CN110786698A - Container containing composite coating - Google Patents
Container containing composite coating Download PDFInfo
- Publication number
- CN110786698A CN110786698A CN201911101507.5A CN201911101507A CN110786698A CN 110786698 A CN110786698 A CN 110786698A CN 201911101507 A CN201911101507 A CN 201911101507A CN 110786698 A CN110786698 A CN 110786698A
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- Prior art keywords
- container
- composite coating
- micro powder
- ceramic
- copper
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
- A47G19/22—Drinking vessels or saucers used for table service
- A47G19/2205—Drinking glasses or vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention relates to the technical field of coatings, in particular to a container containing a composite coating, which is selected from a pot, a cooker and a cup, and comprises a base material and the composite coating, wherein the base material is arranged outside the container, the composite coating is arranged inside the container, the base material is a metal base material, the composite coating is composed of at least one of silver and copper and ceramic, and mixed powder composed of at least one of copper micro powder and silver micro powder and ceramic micro powder is sprayed on the surface of the base material through a cold spraying process. The composite coating integrates the comprehensive properties of copper, silver and ceramic, and provides the container with the characteristics of wear resistance, antibiosis and good heat preservation.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a container comprising a composite coating.
Background
Cold spray, also known as cold gas dynamic spray, is a novel spray technology which makes full use of the aerodynamic principle, and is discovered by the soviet union scientists to attract the attention of developed countries such as the united states, the japan, the germany and the law, and a great deal of research is carried out, so that the preparation of pure metals, alloys and composite coatings is successfully realized at present.
The working principle of cold spraying is that when spraying, solid particles are pushed by compressed gas to impact a base material at a high speed through a Raoult nozzle, so that the particles generate violent plastic deformation below the melting point temperature, and a coating is formed. Cold spray is suitable for deposition of materials that are sensitive to oxidation (e.g., aluminum, copper, titanium, magnesium) and phase change (e.g., carbide composites), and lower temperatures are also suitable for substrates that are sensitive to heat, such as magnesium alloys, glass, polymers, and the like.
The ceramic material has high hardness and low plastic deformation capacity, and the ceramic coating is difficult to prepare by directly utilizing cold spraying, so that on one hand, high-speed ceramic particles are easy to break when impacting on the surface of a matrix, and more cracks are generated in the coating; on the other hand, the bonding strength between the particles is not enough, the deposition efficiency of the particles is low, and the porosity of the ceramic coating is also large.
Disclosure of Invention
The object of the present invention is to overcome the drawbacks of the prior art and to provide a container comprising a composite coating.
The invention adopts the following technical scheme:
the container comprises a base material and a composite coating, wherein the base material is arranged outside the container, the composite coating is arranged inside the container, the base material is a metal base material, the composite coating is composed of at least one of silver and copper and ceramic, and the composite coating is prepared by spraying the composite coating on the surface of the base material through a cold spraying process.
In a preferred scheme, the thickness of the composite coating is 100 mu m-1 mm.
In a preferred embodiment, the container is selected from one of a pot, a cooker, and a cup. More preferably, the cup is a thermos cup.
In a preferred embodiment, the substrate is selected from one of iron, stainless steel, aluminum, and aluminum alloy.
In a preferable scheme, the cold spraying process is that at least one of copper micro powder and silver micro powder and ceramic micro powder form mixed powder, nitrogen or helium which is accelerated by a Raoult nozzle and heated to 400-600 ℃ is used as working carrier gas, and the high-speed working carrier gas accelerates the mixed powder to be sprayed out from a spray gun to collide with the base material, so that the composite coating is formed.
In a more preferred embodiment, the average particle size of the copper fine powder is 1 to 50 μm, the average particle size of the silver fine powder is 1 to 50 μm, and the average particle size of the ceramic fine powder is 1 to 50 μm.
In a more preferable scheme, the copper micro powder and the ceramic micro powder form mixed powder, and the weight ratio of the copper micro powder to the ceramic micro powder is 1: 3-8; in another more preferable scheme, the silver micro powder and the ceramic micro powder form mixed powder, and the weight ratio of the silver micro powder to the ceramic micro powder is 1: 3-8; in another more preferable scheme, the mixed powder consists of copper micro powder, silver micro powder and ceramic micro powder, and the weight ratio of the copper micro powder to the silver micro powder to the ceramic micro powder is 1:0.05-0.15: 3-8.
In a more preferable scheme, the ceramic micro powder is selected from one or more of silicon carbide, silicon nitride, silicon dioxide, aluminum oxide, aluminum nitride, titanium dioxide, zirconium oxide and zirconium nitride, or is formed by firing some of the silicon carbide, the silicon nitride, the silicon dioxide, the aluminum oxide, the aluminum nitride, the titanium dioxide, the zirconium oxide and the zirconium nitride.
More preferably, the flow rate of the working carrier gas is 0.5 to 1.5m3/min。
In a more preferable scheme, the spraying pressure of the working carrier sprayed from the spray gun is 1.2-3 MPa.
