CN110754951B - Coating and cooking device - Google Patents

Coating and cooking device Download PDF

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Publication number
CN110754951B
CN110754951B CN201811299220.3A CN201811299220A CN110754951B CN 110754951 B CN110754951 B CN 110754951B CN 201811299220 A CN201811299220 A CN 201811299220A CN 110754951 B CN110754951 B CN 110754951B
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Prior art keywords
coating
sub
quasi
microns
quasicrystalline
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CN110754951A (en
Inventor
万鹏
陈永君
曹达华
陈炜杰
解志文
董闯
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Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
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Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
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Priority to EP19840873.4A priority Critical patent/EP3804581A4/en
Priority to KR1020207035975A priority patent/KR102482711B1/en
Priority to PCT/CN2019/076743 priority patent/WO2020019717A1/en
Priority to JP2020572784A priority patent/JP7148649B2/en
Publication of CN110754951A publication Critical patent/CN110754951A/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00Parts, details or accessories of cooking-vessels
    • A47J36/02Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/025Vessels with non-stick features, e.g. coatings
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/002Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/08Pressure-cookers; Lids or locking devices specially adapted therefor
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J37/00Baking; Roasting; Grilling; Frying
    • A47J37/10Frying pans, e.g. frying pans with integrated lids or basting devices

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Cookers (AREA)

Abstract

The invention relates to a coating, a preparation method thereof and cooking equipment. The coating comprises: the quasi-crystal coating comprises a plurality of sub-coatings containing quasi-crystal materials, wherein the sub-coatings are sequentially stacked from bottom to top, and the particle size of the quasi-crystal materials in at least one sub-coating is larger than that of the quasi-crystal materials in at least one sub-coating above the sub-coating. The coating has the advantages of good non-stick property, low cost, simple preparation process and easy industrialization, and is particularly suitable for cooking equipment.

Description

Coating and cooking device
Technical Field
The invention relates to the technical field of materials, in particular to a coating and cooking equipment.
Background
The quasi-crystal coating has the advantages of high hardness, high corrosion resistance, wear resistance, low surface energy and the like, is widely concerned by researchers, and becomes a hot candidate material for replacing the existing Teflon non-stick coating. However, quasicrystalline coatings with good non-stick properties are expensive to produce, which severely limits the industrialization process of quasicrystalline coating applications.
Thus, the related art of the existing quasicrystalline coating still needs to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a coating which is non-stick, low cost, simple in preparation process, easy to industrialize, or particularly suitable for cooking devices.
In one aspect of the invention, the invention provides a coating. According to an embodiment of the invention, the coating comprises: the quasi-crystal coating comprises a plurality of sub-coatings containing quasi-crystal materials, wherein the sub-coatings are sequentially stacked from bottom to top, and the particle size of the quasi-crystal materials in at least one sub-coating is larger than that of the quasi-crystal materials in at least one sub-coating above the sub-coating. The inventor finds that the quasi-crystal material with larger particle size is firstly formed on the lower layer of the coating layer by the coating layer, and then the quasi-crystal material with smaller particle size is formed on the upper layer of the coating layer, so that the coating layer has the advantages of good non-stickiness, low cost, simple preparation process and easy industrialization, and is particularly suitable for cooking equipment.
According to the embodiment of the present invention, among the quasi-crystalline materials forming the plurality of sub-coating layers, the quasi-crystalline material forming the uppermost sub-coating layer has the smallest particle size.
According to the embodiment of the present invention, among the quasi-crystal materials forming the plurality of sub-coatings, the quasi-crystal material forming the lowermost sub-coating has the largest particle size.
According to an embodiment of the invention, said sub-coating further comprises a quasi-crystalline like phase.
According to an embodiment of the invention, said quasi-crystalline like phase is B2And (4) phase(s).
According to an embodiment of the present invention, in the quasi-crystalline material forming the uppermost sub-coating layer, at least 90% of the quasi-crystalline material has a particle size of not more than 150 μm.
According to an embodiment of the present invention, at least 90% of the quasicrystalline material forming the uppermost sub-coating layer has a particle size of 20 to 80 μm.
According to the embodiment of the invention, at least 90% of the quasi-crystal materials forming the lowermost sub-coating layer have the particle size of 150-300 microns.
According to an embodiment of the invention, each of the plurality of sub-coatings independently comprises a plurality of sub-coatings.
According to an embodiment of the invention, each of said subcoats comprises 5-10 of said subcoats.
According to an embodiment of the invention, the thickness of the coating is 20-200 microns.
According to the embodiment of the invention, the quasi-crystal coating comprises a first sub-coating and a second sub-coating which are sequentially stacked from bottom to top, wherein at least 90% of quasi-crystal materials forming the first sub-coating have the particle size of 150-300 microns, and at least 90% of quasi-crystal materials forming the second sub-coating have the particle size of 20-150 microns.
According to an embodiment of the present invention, the particle size of the quasicrystalline material forming the sub-coating layer is gradually reduced from bottom to top.
According to an embodiment of the invention, the coating satisfies at least one of the following conditions: the surface roughness of the upper surface is less than 2 microns; the content of the quasicrystal material is 20-90%; the porosity is 0.1% -20%; the thermal conductivity is 0.1-3W/m.K.
In another aspect of the invention, the invention provides a coating. According to an embodiment of the invention, the coating comprises: the quasi-crystal coating comprises a plurality of sub-coatings containing quasi-crystal materials, wherein the sub-coatings are sequentially stacked from bottom to top, and the porosity of the quasi-crystal materials in at least one sub-coating is larger than that of the quasi-crystal materials in at least one sub-coating above the sub-coating. The inventor finds that the quasi-crystal material with high porosity is firstly formed on the lower layer of the coating, and then the quasi-crystal material with low porosity is formed on the upper layer of the coating, so that the coating can conduct heat uniformly without cracks, can reduce the phenomenon of local overheating when being used for cooking equipment, prevents pan pasting, and has the advantages of good non-adhesiveness, low cost, simple preparation process and easy industrialization.
According to an embodiment of the present invention, among the quasi-crystalline materials forming the plurality of sub-coatings, the quasi-crystalline material forming the uppermost sub-coating has the smallest porosity.
According to the embodiment of the present invention, among the quasi-crystalline materials forming the plurality of sub-coatings, the quasi-crystalline material forming the lowermost sub-coating has the largest porosity.
According to an embodiment of the invention, the porosity gradient of the quasicrystalline material forming said sub-coating from bottom to top decreases.
