CN114031410B - 1300 ℃ high temperature resistant polymer conversion ceramic coating and preparation method thereof - Google Patents
1300 ℃ high temperature resistant polymer conversion ceramic coating and preparation method thereof Download PDFInfo
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- 238000005524 ceramic coating Methods 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920000642 polymer Polymers 0.000 title abstract description 9
- 238000006243 chemical reaction Methods 0.000 title description 2
- 238000000576 coating method Methods 0.000 claims abstract description 158
- 239000011248 coating agent Substances 0.000 claims abstract description 155
- 239000002243 precursor Substances 0.000 claims abstract description 99
- 229920001709 polysilazane Polymers 0.000 claims abstract description 25
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 63
- 239000000758 substrate Substances 0.000 claims description 37
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 34
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 29
- 239000011347 resin Substances 0.000 claims description 22
- 229920005989 resin Polymers 0.000 claims description 22
- 239000000919 ceramic Substances 0.000 claims description 18
- 239000011858 nanopowder Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000005238 degreasing Methods 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 2
- 239000011214 refractory ceramic Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000008096 xylene Substances 0.000 description 13
- 238000005507 spraying Methods 0.000 description 9
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000001680 brushing effect Effects 0.000 description 6
- 238000002791 soaking Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000002679 ablation Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010963 304 stainless steel Substances 0.000 description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62222—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic coatings
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- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
- C04B35/589—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride obtained from Si-containing polymer precursors or organosilicon monomers
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Abstract
The application provides a preparation method of a high-temperature-resistant ceramic coating and the high-temperature-resistant ceramic coating, which solve or improve the technical problem that the prior art for preparing the ceramic coating cannot meet the requirements of large-size and high-precision workpieces. The preparation method takes polysilazane as a precursor to prepare a polymer derivative ceramic coating, and the ceramic coating has the multiple properties of low cost, easy construction, high temperature resistance and corrosion resistance of the polymer coating; the high-temperature-resistant ceramic coating meets the requirements of large-size and high-precision workpieces.
Description
Technical Field
The application relates to the technical field of coatings, in particular to a preparation method of a high-temperature-resistant ceramic coating and the high-temperature-resistant coating.
Background
Metallic materials, particularly steel, special steel, stainless steel, aluminum alloy, copper alloy, titanium alloy, etc. have been widely used in various fields of production and life due to their excellent combination properties. In the use process of the metal material, high-temperature, corrosion, abrasion, impact and other service environments are often encountered, and in order to prolong the service life of the metal material and improve the use effect of the material, the physical protection of the material is generally realized by adopting a mode of preparing a coating on the surface of the material in industry. Currently, coating materials include polymeric coatings, metallic coatings, ceramic coatings. The polymer coating is generally applied in a low temperature environment, and the use temperature is not higher than 300 ℃; the metal coating is prepared by adopting the processes of chemical plating, electroplating or physical vapor deposition, and is limited by the complexity of the process and the types of the coating, so that the metal coating is popularized only in specific fields; ceramic materials have natural corrosion resistance and high temperature resistance, and ceramic materials used as coating materials have been widely popularized in various high-end manufacturing fields such as aviation, aerospace and the like in recent years.
In the prior art, the process method for preparing the ceramic coating comprises chemical vapor deposition, physical vapor deposition, plasma spraying and the like, wherein the vapor deposition process is difficult to meet the requirement of coating preparation of large-size workpieces, and the plasma spraying process is not suitable for the industrial field with high requirements on the dimensional accuracy and the surface roughness of the workpieces and cannot meet the requirements of people.
Disclosure of Invention
In view of the above, the application provides a preparation method of a high-temperature-resistant ceramic coating and a high-temperature-resistant ceramic coating, which solve or improve the technical problem that the process method for preparing the ceramic coating in the prior art cannot meet the requirements of large-size and high-precision workpieces.
According to one aspect of the application, the application provides a method for preparing a high temperature resistant ceramic coating, comprising the following steps:
step one, processing a substrate;
step two, preparing a precursor solution A;
step three, coating the precursor solution A on the surface of a substrate to prepare a first coating;
step four, preparing a precursor solution B;
step five, coating the precursor solution B on the surface of the first coating to prepare a second coating;
step six, preparing a precursor solution C;
step seven, coating the precursor solution C on the surface of the second coating to prepare a third coating;
and step eight, performing high-temperature treatment on the third coating to obtain the high-temperature-resistant ceramic coating.
In one possible implementation, the preparing the precursor solution a in the second step includes:
and mixing 10-20% by mass of polysilazane resin, 20-25% by mass of n-hexane, 30-35% by mass of xylene and 20-25% by mass of ethyl acetate to obtain the precursor solution A.
