CN114210968A

CN114210968A - Corrosion-resistant material, method for producing same, and cookware comprising corrosion-resistant material

Info

Publication number: CN114210968A
Application number: CN202111550788.XA
Authority: CN
Inventors: 张明; 瞿义生; 王业友; 袁华庭
Original assignee: Wuhan Supor Cookware Co Ltd
Current assignee: Wuhan Supor Cookware Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-22

Abstract

The inventive concept provides an anticorrosive material, a method of preparing the same, and a cooker including the anticorrosive material. The corrosion protection material includes a plurality of corrosion protection particles, each including a non-metallic material and a metallic binder, wherein the non-metallic material includes at least one of an oxide and a nitride of a metal and/or at least one of an oxide and a nitride of a semi-metal. According to the inventive concept, an anti-corrosion layer having excellent anti-corrosion properties can be realized.

Description

Corrosion-resistant material, method for producing same, and cookware comprising corrosion-resistant material

Technical Field

The present invention relates to the field of corrosion protection, and more particularly, to a corrosion protection material, a method of preparing the same, and a cooker including the corrosion protection material.

Background

Corrosion protection technology is used in many fields, and more devices need to be provided with a corrosion protection layer.

Generally, granules are formed using a granulation method, and then the granulated granules are sprayed on the surface of a base material through a spray process to form an anti-corrosion layer on the surface of the base material. When using a cellulose-based binder as the binder used during the granulation process, the presence of the binder leads to a porosity of the finally formed corrosion protection layer, which is proportional to the content of binder, and thus, although the background art has tried to reduce the content of binder in the granulated material, the porosity still reduces the corrosion protection of the corrosion protection layer to a greater or lesser extent.

Therefore, how to reduce the porosity of the corrosion protection layer, thereby providing the corrosion protection layer with excellent corrosion protection performance, is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In order to solve one or more of the above-mentioned problems occurring in the prior art, the present invention provides an anticorrosive material, a method of preparing the same, and a cooker including the anticorrosive material.

According to an exemplary embodiment of the inventive concept, a corrosion protection material includes a plurality of corrosion protection particles, each including a non-metallic material and a metallic binder, wherein the non-metallic material includes at least one of an oxide and a nitride of a metal and/or at least one of an oxide and a nitride of a semi-metal.

According to an exemplary embodiment, each anti-corrosion particle further comprises a metallic material, wherein the metallic material comprises at least one of titanium, a titanium alloy, stainless steel, nickel, and a nickel alloy.

According to an exemplary embodiment, the non-metallic material includes AT least one of titanium oxide, titanium nitride, titanium carbide, ferroferric oxide, iron oxide, aluminum oxide, AT composite, and silicon oxide.

According to an exemplary embodiment, the metallic binder includes at least one of a gallium-aluminum alloy, a gallium-bismuth alloy, a gallium-tin alloy, a gallium-indium alloy, and a bismuth-tin alloy.

According to an exemplary embodiment, each corrosion protection particle further includes an alcohol binder.

A method of manufacturing an anti-corrosion material including a plurality of anti-corrosion particles according to an exemplary embodiment of the inventive concept includes: preparing first particles by using a non-metallic material and an alcohol binder; and preparing second particles by using the first particles, the metal binder and the alcohol binder, wherein the non-metal material comprises at least one of oxide and nitride of metal and/or at least one of oxide and nitride of semimetal.

According to an exemplary embodiment, the first particles further comprise a metallic material, the metallic material comprising at least one of titanium, a titanium alloy, stainless steel, nickel and a nickel alloy, and the weight of the metallic material is 0 to 30% of the total weight of the first particles.

According to an exemplary embodiment, in the process of preparing the first particles, the alcohol binder accounts for 1% to 2% by weight of the first particles.

According to an exemplary embodiment, a mass ratio of the first particles to the metal binder may be in a range of 99: 1-19: 1 in the range of

According to an exemplary embodiment, the method may further include the step of sintering the second particles. In the sintering step, the sintering end point temperature may be in the range of 300 ℃ to 500 ℃, and the sintering holding time may be in the range of 1h to 5 h.

According to an exemplary embodiment, in the process of preparing the second particles, the alcohol binder accounts for 1% to 2% by weight of the first particles.

According to an exemplary embodiment, the size of the metal binder may be in a range of 1 μm to 10 μm.

