CN105924235A - Carbonaceous material wide-temperature-range antioxidant repair coating and repairing and preparing methods thereof - Google Patents
Carbonaceous material wide-temperature-range antioxidant repair coating and repairing and preparing methods thereof Download PDFInfo
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- CN105924235A CN105924235A CN201610304965.9A CN201610304965A CN105924235A CN 105924235 A CN105924235 A CN 105924235A CN 201610304965 A CN201610304965 A CN 201610304965A CN 105924235 A CN105924235 A CN 105924235A
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- coating
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- repair
- carbonaceous material
- temperature
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
Abstract
The invention relates to a carbonaceous material wide-temperature-range antioxidant repair coating and repairing and preparing methods thereof. Silica sol, phenolic resin or silicon resin serves as a binder of the repair coating, silicon, carbide and oxide serve as high-temperature-resisting filler, and the materials are fully dispersed and mixed to prepare a boron-silicon repair material. By the adoption of repair material coating and low-temperature curing technologies, in-situ low-temperature quick repair of an antioxidant coating defect area can be achieved. The process is simple, period is short, coating repair can be achieved at low temperature, and high-temperature thermal treatment is not needed. A formed repair layer can be well bonded with a base material and an original coating, and antioxidant function can be realized within a wide temperature range (500-1600 DEG C).
Description
Technical field
The present invention relates to a kind of repair coating and method for repairing and mending, particularly relate to a kind of carbonaceous material width temperature range
Antioxidation repair coating and method for repairing and mending.
Background technology
Carbonaceous material with carbon/carbon compound material, carbon/composite material of silicon carbide etc. as representative is with the high temperature of its excellence
Mechanical property, thermophysical property, be widely used in multiple fields such as Aeronautics and Astronautics.
Prepare ORC on carbonaceous material surface and realize its long-time use in high temperature aerobic environment
Effective way.Coating production is usually reaction sintering, chemical vapour deposition technique, plasma spraying method
Deng.Owing to carbonaceous material base material is softer, assembling, transport, use during, component surface coating is easier to
Damaged formation holiday.Traditional coating production is both needed to through pyroprocess, to being complete assembling
The product that overall cannot carry out high-temperature process is difficult to carry out repairing.
At present, the research in terms of carbonaceous material patching coating discloses less, and main research concentrates on the U.S. to boat
The repairing technique of it resistance of airplane oxide covering, but ins and outs are the openest.In prior art, repairing of coating
Compensating method is the most immature, and the high-temperature stability of repair coating is poor, it is less to be suitable for temperature range, it is still necessary to improves and repaiies
Mend the feasibility of technique, improve the reliability of repair coating, expand the scope of application of repair coating.For solving
The problems referred to above, the present invention uses simple low temperature repair technology, it is achieved that the original position of wide temperature range ORC,
Low temperature, Rapid-Repair.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art, it is provided that a kind of antioxidation repair coating,
This repair coating is well combined with matrix, has the widest temperature range antioxygenic property.
Another object of the present invention is to provide one to realize holiday original position, low temperature, the quickly side of repairing
Method.
It is a further object of the present invention to provide the low temperature of a kind of ORC, fast preparation method.
The above-mentioned purpose of the present invention is achieved the most by following technical solution: a kind of carbonaceous material width temperature
Territory antioxidation repair coating, forms the material for repairing of described repair coating by following compound and mass percent group
Become:
Binding agent 20%～40%,
Silicon 20%～50%,
Boron carbide 5%～20%,
Carborundum 0%～20%,
Diboron trioxide 0%～10%,
Dehydrated alcohol 5%～40%.
Described binding agent is Ludox, phenolic resin or silicones.
The particle size range of described silicon, boron carbide and carborundum is 1 μm～50 μm, and purity is not less than 99%.
