CN110742463A - Titanium vacuum thermos cup and composite coating structure of inner container thereof - Google Patents

Titanium vacuum thermos cup and composite coating structure of inner container thereof Download PDF

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CN110742463A
CN110742463A CN201910872158.0A CN201910872158A CN110742463A CN 110742463 A CN110742463 A CN 110742463A CN 201910872158 A CN201910872158 A CN 201910872158A CN 110742463 A CN110742463 A CN 110742463A
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coating
titanium
inner container
radiation
layer
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吴海荣
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TAIZHOU TAICHENG ELECTRONIC TECHNOLOGY Co Ltd
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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
    • A47G19/2288—Drinking vessels or saucers used for table service with means for keeping liquid cool or hot
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
    • C23C28/3455—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
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Abstract

The invention relates to a titanium vacuum cup and a composite coating structure of an inner container of the titanium vacuum cup, and belongs to the technical field of titanium vacuum cup manufacturing. In order to solve the problem of poor heat preservation performance of the existing titanium vacuum thermos cup, a composite coating structure of the titanium vacuum thermos cup and an inner container thereof is provided, the titanium vacuum thermos cup comprises a shell and an inner container, a vacuum cavity is arranged between the shell and the inner container, the inner container is made of pure titanium or titanium alloy materials, the outer side surface of the inner container is covered with a composite coating, the composite coating comprises a plurality of layers of ceramic heat insulation coatings I and a radiation protection metal layer I with a low radiation coefficient, the ceramic heat insulation coatings I cover the outer side surface of the inner container, the radiation protection metal layer I covers the surface of the outermost ceramic heat insulation coating, and the material of each layer of ceramic heat insulation coating I is independently selected from ZrO2Or La2Zr2O7. The invention can effectively reduce heat energy transferred by heat conduction and radiation, thereby effectively realizingThe heat energy is exchanged integrally, and the high-efficiency heat preservation effect is achieved.

Description

Titanium vacuum thermos cup and composite coating structure of inner container thereof
Technical Field
The invention relates to a titanium vacuum cup and a composite coating structure of an inner container of the titanium vacuum cup, and belongs to the technical field of titanium vacuum cup manufacturing.
Background
Because the metallic titanium has excellent biocompatibility and is harmless to human bodies, particularly heavy metals cannot be separated out at high temperature. Therefore, titanium has become one of the best materials for people's daily necessities. At present, the titanium material is applied to the liner of the vacuum cup in an ideal mode, but the characteristics of the titanium material determine that the titanium vacuum cup has greater difference and greater difficulty in the manufacturing process than the stainless steel vacuum cup, and mainly show formability, weldability, surface treatment, heat transfer performance and the like. In the process of researching and manufacturing the titanium double-layer vacuum thermal cup, the titanium material is found to have a larger thermal radiation coefficient and a higher thermal conductivity coefficient, so that the titanium vacuum thermal cup cannot have excellent thermal insulation performance like a stainless steel vacuum thermal cup. In order to improve the heat preservation performance of the titanium vacuum heat preservation cup, a structure with designed heating heat preservation performance is adopted in a vacuum cavity in the prior art, however, the structure is not beneficial to manufacturing and production, and the cost is relatively higher. Although the heat preservation performance is improved by coating or depositing a heat insulation coating on the surface of the inner container of the heat preservation cup at present, most of the titanium vacuum heat preservation cups are coated on the surface of stainless steel materials, a vacuum cavity is usually designed between the outer shell and the inner container at present, so that the vacuum cavity has the characteristic of reducing heat radiation by a certain vacuum degree, and the heat preservation performance is improved. For example, in the constant temperature thermos cup disclosed in chinese patent application (publication No. CN205094082U), the outer surface of the inner container is coated with a thermal insulation coating, and a heating element is disposed between the outer side surface of the lower end of the inner container and the thermal insulation coating, and a heating control structure is disposed in the formed sealed cavity, however, this structure is hardly suitable for a vacuum thermos cup using a titanium material, and the structure of the additional heating control structure is too complicated to be used in practice, and in addition, it only ensures the constant temperature performance by heating, and does not really solve the thermal insulation and heat radiation reduction performance of the inner container. Also, as disclosed in the chinese patent (No. CN209047833U), a pure titanium vacuum cup includes an outer cup body and an inner container, a cavity is formed between the outer cup body and the inner container, the bottom of the outer cup body has an air outlet hole communicated with the cavity, a reinforcing rib is distributed on the cup bottom of the outer cup body around the air outlet hole, and the air outlet hole is sealed by a titanium solder paste. Therefore, the invention aims at the problem, and hopes to improve the coating of the outer surface of the liner of the vacuum thermos cup through additional technical innovation, so as to solve the problems of large heat conductivity coefficient and quick radiation of the liner made of titanium material and improve the heat insulation performance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a titanium vacuum thermos cup and a composite coating structure of an inner container thereof, and solves the problems of improving heat insulation, reducing heat radiation and heat conduction and realizing high heat insulation performance.
One of the purposes of the invention is realized by the following technical scheme that the inner container of the titanium vacuum thermos cup is made of pure titanium or titanium alloy materials, the outer side surface of the inner container is covered with the composite coating, the composite coating comprises a plurality of layers of ceramic heat-insulating coatings I and a radiation-proof metal layer I with low emissivity, the ceramic heat-insulating coatings I cover the outer side surface of the inner container, the radiation-proof metal layer I covers the surface of the outermost ceramic heat-insulating coating, and the materials of each layer of ceramic heat-insulating coating I are independently selected from ZrO2Or La2Zr2O7。
The heat of the liquid in the vacuum cup is usually exchanged through an inner container made of pure titanium or titanium alloy material which is in direct contact with the liquid, mainly through heat conduction and heat radiation, and in terms of heat conduction, as can be known from the fourier law, the heat flow density q passing through a unit area in a unit time can be represented by the following formula:
q＝λS(t1-t2)
wherein λ is a thermal conductivity coefficient, S is a heat transfer area, t1Is the temperature of the surface of the inner container, t2Is the temperature of the outer surface of the inner container.