In yet another aspect of the invention, a cookware is provided. According to an embodiment of the invention, at least a part of the surface of the pot is formed with the aforementioned coating. The inventor finds that the cookware has good non-stick property, low cost and easy industrialization, and has all the characteristics and advantages of the coating, and redundant description is not repeated.
In a further aspect of the invention, the invention provides a cooking apparatus comprising a pot as described above, according to an embodiment of the invention. The inventor has found that the cooking apparatus has all the features and advantages of the aforementioned cookware, and will not be described in any greater detail herein.
According to an embodiment of the present invention, the cooking device is at least one selected from a group consisting of a wok, a frying pan, a stew, a milk pan, an electric rice cooker, and a pressure cooker.
Drawings
FIG. 1 shows a schematic cross-sectional structure of a coating according to an embodiment of the invention.
FIG. 2 shows a schematic cross-sectional structure of a sub-coating according to an embodiment of the present invention.
FIG. 3 shows a schematic cross-sectional structure of a coating according to another embodiment of the present invention.
FIG. 4 shows a schematic flow diagram of a method of preparing a coating according to one embodiment of the present invention.
Fig. 5 shows a schematic flow diagram of a method of producing a coating according to another embodiment of the invention.
Fig. 6 shows a schematic flow diagram of a method of producing a coating according to yet another embodiment of the invention.
Reference numerals:
100: coating 101a, 101b, 101c, 101 d: subcoating 1011a, 1011b, 1011c, 1011 d: the sub-coating 110: first subcoat 120: second subcoating
Detailed Description
The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
In one aspect of the invention, the invention provides a coating. According to an embodiment of the present invention, referring to fig. 1, the coating 100 includes: the multilayer coating comprises a plurality of sub-coating layers 101d, 101c, ·, 101b and 101a containing quasi-crystal materials, which are sequentially stacked from bottom to top, wherein the particle size of the quasi-crystal materials in at least one of the sub-coating layers is larger than that of the quasi-crystal materials in at least one of the sub-coating layers above the sub-coating layers (it should be noted that fig. 1 is only an exemplary illustration of the structure of the coating 100, and no limitation is made on the number of the sub-coating layers in the coating 100, and the particle size in the present invention refers to the range of particle size). The inventor finds that the quasi-crystal material with larger particle size is firstly formed into the lower layer of the coating 100, and then the quasi-crystal material with smaller particle size is formed into the upper layer of the coating 100, so that the coating 100 has the advantages of good non-stick property, low cost, simple preparation process and easy industrialization, and is particularly suitable for cooking equipment.
Or it may be:
in one aspect of the invention, the invention provides a coating. According to an embodiment of the present invention, referring to fig. 1, the coating 100 includes: the multilayer ceramic electronic component comprises a plurality of sub-coating layers 101d, 101c, ·, 101b and 101a containing quasi-crystal materials, which are sequentially stacked from bottom to top, wherein the quasi-crystal materials of at least two sub-coating layers 101a, 101b, ·, 101c and 101d have different particle sizes, and the quasi-crystal material of the sub-coating layer 101a forming the uppermost layer has the smallest particle size (it should be noted that fig. 1 is only an exemplary illustration of the structure of the coating layer 100, and does not limit the number of sub-coating layers in the coating layer 100 at all; the particle size in the present invention refers to a particle size range). The inventor finds that the quasi-crystal material with larger particle size is firstly formed into the lower layer of the coating 100, and then the quasi-crystal material with smaller particle size is formed into the upper layer of the coating 100, so that the coating 100 has the advantages of good non-stick property, low cost, simple preparation process and easy industrialization, and is particularly suitable for cooking equipment.
According to an embodiment of the invention, the coating may be provided on a metal substrate or a metal composite plate. Preferably, the metal substrate is aluminum, stainless steel, carbon steel, iron, and the like. Therefore, the coating is suitable for various fields, and has wide prospect and wide application range.
In the prior art, the quasi-crystal materials of the quasi-crystal coating layer in the thickness direction have the same particle size, and the quasi-crystal coating layer prepared by researchers and having the same particle size of the quasi-crystal materials in the thickness direction has poor or better non-stick property. The inventors of the present application have made extensive and intensive studies on the quasicrystalline coating, and as a result, surprisingly found that a coating layer formed of a quasicrystalline material having a small particle diameter has a large contact angle due to a small pore size between particles, and thus a quasicrystalline coating layer having the same particle diameter of the quasicrystalline material in the thickness direction has good non-tackiness only when the particle diameter of the quasicrystalline material forming the coating layer is small. While the inventor of the present application has creatively broken the general recognition that each part of the quasicrystalline coating structure in the prior art is formed by quasicrystalline material with the same particle size, referring to fig. 1, in the formed coating 100, the particle size of the quasicrystalline material in at least one of the sub-coatings is larger than that of the quasicrystalline material in at least one of the sub-coatings located above the same, for example, specifically, the particle size of the quasicrystalline material in the sub-coating 101d is larger than that of the quasicrystalline material in the sub-coating 101c, the particle sizes of the quasicrystalline materials in the respective sub-coatings are independent and independent of each other, and the particle sizes of the quasicrystalline materials in the sub-coatings 101a and 101b are not particularly limited; or it may be: in the formed coating layer 100, the grain size of the quasicrystalline material of at least two of the sub-coating layers 101a, 101b, ·, 101c, 101d is different, and the grain size of the quasicrystalline material of the sub-coating layer 101a forming the uppermost layer is minimized. Therefore, the quasicrystal material with larger particle size is firstly formed on the lower layer of the coating 100, and then the quasicrystal material with smaller particle size is formed on the upper layer of the coating 100, so that the waste of the quasicrystal material with larger particle size can be avoided, the production cost is greatly reduced, meanwhile, as the quasicrystal material with larger particle size is firstly formed on the lower layer of the coating 100, and then the quasicrystal material with smaller particle size is formed on the upper layer of the coating 100, the quasicrystal material with larger particle size on the lower layer has better bonding force with the base material of the coating, the porosity can be increased, the thermal conductivity is reduced, the base material can conduct heat uniformly, the phenomenon of local overheating is reduced, and pot pasting is prevented; the grain size of the quasicrystal material on the upper layer is small, a compact upper layer is formed, the nonstick property is good, and then the quasicrystal material with large grain size and the quasicrystal material with small grain size are matched with each other, so that the formed coating 100 is good in wear resistance and good in nonstick property, and is particularly suitable for being used for cooking equipment.
