CN113275559A - Cage type generating device for powder with oxide shell layer coated core-shell structure - Google Patents
Cage type generating device for powder with oxide shell layer coated core-shell structure Download PDFInfo
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- CN113275559A CN113275559A CN202110554611.0A CN202110554611A CN113275559A CN 113275559 A CN113275559 A CN 113275559A CN 202110554611 A CN202110554611 A CN 202110554611A CN 113275559 A CN113275559 A CN 113275559A
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- oxygen
- chuck
- shell
- cage type
- coated core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
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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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
Abstract
The invention discloses a cage type generating device for powder with an oxide shell layer coated core-shell structure, which relates to the technical field of metallurgical processes and comprises a chuck and an oxygen spraying element, wherein a plurality of oxygen outlets are formed in the side wall of the oxygen spraying element and used for discharging oxygen respectively, the oxygen spraying element is fixed on the chuck, a spray pipe is fixed in the middle of the chuck and used for being communicated with a plasma spray gun, the oxygen outlets are arranged outside the spray pipe, and the spray pipe can spray plasma carrying the powder between the oxygen outlets. The cage type generating device for the oxide shell layer coated core-shell structure powder can improve the quality of the oxide core-shell coated core-shell structure powder, so that the core-shell bonding strength is improved, and the coating quality is ensured.
Description
Technical Field
The invention relates to the technical field of metallurgical processes, in particular to a cage type generating device for powder with an oxide shell layer coated core-shell structure.
Background
The oxide-coated core-shell structure powder material is used as an important raw material in a powder metallurgy process, such as special-shaped piece sintering forming, special functional coating preparation, 3D printing and the like, and the particle size range of the oxide-coated core-shell structure powder material is from several micrometers to hundreds of micrometers. The current main shell coating methods comprise sputtering, mechanical mixing and the like, and have the problems of uneven thickness, excessively low core-shell bonding strength, poor core-shell matching property and the like.
The direct current plasma has the characteristics of ultrahigh temperature and high speed, and is the core of a plurality of advanced technologies and methods. Due to the characteristics of high temperature, high activity, high conductivity and the like, the direct current plasma is generated by inert gas (Ar, He, N2) or reducing gas (H2). The whole jet flow field is in an inert or reducing environment, so that how to generate oxide shell layer coated core-shell structure powder by using direct current plasma becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a cage type generating device for powder with an oxide shell layer coated core-shell structure, which is used for solving the problems in the prior art and improving the quality of the powder with the oxide core-shell coated core-shell structure, thereby improving the core-shell bonding strength and ensuring the coating quality.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a cage type generating device for powder with an oxide shell layer coated core-shell structure, which comprises a chuck and an oxygen spraying element, wherein a plurality of oxygen outlets are formed in the side wall of the oxygen spraying element and are respectively used for discharging oxygen, the oxygen spraying element is fixed on the chuck, a spray pipe is fixed in the middle of the chuck and is used for communicating a plasma spray gun, each oxygen outlet is arranged outside the spray pipe, and the spray pipe can spray plasma carrying the powder to the space between the oxygen outlets.
Preferably, the oxygen injection element comprises a plurality of air outlet columns, the air outlet columns are circumferentially fixed around the central shaft of the chuck, a reaction cavity is defined between the air outlet columns, the air outlet columns are used for being communicated with an external oxygen supply device, and the oxygen outlet holes are formed in the air outlet columns.
Preferably, the chuck is hollow, the gas outlet columns are communicated with the inside of the chuck, the spray pipe is not communicated with the inside of the chuck, and the chuck is used for being communicated with an external oxygen supply device.
Preferably, the chuck is provided with a plurality of oxygen tubes on the end face of one end far away from the gas outlet column, and the oxygen tubes are used for being communicated with an external oxygen supply device.
Preferably, a plurality of said oxygenation tubes are fixed circumferentially and uniformly around a central axis of said cartridge.