Heat transfer area and temperature difference (t) of the heat-retaining cup1-t2) In a certain case, the heat radiation can be reduced only by lowering λ in order to reduce the heat flux density, but λ is also a certain value in the case where the material of the inner container is titanium metal. Therefore, through a great deal of research, in order to change the thermal conductivity of the material, the ceramic heat insulation coating is covered on the outer side surface of the inner containerLayer one, and the material of each layer of ceramic thermal insulation coating layer one is independently selected from ZrO2Or La2Zr2O7The coating is formed on the outer side surface of the titanium inner container through the specific ceramic heat insulation material, multi-layer different heat exchange modes can be formed, the overall heat conductivity coefficient is reduced, the heat flow density is reduced, the heat transfer quantity is reduced, the phenomenon that liquid heat in the vacuum cup is exchanged too fast through the heat conduction mode is avoided, the heat preservation purpose is achieved, the outer side surface of the inner container can be covered through the deposition mode for covering the heat insulation material, the outer side surface of the inner container can also be covered through the coating mode, the surface of the inner container is preferably covered through the deposition mode, and the bonding force is better. The materials for each ceramic thermal insulation coating layer are independently selected from ZrO2Or La2Zr2O7The material, more particularly the material of one of each ceramic thermal barrier coating may be the same, e.g. ZrO for each layer2Or La2Zr2O7Ceramic thermal barrier coating of material one, or possibly ZrO2Ceramic thermal barrier coating or La2Zr2O7The ceramic thermal insulation coatings I are formed by mutually spacing or alternately depositing or coating;，on the other hand, the liner made of pure titanium or titanium alloy material and the ceramic material as the coating layer have another important function of having thermal contact resistance on the surface of the pure titanium or titanium alloy material in contact with the ceramic material coating layer or forming thermal contact resistance between layers of the coating layer, namely, the temperature jump can occur at the contact interface between the liner and the ceramic heat-insulating coating layer or the contact interface between the layers, and by utilizing the phenomenon, the interface temperature jump effect is generated, the outer surface temperature of the liner is effectively reduced, and the high heat-preservation performance of the titanium liner as the liner of the titanium vacuum thermos cup is realized. Meanwhile, when the titanium vacuum heat insulation cup is used as the material of the inner container surface of the titanium vacuum heat insulation cup, heat radiation must be considered, the emissivity of the titanium material of the inner container is 0.2-0.8, the emissivity of the first ceramic heat insulation coating is greater than 0.7, the reduction of the heat radiation cannot be met by singly depositing the first ceramic heat insulation coating, and a great deal of research and selection are carried out on the ceramic heat insulation coatingThe surface of the first heat-insulating coating is covered with a first radiation-proof metal layer with a low radiation coefficient (which can be formed in a deposition or coating mode) again, so that a composite coating structure of the first ceramic heat-insulating coating and the first radiation-proof metal layer with the low radiation coefficient is formed, heat energy transferred through radiation can be effectively reduced, and accordingly, the phenomenon that the whole heat energy of liquid in the inner container is exchanged and is cooled too fast is effectively avoided, and effective heat-insulating performance is achieved.
In the inner container composite coating structure of the titanium vacuum thermos cup, the number of the first ceramic heat insulation coating layers is 1-10. Through the multilayer structure characteristics that the ceramic heat-insulating coating is formed by multiple depositions during deposition or coating, the interlayer contact thermal resistance can be formed more effectively, a plurality of temperature mutation effects are generated, the heat exchange is avoided better, the more effective heat-insulating effect is achieved, and the number of layers is preferably more than 2. More preferably, the number of the first ceramic thermal insulation coating layers is 5-7. The overall total thickness of the ceramic heat-insulating coating I can be ensured, the thermal contact resistance effect generated among a plurality of layers can be generated more effectively, a plurality of temperature sudden changes are generated, and the heat-insulating effect is achieved. Furthermore, as another embodiment, when a multilayer ceramic thermal insulation coating is formed, the thickness between each layer is preferably changed, which is more beneficial to improving the thermal insulation effect and effectively improving the thermal insulation performance. Of course, it is also possible to use a coating of equal thickness for each layer of ceramic thermal barrier coating, which is advantageous for the working operation to be carried out. In a further preferred embodiment, the total thickness of the first ceramic thermal insulation coating is 1 to 30 μm. More effective heat preservation and insulation performance, improved heat preservation effect, and preferably the total thickness of the ceramic heat insulation coating is 5-25 mu m.
In the inner container composite coating structure of the titanium vacuum thermos cup, the material of the radiation-proof metal layer I is preferably a material with a lower radiation coefficient, so that a coating with the radiation coefficient less than 0.1 is formed, the heat energy transferred by radiation is effectively reduced, and the heat insulation performance is improved. Preferably, the material of the first radiation-proof metal layer is selected from pure nickel, pure tantalum, pure platinum, pure chromium or their respective alloys. The ceramic heat-insulating coating has low radiation coefficient, is beneficial to reducing radiation transmission, and more importantly, the materials can effectively cover the surface of the ceramic heat-insulating coating I, have better binding capacity, avoid the phenomena of falling off and the like, and prolong the service life of the whole body. The above-mentioned materials are preferably formed on the surface of the ceramic thermal barrier coating layer by deposition, and for the above-mentioned respective alloys, it can be specifically the low emissivity radiation-proof metal layer formed by nickel alloy, tantalum alloy, platinum alloy or chromium alloy. In a further preferred embodiment, the thickness of the first radiation-proof metal layer is 0.1 to 30 μm.
In the composite coating structure of the inner container of the titanium vacuum thermos cup, preferably, the surface roughness Ra of the first radiation-proof metal layer is not more than 0.2 μm. The surface is smooth, the mirror surface effect is improved, and the capability of reflecting heat radiation is better.