According to an embodiment of the present invention, the description "the grain sizes of the quasicrystalline materials of at least two of said sub-coatings 101a, 101b, ·, 101c, 101d are different" used herein means: the grain size of the quasicrystal material forming the plurality of sub-coatings 101a, 101b, ·, 101c, 101d can be ensured to be different from that of at least two of the plurality of sub-coatings 101a, 101b, ·, 101c, 101 d. For example, the sizes of the quasicrystalline materials of the sub-coatings 101a and 101b may be different, the sizes of the quasicrystalline materials of the sub-coatings 101b and 101c may be different, and the sizes of the quasicrystalline materials of the sub-coatings 101c and 101d may be different, where the positions of the two sub-coatings with different sizes of the quasicrystalline materials in the coating 100 are not particularly limited.
According to the embodiment of the present invention, it is preferable that the grain size of the quasicrystalline material forming the uppermost sub-coating layer 101a is the smallest (note that the smallest grain size here means that the grain size of the quasicrystalline material forming the uppermost sub-coating layer 101a is the smallest among the quasicrystalline materials forming the plurality of sub-coating layers). Because the grain size of the quasi-crystal material of the uppermost layer of the sub-coating 101a is the smallest, the uppermost layer of the sub-coating 101a is more compact, the non-adhesiveness of the coating can be further improved, and further, the quasi-crystal material with large grain size and the quasi-crystal material with small grain size are mutually matched, so that the formed coating 100 is good in wear resistance and non-adhesiveness, and is particularly suitable for being used for cooking equipment.
According to the embodiment of the present invention, in the plurality of sub-coating layers 101a, 101b, ·, 101c, 101d of the coating layer 100, as long as the particle size of the quasi-crystal material of the sub-coating layer 101a forming the uppermost layer is ensured to be the smallest, for other sub-coating layers, such as the sub-coating layers 101b, ·, 101c, 101d, etc., the order of the particle sizes of the quasi-crystal material therein is not particularly limited, i.e. the particle size of the quasi-crystal in the sub-coating layer 101b is the largest, and the particle size of the quasi-crystal material in the sub-coating layer 101d is the smallest; the grain size of the quasicrystalline material in the sub-coating 101c may be the largest; it is also possible that the grain size of the quasicrystalline material in the sub-coating 101d is the largest.
According to the embodiment of the present invention, it is preferable that the grain size of the quasicrystalline material forming the lowermost sub-coating 101d is the largest (note that the largest here means that the grain size of the quasicrystalline material forming the lowermost sub-coating 101d is the largest among the quasicrystalline materials forming the plurality of sub-coatings). Because the grain size of the quasicrystal material of the sub-coating 101d forming the lowermost layer is the largest at this time, the coating and the base material have stronger bonding force, and the porosity can be further increased, so that the thermal conductivity is further reduced, the heat conduction of the base material is more uniform, the phenomenon of local overheating is further reduced, and the pan pasting is further prevented.
In still other embodiments of the present invention, referring to fig. 1, the grain size of the quasicrystalline material forming the sub-coatings 101d, 101c, ·, 101b, 101a decreases from bottom to top. Therefore, because the particle diameters of the adjacent sub-coatings, such as the sub-coating 101a and the sub-coating 101b, and the sub-coating 101c and the sub-coating 101d, are not greatly different, the particle diameters of the quasicrystal materials forming the whole coating 100 from bottom to top of the sub-coatings 101a, 101b, ·, 101c and 101d are reduced in a gradient manner, so that the bonding force among the sub-coatings is strong, and the wear resistance and the non-stick performance of the coating are further improved, and the coating is particularly suitable for being used for cooking equipment.
In still other embodiments of the present invention, the subcoat may further comprise a quasicrystalline-like phase. Therefore, the coating has the advantages of wide synthetic component range, low brittleness, few defects, low preparation difficulty, non-adhesiveness, wear resistance and corrosion resistance similar to those of a quasicrystal coating, and wider application prospect.
According to an embodiment of the present invention, the quasicrystalline-like phase may be B2And (4) phase(s). B is2Phase and B2The base is similarly homeologously intergrown with the quasicrystal and in a coherent orientation with the quasicrystal, so that B2The performances of the phase are closer to those of quasicrystal; in addition, the valence electron concentration determines the crystal structure characteristics of the material and thus the quasicrystal has extremely low surface energy, and the quasicrystal and its analogous phases are significantly located near a specific valence electron concentration, for example, Al-Cu-Fe in the quasicrystal system, the equivalent electron concentration is 1.86, i.e., the Al-Cu-Fe alloy of the quasicrystal has a valence electron concentration of 1.86 and B has a valence electron concentration of B2The valence electron concentration of the quasi-crystal similar phase Al-Cu-Fe alloy is 1.6-2.2. Therefore, the quasi-crystal similar phase in the quasi-crystal similar phase coating is controlled to be B2The phase can further enable the quasicrystal-like phase coating to have better non-stick property, wear resistance and corrosion resistance, lower brittleness and fewer defects. Therefore, the quasi-crystal similar phase coating has better performances of non-adhesiveness, wear resistance, corrosion resistance and the like.
According to the embodiments of the present invention, the inventors have conducted extensive and intensive studies and experimental verification on the particle size of the quasicrystalline material, and found that, when at least 90% of the quasicrystalline material in the quasicrystalline material forming the uppermost sub-coating layer has a particle size not greater than 150 μm, the pore size between the quasicrystalline material is small, so that the contact angle of the coating 100 formed by the quasicrystalline material is large, and thus the non-stick property of the coating 100 is good. Thus, in some embodiments of the present invention, the grain size of the quasicrystalline material forming the uppermost sub-coating 101a is not greater than 150 microns. Further, in other embodiments of the present invention, at least 90% of the quasicrystalline material forming the uppermost sub-coating has a particle size of 20 to 80 μm, so that the coating 100 is formed to be dense and have a low surface roughness. In some specific embodiments of the present invention, at least 90% of the quasicrystalline material forming the uppermost sub-coating layer 101a may have a particle size of 20 microns, 40 microns, 60 microns, 80 microns, and the like. Thereby, the non-tackiness of the coating 100 is further made good.