In one possible implementation, the step three of applying the precursor solution a to the surface of the substrate to obtain the first coating layer includes:
and uniformly coating the precursor solution A on the surface of a substrate to prepare the first coating.
In one possible implementation, the preparing the precursor solution B in the step four includes:
and mixing 10-20% by mass of polysilazane resin, 1-2% by mass of ceramic nano powder, 20-40% by mass of n-hexane, 20-40% by mass of dimethylbenzene and 20-40% by mass of ethyl acetate to obtain the precursor solution B.
In one possible implementation, the ceramic nanopowder comprises: b (B) 2 O 3 、Al 2 O 3 、BN、SiO 2 Any one or more than one.
In one possible implementation, the preparing the precursor solution C in the step six includes:
and mixing 10-20% by mass of polysilazane resin, 1-2% by mass of ceramic nano powder, 20-40% by mass of n-hexane, 20-40% by mass of dimethylbenzene and 20-40% by mass of ethyl acetate to obtain the precursor solution C.
In one possible implementation manner, the performing high temperature treatment on the third coating in the eighth step to obtain the high temperature resistant ceramic coating includes:
and carrying out high-temperature treatment on the third coating, wherein the treatment temperature is 500-700 ℃ and the duration is 10-30 minutes, so as to obtain the high-temperature-resistant ceramic coating.
In one possible implementation, after the precursor solution a is applied to the surface of the substrate in the third step to prepare the first coating layer, before the precursor solution B is prepared in the fourth step, the method further includes:
and curing the first coating.
In one possible implementation, the step of treating the substrate includes:
polishing, cleaning, degreasing with ethanol and drying the substrate.
According to another aspect of the application, the application provides a high temperature resistant ceramic coating prepared by the method for preparing the high temperature resistant ceramic coating.
The application provides a preparation method of a high-temperature-resistant ceramic coating and the high-temperature-resistant ceramic coating, wherein the substrate is treated; step two, preparing a precursor solution A; step three, coating the precursor solution A on the surface of a substrate to prepare a first coating; step four, preparing a precursor solution B; step five, coating the precursor solution B on the surface of the first coating to prepare a second coating; step six, preparing a precursor solution C; step seven, coating the precursor solution C on the surface of the second coating to prepare a third coating; step eight, performing high-temperature treatment on the third coating to obtain a high-temperature-resistant ceramic coating; the polymer derivative ceramic coating taking polysilazane as a precursor has the multiple properties of low cost, easy construction and high temperature resistance and corrosion resistance of the polymer coating; the high-temperature-resistant ceramic coating meets the requirements of large-size and high-precision workpieces.
Drawings
FIG. 1 shows an electron microscope image of a high temperature resistant ceramic coating in a preparation method of the high temperature resistant ceramic coating.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The application provides a preparation method of a high-temperature-resistant ceramic coating, which comprises the following steps:
step one, a substrate is treated.
Polishing, cleaning, degreasing with ethanol and drying the substrate. Wherein, the base material is selected from 304 stainless steel, 45 steel, aluminum alloy and other base materials.
And step two, preparing a precursor solution A.
Mixing 10-20% of polysilazane resin, 20-30% of n-hexane, 30-40% of dimethylbenzene and 20-30% of ethyl acetate by mass percent to obtain a precursor solution A;
the prepared precursor solution A is mainly high molecular weight solid polysilazane resin.
And thirdly, coating the precursor solution A on the surface of the substrate to prepare the first coating.
And uniformly coating the precursor solution A on the surface of the substrate in a brushing, soaking or spraying mode to prepare a first coating.
And step three, curing the first coating.
And naturally drying the first coating for 1 hour at room temperature, then placing the first coating in an oven, heating to 200-300 ℃, and preserving heat for 1-2 hours.
And step four, preparing a precursor solution B.
And mixing 10-20% by mass of polysilazane resin, 1-2% by mass of ceramic nano powder, 20-40% by mass of n-hexane, 20-40% by mass of dimethylbenzene and 20-40% by mass of ethyl acetate to obtain the precursor solution B.
One or more high temperature resistant ceramic powders with particle size less than 100 nanometers, in particular, the ceramic nano powder comprises: b (B) 2 O 3 、Al 2 O 3 、BN、SiO 2 Any one or more than one.
And fifthly, coating the precursor solution B on the surface of the first coating to prepare a second coating.
And uniformly coating the precursor solution B on the surface of the first coating in a brushing, soaking or spraying mode to prepare a second coating.