The second purpose of the invention is realized by the following technical scheme that the titanium vacuum thermos cup comprises a shell and an inner container made of pure titanium or titanium alloy, a vacuum cavity is arranged between the shell and the inner container, the outer side surface of the inner container is covered with a plurality of first ceramic heat insulation coatings, the surface of the outermost first ceramic heat insulation coating is covered with a first radiation-proof metal layer with low emissivity, and the materials of each first ceramic heat insulation coating are independently selected from ZrO2Or La2Zr2O7。
The vacuum heat insulation cup can effectively realize the heat insulation performance by improving the composite coating on the outer side surface of the inner container, and meanwhile, the radiation protection metal layer I with low radiation coefficient is further deposited on the surface of the ceramic heat insulation coating I by considering the vacuum cavity between the inner container and the shell of the vacuum cup, so that the transmission of radiation heat is reduced, the effects of heat insulation and radiation reduction are effectively realized, and the high-efficiency heat insulation performance is achieved. More specifically, the outer side surface of the liner (corresponding to the surface of the liner on the side of the vacuum cavity) is covered with a first ceramic heat-insulating coating, and the material of the first ceramic heat-insulating coating is selected from ZrO2Or La2Zr2O7The specific ceramic heat insulating material can form different layers on the surface of the titanium inner containerThe heat mode reduces the overall heat conductivity coefficient, thereby equivalently reducing the heat flow density, reducing the heat transfer quantity, avoiding the over-fast exchange of the liquid heat in the vacuum cup through the heat conduction mode, and realizing the purpose of heat preservation. On the other hand, aiming at the liner made of pure titanium or titanium alloy material, and the ceramic material is used as the coating, the other important function is that a contact thermal resistance can be formed on the contact surface of the pure titanium or titanium alloy material and the ceramic material coating or the contact thermal resistance can be formed between the layers of the coating, and the temperature mutation can be generated at the contact interface between the liner and the ceramic heat-insulating coating or the interface between the layers. Meanwhile, when the composite coating is used as an inner container material of a titanium vacuum thermos cup, heat radiation must be considered, the emissivity of the titanium material of the inner container is 0.2-0.8, the emissivity of the first ceramic heat insulation coating is greater than 0.7, the reduction of the heat radiation by singly depositing the first ceramic heat insulation coating is insufficient, and after a great deal of research, the fact that the first radiation-proof metal layer with low emissivity is deposited on the surface of the first ceramic heat insulation coating is found, so that the composite coating structure of the first ceramic heat insulation coating and the first radiation-proof metal layer with low emissivity is formed, the heat energy transmitted through radiation can be effectively reduced, the heat transfer is effectively reduced by effectively avoiding the exchange of the whole heat energy, and the efficient heat preservation effect is achieved.
In the titanium vacuum thermos cup, the number of the first ceramic heat insulation coating layers is preferably 1-10. The method can effectively form interlayer thermal contact resistance, generate a plurality of temperature mutation effects, better avoid heat exchange, achieve more effective heat insulation performance, and optimally enable the number of layers to be more than 2.
In the titanium vacuum thermos cup, the material of the first radiation-proof metal layer is preferably selected from pure nickel, pure tantalum, pure platinum, pure chromium or an alloy form thereof. The ceramic heat-insulating coating has the performance of low emissivity, can be more effectively covered on the surface of the ceramic heat-insulating coating, effectively reduces the radiation heat transfer and ensures the performance of binding force, and further improves the heat-insulating performance, and is preferably covered on the surface of the ceramic heat-insulating coating in a deposition mode. More preferably, the thickness of the radiation-proof metal layer is 0.1 to 30 μm.
In the titanium vacuum thermos cup, the shell is preferably made of stainless steel, pure titanium or a titanium alloy material. As a further preferable mode, the inner surface of the shell is covered with a plurality of layers of second ceramic thermal insulation coatings and a second radiation-proof metal layer with a low radiation coefficient, the second ceramic thermal insulation coatings cover the inner surface of the shell, the second radiation-proof metal layer covers the second outermost ceramic thermal insulation coatings, and the materials of the second ceramic thermal insulation coatings are respectively and independently selected from ZrO2Or La2Zr2O7. The inner surface of the shell is equivalent to the surface opposite to the outer surface of the inner container, the composite coating covers the inner surface of the shell, so that the internal heat loss can be further reduced, the influence of external heat conduction and radiation on the temperature of liquid in the inner container can be better avoided, and the double heat insulation performance is improved.
In summary, compared with the prior art, the invention has the following advantages:
1. the invention adopts ZrO to deposit on the outer side surface of the liner made of pure titanium or titanium alloy material2Or La2Zr2O7The ceramic heat insulation coating layer is made of a material, so that different heat exchange modes among multiple layers can be formed, the overall heat conductivity coefficient is reduced, the heat flow density is reduced, the heat transfer quantity is reduced, and the phenomenon that liquid heat in the vacuum cup is exchanged in a heat conduction mode too fast is avoided; meanwhile, the radiation-proof metal layer I with the low radiation coefficient is deposited on the surface of the ceramic heat-insulating coating I, so that a composite coating structure between the ceramic heat-insulating coating I and the radiation-proof metal layer I with the low radiation coefficient is formed, the heat energy transmitted through radiation can be effectively reduced, the whole heat energy exchange is effectively realized, and the efficient heat preservation effect is achieved.
2. Have composite coating through the inboard surface at the shell again, the inside calorific loss of reduction that can be further, the influence of the liquid temperature in can also better avoiding outside heat-conduction and spoke heat to the inner bag has dual improvement heat retaining performance.
Drawings
FIG. 1 is a schematic view of the titanium vacuum cup of the present invention.
FIG. 2 is an enlarged schematic view of the composite coating structure on the surface of the liner shown in FIG. 1.
FIG. 3 is a schematic view showing the thermal density analysis of the titanium vacuum cup according to the present invention without the composite coating deposited on the surface of the inner container.
FIG. 4 is a schematic view showing the thermal density analysis of the composite coating deposited on the surface of the inner container of the titanium vacuum cup according to the present invention.
FIG. 5 is an enlarged view of the composite coating structure on the inner surface of the housing at B in FIG. 1.
In the figure, 1, a housing; 11. a second ceramic heat-insulating coating; 12. a second radiation-proof metal layer; 2. an inner container; 21. a first ceramic heat-insulating coating; 22. a first radiation-proof metal layer; 3. a vacuum chamber.
Detailed Description
The technical solutions of the present invention will be further specifically described below with reference to specific examples and drawings, but the present invention is not limited to these examples.
Referring to fig. 1 and 2, the inner container 2 of the titanium vacuum cup is made of pure titanium, and more importantly, the outer side surface of the inner container 2 of the titanium vacuum cup is deposited with a composite coating, the outer side surface can also be referred to as an outer surface, and the surface of the inner side of the inner container 2 contacting with boiled water is referred to as an inner surface, preferably, the composite coating is deposited on the outer side surface of the whole inner container 2, including the side wall surface and the bottom surface of the outer side of the inner container 2, the composite coating includes a plurality of ceramic thermal insulation coatings one 21 and a radiation-proof metal layer one 22 with low emissivity, the ceramic thermal insulation coatings one 21 is deposited on the outer side surface of the inner container 2, the outer side surface is the inner surface relative to the inner cavity of the inner container 2, and the radiation-proof metal layer one 22 is deposited on the surface of the ceramic thermal insulation coating one 21 on the outermost layer, the material of each ceramic thermal insulation coating layer I21 is independently selected from ZrO2Or La2Zr2O7. That is, when the ceramic thermal barrier coating-21 is multi-layered, the material of the ceramic thermal barrier coating-21 in each layer can be selected according to the actual requirement, for example, each layer can be ZrO2Material, or both La2Zr2O7Material, optionally ZrO2Coating La of material2Zr2O7The coating of material is deposited at intervals. The deposition method can be conventional in the art, and plasma evaporation deposition can be used. As another embodiment, the coating can be formed by coating slurry on the surface and baking. The material of the titanium inner container can also be a titanium inner container made of titanium alloy material.