The invention has the beneficial effects that:
(1) the obtained composite coating integrates the characteristics of ceramic, silver and copper, and has the characteristics of wear resistance, high hardness, bacteria resistance and good heat preservation. The microhardness (HV0.2) of the composite coating exceeds 75, and the wear rate is as low as 3.5 multiplied by 10-4mm3·m-1·N-1。
(2) By adopting the cold spraying process, the copper micro powder and the silver micro powder have larger plastic deformation, play a role similar to a ceramic micro powder binder, and improve the adhesion property of the ceramic micro powder to the base material and the binding force between the ceramic micro powder, so that the composite coating has better adhesion to the base material. The bonding strength of the composite coating to the iron and stainless steel base materials exceeds 40MPa, and the bonding strength to the aluminum alloy base material exceeds 50 MPa.
Drawings
Figure 1 is a schematic view of a container comprising a composite coating according to the invention,
wherein 1-base material and 2-composite coating.
Detailed Description
The technical solution of the present invention is further illustrated and described by the following detailed description.
Example 1
According to the schematic diagram shown in FIG. 1, a mixed powder of copper micro powder with an average particle size of 10 μm, silver micro powder with an average particle size of 18 μm and alumina micro powder with an average particle size of 25 μm is prepared according to a weight ratio of 1:0.1:5, nitrogen gas heated to 450-550 ℃ is accelerated by a Raoult nozzle to serve as working carrier gas, and the flow rate of the working carrier gas is 0.8m3And/min, accelerating the mixed powder to be sprayed out of the spray gun by high-speed working carrier gas, wherein the spraying pressure is 2.0MPa, and the mixed powder collides with the inner surface of the aluminum alloy cookware to form a composite coating with the average thickness of 300 mu m, so that the aluminum alloy cookware with the inner surface coated with the silver/copper/aluminum oxide composite coating is obtained. The microhardness (HV0.2) of the composite coating is 78.4, and the wear rate is 3.5 multiplied by 10-4mm3·m-1·N-1The bonding strength to the aluminum alloy exceeds 50MPa, and fracture occurs between the composite coatings when the bonding strength is tested.
Example 2
According to the schematic diagram shown in FIG. 1, a mixed powder is composed of copper micro powder with an average particle size of 18 μm, silver micro powder with an average particle size of 30 μm and silicon carbide micro powder with an average particle size of 35 μm according to a weight ratio of 1:0.09:6, helium gas heated to 500-600 ℃ is accelerated by a Raoult nozzle and used as working carrier gas, and the flow rate of the working carrier gas is 1.5m3And/min, accelerating the mixed powder to be sprayed out of the spray gun by high-speed working carrier gas, wherein the spraying pressure is 1.8MPa, and the mixed powder collides with the inner surface of the iron pan to form a composite coating with the average thickness of 700 mu m, so that the iron pan with the inner surface coated with the silver/copper/silicon carbide composite coating is obtained. The microhardness (HV0.2) of the composite coating is 124.7, and the wear rate is 6.1 multiplied by 10-5mm3·m-1·N-1The bonding strength to iron was 45 MPa.
Example 3
According to the schematic diagram shown in FIG. 1, the copper fine powder with an average particle size of 10 μm, the silver fine powder with an average particle size of 25 μm and the zirconium oxide fine powder with an average particle size of 33 μm are mixedThe weight ratio of the mixed powder to the mixed powder is 1:0.13:8, helium which is accelerated by a Raoult nozzle and heated to the temperature of 500-600 ℃ is taken as working carrier gas, and the flow rate of the working carrier gas is 1.2m3And/min, accelerating the mixed powder to be sprayed out of the spray gun by high-speed working carrier gas, wherein the spraying pressure is 1.5MPa, and the mixed powder collides with the inner surface of the stainless steel vacuum cup to form a composite coating with the average thickness of 500 mu m, so that the vacuum cup with the inner surface coated with the silver/copper/zirconium oxide composite coating is obtained. The microhardness (HV0.2) of the composite coating is 82.5, and the wear rate is 8.7 multiplied by 10-5mm3·m-1·N-1The bonding strength to stainless steel was 48 MPa.
Example 4
According to the schematic diagram shown in FIG. 1, a mixed powder is composed of copper micro powder with an average particle size of 10 μm and zirconia micro powder with an average particle size of 33 μm according to a weight ratio of 1:5, helium gas heated to 500-600 ℃ is accelerated by a Raoult nozzle and is used as working carrier gas, and the flow rate of the working carrier gas is 1.2m3And/min, accelerating the mixed powder to be sprayed out of the spray gun by high-speed working carrier gas, wherein the spraying pressure is 1.6MPa, and the mixed powder collides with the inner surface of the stainless steel vacuum cup to form a composite coating with the average thickness of 400 mu m, so that the vacuum cup with the copper/zirconium oxide composite coating coated on the inner surface is obtained. The microhardness (HV0.2) of the composite coating is 77.8, and the wear rate is 9.5 multiplied by 10-5mm3·m-1·N-1The bonding strength to stainless steel was 47 MPa.