According to the embodiment of the present invention, at least 90% of the quasicrystalline material forming the lower sub-coating layer 101b, ·, 101c, 101d has a particle size of 150-300 μm. In some specific embodiments of the present invention, the grain size of the quasicrystalline material forming the lower sub-coating 101b, ·, 101c, 101d may be 150 microns, 180 microns, 210 microns, 240 microns, 270 microns, 300 microns, etc. Therefore, the waste of the quasicrystal material with larger particle size is avoided, and the production cost is greatly reduced.
In still other embodiments of the present invention, referring to fig. 2, the coating 100 includes a first sub-coating 110 and a second sub-coating 120 sequentially stacked from bottom to top, wherein at least 90% of quasi-crystal materials forming the first sub-coating 110 have a particle size of 150 microns and 300 microns, and at least 90% of quasi-crystal materials forming the second sub-coating 120 have a particle size of 20-150 microns. In some specific embodiments of the present invention, the grain size of the quasicrystalline material forming the first sub-coating layer 110 may be 150 microns, 180 microns, 210 microns, 240 microns, 270 microns, 300 microns, etc., and the grain size of the quasicrystalline material forming the second sub-coating layer 120 may be 20 microns, 50 microns, 80 microns, 110 microns, 150 microns, etc. Therefore, the coating 100 has the advantages of good non-stick property, low cost, simple preparation process and easy industrialization, and is particularly suitable for cooking equipment.
According to embodiments of the present invention, the thickness of the coating 100 of the present invention may be 20-200 microns. In some specific embodiments of the present invention, the thickness of the coating 100 may be 20 microns, 40 microns, 60 microns, 80 microns, 100 microns, 120 microns, 140 microns, 160 microns, 180 microns, 200 microns, and the like. Therefore, the coating 100 has a moderate thickness, which not only ensures good non-stick property, wear resistance and hardness, but also prevents the coating from transferring heat too fast, so that the coating is particularly suitable for cooking equipment, does not cause material waste, has low cost and is easy to industrialize.
According to an embodiment of the present invention, the surface roughness of the upper surface of the coating 100 of the present invention is less than 2 microns. In some specific embodiments of the present invention, the surface roughness of the upper surface of the coating 100 may be 0.5 microns, 1 micron, 1.5 microns, and the like. Thus, the lower surface roughness of the upper surface of the coating 100 may allow the coating 100 to further have better non-stick properties; further, if the roughness is too high, the conditioning materials and the like are easy to deposit in the gaps, and the non-stick performance of the coating is reduced in the long-time use process, so that the use effect is influenced.
According to the embodiment of the present invention, the kind, composition, and ratio of the components of the quasicrystalline material are not particularly limited, and those skilled in the art can flexibly select the quasicrystalline material according to the requirements as long as the requirements are met. According to an embodiment of the present invention, the material forming the non-stick coating includes at least two of aluminum, iron, copper, chromium, titanium, nickel, and zirconium, and the material forming the non-stick coating includes an Al-Cu-Fe alloy, an Al-Cu-Fe-Cr alloy, a Ti-Fe alloy, or a Ti-Ni-Zr alloy; in some embodiments of the present invention, the quasicrystalline material may be an Al-Cu-Fe-Cr quasicrystalline material, and in the quasicrystalline material, the atomic number ratio between Al (aluminum), Cu (copper), Fe (iron), and Cr (chromium) may be (60-70): (15-25): (5-15): (5-15). Therefore, the material has wide sources, is easy to obtain, has lower cost, is easy for industrial production, can obtain high-content quasicrystal, has the characteristics of high hardness and high wear resistance, and has good non-adhesiveness.
According to an embodiment of the present invention, the content of the quasicrystalline material in the coating 100 may be 20% to 90%, for example, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, etc. Therefore, the coating has the advantages of good non-adhesiveness, low cost, simple preparation process and easy industrialization, the non-adhesiveness of the coating 100 can be further improved, and the content of the quasicrystal in the finally obtained coating can be higher.
According to an embodiment of the present invention, the quasicrystalline material has an icosahedron or thirty-dihedron microstructure, and the uppermost quasicrystalline coating has a relief structure. Therefore, the quasicrystal coating on the surface of the quasicrystal material has the characteristics of high hardness and high wear resistance, and has good hydrophobicity and non-stickiness.
According to an embodiment of the present invention, the quasicrystalline material may have a valence electron concentration of 1.5-2.5. Further, in some embodiments of the present invention, the quasicrystalline material may have a valence electron concentration of 1.6 to 1.86. In some specific embodiments of the present invention, the valence electron concentration of the quasicrystalline material can be 1.6, 1.7, 1.8, 1.86, etc. Thus, when the alloy is dosed at the factory, the valence electron concentration of the alloy is within this range and the quasicrystal content of the resulting coating can be relatively high.
According to an embodiment of the present invention, the porosity of the coating 100 may be 0.1% to 20%. In some embodiments of the invention, the porosity of the coating 100 may be 0.1%, 0.5%, 2%, 5%, 10%, 20%, etc. Thus, the porosity in the coating layer 100 is small, and thus the contact angle of the coating layer 100 is large, so that the non-tackiness of the coating layer 100 can be further improved; in addition, the porosity of the coating 100 has a moderate range, which not only has reasonable pores to reduce the stress concentration of the coating 100 and avoid the generation of cracks in the coating 100, but also does not have too many pores to reduce the hardness and wear resistance of the coating, thereby affecting the durability of the coating 100.
According to an embodiment of the invention, the thermal conductivity of the coating may be 0.1-3W/m-K. In some embodiments of the invention, the thermal conductivity of the coating 100 can be 0.1W/mK, 0.2W/mK, 0.5W/mK, 1W/mK, 2W/mK, 3W/mK, and the like. Therefore, the thermal conductivity of the coating 100 is appropriate, so that the coating 100 is particularly suitable for cooking equipment, heat can be uniformly distributed on the surface of the cooking equipment when the cooking equipment cooks, the problems of bottom pasting and pot sticking caused by too fast heat transfer can be avoided, and the cooking effect is good.
In other embodiments of the present invention, referring to FIG. 3, each of the subcoats may further include a plurality of subcoats. Taking the sub-coating 101a as an example, the sub-coating 101a may include sub-coatings 1011a, 1011b, ·, 1011c, 1011d (it should be noted that fig. 3 is only an exemplary illustration of the structure of the sub-coating 101a, and does not set any limit to the number of sub-coatings in the sub-coating 101 a). Therefore, each sub-coating comprises a plurality of sub-coatings, so that the thickness of the formed coating 100 is relatively thick, the quasi-crystal material with relatively small particle size is prevented from being filled into gaps of the sub-coatings formed by the quasi-crystal material with relatively large particle size, the quasi-crystal material with relatively small particle size in the upper sub-coating can fully exert the non-stick performance of the quasi-crystal material, and the non-stick performance of the coating 100 is further improved.