For the qualitative description of the heat insulation performance of the ceramic thermal insulation coating layer 21 by depositing the ceramic thermal insulation coating layer 21 on the outer surface of the liner made of the titanium material and depositing the radiation-proof metal layer 22 with the low emissivity on the surface of the liner, a multi-layer flat plate heat conduction formula and the structural analysis shown in fig. 3 and 4 (fig. 3 and 4 are specifically analyzed in a flat plate shape) can be specifically combined, and the heat density of the multi-layer flat plate heat conduction formula is as follows:
q＝(t1-t3)/((δ1/λ1)+(δ2/λ2)) (1)
shown in connection with FIG. 4, where t1Is the temperature of the inner surface of the inner container 2, t3The temperature of the surface of the ceramic thermal insulation coating-21, delta, of the outer surface of the inner container 21、δ2The thickness of the inner container 2 made of titanium material and the thickness, lambda, of the first ceramic heat-insulating coating 211、λ2The thermal conductivity coefficients of the inner container 2 and the first ceramic thermal insulation coating 21 are respectively. In addition, t in FIG. 42The temperature of the outer surface of the inner container 2 is equivalent to the temperature of the outer surface of the inner container when the ceramic thermal insulation coating layer I21 is not considered to be arranged.
From the above equation, it can be seen that in (t)1-t3) And delta1/λ1At a certain condition, make delta2/λ2If the heat flux density q is increased, a decrease in the heat flux density q can be achieved. Therefore, the invention deposits the ceramic partition on the outer surface of the inner container 2The first hot coating 21 can effectively reduce the heat flux density, achieve the heat insulation performance and realize better heat preservation performance, so that the long heat preservation capability is ensured.
More specifically, titanium has a thermal conductivity of 15.24Wm-1K-1And the material of the ceramic thermal insulation coating layer I21 is ZrO2Has a thermal conductivity of 2.17Wm-1K-11/7, which is about the thermal conductivity coefficient of the titanium liner material, the material of the first ceramic thermal barrier coating 21 is La2Zr2O7Has a thermal conductivity of 1.56Wm-1K-1Approximately 1/10, which is the thermal conductivity of the titanium liner material. For example, when the thickness of the inner container of the titanium vacuum cup is delta1A single layer of a ceramic thermal barrier coating of the above material, having a thickness δ 21 of 0.2mm2When the thickness is 0.03mm, the thermal conductivity is calculated by substituting the thermal conductivity into equation 1:
heat flux density without ceramic thermal barrier coating one 21:
q1＝(t1-t3)/(δ1/λ1)
＝(t1-t3)/(0.2×10-3/15.24)
＝7.63×10-6(t1-t3)。
when the ceramic thermal insulation coating layer is ZrO coated with 21 materials2Heat flux density after composite coating:
q2＝(t1-t3)/((δ1/λ1)+(δ2/λ2))
＝(t1-t3)/((0.2×10-3/15.24)+(0.03×10-3/2.17))
＝3.71×10-6(t1-t3)。
when the ceramic thermal insulation coating-21 material is coated with La2Zr2O7Heat flux density after composite coating:
q3＝(t1-t3)/((δ1/λ1)+(δ2/λ2))
＝(t1-t3)/((0.2×10-3/15.24)+(0.03×10-3/1.56))
＝3.09×10-6(t1-t3)。
as can be seen from the analysis of the above-exemplified cases, ZrO coated2After the composite coating is carried out, the heat flow density transmitted by the inner container 2 is reduced to about 48.6% of q2/q1 of the heat flow density without the coating; while being coated with La2Zr2O7The heat flow density transmitted by the inner container 2 after the composite coating is reduced to 40.4% of the heat flow density q3/q1 when the coating is not coated. Therefore, by adopting the coating improvement of the invention, the heat flux density can be effectively reduced, namely the heat transfer capacity is reduced, namely the heat preservation performance of the titanium vacuum cup is improved.
Meanwhile, the metal layer I22 with low radiation coefficient is deposited on the surface of the ceramic heat insulation coating I21, so that radiation heat transfer is reduced, double heat insulation and heat transfer performances are realized, and the ceramic heat insulation coating has high heat insulation performance.
Preferably, the number of the first ceramic thermal insulation coating 21 is a multilayer structure, so that the thermal contact resistance between layers forming multiple interfaces is changed, the heat conduction is reduced, and the thermal insulation performance is improved. Specifically, the number of the first 21 ceramic heat-insulating coatings is 1-10, the total thickness is 1-30 μm, preferably the number of the layers is more than 2, and more preferably the number of the layers is 5-7, so that the change of interface contact thermal resistance is more appropriately generated, and the heat conduction capability is reduced. As another embodiment, when the ceramic thermal insulation coating layer one 21 is formed in multiple layers, the thickness of each layer of the ceramic thermal insulation coating layer one 21 in the direction from the outer side surface of the inner container 2 to the outside is in a coating mode of changing the thickness alternately, and due to the change of the thickness of adjacent layers, the thermal contact resistance effect at the interface is improved, the thermal insulation effect can be better realized, and the thermal insulation performance is improved.
As a further preferable scheme, a radiation-proof metal layer I22 with low emissivity is deposited on the outermost surface of the ceramic thermal insulation coating I21. Preferably, the first radiation-proof metal layer 22 is formed of a material having a thermal conductivity of 0.1 or less. The radiation transmission is reduced, high heat insulation performance is realized, and the thickness of the first radiation-proof metal layer 22 is preferably 0.1-30 mu m. More specifically, the radiation-proof metal layer one 22 is preferably made of a material selected from pure nickel, pure tantalum, pure platinum, pure chromium, or an alloy thereof, such as a nickel alloy, a tantalum alloy, a platinum alloy, or a chromium-nickel alloy, which is deposited as the radiation-proof metal layer one 22.