And step six, preparing a precursor solution C.
10-20% of polysilazane resin, 1-2% of ceramic nano powder, 20-40% of normal hexane, 20-40% of dimethylbenzene and 20-40% of ethyl acetate by mass percentage are mixed to obtain a precursor solution C.
And step seven, coating the precursor solution C on the surface of the second coating to prepare a third coating.
And uniformly coating the precursor solution C on the surface of the second coating in a brushing, soaking or spraying mode to prepare a third coating.
And step eight, performing high-temperature treatment on the third coating to obtain the high-temperature-resistant ceramic coating.
And carrying out high-temperature treatment on the third coating, wherein the treatment temperature is 500-700 ℃ and the duration is 10-30 minutes, so as to obtain the high-temperature-resistant ceramic coating.
By the mode, the polymer derivative ceramic coating taking polysilazane as a precursor has the multiple properties of low cost, easy construction and high temperature resistance and corrosion resistance of the polymer coating; the high-temperature-resistant ceramic coating meets the requirements of large-size and high-precision workpieces.
Example 1
The preparation method of the high-temperature-resistant ceramic coating comprises the following steps:
step 1, treating a substrate;
selecting a 304 stainless steel substrate, polishing, cleaning, degreasing by ethanol and drying the 304 stainless steel substrate;
step 2, preparing a precursor solution A;
mixing 20g of polysilazane resin, 30g of normal hexane, 30g of xylene and 20g of ethyl acetate to obtain a precursor solution A;
step 3, coating the precursor solution A on the surface of a substrate to prepare a first coating;
uniformly coating the precursor solution A which is uniformly stirred on the surface of a substrate in a soaking mode to prepare a first coating;
step 31, curing the first coating.
The first coating was allowed to naturally surface dry at room temperature for 1 hour, then placed in an oven to warm to 300 ℃ and incubated for 1 hour.
Step 4, preparing a precursor solution B;
18g of polysilazane resin, 2g of B 2 O 3 Mixing ceramic nano powder, 30g of normal hexane, 30g of xylene and 20g of ethyl acetate to obtain a precursor solution B;
step 5, coating the precursor solution B on the surface of the first coating to prepare a second coating;
and uniformly coating the precursor solution B on the surface of the first coating in a soaking mode to prepare a second coating.
Step 6, preparing a precursor solution C;
18g of polysilazane resin, 2g of B 2 O 3 Ceramic nano-powder, 30g of n-hexane, 30g of xylene, 20g of ethyl acetate were mixed to obtain a precursor solution C.
Step 7, coating the precursor solution C on the surface of the second coating to prepare a third coating;
and uniformly coating the precursor solution C on the surface of the second coating in a soaking mode to prepare a third coating.
And 8, performing high-temperature treatment on the third coating to obtain the high-temperature-resistant ceramic coating.
And (3) carrying out high-temperature treatment on the third coating, wherein the treatment temperature is 600 ℃, and the duration is 20 minutes, so as to obtain the high-temperature-resistant ceramic coating.
Example two
The preparation method of the high-temperature-resistant ceramic coating comprises the following steps:
step 1, treating a substrate;
selecting a No. 45 steel substrate, polishing, cleaning, degreasing by ethanol and drying the No. 45 steel substrate;
step 2, preparing a precursor solution A;
15g of polysilazane resin, 20g of normal hexane, 40g of xylene and 25g of ethyl acetate are mixed to obtain a precursor solution A;
step 3, coating the precursor solution A on the surface of a substrate to prepare a first coating;
uniformly coating the precursor solution A which is uniformly stirred on the surface of a substrate in a brushing mode to prepare a first coating;
step 31, curing the first coating.
The first coating was allowed to naturally surface dry at room temperature for 1 hour, then placed in an oven to warm to 200 ℃ and incubated for 2 hours.
Step 4, preparing a precursor solution B;
15g of polysilazane resin, 1g of Al 2 O 3 Mixing ceramic nano powder, 19g of normal hexane, 40g of xylene and 25g of ethyl acetate to obtain a precursor solution B;
step 5, coating the precursor solution B on the surface of the first coating to prepare a second coating;
and uniformly coating the precursor solution B on the surface of the first coating in a brushing mode to prepare a second coating.
Step 6, preparing a precursor solution C;
15g of polysilazane resin, 1g of Al 2 O 3 Ceramic nano-powder, 19g of n-hexane, 40g of xylene, 25g of ethyl acetate were mixed to obtain a precursor solution C.