The non-stick cookware according to an exemplary embodiment of the inventive concept includes an anti-corrosion layer formed on a surface of a substrate, the anti-corrosion layer being formed using anti-corrosion particles formed by any of the above-mentioned methods.

Through the above brief description of the inventive concept, it is possible to provide an anti-corrosion layer having excellent corrosion resistance without the occurrence of the pitting problem, and the anti-corrosion layer has good bondability to a substrate, so that the service life of the anti-corrosion layer can be improved.

Detailed Description

The present invention will now be described more fully hereinafter with reference to examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The surface of a base material such as a cooker is often easily corroded (e.g., rusted) due to electrochemical reaction due to the influence of cooking environment, etc., and therefore, in order to prevent the base material of the cooker from being corroded, a corrosion-preventing layer is provided on the surface of the base material. However, since a cellulose-based binder is generally used as a binder phase of an anticorrosive material forming the anticorrosive layer, the formed anticorrosive layer may have pores due to the cellulose-based binder.

In view of the above disadvantages, the present invention contemplates forming an anticorrosion material by using a metal material as a binder mainly using a double granulation process, thereby significantly reducing the porosity of the formed anticorrosion layer when the anticorrosion layer is formed using the formed anticorrosion material.

Hereinafter, the inventive concept will be described in detail in connection with exemplary embodiments.

The corrosion protection material according to the present inventive concept includes a plurality of corrosion protection particles, and each of the corrosion protection particles includes a non-metallic material and a metallic binder.

The non-metallic material according to the inventive concept may include at least one of an oxide and a nitride of a metal and/or at least one of an oxide and a nitride of a semi-metal. According to an exemplary embodiment, the non-metallic material may include AT least one of titanium oxide, titanium nitride, titanium carbide, ferroferric oxide, iron oxide, aluminum oxide, AT composite, and silicon oxide. Here, the AT composite is a composite of titanium oxide and aluminum oxide, but is not a simple physical mixture of titanium oxide and aluminum oxide. For example, the black titanium oxide is prepared by subjecting titanium dioxide to electric smelting electrolysis to obtain black titanium oxide, and the AT composite material is prepared by simply and physically mixing alumina and titanium dioxide, and subjecting the mixture to electric smelting electrolysis to obtain a composite material structure of black titanium oxide and alumina connected together. Accordingly, one skilled in the art may select a suitable AT composite based on the prior art, and the inventive concept is not so limited.

In addition, the metal binder according to the inventive concept may include at least one of gallium aluminum alloy, gallium bismuth alloy, gallium tin alloy, gallium indium alloy, and bismuth tin alloy. However, the inventive concept is not limited thereto, that is, the metal binder of the inventive concept is used to fill the pores remaining on the surface and/or inside of the particles due to the removal of the alcohol-based binder, which will be described below, and thus, those skilled in the art may select a suitable metal phase as the metal binder upon reading the inventive concept.

In addition, optionally, the corrosion prevention material according to the exemplary embodiment of the inventive concept may further include a metal material, and the metal material may include at least one of titanium, a titanium alloy, stainless steel, nickel, and a nickel alloy. However, the inventive concept is not limited thereto, and those skilled in the art can select a suitable metal material based on understanding the inventive concept.

In addition, optionally, the corrosion prevention material of the exemplary embodiment of the inventive concept may further include an alcohol binder. Here, the alcohol-based binder may include at least one of alcohol-based binders such as a polyvinyl alcohol-based binder, a polypropylene alcohol-based binder, a higher alcohol-based binder containing six carbon atoms or more, and the like.

Hereinafter, a method of manufacturing the corrosion prevention material of the present inventive concept will be described in detail with reference to exemplary embodiments.

The method of manufacturing the corrosion prevention material according to the exemplary embodiment of the inventive concept may include primary granulation and secondary granulation.

One-shot granulation

According to the inventive concept, the primary granulation may form the first granules through a prior art granulation process using a non-metallic material and a binder, and optionally further including a metallic material.