According to an embodiment of the present invention, each of the sub-coatings may include 5 to 10 sub-coatings. In some embodiments of the present invention, the number of the sub-coatings may be 5, 6, 7, 8, 9, 10. Therefore, the thickness of each formed sub-coating is moderate, good non-stick performance is guaranteed, material waste is avoided, the cost is low, and industrialization is easy to realize.
In another aspect of the invention, the invention provides a method of making the coating 100 described above. According to an embodiment of the present invention, referring to fig. 4, the method includes:
s100: sequentially forming a plurality of sub-coatings 101d, 101c, 101b and 101a containing the quasi-crystal materials from bottom to top by spraying; wherein the grain size of the quasi-crystalline material in at least one of the sub-coating layers is larger than that of the quasi-crystalline material in at least one of the sub-coating layers located above the quasi-crystalline material (the structural schematic diagram of the formed coating 100 refers to fig. 1). The inventor finds that the method is simple and convenient to operate, easy to implement and easy for industrial production, and the prepared coating 100 is good in non-adhesiveness, low in cost, simple in preparation process, easy to industrialize and particularly suitable for cooking equipment.
Or it may be:
s100: sequentially forming a plurality of sub-coatings 101d, 101c, 101b and 101a containing the quasi-crystal materials from bottom to top by spraying; wherein, the grain size of the quasi-crystal material forming at least two sub-coating layers 101a, 101b, ·, 101c, 101d is different, and the grain size of the quasi-crystal material forming the uppermost sub-coating layer 101a is the smallest (the structure diagram of the formed coating layer 100 refers to fig. 1). The inventor finds that the method is simple and convenient to operate, easy to implement and easy for industrial production, and the prepared coating 100 is good in non-adhesiveness, low in cost, simple in preparation process, easy to industrialize and particularly suitable for cooking equipment.
According to the embodiment of the present invention, it is preferable that the grain size of the quasicrystalline material forming the uppermost sub-coating layer is the smallest (note that the smallest grain size here means that the grain size of the quasicrystalline material forming the uppermost sub-coating layer 101a is the smallest among the quasicrystalline materials forming the plurality of sub-coating layers). The quasi-crystal material of the uppermost layer is the smallest in particle size, the uppermost layer is more compact, the non-adhesiveness of the coating can be further improved, and further the quasi-crystal material with large particle size and the quasi-crystal material with small particle size are matched with each other, so that the formed coating is good in wear resistance and non-adhesiveness, and is particularly suitable for cooking equipment.
According to the embodiment of the present invention, it is preferable that the grain size of the quasicrystalline material forming the lowermost sub-coating layer is the largest (note that the largest here means that the grain size of the quasicrystalline material forming the lowermost sub-coating layer 101d is the largest among the quasicrystalline materials forming the plurality of sub-coating layers). Because the grain size of the quasi-crystal material of the sub-coating layer forming the lowest layer is the largest at the moment, the coating layer and the base material have stronger bonding force, the porosity can be further increased, the heat conductivity is further reduced, the heat conduction of the base material is more uniform, the phenomenon of local overheating is further reduced, and the pan pasting is further prevented.
According to the embodiment of the present invention, the preparation method of the quasicrystalline material is not particularly limited, and one skilled in the art can flexibly select the quasicrystalline material as needed as long as the requirement is met. In some embodiments of the present invention, the preparation method of the quasicrystal material may be atomization powder preparation, and the specific process of the atomization powder preparation is not limited, and those skilled in the art can flexibly select the material according to actual requirements. In some embodiments of the present invention, the alloy ingot is melted to a liquid within 1000-1200 ℃, and then the melted liquid is impacted or otherwise broken into fine droplets with a rapidly moving fluid (atomizing medium), followed by condensation to a solid powder. Therefore, the method has mature process, is easy to operate and is easy for industrial production.
According to an embodiment of the present invention, before spraying the quasicrystalline powder on the surface of the substrate, a step of spheroidizing the quasicrystalline powder may be further included in order to increase the powder yield during spraying. Therefore, the powder yield of the quasicrystal powder is more favorable during spraying in the subsequent steps.
According to the embodiment of the invention, in order to improve the adhesion of the quasicrystalline powder on the substrate, a step of cleaning the surface of the substrate can be further included before spraying, and the specific method for cleaning is not limited as long as the stain, oil stain or rust on the surface of the substrate can be cleaned to meet the requirement of spraying. In the embodiment of the invention, the surface of the matrix can be cleaned and dried by adopting the modes of alcohol, trichloroethylene or pure water and ultrasonic waves, and the like, and the surface of the matrix can not have rust stains and the like before spraying, so that the adhesion of the quasicrystal powder on the matrix can be greatly improved after the spraying after the cleaning. In some embodiments of the present invention, after the cleaning step, the surface of the substrate may be sanded to roughen the surface of the substrate in order to further improve the adhesion of the quasicrystalline powder on the substrate and prolong the service life of the quasicrystalline coating.
According to the embodiment of the invention, because quasicrystal is intrinsically brittle and low in adhesion, and quasicrystal with good performance is difficult to prepare by low-temperature spraying (such as cold spraying), the high-temperature spraying is adopted in the application, namely, quasicrystal powder is heated to a molten or semi-molten state and sprayed to the surface of a substrate at high speed to form a firmly-adhered coating, and the spraying type can include but is not limited to plasma spraying, electric arc spraying, flame spraying and the like. Therefore, the method is simple and convenient to operate, easy to realize and easy for industrial production.
According to the embodiment of the invention, the process conditions of the plasma spraying can be that the power is 30-50kw, the main gas flow is 50-60L/min, the auxiliary gas flow is 20-30L/min, and the powder feeding amount is 15-20 g/min. In some specific embodiments of the present invention, the power may be 30kw, 40kw, 50kw, etc.; the main air flow can be 50L/min, 55L/min, 60L/min and the like; the auxiliary air flow can be 20L/min, 25L/min, 30L/min and the like; the powder feeding amount can be 15g/min, 16g/min, 17g/min, 18g/min, 19g/min, 20g/min and the like. Thus, the coating layer 100 having a moderate thickness and excellent performance can be formed.
In other embodiments of the present invention, referring to fig. 4, after performing the spraying described in S100, the method may further include:
s200: and carrying out annealing treatment on the coating.