As another embodiment, as shown in the combination of fig. 1 and fig. 2, the titanium vacuum thermos cup comprises a shell 1 and an inner container 2, a vacuum cavity 3 is formed between the shell 1 and the inner container 2, and the shell 1 is equivalent to an outer cup body of the thermos cup. The bottom of the housing 1 may have a vacuum hole for evacuating the vacuum chamber during processing, and after processing, evacuation is performed to form a gas pressure of not more than 2 × 10 in the vacuum chamber 3-3Pa, and sealing the evacuation hole by welding. Of course, as for the composite coating on the outer side surface of the inner container 2, as shown in fig. 2, a composite coating structure having the above description is adopted, the composite coating structure comprises a plurality of ceramic thermal insulation coatings one 21 deposited on the outer side surface of the inner container 2 made of titanium material, a radiation-proof metal layer one 22 with low emissivity is deposited on the surface of the outermost ceramic thermal insulation coating one 21, and the material of each ceramic thermal insulation coating one 21 is independently selected from ZrO2Or La2Zr2O7. The specific composite coating structure may be processed with reference to the composite coating structure described above and the requirements for material selection and thickness. The outer surface of the first radiation-proof metal layer 22 on the outer surface is preferably processed to ensure that the roughness Ra of the surface is not more than 0.2 mu m, and the processing on the roughness improves the surface smoothness, improves the mirror surface effect and has better capacity of reflecting heat radiation. The titanium vacuum thermos cup can be processed by any conventional manufacturing method, for example, the titanium vacuum thermos cup is manufactured by the processes of evacuation, welding and the like, as long as the composite coating on the outer side surface of the liner 2 is within the scope of the invention, the scope of the invention is claimed, the specific processing of the thermos cup is not limited, and the specific processing of the titanium vacuum thermos cup can be manufactured by the processing technology of the pure titanium metal thermos cup in the prior patent (the publication number is CN 209047833U). To pairThe performance of the prepared titanium vacuum thermos cup is tested, and the result shows that the temperature of the solution in the cup is not more than 30 ℃ after 6 hours of heat preservation, which also indicates that the titanium vacuum thermos cup has good heat preservation effect. The following further describes the specific implementation of the titanium vacuum thermal cup, and the analysis of the specific form and thermal insulation performance of the titanium vacuum thermal cup.
Still more preferably, the material of the above-mentioned housing 1 may be stainless steel, pure titanium or titanium alloy, and preferably the housing 1 is made of pure titanium or titanium alloy, and of course, as shown in fig. 5, it is preferable that the inner surface of the housing 1 is covered with a plurality of layers of ceramic thermal barrier coating layers two 11 and radiation-proof metal layers two 12 with low emissivity, the ceramic thermal barrier coating layers two 11 are covered on the inner surface of the housing 1, the radiation-proof metal layers two 12 are covered on the outermost ceramic thermal barrier coating layers two 11, and the material of each layer of ceramic thermal barrier coating layers two 11 is independently selected from ZrO2Or La2Zr2O7(ii) a The composite coating covers the whole inner surface of the shell 1, and the uniformity is good. The covering mode of the second ceramic thermal insulation coating 11 can also adopt the same mode as that of the first ceramic thermal insulation coating 21 on the surface of the inner container 2, such as deposition or coating. Similarly, when the ceramic thermal barrier coating II 11 is formed in multiple layers, the material of the ceramic thermal barrier coating II 11 in each layer can be selected according to actual needs, for example, each layer can be ZrO2Material, or both La2Zr2O7Material, optionally ZrO2Coating La of material2Zr2O7The coating of the material is deposited alternately, and the material of the radiation-proof metal layer two 12 on the outermost surface is preferably also in the form of pure nickel, pure tantalum, pure platinum, pure chromium or their alloys, wherein the alloy form can be nickel alloy, tantalum alloy, platinum alloy or chromium alloy, or the alloy material formed by combining these metals such as chromium-nickel alloy, etc., and the thickness of the radiation-proof metal layer two 12 is preferably 0.1-30 μm, more preferably 10-20 μm, and the surface roughness Ra of the radiation-proof metal layer two 12 is not more than 0.2 μm. Further, the total thickness of the ceramic thermal barrier coating layer 11 on the inner surface of the outer shell 1 is preferably 1 to 30 μmThe number of layers is more than 2, and the more preferable scheme is that the number of layers is 5-7, so that the change of interface contact thermal resistance is more appropriately generated, and the heat conduction capability is reduced.
Example 1
Firstly, 10 layers of ZrO are deposited on the outer side surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup2The ceramic thermal insulation coating layer I21 is formed by coating, the total thickness of the ceramic thermal insulation coating layer I21 is 30 mu m, and the thickness of each layer of the ceramic thermal insulation coating layer I21 is uniformly distributed, namely each layer of ZrO2The thickness of the coating was 3 μm. ZrO in the outermost layer2And depositing a layer of tantalum alloy radiation-proof metal layer I22 on the surface of the coating, wherein the thickness of the radiation-proof metal layer I22 is 30 microns, and then polishing the surface of the radiation-proof metal layer I22 to enable the surface roughness Ra to reach 0.15 microns. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like. The titanium vacuum thermos cup comprises an inner container 2 and a shell 1, wherein a vacuum cavity 3 is formed between the inner container 2 and the shell 1, and 10 layers of ZrO are deposited on the outer side surface of the inner container 22A first ceramic thermal insulation coating 21 formed by the coating, the total thickness of the first ceramic thermal insulation coating is 30 mu m, and ZrO is arranged at the outermost layer2The surface of the coating is deposited with a first radiation-proof metal layer 22 made of tantalum alloy, and the thickness of the first radiation-proof metal layer 22 is 30 mu m. In this embodiment, the thickness of the inner container 2 made of pure titanium is 0.2 mm. The heat preservation performance of the titanium vacuum cup is detected. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 25.5 ℃.
Example 2
Firstly depositing a layer of ZrO of a ceramic heat-insulating coating I21 on the outer side surface of an inner container 2 made of pure titanium of the titanium vacuum thermos cup2The coating, ceramic thermal barrier coating one 21 thickness is 1 μm. Then ZrO of the ceramic heat-insulating coating layer one 212Depositing a layer of nickel alloy radiation-proof metal layer I22 on the surface of the coating, wherein the thickness of the radiation-proof metal layer I22 is 0.1 mu m, and polishing the surface of the radiation-proof metal layer I22 to enable the surface roughness Ra to reach 0.2 mu m. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like.