According to an exemplary embodiment of the inventive concept, the first particle may include 0 wt% to 30 wt% of a metal material, 0.1 wt% to 1 wt% of a binder, and the balance of a non-metal material therein. Here, the non-metallic material may include AT least one of titanium oxide, titanium nitride, titanium carbide, ferroferric oxide, iron oxide, aluminum oxide, an AT composite (a composite of aluminum oxide and titanium oxide), and silicon oxide, and the binder may include an alcohol binder, and the alcohol binder may include AT least one of an alcohol binder such as a polyvinyl alcohol binder, a polypropylene alcohol binder, a higher alcohol binder containing six carbon atoms or more, and the like. In addition, according to an exemplary embodiment of the inventive concept, the material forming the first particles may further include a metal material, and the metal material may include at least one of titanium, a titanium alloy, stainless steel, nickel, a nickel alloy, and the like.

In addition, the metallic material and the non-metallic material according to the exemplary embodiments of the inventive concept may have a suitable particle size (e.g., each having a particle size in a range of 10 μm to 50 μm). For example, the inventive concept is not limited to the size of the particle size of each of the metallic material and the non-metallic material forming the first particles, and a person skilled in the art may make an appropriate selection of the size of the particle size of each of the metallic material and the non-metallic material according to the inventive concept.

When a non-metallic material, a binder, and optionally a metallic material are selected, the first granules can be formed using granulation methods known in the art, in accordance with the present inventive concept.

For example, a primary granulation process may be performed using a pulping process. According to a specific example, a slurry can be prepared by using 1 wt% to 2 wt% of a binder, 0.5 wt% to 1 wt% of a dispersant, 1 wt% to 2 wt% of an antifoaming agent, and the balance of deionized water, wherein the wt% contents of the binder, the dispersant, and the antifoaming agent are the weight percentage of the corresponding components in the total weight of the slurry. Further, the defoaming agent may be polyether-modified silicone oil and/or organic silicone oil, and the dispersant may be citric acid and/or triethylhexylphosphoric acid. After the slurry is prepared, the mass ratio of 0: 10-3: a metallic material and a non-metallic material in the range of 7 are added to the slurry to obtain a slurry having a solid content of 20 wt% to 70 wt%. The slurry may then be subjected to a spray drying process. For example, the slurry can be conveyed to a high-speed liquid throwing disc with the speed of 6000 to 15000 revolutions per minute to form liquid drops, the liquid drops can be blown into a drying tower with the temperature of 100 to 400 ℃ by hot air with the temperature of 60 to 100 ℃, and spherical and solid first particles with the size of 10 to 50 microns are formed after 5 to 15 seconds of stay in the descending process. However, the inventive concept is not limited to the granulation method and the size of the formed first particles, and those skilled in the art may form the first particles having a desired size of particle using granulation processes known in the art.

After forming the first particles, the first particles may be subjected to a drying and/or sintering process. However, the inventive concept is not limited thereto. That is, the drying and/or sintering process may be omitted.

Secondary granulation

After the first granules are formed, a secondary granulation process may be performed. Specifically, the secondary granulation process may be performed using the first particles formed by the primary granulation, the binder, and the metal binder.

According to an exemplary embodiment, the first particles may be formed by a one-time granulation process, may have a size of 10 μm to 50 μm, and may include an optional metallic material, a non-metallic material, and a binder. The binder may include at least one of alcohol binders used in a primary granulation process. The metallic binder may include at least one of gallium-aluminum alloy, gallium-bismuth alloy, gallium-tin alloy, gallium-indium alloy, and bismuth-tin alloy. However, exemplary embodiments of the inventive concept are not limited to the above materials.

In addition, in order to facilitate subsequent processes such as pulping and spraying, which will be described later, a grinding process may be performed on the metal binder, so that the particles of the metal binder and the particles of the first particles are more easily bonded by the binder, to improve the granulation yield. Here, according to an exemplary embodiment, the metal binder may have a particle size of 1 μm to 10 μm. When the particle size of the metal binder is less than 1 mu m, the preparation process cost is high; however, when the particle size of the metal binder is greater than 10 μm, the metal binder having a larger particle size requires a longer time for heating to disperse the metal binder into the pores, decreasing the production efficiency.