Preferably, one end of each gas outlet column is fixed on the chuck, the other end of each gas outlet column is plugged, a plurality of oxygen outlet holes are formed in the side wall of one side, close to the central shaft of the chuck, of each gas outlet column, the oxygen outlet holes are uniformly arranged along the axial direction of the gas outlet columns, and the oxygen outlet holes are used for introducing oxygen into the reaction cavity.
Preferably, the gas outlet column is an arc-shaped pipe, and the middle part of the gas outlet column is bent towards the direction far away from the central shaft of the chuck.
Preferably, the nozzle is arranged coaxially with the chuck.
Preferably, the number of the gas outlet columns is eight.
Preferably, a plurality of supporting legs are fixed on one side of the chuck far away from the oxygen spraying element, and the supporting legs are used for supporting the chuck.
Compared with the prior art, the invention has the following technical effects:
the invention provides a cage type generating device for an oxide shell layer to coat core-shell structure powder, a plurality of oxygen outlets are arranged on the side wall of an oxygen spraying element, each oxygen outlet is respectively used for discharging oxygen to facilitate the formation of oxygen atmosphere, the oxygen spraying element is fixed on a chuck, a spray pipe is fixed in the middle of the chuck and is used for being communicated with a plasma spray gun, each oxygen outlet is arranged outside the spray pipe, the spray pipe can spray plasma carrying powder between the oxygen outlets, so that the oxygen surrounds the plasma, the plasma and the oxygen interact to induce the oxygen to be instantaneously ionized to form oxygen plasma with strong oxidizing property, thereby forming oxidizing atmosphere of the plasma, facilitating the realization of transient reaction of powder materials and the environment atmosphere, realizing the rapid discrete modification of powder components and structure, generating self-grown oxide shell layer to coat core-shell structure powder, so that the powder material and even parts can obtain the performance which is difficult to obtain by the traditional process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a cross-sectional view of a cage-type generating apparatus for an oxide shell layer coated core-shell structure powder provided by the present invention;
FIG. 2 is a top view of a cage-type generator for an oxide shell layer coated core-shell powder provided by the present invention;
in the figure: the device comprises a cage type generating device for 100-oxide shell layer coated core-shell structure powder, a chuck 1, a spray pipe 11, an oxygen filling pipe 12, an air outlet column 2, an oxygen outlet hole 21 and a support leg 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a cage type generating device for powder with an oxide shell layer coated core-shell structure, which aims to solve the technical problem of low core-shell bonding strength caused by poor quality of the existing powder with an oxide shell layer coated core-shell structure.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-2, the present invention provides a cage-type generating apparatus 100 for generating self-growing oxide shell-coated core-shell powder, which comprises a chuck 1 and an oxygen spraying component, wherein a plurality of oxygen outlets 21 are formed on a side wall of the oxygen spraying component, each oxygen outlet 21 is used for discharging oxygen so as to form an oxygen atmosphere, the oxygen spraying component is fixed on the chuck 1, a nozzle 11 is formed in the middle of the chuck 1, the nozzle 11 penetrates through the nozzle 11 in the thickness direction of the chuck 1, the nozzle 11 is used for communicating a plasma torch, each oxygen outlet 21 is arranged outside the nozzle 11, the nozzle 11 can spray plasma carrying powder between each oxygen outlet 21, so that the oxygen surrounds the plasma, the plasma interacts with the oxygen to induce the oxygen to instantaneously ionize the oxygen to form oxygen plasma with strong oxidizing property, therefore, an oxidizing atmosphere of plasma is formed, transient reaction of powder materials and an ambient atmosphere is conveniently realized, rapid discrete modification of powder components and structures is realized, and the self-growing oxide shell layer is generated to coat the core-shell structure powder, so that the powder materials and even parts can obtain the performance which is difficult to obtain by the traditional process.
Specifically, the oxygen spraying element includes a plurality of air outlet columns 2, and a plurality of air outlet columns 2 are fixed around chuck 1's center pin circumference, enclose into the reaction chamber between each air outlet column 2, and air outlet column 2 is used for communicateing outside oxygen supply device to let in oxygen to the reaction intracavity, thereby make air outlet column 2 let in oxygen in the reaction chamber's of reaction chamber's periphery in the reaction intracavity, form the oxygen atmosphere, go out oxygen hole 21 and set up on each air outlet column 2.