The titanium vacuum thermos cup comprises an inner container 2 and an outer shell 1, wherein a vacuum cavity 3 is formed between the inner container 2 and the outer shell 1, a layer of ceramic heat insulation coating I21 is deposited on the outer side surface of the inner container 2, the total thickness is 1 mu m, a radiation-proof metal layer I22 made of nickel alloy is deposited on the surface of the ceramic heat insulation coating I21 on the outermost layer, and the thickness of the radiation-proof metal layer I22 is 0.1 mu m. The thickness of the inner container 2 made of pure titanium material in this embodiment is 0.2 mm. The heat preservation performance of the titanium vacuum cup is detected. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 30 ℃.
Example 3
Firstly, 5 layers of La are deposited on the outer surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup2Zr2O7The ceramic thermal insulation coating I21 is formed by the coating, and the total thickness of the ceramic thermal insulation coating I21 is 10 mu m. Then the La of the ceramic thermal insulation coating layer one 212Zr2O7And depositing a platinum alloy radiation-proof metal layer I22 on the surface of the coating, wherein the thickness of the radiation-proof metal layer I22 is 0.2 mu m, and polishing the radiation-proof metal layer I22 to enable the surface roughness Ra to reach 0.2 mu m. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like.
The titanium vacuum cup comprises an inner container 2 and an outer shell 1 which are made of pure titanium, a vacuum cavity 3 is formed between the inner container 2 and the outer shell 1, and 5 layers of La are deposited on the outer side surface of the inner container 22Zr2O7The ceramic thermal insulation coating layer I21 is formed by coating, the total thickness of the ceramic thermal insulation coating layer I21 is 10 mu m, and the material of the ceramic thermal insulation coating layer I21 is La2Zr2O7In the outermost layer of La2Zr2O7A first radiation-proof metal layer 22 made of platinum alloy is deposited on the surface of the coating, and the thickness of the first radiation-proof metal layer 22 is 0.2 mu m. The thickness of the inner container 2 made of pure titanium material in this embodiment is 0.2 mm. And detecting the heat preservation performance of the material. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 27.4 ℃.
Example 4
The titanium vacuum cup adopts pure titaniumThe outer surface of the manufactured inner container 2 is firstly deposited with 5 layers of La2Zr2O7The first 21 ceramic thermal insulation coating formed by the coating is La2Zr2O7The thickness of the coating is the same, and the total thickness of the first 21 ceramic thermal insulation coating is 23 mu m. Then La on the outermost layer2Zr2O7Depositing a layer of a first radiation-proof metal layer 22 made of pure chromium metal on the surface of the coating, wherein the thickness of the first radiation-proof metal layer 22 is 23 mu m, and polishing the first radiation-proof metal layer 22 to enable the surface roughness Ra to reach 0.2 mu m. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like.
The titanium vacuum cup comprises an inner container 2 and an outer shell 1 which are made of pure titanium, a vacuum cavity 3 is formed between the inner container 2 and the outer shell 1, and 5 layers of La are deposited on the outer side surface of the inner container 22Zr2O7Ceramic thermal barrier coating of coating one 21, each La2Zr2O7The thickness of the coating is the same, the total thickness of the first ceramic heat-insulating coating 21 is 23 mu m, and the material of the first ceramic heat-insulating coating 21 is La2Zr2O7La of ceramic thermal barrier coating layer one 21 on the outermost layer2Zr2O7The coating surface is deposited with a first radiation-proof metal layer 22 of pure chromium metal, and the thickness of the first radiation-proof metal layer 22 is 23 mu m. In the embodiment, the thickness of the inner container 2 made of pure titanium material is 0.2 mm. And detecting the heat preservation performance of the material. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 28.8 ℃.
Example 5
In this embodiment, the ceramic thermal barrier coating layer one 21 is formed by alternately forming different deposition coating layers with different thicknesses. The method comprises the following specific steps:
firstly, 10 layers of ZrO are deposited on the outer side surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup2The ceramic thermal insulation coating layer one 21 is formed by coating, the total thickness of the ceramic thermal insulation coating layer one 21 is 30 mu m, and each layer of ZrO is formed2The thickness of the coating is deposited in a mode of alternating thickness, and specifically, a first layer of ZrO is deposited on the outer side surface of the liner 22Coating the first layer to a thickness of 5 μm, and then coating the surface of the first layerSurface deposition of a second layer of ZrO2And coating, wherein the thickness of the second layer is 1 μm, and then sequentially depositing the subsequent third layer to the tenth layer, the thickness of the third layer is 5 μm, the thickness of the fourth layer is 1 μm, the thickness of the fifth layer is 5 μm, the thickness of the sixth layer is 1 μm, the thickness of the seventh layer is 5 μm, the thickness of the eighth layer is 1 μm, the thickness of the ninth layer is 5 μm, and the thickness of the tenth layer is 1 μm. Then ZrO of the ceramic thermal insulation coating layer I21 of the outermost layer (tenth layer)2And depositing a layer of tantalum alloy radiation-proof metal layer I22 on the surface of the coating, wherein the thickness of the radiation-proof metal layer I22 is 30 microns, and then polishing the surface of the radiation-proof metal layer I22 to enable the surface roughness Ra to reach 0.2 microns. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like.
The titanium vacuum thermos cup comprises an inner container 2 and an outer shell 1 which are made of pure titanium, a vacuum cavity 3 is formed between the inner container 2 and the outer shell 1, and the 10 layers of ZrO are deposited on the outer side surface of the inner container 22The coating forms a first ceramic heat insulation coating 21 with the total thickness of 30 mu m, a first radiation-proof metal layer 22 made of tantalum alloy is deposited on the surface of the first ceramic heat insulation coating 21 on the outermost layer, and the thickness of the first radiation-proof metal layer 22 is 30 mu m. The thickness of the inner container 2 made of pure titanium in this embodiment is 0.2 mm. The heat preservation performance of the titanium vacuum cup is detected. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 22.5 ℃.