A kind of method for repairing and mending of carbonaceous material width temperature range antioxidation repair coating, step is as follows:
(1) use dehydrated alcohol that carbonaceous material local defect region is carried out, it is judged that the degree of depth of fault location
Whether more than 1mm, if being more than, then perform step (2)；Otherwise perform step (3)；
(2) according to binding agent 20%～40%, silicon 30%～50%, boron carbide 5%～10%, carborundum
10%～20%, the proportioning configuration putty type material for repairing of dehydrated alcohol 5%～20%, uses knife coating to carry out table
Face is filled, and performs step (3) afterwards；
(3) according to binding agent 20%～30%, silicon 20%～40%, boron carbide 5%～20%, carborundum
0%～10%, diboron trioxide 0%～10%, dehydrated alcohol 20%～40% proportioning preparation solid concentration low,
The material for repairing that viscosity is little, uses spread coating or spraying process that material for repairing is coated uniformly on carbonaceous material coating local
Fault location, covers defect and defect peripheral region, it is ensured that repair coating is uniform, smooth.
Process and after surface drying in step (3), used baking the affected part after applying some drugs rifle, quartz lamp or baking oven to realize coating area
The heating in territory.
The maximum heating temperature of curing process is (120～200) ± 10 DEG C, and heating total time is 4h～10h.
A kind of preparation method of carbonaceous material width temperature range ORC, step is as follows:
(1) according to binding agent 20%～30%, silicon 20%～40%, boron carbide 5%～20%, carborundum
0%～10%, the ratio range preparation antioxidation of diboron trioxide 0%～10%, dehydrated alcohol 20%～40%
Coating paste；
(2) spread coating or spraying process is used to be coated uniformly on by above-mentioned coating paste and need to carry out at surface oxidation-resistant
The body surface of reason.
Having processed in step (2) and be heating and curing after surface drying, the maximum heating temperature of curing process is
(120～200) ± 10 DEG C, heating total time is 4h～10h.
Coating layer thickness 50 μm coated in described step (2)～300 μm.
The coating layer thickness optimized is 100 μm～200 μm.
The present invention compared with prior art has the advantages that
Present invention achieves different substrate materials, different profile carbonaceous material component surface ORC quick,
Low temperature, the repairing of original position.
Ludox, phenolic resin and silicones in repair coating of the present invention are respectively provided with good bonding
Property, below 200 DEG C, dry solidification can make ceramic powder closely bond, and advantageously forms and combines in matrix
Good ceramics is combined thin layer.Silica sol binder under the high temperature conditions without organic decomposition, volatilization,
The high-temperature oxidation resistance of repair coating is more stable；The caking property of phenolic resin and silicones is relatively strong, high temperature ring
Under border, solid phase residual rate is high, and repair coating is more excellent with the adhesion of base material, it is therefore desirable to higher greasy of viscosity
Subtype material for repairing is typically with phenolic resin or silicones as binding agent.
Repair coating of the present invention with refractory ceramics powder such as silicon, boron carbide, carborundums as filler,
Actually used hot environment realizes sintering reaction and the surface boron silica glass glaze levelling process of coating.In
Under the oxidation environment of low temperature region, the diboron trioxide that original diboron trioxide and oxidation reaction produce, can be
Repair coating outer surface forms glass glazings.Under the oxidation environment of high-temperature-range, original silicon dioxide and oxygen
Change the silicon dioxide that reaction is formed, glass glazings can be formed at repair layer outer surface.Therefore, this repair coating
(500 DEG C～1600 DEG C) Pyrex glaze layer can be formed, it is achieved carbonaceous material in the range of wider temperature range
The antioxidant defense of base material.
Painting method of the present invention can realize the coating that material for repairing is uniform, smooth, to holiday class
The adaptability of type is relatively strong, and coating thickness and number of times are relatively easy to control, and process implementing is simple, effectively.
Baking the affected part after applying some drugs rifle of the present invention can realize the repair layer heating of smaller area, solidification, general baking the affected part after applying some drugs rifle
Leaving air temp can reach more than 500 DEG C, heating technological requirement can be met.Quartz lamp can realize bigger
The repair layer heating in region, solidification, can meet heating technological requirement.