After the material is selected, a pulping process may be performed. Specifically, 1 wt% -2 wt% of binder, 0.5 wt% -1 wt% of dispersant, 1 wt% -2 wt% of defoaming agent and the balance of deionized water can be used for preparing slurry. Here, the wt% contents of the binder, dispersant, and defoamer are all percentages of the weight of the respective components based on the total weight of the slurry. The binder may include at least one of alcohol binders such as a polyvinyl alcohol binder, a polypropylene alcohol binder, a higher alcohol binder containing six or more carbon atoms, etc., the defoaming agent may be polyether-modified silicone oil or organic silicone oil, and the dispersing agent may be citric acid or triethylhexylphosphoric acid.

After the slurry is prepared, the mass ratio of 99: 1-19: 1 and a metal binder to obtain a slurry having a solid content of 20 to 70 wt%. Here, when the amount of the slurry is larger, the solid content is smaller, but when the solid content is less than 20 wt%, the granulation time is long, resulting in an increase in cost; however, when the solid content is more than 70 wt%, the solid content is high, so that the slurry content in the slurry is low, and the subsequent spraying process cannot be stably performed, thereby affecting the production stability. Furthermore, it has been found, according to the studies of the applicant, that the ratio of the mass of the metal binder added to the slurry during the secondary granulation to the total mass of the metal binder and the first granules affects the corrosion resistance of the finally formed second granules in the form of a parabola. Specifically, when the addition amount of the metal binder is 2.8% to 3.2%, the corrosion resistance of the finally formed second particles is optimal; when the proportion is less than 1%, rusting is easily caused by the granulation pores (pores not filled with the metal binder); when the ratio is more than 5%, the metal binder is easily corroded.

After the pulping process, the pulp may be subjected to a spray drying process. For example, the slurry may be fed to a high speed spinning disc at 6000 to 10000 rpm to form droplets, which may be blown by hot air at 60 to 100 ℃ into a drying tower at 100 to 400 ℃ and may be held for 5 to 15 seconds during descent to form spherical, solid second particles having a particle size in the range of 20 to 150 μm. However, the inventive concept is not limited to the granulation method and the size of the formed second particles, and one skilled in the art may form the first particles having a desired size particle size using granulation processes known in the art.

Through the above process, the second particles having a desired size may be formed. Here, the second particles may include particles having a mass ratio of 99: 1-19: 1 with the metal binder and 0.1 wt% to 1 wt% of an alcohol binder. Here, when the weight ratio of the alcohol binder is less than 0.1 wt%, the binder accounts for a small amount and granulation cannot be effectively performed, and when the weight ratio of the binder is more than 1 wt%, the binder accounts for a large amount, which results in excessive binder residue and is not favorable for a subsequent sintering binder removal process.

After the second particles are formed, the second particles may be subjected to a sintering process to remove moisture from the second particles, thereby resulting in the final corrosion resistant particles according to the inventive concept. The sintering curve can be prepared according to the physical properties of the second particles. Here, the temperature rise rate may be 5 ℃/min to 10 ℃/min, the heating end point temperature may be 300 ℃ to 500 ℃, and then the temperature may be maintained for 1h to 5 h.

According to exemplary embodiments of the inventive concept, the sintering end point temperature easily affects the corrosion resistance of the finally formed second particles. Specifically, the sintering end point temperature according to the present inventive concept affects the corrosion resistance of the finally formed corrosion prevention particles in a parabolic form, and the finally formed corrosion prevention particles have the optimal corrosion resistance when the sintering end point temperature is in the range of 390 to 410; however, when the sintering end point temperature is less than 300 ℃, the pores of the finally formed corrosion prevention particles may be insufficiently filled; in contrast, when the sintering end point temperature is more than 500 ℃, part of the metal binder is easily volatilized, also resulting in poor corrosion resistance of the finally formed corrosion prevention particles. In addition, the holding temperature of sintering also affects the corrosion resistance of the finally formed corrosion protection particles. Specifically, when the holding time is less than 1 hour, poor corrosion resistance is liable to result due to insufficient filling of the metal binder; the corrosion resistance is improved as the holding time is increased, however, when the holding time is more than 5 hours, the corrosion resistance of the finally formed second particles is not remarkably improved.

The inventive concept has been described above in detail in connection with exemplary embodiments. The present invention contemplates that the corrosion protection coating layer formed on the surface of the base material of the cooker through the spray coating process has a low porosity by filling the pores remaining due to the removal of the alcohol binder during the spray coating of the corrosion protection particles using the metal binder, thereby improving the life span and corrosion protection of the formed corrosion protection layer.