Example 5
According to the schematic diagram shown in FIG. 1, a mixed powder is composed of silver micro powder with an average particle size of 30 μm and silicon carbide micro powder with an average particle size of 35 μm according to a weight ratio of 1:6, helium gas heated to 500-600 ℃ is accelerated by a Raoult nozzle and is used as working carrier gas, and the flow velocity of the working carrier gas is 1.5m3And/min, accelerating the mixed powder to be sprayed out of the spray gun by high-speed working carrier gas, wherein the spraying pressure is 2.5MPa, and the mixed powder collides with the inner surface of the iron pan to form a composite coating with the average thickness of 800 mu m, so that the iron pan with the inner surface coated with the silver/silicon carbide composite coating is obtained. The microhardness (HV0.2) of the composite coating is 118.3, and the wear rate is 6.6 multiplied by 10-5mm3·m-1·N-1The bonding strength to iron was 46 MPa.
The foregoing has shown and described the fundamental principles, major features and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are merely preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and that equivalent changes and modifications made within the scope of the present invention and the specification should be covered thereby. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A container comprising a composite coating comprising a substrate and a composite coating, the substrate being disposed on the exterior of the container and the composite coating being disposed on the interior of the container, the substrate being a metal substrate, characterized in that: the composite coating is prepared by spraying at least one of silver and copper and ceramic on the surface of a base material through a cold spraying process.
2. The container of claim 1, wherein: the thickness of the composite coating is 100 mu m-1 mm.
3. A container according to claim 1 or 2, wherein: the container is selected from one of a pot, a cooker and a cup.
4. A container according to claim 1 or 2, wherein: the substrate is selected from one of iron, stainless steel, aluminum and aluminum alloy.
5. A container according to claim 1 or 2, wherein: the cold spraying process is characterized in that at least one of copper micro powder and silver micro powder and ceramic micro powder form mixed powder, nitrogen or helium which is heated to 400-600 ℃ and accelerated by a Raoult nozzle is used as working carrier gas, and the mixed powder is accelerated to be sprayed out from a spray gun by the high-speed working carrier gas and collides with the base material to form the composite coating.
6. The container of claim 5, wherein: the average particle size of the copper micro powder is 1-50 mu m, the average particle size of the silver micro powder is 1-50 mu m, and the average particle size of the ceramic micro powder is 1-50 mu m.
7. The container of claim 5, wherein: the ceramic micro powder is selected from one or more of silicon carbide, silicon nitride, silicon dioxide, aluminum oxide, aluminum nitride, titanium dioxide, zirconium oxide and zirconium nitride, or is formed by firing the plurality of the silicon carbide, the silicon nitride, the silicon dioxide, the aluminum oxide, the aluminum nitride, the titanium dioxide, the zirconium oxide and the zirconium nitride.
8. The container of claim 5, wherein: the flow rate of the working carrier gas is 0.5-1.5m3/min。
9. The container of claim 5, wherein: the spraying pressure of the working carrier sprayed out from the spray gun is 1.2-3 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101507.5A CN110786698A (en) | 2019-11-12 | 2019-11-12 | Container containing composite coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101507.5A CN110786698A (en) | 2019-11-12 | 2019-11-12 | Container containing composite coating |
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|---|---|
| CN110786698A true CN110786698A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911101507.5A Pending CN110786698A (en) | 2019-11-12 | 2019-11-12 | Container containing composite coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114231878A (en) * | 2021-12-17 | 2022-03-25 | 武汉苏泊尔炊具有限公司 | Spray coating material, preparation method thereof, coating and cooker comprising coating |
| CN115044851A (en) * | 2022-07-19 | 2022-09-13 | 宁波冠天下家庭用品有限公司 | Method for coating ceramic coating on surface of metal substrate |
| CN115896670A (en) * | 2021-09-30 | 2023-04-04 | 银微子有限公司 | Antimicrobial articles comprising silver copper microparticles |
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| CN108727932A (en) * | 2018-06-21 | 2018-11-02 | 江苏田字格新材料科技有限公司 | A kind of preparation method of plasma sprayed ceramic composite coating for ceramic pan |
| CN108998790A (en) * | 2018-08-21 | 2018-12-14 | 中国船舶重工集团公司第七二五研究所 | A kind of aluminum-based boron carbide preparation method of composite coating |
| CN109321803A (en) * | 2018-11-30 | 2019-02-12 | 苏州艾默特材料技术有限公司 | A kind of heating element with porous ceramics coating |
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Patent Citations (7)
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| CN105734553A (en) * | 2016-04-07 | 2016-07-06 | 天津德瑞云科技有限公司 | Preparation method for sliver coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115896670A (en) * | 2021-09-30 | 2023-04-04 | 银微子有限公司 | Antimicrobial articles comprising silver copper microparticles |
| CN114231878A (en) * | 2021-12-17 | 2022-03-25 | 武汉苏泊尔炊具有限公司 | Spray coating material, preparation method thereof, coating and cooker comprising coating |
| CN115044851A (en) * | 2022-07-19 | 2022-09-13 | 宁波冠天下家庭用品有限公司 | Method for coating ceramic coating on surface of metal substrate |
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Application publication date: 20200214 |