Carbon/carbon compound material repair coating of the present invention is at 800 DEG C, static oxidation environment under atmospheric environment
Middle examination 30min, coating is intact, matrix non-oxidation；At 1100 DEG C, static oxidation environment under atmospheric environment
Middle examination 30min, coating is intact, matrix non-oxidation；At 1500 DEG C, static oxidation environment under atmospheric environment
Middle examination 30min, coating is intact, matrix non-oxidation；At 1600 DEG C, static oxidation environment under atmospheric environment
Middle examination 30min, coating is intact, matrix non-oxidation；At 1MW/m2Arc tunnel environment is examined 600s,
Coating is intact, matrix non-oxidation.
Repair coating of the present invention and base material adhesion are relatively strong, case hardness is higher.Use the party's legal system
Standby carbon/carbon composite material base material repair layer bond quality (cross-hatching) is not less than 2 grades.
Accompanying drawing explanation
Fig. 1 is the preparation flow figure of width temperature range antioxidation repair coating of the present invention；
Detailed description of the invention
A kind of wide temperature range antioxidation repair coating, the repair coating described in formation includes high temperature resistant binder and fills out
Material.Described high temperature resistant binder is Ludox, phenolic resin or silicones；Described filler is silica flour, carbon
Change boron powder, carborundum powder and diboron trioxide etc., wherein, the pottery such as silica flour, boron carbide powder and carborundum powder
The particle size range of powder is 1 μm～50 μm, and purity is not less than 99%.
In above-mentioned repair coating, the mass percentage content of each component is: Ludox, phenolic resin or silicon
Resin 20%～40%, silicon 20%～50%, boron carbide 5%～20%, carborundum 0%～20%, three oxidations two
Boron 0%～10%, dehydrated alcohol 5%～40%, described each component proportion sum is 100%.Material proportion can root
Formulating according to the real needs of repairing area, slurry viscosity can be adjusted by binding agent and dehydrated alcohol content
Joint.Above material dispersion is mixed, is configured to borosilicate system material for repairing.
As it is shown in figure 1, mending course uses dehydrated alcohol carbonaceous material local defect region is carried out,
Then the material for repairing that said method is prepared uniformly is brushed at carbonaceous material local defect, with specific reference to defect
Size be handled differently: if the degree of depth of fault location more than 1mm, such as blind hole, dell, groove etc., is then prepared
The putty type material for repairing that solid concentration is high, viscosity is big, uses knife coating to carry out surface filling, then prepares solid phase
The material for repairing (if less than 1mm, the most directly using this material for repairing to process) that content is low, viscosity is little, uses brush
Material for repairing is coated uniformly at carbonaceous material coating local defect by coating or spraying process, covers defect and defect
Peripheral region, it is ensured that repair coating is uniform, smooth.
Above-mentioned solid phase content is high, viscosity is big putty type material for repairing component and mass percent are as follows:
Binding agent 20%～40%,
Silicon 30%～50%,
Boron carbide 5%～10%,
Carborundum 10%～20%,
Dehydrated alcohol 5%～20%.
Component and the mass percent of the material for repairing that solid concentration is low, viscosity is little are as follows:
Binding agent 20%～30%,
Silicon 20%～40%,
Boron carbide 5%～20%,
Carborundum 0%～10%,
Diboron trioxide 0%～10%,
Dehydrated alcohol 20%～40%.
After surface drying, the heating tools such as baking the affected part after applying some drugs rifle, quartz lamp, baking oven are used to realize the heating of repairing area, Gu
The maximum heating temperature of chemical industry sequence is 120 DEG C～200 DEG C, and heating total time is 4h～10h, is formed and ties with matrix
Close the preferable ceramics of quality and be combined thin layer, complete the preparation of wide temperature range antioxidation repair coating.
It addition, for the field that can meet its antioxygenic property requirement, can directly use above-mentioned preparation solid phase
The preparation method of the material for repairing that content is low, viscosity is little carries out quick large area ORC and prepares.Coating
Preparation and the coating processes of slurry are same as above, and coating layer thickness is 50 μm～300 μm, the thick coating of optimization
Degree is 100 μm～200 μm, and curing mode can be carried out in the way of heating to use in baking oven, completes antioxidation
The low temperature of coating, quickly prepare.