In the following, the advantageous effects of the inventive concept will be embodied in conjunction with specific examples.

Example 1

Titanium carbide particles having a particle size of 10 μm and stainless steel particles having a particle size of 40 μm are provided, and polyvinyl alcohol is provided as a binder.

Polyvinyl alcohol, citric acid, polyether modified silicone oil, and deionized water were mixed to prepare a first slurry. In the first slurry, by weight percentage, polyvinyl alcohol accounts for 1.5%, citric acid accounts for 0.7%, polyether modified silicone oil accounts for 1.6%, and the balance is deionized water.

And (2) mixing the components in a mass ratio of 8: 2, the titanium carbide particles and the stainless steel particles are added to the first slurry to prepare a first slurry. Wherein the titanium carbide particles and the stainless steel particles account for 45 percent of the total weight of the slurry.

The first slurry is conveyed to a high-speed liquid throwing disc at 8000 revolutions per minute, the slurry is thrown out by the high-speed liquid throwing disc rotating at high speed to form drops, and then the drops are blown into a drying tower at 280 ℃ by hot air at 70 ℃, so that the drops blown into the drying tower fall after 8-10 seconds of stay to form first particles.

Polyvinyl alcohol, citric acid, polyether modified silicone oil, and deionized water were mixed to prepare a second slurry. In the second slurry, by weight percentage, polyvinyl alcohol accounts for 1.5%, citric acid accounts for 0.7%, polyether modified silicone oil accounts for 1.6%, and the balance is deionized water.

Mixing the components in a mass ratio of 97: 3 first particles having a particle size of 50 μm and gallium-aluminum alloy particles having a particle size of 5 μm are added to the second slurry to prepare a second slurry. Wherein the first particles and the gallium-aluminum alloy particles account for 45% of the total weight of the slurry.

And conveying the second slurry to a 7000 r/min high-speed liquid throwing disc to throw the slurry out by the high-speed rotating liquid throwing disc to form drops, and blowing the drops into a drying tower at 300 ℃ by using hot air at 80 ℃ so that the drops blown into the tower fall after staying for 8-10 seconds to form second particles.

Thereafter, the second particles may be heated to 400 ℃ at a heating rate of 8 ℃/min, then maintained at that temperature for 180min to remove moisture from the particles and ensure that the metallic binder can smoothly fill the pores, and then subjected to a sieving process to obtain the corrosion-resistant particles of the present inventive concept having a particle size of 60 μm as a corrosion-resistant material.

The surface of the inner wall of the iron pan was thermally sprayed by a thermal spraying process using the above-obtained anticorrosive material, thereby obtaining an anticorrosive layer having a thickness of 100 μm formed thereon.

Here, the thermal spray parameters are: current: 350A; voltage: 55V; main gas (argon) flow: 2200L/H; hydrogen flow rate: 50L/H; powder feeding air pressure: 400L/H; powder feeding amount: 55 g/min; spray distance (gun nozzle to workpiece distance): 18 cm; spraying angle: 60 degrees; workpiece temperature: at 25 ℃.

Example 2

The difference from example 1 is that: mixing the components in a mass ratio of 98.8: 1.2 first particles having a particle size of 50 μm and gallium-aluminum alloy particles having a particle size of 5 μm are added to the second slurry.

Example 3

The difference from example 1 is that: mixing the components in a mass ratio of 95.2: 4.8 first particles having a particle size of 50 μm and gallium-aluminum alloy particles having a particle size of 5 μm are added to the second slurry.

Example 4

The difference from example 1 is that: the second granules were heated to 320 ℃ at a heating rate of 8 ℃/min.

Example 5

The difference from example 1 is that: the second granules were heated to 480 ℃ at a heating rate of 8 ℃/min.

Example 6

The difference from example 1 is that: the second granules may be heated to 400 ℃ at a heating rate of 8 ℃/min and then held at that temperature for 80 min.

Example 7

The second granules may be heated to 400 ℃ at a heating rate of 8 ℃/min and then held at that temperature for 280 min.

Example 8

The difference from example 1 is that: the metal binder is bismuth tin alloy.

Comparative example 1

The difference from example 1 is that: the inner wall surface of the iron pan was thermally sprayed with the first particles having a particle size of 60 μm only by the thermal spraying process, thereby obtaining an anti-corrosion layer having a thickness of 100 μm formed thereon.