Step 7, coating the precursor solution C on the surface of the second coating to prepare a third coating;
and uniformly coating the precursor solution C on the surface of the second coating by adopting a brushing mode to prepare a third coating.
And 8, performing high-temperature treatment on the third coating to obtain the high-temperature-resistant ceramic coating.
And (3) carrying out high-temperature treatment on the third coating, wherein the treatment temperature is 700 ℃, and the duration is 10 minutes, so as to obtain the high-temperature-resistant ceramic coating.
Example III
The preparation method of the high-temperature-resistant ceramic coating comprises the following steps:
step 1, treating a substrate;
selecting an aluminum alloy substrate, polishing, cleaning, degreasing with ethanol and drying the aluminum alloy substrate;
step 2, preparing a precursor solution A;
10g of polysilazane resin, 20g of normal hexane, 40g of xylene and 30g of ethyl acetate are mixed to obtain a precursor solution A;
step 3, coating the precursor solution A on the surface of a substrate to prepare a first coating;
uniformly coating the precursor solution A which is uniformly stirred on the surface of a substrate in a spraying mode to prepare a first coating;
step 31, curing the first coating.
The first coating was allowed to naturally surface dry at room temperature for 1 hour, then placed in an oven to warm to 200 ℃ and incubated for 2 hours.
Step 4, preparing a precursor solution B;
10g of polysilazane resin, 1g of BN ceramic nano powder, 20g of n-hexane, 39g of xylene and 30g of ethyl acetate are mixed to obtain a precursor solution B;
step 5, coating the precursor solution B on the surface of the first coating to prepare a second coating;
and uniformly coating the precursor solution B on the surface of the first coating in a spraying mode to prepare a second coating.
Step 6, preparing a precursor solution C;
10g of polysilazane resin, 1g of BN ceramic nano powder, 20g of n-hexane, 39g of xylene, 30g of ethyl acetate were mixed to obtain a precursor solution C.
Step 7, coating the precursor solution C on the surface of the second coating to prepare a third coating;
and uniformly coating the precursor solution C on the surface of the second coating in a spraying mode to prepare a third coating.
And 8, performing high-temperature treatment on the third coating to obtain the high-temperature-resistant ceramic coating.
And (3) carrying out high-temperature treatment on the third coating, wherein the treatment temperature is 500 ℃, and the duration is 30 minutes, so as to obtain the high-temperature-resistant ceramic coating.
Coating performance test
The film thickness test of the coating is according to GB/T13452; coating adhesion test according to the pull-apart method of GB/T5210; the high temperature resistance test of the coating adopts a mode of continuous ablation of a single point of a butane flame gun, the ablation time of stainless steel and No. 45 steel samples is 3 minutes, and the ablation time of an aluminum alloy sample is 1 minute, mainly because the melting point of the aluminum alloy is low, the aluminum alloy is immediately placed into a water tank for cooling after ablation, and the ablation-cooling process is repeated for 3 times.
TABLE 1 high temperature resistant ceramic coating test results
| Coating layer | Thickness of (L) | Binding force | Ablation time | Test results |
| Example 1 | 15~20μm | ＞1MPa | 3 min | The coating is intact |
| Example two | 10~15μm | ＞1MPa | 3 min | The coating is intact |
| Example III | 10~15μm | ＞1MPa | 1 min | The coating is intact |
Example IV
The preparation method of the high-temperature-resistant ceramic coating comprises the following steps:
step 1, treating a substrate;
selecting a stainless steel substrate, polishing, cleaning, degreasing with ethanol, and drying the stainless steel substrate;
step 2, preparing a precursor solution A;
15g of polysilazane resin, 25g of n-hexane, 35g of xylene and 10g of ethyl acetate are mixed to obtain a precursor solution A;
step 3, coating the precursor solution A on the surface of a substrate to prepare a first coating;
uniformly coating the precursor solution A which is uniformly stirred on the surface of a substrate in a spraying mode to prepare a first coating;
step 31, curing the first coating.
The first coating was allowed to naturally tack-free at room temperature for 1 hour, then placed in an oven to warm to 150 c and incubated for 1.5 hours.
Step 4, preparing a precursor solution B;
15g of polysilazane resin, 1.5g of BN ceramic nano powder, 30g of n-hexane, 30g of xylene and 30g of ethyl acetate are mixed to obtain a precursor solution B;
step 5, coating the precursor solution B on the surface of the first coating to prepare a second coating;
and uniformly coating the precursor solution B on the surface of the first coating in a spraying mode to prepare a second coating.
Step 6, preparing a precursor solution C;
15g of polysilazane resin, 1.5g of BN ceramic nano powder, 30g of n-hexane, 30g of xylene, 30g of ethyl acetate were mixed to obtain a precursor solution C.
