 2020-08-27 | 2022-05-24 | 西安石油大学 | Longitudinal hole forming method of layered thermal barrier coating based on reverse deformation and thermal barrier coating |
| US11828196B2 (en) | 2022-01-28 | 2023-11-28 | Rtx Corporation | Gas turbine engine article with serpentine groove for coating interlock |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3234209B2 (en) * | 2000-03-30 | 2001-12-04 | 川崎重工業株式会社 | Manufacturing method of sliding member |
| JP2002069607A (en) * | 2000-06-16 | 2002-03-08 | Mitsubishi Heavy Ind Ltd | Coating material for shielding heat, its production method, gas-turbine member applied with the same material, and gas turbine |
| JP2012180549A (en) * | 2011-02-28 | 2012-09-20 | Mitsubishi Heavy Ind Ltd | Method for partially repairing thermal barrier coating |
| CN102994938A (en) * | 2012-12-04 | 2013-03-27 | 西安交通大学 | Novel laser processing method for surface of atmospheric plasma sprayed thermal barrier coating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519778B (en) * | 2008-02-26 | 2011-07-20 | 宝山钢铁股份有限公司 | Laser cladding method for strengthening surface of piercing point |
-
2013
- 2013-05-23 CN CN201310193147.2A patent/CN103266295B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3234209B2 (en) * | 2000-03-30 | 2001-12-04 | 川崎重工業株式会社 | Manufacturing method of sliding member |
| JP2002069607A (en) * | 2000-06-16 | 2002-03-08 | Mitsubishi Heavy Ind Ltd | Coating material for shielding heat, its production method, gas-turbine member applied with the same material, and gas turbine |
| JP2012180549A (en) * | 2011-02-28 | 2012-09-20 | Mitsubishi Heavy Ind Ltd | Method for partially repairing thermal barrier coating |
| CN102994938A (en) * | 2012-12-04 | 2013-03-27 | 西安交通大学 | Novel laser processing method for surface of atmospheric plasma sprayed thermal barrier coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103266295A (en) | 2013-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103266295B (en) | A kind of thermal barrier coating by laser surface modifying method | |
| CN104451672B (en) | A kind of laser powder deposition process of regulation and control thermal barrier coating interface topography | |
| CN108699916A (en) | Ceramic matrix composite turbine machine component with classification fiber reinforced ceramic-base bottom | |
| CN109706418A (en) | A kind of double ceramic layer structure 8YSZ thermal barrier coatings and preparation method | |
| CN105132908A (en) | Gas turbine blade thermal barrier coating bonding layer and preparation method thereof | |
| CN105463453B (en) | A kind of thermal barrier coating of interface stability and preparation method thereof | |
| Dhineshkumar et al. | Enhancement of strain tolerance of functionally graded LaTi2Al9O19 thermal barrier coating through ultra-short pulse based laser texturing | |
| CN112126889B (en) | Method for optimizing thermal barrier coating stability by constructing bionic structure through 3D printing | |
| BR112013022772B1 (en) | METHOD FOR PRODUCING A THERMAL BARRIER IN A MULTI-LAYER PROTECTION SYSTEM ON A PART OF METAL AND PART EQUIPPED WITH SUCH A PROTECTION SYSTEM | |
| CN104593767A (en) | Method for preparing thermal barrier coating bonding layer by utilizing laser powder deposition technology | |
| CN102766837B (en) | Novel thermal barrier coating | |
| CN102317494A (en) | Method for producing a heat barrier covering a metal substrate made of a superalloy, and thermomechanical part resulting from said production method | |
| CN108754387B (en) | High-temperature-resistant low-heat-conduction long-life double-layer dual-mode structure thermal barrier coating and preparation process thereof | |
| CN110387520B (en) | Crack-stopping anti-stripping bionic dam structure gradient coating and preparation method thereof | |
| CN113046702A (en) | Preparation method for improving oxidation resistance of bonding layer of thermal barrier coating | |
| CN102994938B (en) | Novel laser processing method for surface of atmospheric plasma sprayed thermal barrier coating | |
| CN104451675A (en) | Preparation method of ceramic sealing coating with high thermal shock resistance | |
| JP2013181192A (en) | Method for producing thermal barrier coating material | |
| CN109778102A (en) | A kind of multilayered structure selfreparing thermal barrier coating and preparation method thereof | |
| CN103469144A (en) | High-porosity thermal barrier coating with isometric crystal structure | |
| Wang et al. | Analysis on thermal stress of optimized functionally graded coatings during thermal shock based on finite element simulation | |
| Tang et al. | Surface texture of substrates prepared by femtosecond laser for improving the thermal cycle life of TBCs | |
| Zhang et al. | Thermal shock resistance of thermal barrier coatings modified by selective laser remelting and alloying techniques | |
| CN105463382B (en) | A kind of coating and preparation method thereof improving TiAl alloy oxidation drag | |
| JP6394927B2 (en) | Thermal barrier coating and turbine component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171207 Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee after: GUANGDONG INSTITUTE OF NEW MATERIALS Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGZHOU Research Institute OF NON FERROUS METALS |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGDONG INSTITUTE OF NEW MATERIALS |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221103 Address after: Second Floor, Building 77, Accelerator Project, Lihe Technology Industry Center, No. 33, Information Avenue South, Shishan Town, Nanhai District, Foshan, Guangdong 528200 Patentee after: Foshan Taoyuan Advanced Manufacturing Research Institute Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Institute of new materials, Guangdong Academy of Sciences |
|
| TR01 | Transfer of patent right |