Comparative example 2

The difference from example 1 is that: mixing the components in a mass ratio of 99.2: first particles having a particle size of 50 μm of 0.8 and gallium-aluminum alloy particles having a particle size of 5 μm were added to the second slurry.

Comparative example 3

The difference from example 1 is that: mixing the components in a mass ratio of 94.8: 5.2 first particles having a particle size of 50 μm and gallium-aluminum alloy particles having a particle size of 5 μm are added to the second slurry.

Comparative example 4

The difference from example 1 is that: the second granules were heated to 260 ℃ at a heating rate of 8 ℃/min.

Comparative example 5

The difference from example 1 is that: the second granules were heated to 540 ℃ at a heating rate of 8 ℃/min.

Comparative example 6

The difference from example 1 is that: the second granules may be heated to 400 ℃ at a heating rate of 8 ℃/min and then held at that temperature for 50 min.

Comparative example 7

The difference from example 1 is that: the second granules may be heated to 400 ℃ at a heating rate of 8 ℃/min and then held at that temperature for 320 min.

The test standards of the anti-corrosion test of the anti-corrosion layers obtained in the above examples 1 to 8 and comparative examples 1 to 7 are as follows: referring to a corrosion resistance testing method of a plating pot in GB/T32432, the longer the time is, the better the corrosion resistance is. 0.5H was recorded once. The test results are shown in the following table.

As can be seen from the above table, the corrosion prevention layer formed by the corrosion prevention particles according to the exemplary embodiments of the inventive concept has an advantage of better corrosion resistance.

While one or more embodiments of the present invention have been described, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims

1. An anti-corrosive material comprising a plurality of anti-corrosive particles, characterized in that each anti-corrosive particle comprises a non-metallic material and a metallic binder,

wherein the non-metallic material comprises at least one of an oxide and a nitride of a metal and/or at least one of an oxide and a nitride of a semi-metal.

2. The anti-corrosion material of claim 1, wherein each anti-corrosion particle further comprises a metallic material,

wherein the metallic material comprises at least one of titanium, titanium alloy, stainless steel, nickel, and nickel alloy.

3. The corrosion protection material of claim 1, wherein said non-metallic material comprises AT least one of titanium oxide, titanium nitride, titanium carbide, triiron tetroxide, iron oxide, aluminum oxide, AT composite material, and silicon oxide.

4. The anti-corrosion material according to claim 1, wherein said metallic binder comprises at least one of a gallium-aluminum alloy, a gallium-bismuth alloy, a gallium-tin alloy, a gallium-indium alloy, and a bismuth-tin alloy.

5. The corrosion protection material of claim 1 wherein each corrosion protection particle further comprises an alcohol binder.

6. A method of manufacturing an anti-corrosion material comprising a plurality of anti-corrosion particles, characterized in that the method comprises:

preparing first particles by using a non-metallic material and an alcohol binder;

preparing second particles by using the first particles, the metal binder and the alcohol binder,

7. The method of claim 6, wherein the non-metallic material comprises AT least one of titanium oxide, titanium nitride, titanium carbide, triiron tetroxide, iron oxide, aluminum oxide, AT composite, and silicon oxide.

8. The method of claim 6, wherein the metallic binder comprises at least one of a gallium aluminum alloy, a gallium bismuth alloy, a gallium tin alloy, a gallium indium alloy, and a bismuth tin alloy.

9. The method of claim 6, wherein the first particles further comprise a metallic material, the metallic material comprising at least one of titanium, a titanium alloy, stainless steel, nickel, and a nickel alloy, and the metallic material comprises 0% to 30% by weight of the total weight of the first particles.

10. The method of claim 6, wherein the mass ratio of the first particles to the metallic binder is between 99: 1-19: 1, in the above range.

11. The method according to claim 6, further comprising a step of sintering the second particles, wherein a sintering end point temperature in the sintering step is in a range of 300 ℃ to 500 ℃ and a holding time is in a range of 1h to 5 h.

12. The method of claim 6, wherein the size of the metallic binder is in the range of 1 μm to 10 μm.

13. A non-stick cookware characterized in that it comprises an anti-corrosion layer formed on the surface of a substrate, the anti-corrosion layer being formed using anti-corrosion particles formed by the method of any one of claims 6 to 12.