Chuck 1 is used for communicateing outside apparatus of oxygen supply, the inside cavity of chuck 1, and each gas column 2 all communicates with the chuck 1 is inside for oxygen gets into chuck 1 earlier, and lets in respectively in each gas column 2 after 1 inner chambers of chuck disperse, homogeneity when improving oxygen and discharging guarantees with the mixed effect of plasma, spray tube 11 and 1 inside incommunication of chuck, prevents that oxygen from discharging from spray tube 11, influences the mixture of oxygen and plasma.
Chuck 1 has seted up a plurality of oxygen tubes 12 of oxygenating on the terminal surface of keeping away from the one end of gas column 2, and it is used for the outside apparatus for oxygen tube 12 of oxygenating, and a plurality of oxygen tubes 12 are fixed around the even circumference of the center pin of chuck 1 for oxygen gets into the 1 inner chamber of chuck through oxygenating tube 12, and evenly let in each gas column 2 of giving vent to anger after 1 inner chamber dispersion of chuck, improve the discharge effect of oxygen, and then improve the emergence effect of plasma and oxygen.
The one end of gas outlet column 2 is fixed on chuck 1, the other end shutoff, and all seted up a plurality of oxygen holes 21 on the lateral wall of the one side that is close to chuck 1 center pin on each gas outlet column 2, each oxygen hole 21 is along the axial align to grid of gas outlet column 2, oxygen hole 21 is used for letting in oxygen to the reaction intracavity, thereby make plasma jet flow through chuck 1 middle part discharge, and to keeping away from the one end of chuck 1 on being close to gas outlet column 2 and remove, oxygen is discharged to the direction perpendicular to through plasma jet flow from plasma jet flow's periphery, make plasma jet flow and oxygen intensive mixing contact in order to form oxygen plasma, lure the oxygen plasma that generates and this kind of surface of powder of this kind to take place transient autoxidation simultaneously, generate from growing oxide shell cladding nuclear shell structure powder.
Go out the air column 2 and be the arc pipe, and go out the middle part of air column 2 and to keeping away from the direction bending of 1 center pin of chuck, each oxygen outlet 21 all sets up towards the center of reaction chamber to make oxygen all spray towards the center of reaction chamber, plasma efflux and oxygen are at reaction intracavity intensive mixing, with the generation oxygen plasma.
The spray pipe 11 and the chuck 1 are coaxially arranged, so that the plasma jet is positioned in the center of the reaction cavity, the distances between the gas outlet columns 2 and the plasma jet are equal, and the mixing uniformity of oxygen and the plasma jet is improved.
The number of the gas outlet columns 2 is eight, but the number of the gas outlet columns 2 in the cage type generating device 100 for the core-shell structure powder coated by the oxide shell layer provided by the invention is not limited to eight, as long as uniform gas distribution of oxygen is ensured, so that the oxygen can be fully mixed with plasma.
One side of keeping away from oxygen injection component on the chuck 1 is fixed with a plurality of landing leg 3, and landing leg 3 is used for supporting chuck 1 to when making the use, utilize landing leg 3 to produce device 100 with the cage type of whole oxide shell cladding nucleocapsid structure powder and prop up, be convenient for be connected with outside apparatus for oxygen supply, plasma spray gun, can guarantee simultaneously to go out gas column 2 and make and place towards the upper end, guarantee to react and normally go on.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (10)
1. A cage type generating device for powder with an oxide shell layer coated with a core-shell structure is characterized in that: including chuck and oxygen spraying component, a plurality of oxygen holes have been seted up on oxygen spraying component's the lateral wall, and each oxygen hole is used for discharging oxygen respectively, oxygen spraying component fixes on the chuck, just the chuck middle part is fixed with the spray tube, the spray tube is used for intercommunication plasma spray gun, each oxygen hole sets up the outside of spray tube, the spray tube can be to each plasma that carries the powder is sprayed between the oxygen hole.