Step 7, coating the precursor solution C on the surface of the second coating to prepare a third coating;
and uniformly coating the precursor solution C on the surface of the second coating in a spraying mode to prepare a third coating.
And 8, performing high-temperature treatment on the third coating to obtain the high-temperature-resistant ceramic coating.
And (3) carrying out high-temperature treatment on the third coating, wherein the treatment temperature is 600 ℃, and the duration is 20 minutes, so as to obtain the high-temperature-resistant ceramic coating. Wherein the prepared high-temperature-resistant ceramic coating is observed in a high-power mirror, and the specific form of the high-temperature-resistant ceramic coating is an electron microscope image of the high-temperature-resistant ceramic coating shown in figure 1.
As a second aspect of the application, a high temperature resistant ceramic coating is prepared by a method for preparing a high temperature resistant ceramic coating, wherein the prepared high temperature resistant ceramic coating has high temperature resistance, corrosion resistance, abrasion resistance and impact resistance.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (2)
1. The preparation method of the high-temperature-resistant ceramic coating is characterized by comprising the following steps:
step one, processing a substrate;
step two, preparing a precursor solution A;
the preparing of the precursor solution A in the second step comprises the following steps:
mixing 10-20% by mass of polysilazane resin, 20-25% by mass of n-hexane, 30-35% by mass of dimethylbenzene and 20-25% by mass of ethyl acetate to obtain a precursor solution A, wherein the sum of all components of the precursor A is 100%;
step three, uniformly coating the precursor solution A on the surface of a substrate to prepare a first coating; and curing the first coating;
step four, preparing a precursor solution B;
the precursor solution B includes:
mixing 10-20% of polysilazane resin, 1-2% of ceramic nano powder, 20-40% of normal hexane, 20-40% of dimethylbenzene and 20-40% of ethyl acetate by mass percent to obtain a precursor solution B;
step five, coating the precursor solution B on the surface of the first coating to prepare a second coating;
step six, preparing a precursor solution C;
the precursor solution C includes:
mixing 10-20% of polysilazane resin, 1-2% of ceramic nano powder, 20-40% of normal hexane, 20-40% of dimethylbenzene and 20-40% of ethyl acetate by mass percent to obtain a precursor solution C;
step seven, coating the precursor solution C on the surface of the second coating to prepare a third coating;
step eight, performing high-temperature treatment on the third coating to obtain a high-temperature-resistant ceramic coating;
in the eighth step, the third coating is subjected to high temperature treatment, and the preparation of the high temperature resistant ceramic coating comprises the following steps:
carrying out high-temperature treatment on the third coating, wherein the treatment temperature is 500-700 ℃ and the duration is 10-30 minutes, so as to obtain the high-temperature-resistant ceramic coating;
wherein the ceramic nano-powder comprises: b (B) 2 O 3 、Al 2 O 3 BN, or any one or more of the above.
2. The method for preparing a refractory ceramic coating according to claim 1, wherein the treating the substrate in the first step comprises:
polishing, cleaning, degreasing with ethanol and drying the substrate.
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| CN105622119A (en) * | 2015-12-31 | 2016-06-01 | 中物功能材料研究院有限公司 | Ceramic-based composite coating and preparation method thereof |
| CN106116592A (en) * | 2016-06-20 | 2016-11-16 | 中物功能材料研究院有限公司 | Refractory ceramics base composite coating and preparation method thereof |
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| CN109402615A (en) * | 2018-12-19 | 2019-03-01 | 中国人民解放军陆军装甲兵学院 | A kind of super-hydrophobic ceramic coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005042944A1 (en) * | 2005-09-08 | 2007-03-22 | Clariant International Limited | Polysilazane-containing coatings for metal and polymer surfaces |
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| CN105622119A (en) * | 2015-12-31 | 2016-06-01 | 中物功能材料研究院有限公司 | Ceramic-based composite coating and preparation method thereof |
| CN106116592A (en) * | 2016-06-20 | 2016-11-16 | 中物功能材料研究院有限公司 | Refractory ceramics base composite coating and preparation method thereof |
| CN107474733A (en) * | 2017-08-18 | 2017-12-15 | 泰山医学院 | The synthetic method of polysilazane Ceramic precursor resin and a kind of antiradar coatings |
| CN108947588A (en) * | 2018-09-21 | 2018-12-07 | 航天特种材料及工艺技术研究所 | A kind of C/SiC composite material and the antioxidant coating for the material and preparation method thereof |
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