According to the embodiment of the invention, in order to obtain the coating with higher content of the quasicrystalline material on the basis of ensuring the quality of the coating, the annealing treatment temperature is 600-800 ℃, such as 600 ℃, 650 ℃, 700 ℃, 750 ℃ or 800 ℃. Therefore, annealing within the temperature range can not only convert the amorphous phase converted by spraying in the coating into quasi-crystal again at high temperature, but also grow the quasi-crystal seed crystal in the coating into quasi-crystal grain, and can not influence the quality of the coating; if the temperature is lower than 600 ℃, the amorphous phase is not enough to be converted into quasi-crystal, but the content of quasi-crystal in the coating is increased compared with the coating before annealing treatment; if the temperature is higher than 800 ℃, although the content of the quasicrystalline material in the coating can be greatly increased, during the annealing process, the coating has excessive thermal stress, and the coating is cracked due to the excessive thermal stress, the non-stick property is relatively poor, and the quality and the service performance of the coating are influenced.
According to the embodiment of the invention, since the coating contains a metal element which is easy to oxidize (such as aluminum), the annealing treatment can be performed under vacuum or a protective atmosphere (such as nitrogen or argon). Therefore, metal elements which are easy to oxidize, such as aluminum, can be protected from being oxidized in the annealing process, and the content of the quasicrystal material in the coating is further improved.
According to the embodiment of the invention, in order to obtain the coating with the best service performance and higher content of the quasicrystalline material, the annealing treatment conditions are as follows: the heating rate is 5-100 ℃/min, such as 5 ℃/min, 10 ℃/min, 20 ℃/min, 30 ℃/min, 40 ℃/min, 50 ℃/min, 60 ℃/min, 70 ℃/min, 80 ℃/min, 90 ℃/min or 100 ℃/min, the heat preservation time is 0.5-10 hours, such as 0.5 hour, 1 hour, 3 hours, 5 hours, 7 hours, 9 hours or 10 hours, the temperature reduction rate is 5-100 ℃/min, such as 5 ℃/min, 10 ℃/min, 20 ℃/min, 30 ℃/min, 40 ℃/min, 50 ℃/min, 60 ℃/min, 70 ℃/min, 80 ℃/min, 90 ℃/min or 100 ℃/min, the temperature is reduced to 200-300 ℃, such as 200 ℃, 230 ℃, 250 ℃, 270 ℃ or 300 ℃, and then the temperature is cooled to room temperature along with the furnace. Therefore, the content of the quasicrystal material in the coating can be improved to the greatest extent, the non-adhesiveness of the coating is further improved to the greatest extent, and in addition, if the heating rate or the cooling rate is too low, the process time can be prolonged; if the temperature rising rate or the temperature reduction rate is too high, the quality of the coating, such as cracking, can be affected; if the heat preservation time is too short, the amorphous phase can not be fully converted into quasi-crystal or the crystal seed can not be completely grown into crystal grains; if the holding time is too long, cracking of the coating may result.
In still other embodiments of the present invention, referring to fig. 5, after performing the spraying described in S100, the method may further include:
s300: the coating is polished.
According to an embodiment of the present invention, the surface roughness of the upper surface of the coating 100 of the present invention is less than 2 microns. In some specific embodiments of the present invention, the surface roughness of the upper surface of the coating 100 may be 0.5 microns, 1 micron, 1.5 microns, and the like. Thus, the lower surface roughness of the upper surface of the coating 100 may result in the coating 100 further having better non-stick properties.
In still other embodiments of the present invention, referring to fig. 6, after performing the spraying process described in S100, the annealing process and the polishing process are the same as described above, and will not be described in detail herein.
In another aspect of the invention, the invention provides a coating. According to an embodiment of the invention, the coating comprises: a plurality of sub-coatings containing quasi-crystal materials are sequentially stacked from bottom to top, wherein the porosity of the quasi-crystal material in at least one of the sub-coatings is greater than the porosity of the quasi-crystal material in at least one of the sub-coatings located above the sub-coating (referring to fig. 1, for example, the porosity of the quasi-crystal material in the sub-coating 101d may be greater than the porosity of the quasi-crystal material in the sub-coating 101c, the porosities of the quasi-crystal materials in the sub-coatings are independent and do not affect each other, and the porosities of the quasi-crystal materials in the sub-coatings 101a and 101b are not particularly limited). The inventor finds that the porosity of the lower layer of the coating is higher than that of the upper layer, and the porosity of the lower layer is higher, so that the heat conducting property of the sub-coating can be reduced, the base material can conduct heat uniformly, the phenomenon of local overheating is reduced, and pan pasting is prevented; the porosity of the upper layer is small, so that a compact sub-coating can be obtained, a super-hydrophobic structure can be formed, stress concentration can be reduced, cracks of the coating are hardly generated, the quasicrystal coating has high hardness, low friction coefficient, wear resistance and corrosion resistance, and good non-stick performance can be realized.
According to an embodiment of the present invention, referring to fig. 1, among the quasi-crystalline materials forming the plurality of sub-coatings, the quasi-crystalline material forming the uppermost sub-coating 101a has the smallest porosity. Therefore, the quasi-crystal material forming the uppermost layer of the sub-coating layer has the smallest porosity, so that the heat conducting performance of the sub-coating layer can be further reduced, the base material can be further enabled to conduct heat uniformly, the phenomenon of local overheating is further reduced, and pan pasting is prevented.
According to an embodiment of the present invention, referring to fig. 1, among the quasi-crystalline materials forming the plurality of sub-coatings, the quasi-crystalline material forming the lowermost sub-coating 101d has the largest porosity. Therefore, the quasi-crystal material for forming the sub-coating at the lowermost layer has the largest porosity, a more compact sub-coating can be further obtained, a super-hydrophobic structure can be further formed, stress concentration can be remarkably reduced, coating cracks are hardly generated, the quasi-crystal coating has high hardness, low friction coefficient, wear resistance and corrosion resistance, and better non-stick performance can be realized.
In still other embodiments of the present invention, referring to fig. 1, the porosity gradient of the quasicrystalline material forming the subcoating 101d, 101c, ·, 101b, 101a decreases from bottom to top. Therefore, the porosity gradient of the quasicrystal material forming the sub-coatings 101d, 101c, 101b and 101a from bottom to top is reduced, so that the heat conduction performance of the sub-coatings can be further reduced, the base material can be further enabled to conduct heat uniformly, the phenomenon of local overheating is further reduced, and pan pasting is prevented; moreover, a more compact sub-coating can be further obtained, a super-hydrophobic structure can be further formed, stress concentration can be remarkably reduced, coating cracks are hardly generated, the quasicrystal coating is high in hardness, low in friction coefficient, resistant to abrasion and corrosion, and better non-stick performance can be achieved.