2. The cage type generator of oxide shell-coated core-shell powder according to claim 1, wherein: the oxygen spraying element comprises a plurality of air outlet columns, the air outlet columns are circumferentially fixed around a central shaft of the chuck, a reaction cavity is formed between the air outlet columns, the air outlet columns are used for being communicated with an external oxygen supply device, and the oxygen outlet holes are formed in the air outlet columns.
3. The cage type generator of oxide shell-coated core-shell powder according to claim 2, wherein: the chuck is inside cavity, and each the gas outlet column all with the inside intercommunication of chuck, the spray tube with the inside nonconnection of chuck, the chuck is used for communicateing outside oxygen suppliment device.
4. The cage type generator of oxide shell coated core-shell structured powder according to claim 3, characterized in that: the chuck is keeping away from a plurality of oxygen tubes have been seted up on the terminal surface of the one end of gas column of giving vent to anger, oxygen tube is used for communicateing outside oxygen supply unit.
5. The cage type generator of oxide shell coated core-shell structured powder according to claim 4, characterized in that: a plurality of the oxygenation tubes are uniformly circumferentially fixed about a central axis of the cartridge.
6. The cage type generator of oxide shell coated core-shell structured powder according to claim 3, characterized in that: one end of each gas outlet column is fixed on the chuck, the other end of each gas outlet column is blocked, a plurality of oxygen outlet holes are formed in the side wall of one side, close to the central shaft of the chuck, of each gas outlet column, the oxygen outlet holes are evenly arranged along the axial direction of the gas outlet columns, and the oxygen outlet holes are used for introducing oxygen into the reaction cavity.
7. The cage type generator of oxide shell coated core-shell structured powder according to claim 3, characterized in that: the gas outlet column is an arc-shaped tube, and the middle part of the gas outlet column is bent towards the direction far away from the central shaft of the chuck.
8. The cage type generator of oxide shell-coated core-shell powder according to claim 1, wherein: the spray pipe and the chuck are coaxially arranged.
9. The cage type generator of oxide shell-coated core-shell powder according to claim 2, wherein: eight air outlet columns are arranged.
10. The cage type generator of oxide shell-coated core-shell powder according to claim 1, wherein: and a plurality of supporting legs are fixed on one side of the chuck, which is far away from the oxygen spraying element, and the supporting legs are used for supporting the chuck.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110554611.0A CN113275559B (en) | 2021-05-21 | 2021-05-21 | Cage type generating device for powder with oxide shell layer coated core-shell structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110554611.0A CN113275559B (en) | 2021-05-21 | 2021-05-21 | Cage type generating device for powder with oxide shell layer coated core-shell structure |
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| CN113275559A true CN113275559A (en) | 2021-08-20 |
| CN113275559B CN113275559B (en) | 2022-05-10 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090317557A1 (en) * | 2008-06-20 | 2009-12-24 | Toyota Motor Engineering & Manufacturing North America, Inc. | Process To Make Core-Shell Structured Nanoparticles |
| CN109485091A (en) * | 2018-12-07 | 2019-03-19 | 昆明理工大学 | A kind of preparation method of the stannic oxide superfines of size tunable |
| CN110172668A (en) * | 2019-05-23 | 2019-08-27 | 钢铁研究总院 | A kind of preparation method and its nano particle of metal/oxide Core-shell Structure Nanoparticles |
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- 2021-05-21 CN CN202110554611.0A patent/CN113275559B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090317557A1 (en) * | 2008-06-20 | 2009-12-24 | Toyota Motor Engineering & Manufacturing North America, Inc. | Process To Make Core-Shell Structured Nanoparticles |
| CN109485091A (en) * | 2018-12-07 | 2019-03-19 | 昆明理工大学 | A kind of preparation method of the stannic oxide superfines of size tunable |
| CN110172668A (en) * | 2019-05-23 | 2019-08-27 | 钢铁研究总院 | A kind of preparation method and its nano particle of metal/oxide Core-shell Structure Nanoparticles |
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| CN113275559B (en) | 2022-05-10 |
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