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail:
For the oxidation resistant carbon material of repairing to be coated, look first at its holiday, it is judged that coating damage
Degree and scope, according to profile feature and the technology requirement of product surface to be repaired, determine repair coating system
And method for repairing and mending.
Embodiment 1
The degree of depth for fault location is more than the local coatings defects such as the blind hole of 1mm, dell, groove, and preparation is solid
The putty type material for repairing that phase content is high, viscosity is big.Choose following material proportion: phenolic resin 20%, silicon 50%,
Boron carbide 5%, carborundum 20%, dehydrated alcohol 5%.Formed after the sufficient dispersion mixing of above-mentioned material and repair
Feed supplement.Use knife coating that material for repairing is coated to region to be repaired, carbonaceous material surface is filled with.
Then, fill area field surface is brushed by slurry further that use viscosity relatively low.Choose following material to join
Ratio: Ludox 30%, silicon 25%, boron carbide 20%, diboron trioxide 5%, dehydrated alcohol 20%.Treat
Material for repairing is formed after the sufficient dispersion mixing of above-mentioned material.Spread coating or spraying process is used to be coated to by material for repairing
Region to be repaired, makes the former coating of repair coating and periphery flush.
After repair coating reaches predetermined thickness, the most at room temperature surface drying 3h, then use quartz lamp to repairing
Region is heating and curing, and can use following curing process system:
Freely it is warming up to 100 ± 10 DEG C (insulation 2 ± 0.25h) from room temperature, is more freely warming up to 150 ± 10 DEG C of (guarantors
Temperature 2 ± 0.25h), after being the most freely warming up to 200 ± 10 DEG C (insulation 2 ± 0.25h), finally freely lower the temperature.
Material for repairing, after being fully dried, solidifying, completes the preparation of repair coating.
To the sample using embodiment 1 to carry out patching coating, at 1MW/m2Arc tunnel environment is examined
There is loss, matrix non-oxidation in the top layer of 600s, only repair coating.
Embodiment 2
The degree of depth for fault location is more than the local coatings defects such as the blind hole of 1mm, dell, groove, and preparation is solid
The putty type material for repairing that phase content is high, viscosity is big.Choose following material proportion: silicones 35%, silicon 35%,
Boron carbide 10%, carborundum 10%, dehydrated alcohol 10%.Formed after the sufficient dispersion mixing of above-mentioned material
Material for repairing.Knife coating is used material for repairing to be coated to region to be repaired, by blind hole, dell, groove filling-in.
Then, fill area field surface is brushed by slurry further that use viscosity relatively low.Choose following material to join
Ratio: silicones 20%, silicon 30%, boron carbide 5%, carborundum 5%, diboron trioxide 5%, anhydrous second
Alcohol 35%.Material for repairing is formed after the sufficient dispersion mixing of above-mentioned material.Spread coating or spraying process is used to repair
Feed supplement is coated to region to be repaired, makes the former coating of repair coating and periphery flush.
After repair coating reaches predetermined thickness, the most at room temperature surface drying 1h, then use baking the affected part after applying some drugs rifle to repairing
Region is heating and curing, and can use following curing process system:
Start freely to be warming up to 80 ± 10 DEG C (insulation 1 ± 0.25h) from room temperature, the most freely heat up three times,
Respectively reach temperature 100 ± 10 DEG C (insulation 1 ± 0.25h), 120 ± 10 DEG C (insulation 1 ± 0.25h), 160 ± 10 DEG C
(insulation 1 ± 0.25h), finally freely lowers the temperature.
Material for repairing, after being fully dried, solidifying, completes the preparation of repair coating.
To the sample using embodiment 2 to carry out coating, carry out 800 DEG C, 1100 DEG C, 1500 DEG C of static oxidations
Examination 10min, specimen surface coating is intact, and coating failure does not occurs in mend.