Example 6
In this embodiment, the ceramic thermal barrier coating layer one 21 is formed by alternately forming different deposition coating layers with different thicknesses. The method comprises the following specific steps:
5 layers of La are deposited on the outer surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup2Zr2O7The ceramic thermal insulation coating I21 is formed by coating, the total thickness of the ceramic thermal insulation coating I21 is 23 mu m, and each layer of La2Zr2O7The thickness of the coating is deposited in a mode of alternating thickness, and specifically, a first layer of La is deposited on the outer side surface of the liner 22Zr2O7Coating the first layer with a thickness of 6 μm, and depositing a second layer of La on the surface of the first layer2Zr2O7And coating, wherein the thickness of the second layer is 2.5 mu m, and then sequentially depositing the subsequent third layer to the fifth layer, wherein the thickness of the third layer is 6 mu m, the thickness of the fourth layer is 2.5 mu m, and the thickness of the fifth layer is 6 mu m. Then La on the outermost layer2Zr2O7And depositing a layer of a first radiation-proof metal layer 22 made of pure chromium metal on the surface of the coating, wherein the thickness of the first radiation-proof metal layer 22 is 30 microns, and then polishing the surface of the first radiation-proof metal layer 22 to enable the surface roughness Ra to reach 0.2 microns. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like. The titanium vacuum cup comprises an inner container 2 and an outer shell 1 which are made of pure titanium, a vacuum cavity 3 is formed between the inner container 2 and the outer shell 1, and the 5 layers of La are deposited on the outer side surface of the inner container 22Zr2O7The ceramic heat-insulating coating I21 formed by the coating has the total thickness of 23 mu m, and a radiation-proof metal layer I22 made of pure chromium metal is deposited on the surface of the ceramic heat-insulating coating I21 at the outermost layer, wherein the thickness of the radiation-proof metal layer I22 is 30 mu m. The thickness of the inner container 2 made of pure titanium material in this embodiment is 0.2 mm. The heat preservation performance of the titanium vacuum cup is detected. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 25.5 ℃.
Example 7
In this embodiment, the ceramic thermal barrier coating layer one 21 is formed by alternately forming different deposition coating layers with different thicknesses. The method comprises the following specific steps:
the ceramic heat insulation coating I21 formed by alternately depositing 10 layers on the outer side surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup is made of ZrO2Coating and La2Zr2O7The total thickness of the first ceramic heat-insulating coating 21 is 30 mu m, so that the thickness of each layer of the first ceramic heat-insulating coating 21 is uniformly distributed, namely the thickness of each layer is 3 mu m, and specifically, ZrO of the first ceramic heat-insulating coating 21 is deposited on the outer side surface of the inner container 2 firstly2Coating, then first layer of ZrO2Depositing a second layer of La on the surface of the coating2Zr2O7Coating, and sequentially depositing third to tenth layersTo make ZrO2Coating and La2Zr2O7The corresponding ceramic thermal insulation coating layer I21 is obtained by the way of alternate deposition of the coating layers. Then La on the outermost layer2Zr2O7And depositing a layer of tantalum alloy radiation-proof metal layer I22 on the surface of the coating, wherein the thickness of the radiation-proof metal layer I22 is 30 microns, and then polishing the surface of the radiation-proof metal layer I22 to enable the surface roughness Ra to reach 0.2 microns. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like. The titanium vacuum thermos cup comprises an inner container 2 and an outer shell 1 which are made of pure titanium, a vacuum cavity 3 is formed between the inner container 2 and the outer shell 1, and the ZrO is deposited on the outer side surface of the inner container 22Coating and La2Zr2O7The coating is alternately deposited to form 10 layers of ceramic heat-insulating coating I21, the total thickness of 10 layers is 30 mu m, and then La is arranged on the outermost layer2Zr2O7The surface of the coating is deposited with a first radiation-proof metal layer 22 made of tantalum alloy, and the thickness of the first radiation-proof metal layer 22 is 30 mu m. In the embodiment, the thickness of the inner container 2 made of pure titanium material is 0.2 mm. The heat preservation performance of the titanium vacuum cup is detected. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 21.6 ℃.
Example 8
Firstly, 7 layers of La are deposited on the outer surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup2Zr2O7The first 21 ceramic thermal insulation coating formed by the coating is La2Zr2O7The thickness of the coating is the same, and the total thickness of the first 21 ceramic thermal insulation coating is 25 mu m. Then the La of the ceramic thermal insulation coating layer one 212Zr2O7And a layer of radiation-proof metal layer I22 made of pure nickel metal is deposited on the surface of the coating, the thickness of the radiation-proof metal layer I22 is 20 mu m, and the radiation-proof metal layer I22 is polished to enable the surface roughness Ra to reach 0.15 mu m. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like.
The titanium vacuum thermos cup comprises an inner container 2 made of pure titanium and an outer containerA shell 1, a vacuum chamber 3 is formed between the inner container 2 and the shell 1, and 7 layers of La are deposited on the outer side surface of the inner container 22Zr2O7The first 21 ceramic thermal insulation coating formed by the coating is La2Zr2O7The thickness of the coating is the same, and the total thickness of the first ceramic thermal insulation coating 21 is 25 mu m, namely the material corresponding to the first ceramic thermal insulation coating 21 is La2Zr2O7In the outermost layer of La2Zr2O7The surface of the coating is deposited with a first radiation-proof metal layer 22 of pure nickel metal, and the thickness of the first radiation-proof metal layer 22 is 23 mu m. In the embodiment, the thickness of the inner container 2 made of pure titanium material is 0.2 mm. And detecting the heat preservation performance of the material. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 27.1 ℃.
Example 9
Firstly, 6 layers of ZrO of ceramic heat-insulating coating I21 are deposited on the outer surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup2Coating of each layer of ZrO2The thickness of the coating is the same, and the total thickness of all the ceramic thermal insulation coatings-21 is 20 μm. ZrO in the outermost layer2And a layer of radiation-proof metal layer I22 made of pure tantalum metal is deposited on the surface of the coating, the thickness of the radiation-proof metal layer I22 is 15 mu m, and the radiation-proof metal layer I22 is polished to enable the surface roughness Ra to reach 0.15 mu m. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like.
The titanium vacuum thermos cup comprises an inner container 2 and an outer shell 1 which are made of pure titanium, a vacuum cavity 3 is formed between the inner container 2 and the outer shell 1, and 6 layers of ZrO are deposited on the outer side surface of the inner container 22A ceramic thermal insulation coating 21 consisting of a coating layer, each layer of ZrO2The thickness of the coating is the same, the total thickness of the first ceramic heat-insulating coating 21 is 20 mu m, and the material of the first ceramic heat-insulating coating 21 is ZrO2At the outermost layer of ZrO2And a first radiation-proof metal layer 22 made of pure tantalum metal is deposited on the surface of the coating, and the thickness of the first radiation-proof metal layer 22 is 15 microns. In the embodiment, the thickness of the inner container 2 made of pure titanium material is 0.2 mm. And detecting the heat preservation performance of the material. The test results are: after 6 hours incubation, the solution in the cup fallsThe temperature was 27.6 ℃. Has good heat preservation performance.