In yet another aspect of the invention, a cookware is provided. According to an embodiment of the invention, at least a part of the surface of the pot is formed with the aforementioned coating. The inventor finds that the cookware has good non-stick property, low cost and easy industrialization, and has all the characteristics and advantages of the coating, and redundant description is not repeated.
In still another aspect of the present invention, the present invention provides a cooking apparatus, and according to an embodiment of the present invention, the specific kind of the cooking apparatus is not limited, and those skilled in the art can flexibly select the cooking apparatus according to actual needs. In an embodiment of the invention, the cooking device is selected from at least one of a wok, a frying pan, a stew, a milk pan, an electric rice cooker, and a pressure cooker. Wherein, when the cooking equipment is an electric cooker or a pressure cooker, the coating is arranged on the surface of the inner container of the electric cooker or the pressure cooker; when the cooking device is a frying pan, a stew pan or a milk pan, the coating is arranged on the inner surface of the body of the frying pan, the stew pan or the milk pan.
According to the embodiment of the present invention, it can be understood by those skilled in the art that the pan comprises the structures or components necessary for the conventional cooking equipment in addition to the quasicrystal coating and the pan body, and the handle in addition to the quasicrystal coating and the pan body is taken as an example, and will not be described in detail herein.
The following describes embodiments of the present invention in detail.
Example 1
The coating comprises a first sub-coating and a second sub-coating which are sequentially stacked from bottom to top, the grain diameter of the quasi-crystal material forming the first sub-coating is 150-300 microns, and the grain diameter of the quasi-crystal material forming the second sub-coating is 20-150 microns.
The coating is prepared by the following steps:
1. according to the atomic number ratio, Al: cu: fe: cr ═ 60-70: (15-25): (5-15): (5-15) melting the alloy raw material into an alloy ingot.
2. Atomizing to prepare powder: and preparing the quasicrystal powder by adopting powder preparation equipment in a vacuum or protective atmosphere environment.
3. Spheroidizing: and spheroidizing and screening the powder to obtain the powder with the particle size of 20-150 microns and 150-300 microns respectively.
4. Cleaning the surface of a base material: the surface of the material is cleaned and dried by adopting modes of alcohol, trichloroethylene or pure water and ultrasonic waves and the like, and the surface of the base material is required not to have rust and the like before plasma spraying. And then sanding to coarsen the surface of the matrix.
5. Plasma spraying: plasma spraying is adopted to spray 5 layers of 150-300 micron quasicrystal materials on the surface of a base material to form a first sub-coating, and then spraying 5 layers of 20-150 micron quasicrystal materials to form a second sub-coating, wherein the power is 30-50KW, the main gas flow is 50-60L/min, the auxiliary gas flow is 20-30L/min, and the powder feeding amount is 15-20 g/min.
6. Annealing: and annealing the first coating in an argon protective atmosphere, wherein the annealing temperature is 700 ℃, the heating rate is 20-30 ℃/min, the heat preservation time is 1-3 hours, and the cooling rate is 10-20 ℃/min to 300 ℃, and then, furnace cooling is carried out to room temperature.
7. Polishing: the coating was polished to a surface roughness of less than 2 microns.
Comparative example 1
The particle size of the quasicrystalline material forming the coating is 20-150 microns.
The coating is prepared by the following steps:
1. according to the atomic number ratio, Al: cu: fe: cr ═ 60-70: (15-25): (5-15): (5-15) melting the alloy raw material into an alloy ingot.
2. Atomizing to prepare powder: and preparing the quasicrystal powder by adopting powder preparation equipment in a vacuum or protective atmosphere environment.
3. Spheroidizing: and spheroidizing and screening the powder to obtain the powder with the particle size of 20-150 microns.
4. Cleaning the surface of a base material: the surface of the material is cleaned and dried by adopting modes of alcohol, trichloroethylene or pure water and ultrasonic waves and the like, and the surface of the base material is required not to have rust and the like before plasma spraying. And then sanding to coarsen the surface of the matrix.
5. Plasma spraying: plasma spraying is adopted to spray 10 layers of 20-150 micron quasicrystal materials on the surface of a base material, the power is 30-50KW, the main air flow is 50-60L/min, the auxiliary air flow is 20-30L/min, and the powder feeding amount is 15-20 g/min.
6. Annealing: and annealing the first coating in an argon protective atmosphere, wherein the annealing temperature is 700 ℃, the heating rate is 20-30 ℃/min, the heat preservation time is 1-3 hours, and the cooling rate is 10-20 ℃/min to 300 ℃, and then, furnace cooling is carried out to room temperature.
7. Polishing: the coating was polished to a surface roughness of less than 2 microns.
Comparative example 2
The particle size of the quasicrystalline material forming the coating is 150-300 microns.
The coating is prepared by the following steps:
1. according to the atomic number ratio, Al: cu: fe: cr ═ 60-70: (15-25): (5-15): (5-15) melting the alloy raw material into an alloy ingot.
2. Atomizing to prepare powder: and preparing the quasicrystal powder by adopting powder preparation equipment in a vacuum or protective atmosphere environment.
3. Spheroidizing: the powder was spheroidized and sieved to obtain a powder with a particle size of 150-300 microns.
4. Cleaning the surface of a base material: the surface of the material is cleaned and dried by adopting modes of alcohol, trichloroethylene or pure water and ultrasonic waves and the like, and the surface of the base material is required not to have rust and the like before plasma spraying. And then sanding to coarsen the surface of the matrix.
5. Plasma spraying: plasma spraying is adopted to spray 10 layers of 150-300 micron quasicrystal materials on the surface of a base material, the power is 30-50KW, the main gas flow is 50-60L/min, the auxiliary gas flow is 20-30L/min, and the powder delivery amount is 15-20 g/min.
6. Annealing: and annealing the first coating in an argon protective atmosphere, wherein the annealing temperature is 700 ℃, the heating rate is 20-30 ℃/min, the heat preservation time is 1-3 hours, and the cooling rate is 10-20 ℃/min to 300 ℃, and then, furnace cooling is carried out to room temperature.