Example 10
Firstly, 10 layers of ZrO are deposited on the outer side surface of the inner container 2 made of pure titanium of the titanium vacuum thermos cup2The ceramic thermal insulation coating layer I21 is formed by coating, the total thickness of the ceramic thermal insulation coating layer I21 is 30 mu m, and the thickness of each layer of the ceramic thermal insulation coating layer I21 is uniformly distributed, namely each layer of ZrO2The thickness of the coating was 3 μm. ZrO in the outermost layer2And depositing a layer of tantalum alloy radiation-proof metal layer I22 on the surface of the coating, wherein the thickness of the radiation-proof metal layer I22 is 30 microns, and then polishing the surface of the radiation-proof metal layer I22 to enable the surface roughness Ra to reach 0.15 microns. After the outer surface of the inner container 2 of the titanium vacuum thermos cup is treated, the titanium vacuum thermos cup is manufactured through the processes of evacuation, welding and the like. The titanium vacuum thermos cup comprises an inner container 2 and a shell 1, wherein a vacuum cavity 3 is formed between the inner container 2 and the shell 1, and 10 layers of ZrO are deposited on the outer side surface of the inner container 22A first ceramic thermal insulation coating 21 formed by the coating, the total thickness of the first ceramic thermal insulation coating is 30 mu m, and ZrO is arranged at the outermost layer2A first radiation-proof metal layer 22 made of tantalum alloy is deposited on the surface of the coating, and the thickness of the first radiation-proof metal layer 22 is 30 microns; meanwhile, the shell 1 is made of pure titanium material, and 10 layers of ZrO are deposited on the inner surface of the shell 12A second ceramic thermal insulation coating 11 formed by the coating, the total thickness is 30 mu m, and ZrO is arranged on the outermost layer2A second radiation-proof metal layer 12 made of tantalum alloy is deposited on the surface of the coating, and the thickness of the second radiation-proof metal layer 12 is 30 microns. In this embodiment, the thickness of the inner container 2 made of pure titanium is 0.2 mm. The heat preservation performance of the titanium vacuum cup is detected. The test results are: after 6 hours of incubation, the temperature of the solution in the cup was reduced to 22.8 ℃. The composite coating is deposited on the inner surface of the shell 1, so that the heat insulation performance can be better improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof.

Claims (10)

1. The utility model provides an inner bag composite coating structure of titanium vacuum thermos cup, this inner bag (2) of titanium vacuum thermos cup adopt pure titanium or titanium alloy material to make, its characterized in that, inner bag (2) outside surface covering has composite coating, composite coating includes a plurality of layers of ceramic thermal barrier coating one (21) and radiation protection metal level one (22) that have low emissivity, ceramic thermal barrier coating one (21) cover the outside surface at inner bag (2), radiation protection metal level one (22) cover is on outmost ceramic thermal barrier coating one (21) surface, and the material of every layer of ceramic thermal barrier coating one (21) is independent separately is selected from ZrO one (21) of being selected from2Or La2Zr2O7。
2. The inner container composite coating structure of the titanium vacuum thermos cup is characterized in that the number of the first ceramic thermal insulation coating (21) is 1-10, preferably, the number of the first ceramic thermal insulation coating (21) is 5-7.
3. The inner container composite coating structure of the titanium vacuum thermos cup as claimed in claim 1 or 2, wherein the total thickness of the first ceramic thermal insulation coating (21) is 1-30 μm.
4. The composite coating structure of the inner container of the titanium vacuum thermos cup as claimed in the claim 1 or 2, wherein the material adopted by the first radiation-proof metal layer (22) is selected from pure nickel, pure tantalum, pure platinum, pure chromium or their respective alloys.
5. The inner container composite coating structure of the titanium vacuum thermos cup as claimed in claim 1 or 2, wherein the thickness of the first radiation-proof metal layer (22) is 0.1-30 μm.
6. The composite coating structure of the inner container of the titanium vacuum thermos cup as claimed in the claim 4, wherein the surface roughness Ra of the first radiation-proof metal layer (22) is not more than 0.2 μm.
7. The utility model provides a titanium vacuum thermos cup, includes shell (1) and inner bag (2) that pure titanium or titanium alloy made, vacuum cavity (3) have between shell (1) and inner bag (2), its characterized in that, the outside surface covering of inner bag (2) has a plurality of layers of ceramic thermal barrier coating one (21), outermost ceramic thermal barrier coating one (21) surface covering has radiation protection metal level one (22) that have low emissivity, and the material of every layer of ceramic thermal barrier coating one (21) is independent separately to be selected from ZrO2Or La2Zr2O7。
8. A titanium vacuum cup according to claim 7, wherein the number of layers of the first ceramic thermal barrier coating (21) is 1-10.
9. The titanium vacuum cup as claimed in claim 7 or 8, wherein the material of the first radiation-proof metal layer (22) is selected from pure nickel, pure tantalum, pure platinum, pure chromium or their alloy form; preferably, the thickness of the first radiation-proof metal layer (22) is 0.1-30 μm.
10. The titanium vacuum thermos cup according to the claim 7 or 8, characterized in that the inner surface of the shell (1) is covered with several layers of the second ceramic thermal insulation coating (11) and the second radiation protection metal layer (12) with low emissivity, the second ceramic thermal insulation coating (11) is covered on the inner surface of the shell (1), the second radiation protection metal layer (12) is covered on the surface of the outermost second ceramic thermal insulation coating (11), and the material of each second ceramic thermal insulation coating (11) is selected from ZrO independently2Or La2Zr2O7(ii) a Preferably, the material of the housing (1) is selected from stainless steel, pure titanium or titanium alloy.
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CN2843301Y (en) * 2005-11-17 2006-12-06 倪正敏 Stainless-steel thermos cup with ceramic lining
CN105595743A (en) * 2016-03-09 2016-05-25 苏州鑫精艺钛制品有限公司 Titanium vacuum cup with high-airtightness vacuum thermal insulation cavity
CN107287546A (en) * 2016-04-05 2017-10-24 武汉理工大学 Heat insulation cup prepared by a kind of utilization thermal spraying 3D printing technique and preparation method thereof
CN105951028A (en) * 2016-05-09 2016-09-21 西安交通大学 Method for synchronously feeding powder to prepare ceramic based thermal barrier coating of continuous and gradual variation structure
CN109402633A (en) * 2018-11-05 2019-03-01 中国航空制造技术研究院 A kind of thermal insulation layer construction with infrared high reflection function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114680554A (en) * 2021-12-16 2022-07-01 浙江佳钛科技有限公司 Container and manufacturing method thereof
CN114165916A (en) * 2021-12-20 2022-03-11 张丽华 Vacuum insulation liquid electric heater

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