7. Polishing: the coating was polished to a surface roughness of less than 2 microns.
The substrates in example 1 and comparative examples 1-2 were all mild steel, 25.4 mm in diameter and 4 mm thick; the contact angle was measured using a contact angle tester, and the results are shown in Table 1, wherein the larger the hydrophobic angle, the better the non-tackiness, and the non-tackiness was measured using the fried egg non-tackiness test method and standard according to the national standard GB/T32095. The test data are shown in table 1.
Table 1 contact angle test results, non-stickiness to omelette test results, production costs of the coatings obtained in example 1 and comparative examples 1 to 2
Contact angle Non-stickiness of fried egg Production cost
Example 1 105° Is low in
Comparative example 1 107° Height of
Comparative example 2 90° Is low in
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (20)

1. A coating for a pot or cooking device, comprising:
a plurality of sub-coatings containing quasi-crystal materials are sequentially laminated from bottom to top,
wherein the grain size of the quasi-crystal material in at least one of the sub-coating layers is larger than that of the quasi-crystal material in at least one of the sub-coating layers above the sub-coating layer, and the content of the quasi-crystal material in the coating layer is 20% -90%.
2. The coating layer according to claim 1, wherein among the quasi-crystalline materials forming the plurality of sub-coating layers, the quasi-crystalline material forming the uppermost sub-coating layer has the smallest particle size.
3. The coating layer according to claim 1, wherein, among the quasi-crystal materials forming the plurality of sub-coating layers, the quasi-crystal material forming the lowermost sub-coating layer has the largest particle size.
4. The coating of claim 1, wherein said subcoat further comprises a quasicrystalline-like phase.
5. Coating according to claim 4, characterized in that the quasi-crystalline like phase is B2And (4) phase(s).
6. The coating of claim 2, wherein at least 90% of the quasicrystalline material forming the uppermost subcoat has a particle size of no greater than 150 microns.
7. The coating of claim 6, wherein at least 90% of the quasicrystalline material forming the uppermost subcoat has a particle size of 20-80 microns.
8. The coating of claim 3 wherein at least 90% of the quasicrystalline material forming the lowermost sub-coating has a particle size of 150-300 microns.
9. The coating of claim 1, wherein each of the plurality of subcoats independently comprises a plurality of subcoats.
10. The coating of claim 9, wherein each of said subcoats comprises 5-10 of said subcoats.
11. The coating of claim 1, wherein the coating has a thickness of 20 to 200 microns.
12. The coating of claim 1, comprising a first sub-coating and a second sub-coating sequentially stacked from bottom to top, wherein at least 90% of quasi-crystal materials forming the first sub-coating have a particle size of 150-300 microns, and at least 90% of quasi-crystal materials forming the second sub-coating have a particle size of 20-150 microns.
13. The coating of claim 1, wherein the size of the quasicrystalline material forming the subcoating decreases from bottom to top.
14. The coating of claim 1, wherein the coating satisfies at least one of the following conditions:
the surface roughness of the upper surface is less than 2 microns;
the content of the quasicrystal material is 20-90%;
the porosity is 0.1% -20%;
the thermal conductivity is 0.1-3W/m.K.
15. A coating, comprising:
a plurality of sub-coatings containing quasi-crystal materials are sequentially laminated from bottom to top,
wherein the porosity of the quasi-crystalline material in at least one of the sub-coatings is greater than the porosity of the quasi-crystalline material in at least one of the sub-coatings located thereabove.
16. The coating of claim 15, wherein, of the quasi-crystalline materials forming the plurality of sub-coatings, the quasi-crystalline material forming the uppermost sub-coating has the smallest porosity.
17. The coating of claim 15, wherein, of the quasi-crystalline materials forming the plurality of sub-coatings, the quasi-crystalline material forming the lowermost sub-coating has the greatest porosity.
18. The coating of claim 15, wherein a porosity gradient of a quasicrystalline material forming the subcoating decreases from bottom to top.
19. A cookware, characterized in that at least a part of the cookware has a coating formed on its surface according to any of claims 1-18.
20. A cooking device comprising the pot of claim 19, wherein the cooking device is at least one selected from the group consisting of a wok, a frying pan, a stew pan, a milk pan, an electric rice cooker, and a pressure cooker.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1458296A (en) * 2002-05-13 2003-11-26 北京航空航天大学 Preparation of anti-oxidation aluminium-compper-iron-chromium quasi crystal coating of titanium alloy surface
EP1036855B1 (en) * 1999-03-16 2004-10-13 Praxair S.T. Technology, Inc. Abradable quasicrystalline coating
WO2004092450A1 (en) * 2003-04-11 2004-10-28 Lynntech, Inc. Compositions and coatings including quasicrystals
CN101560618A (en) * 2008-04-18 2009-10-21 鞠汉清 Non-stick pan coating layer and preparation method thereof
CN104995425A (en) * 2012-12-21 2015-10-21 福乐尼·乐姆宝公开有限公司 A method of making a brake disc, brake disc for disc brake and a disc brake
CN106029949A (en) * 2014-01-17 2016-10-12 Iones株式会社 Method for forming coating having composite coating particle size and coating formed thereby
CN106086763A (en) * 2016-06-15 2016-11-09 佛山市顺德区美的电热电器制造有限公司 Pan and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104862573B (en) * 2015-03-30 2017-03-15 北京科技大学 A kind of preparation technology of the Dagwood structure containing a large amount of quasi-crystalline substance micron particles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036855B1 (en) * 1999-03-16 2004-10-13 Praxair S.T. Technology, Inc. Abradable quasicrystalline coating
CN1458296A (en) * 2002-05-13 2003-11-26 北京航空航天大学 Preparation of anti-oxidation aluminium-compper-iron-chromium quasi crystal coating of titanium alloy surface
WO2004092450A1 (en) * 2003-04-11 2004-10-28 Lynntech, Inc. Compositions and coatings including quasicrystals
CN101560618A (en) * 2008-04-18 2009-10-21 鞠汉清 Non-stick pan coating layer and preparation method thereof
CN104995425A (en) * 2012-12-21 2015-10-21 福乐尼·乐姆宝公开有限公司 A method of making a brake disc, brake disc for disc brake and a disc brake
CN106029949A (en) * 2014-01-17 2016-10-12 Iones株式会社 Method for forming coating having composite coating particle size and coating formed thereby
CN106086763A (en) * 2016-06-15 2016-11-09 佛山市顺德区美的电热电器制造有限公司 Pan and preparation method thereof

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