Embodiment 3
The degree of depth for fault location is more than the local coatings defects such as the blind hole of 1mm, dell, groove, and preparation is solid
The putty type material for repairing that phase content is high, viscosity is big.Choose following material proportion: silicones 25%, silicon 40%,
Boron carbide 5%, carborundum 15%, dehydrated alcohol 15%.Formed after the sufficient dispersion mixing of above-mentioned material
Material for repairing.Use blade coating combine brush method material for repairing is coated to region to be repaired, by blind hole, dell,
Groove filling-in.
After completing repair coating coating, the most at room temperature surface drying 1h, then use quartz lamp to repairing area
It is heating and curing, can use following curing process system:
Start freely to be warming up to 100 ± 10 DEG C (insulation 2 ± 0.25h) from room temperature, the most freely heat up twice,
Respectively reach temperature 120 ± 10 DEG C (insulation 2 ± 0.25h), 160 ± 10 DEG C (insulation 2 ± 0.25h), finally freedom
Cooling.
Material for repairing, after being fully dried, solidifying, completes the preparation of repair coating.
To the sample using embodiment 3 to carry out coating, carry out 1500 DEG C of static oxidation examination 30min, sample
Face coat is intact, and coating failure does not occurs in mend.
Embodiment 4
For the Large area coatings defect without dell, groove etc., it is possible to use more low viscous slurry.Choose
Following material proportion: Ludox 20%, silicon 35%, boron carbide 15%, diboron trioxide 2%, anhydrous second
Alcohol 28%.Material for repairing is formed after the sufficient dispersion mixing of above-mentioned material.Spread coating is used to be coated by material for repairing
To region to be repaired, coating number of times determines according to the thickness of the thickness needed for repair coating and every layer, typically needs
The former coating of repair coating and periphery is wanted to flush.
After repair coating reaches predetermined thickness, the most at room temperature surface drying 2h, then use baking oven to patch area
Territory is heating and curing, and can use following curing process system:
Start freely to be warming up to 60 ± 10 DEG C (insulation 1 ± 0.25h) from room temperature, the most freely heat up four times,
Respectively reach temperature 80 ± 10 DEG C (insulation 1 ± 0.25h), 100 ± 10 DEG C (insulation 1 ± 0.25h), 120 ± 10 DEG C
(insulation 1 ± 0.25h), 140 ± 10 DEG C (insulation 1 ± 0.25h), finally freely lower the temperature.
Material for repairing, after being fully dried, solidifying, completes the preparation of repair coating.
To the sample using embodiment 4 to carry out patching coating, at 1MW/m2Arc tunnel environment is examined
600s, repair coating did not lost efficacy, matrix non-oxidation.
Embodiment 5
Carbonaceous material exemplar for wide temperature range ORC to be prepared, it is possible to use more low viscous coating
Slurry.Choose following material proportion: phenolic resin 20%, silicon 25%, boron carbide 15%, dehydrated alcohol 40%.
Coating paste is formed after the sufficient dispersion mixing of above-mentioned material.Use spread coating that coating paste is coated to carbon
Material sample surfaces, coating number of times determines according to the thickness of the thickness needed for repair coating and every layer, total thickness
Degree is about 150 μm.
After coating reaches predetermined thickness, the most at room temperature surface drying 1h, then use baking oven that sample is added
Heat cure, can use following curing process system:
Start freely to be warming up to 60 ± 10 DEG C (insulation 2 ± 0.25h) from room temperature, the most freely heat up twice,
Respectively reach temperature 120 ± 10 DEG C (insulation 2 ± 0.25h), 180 ± 10 DEG C (insulation 2 ± 0.25h), finally freedom
Cooling.
Sample, after being fully dried, solidifying, completes the preparation of repair coating.
To using embodiment 5 to carry out sample prepared by coating, coating bond quality is 1 grade, carries out 1600 DEG C
Static oxidation examination 30min, specimen surface coating is intact, coating failure does not occurs.
The present invention is unspecified partly belongs to general knowledge as well known to those skilled in the art.
Claims (10)
1. a carbonaceous material width temperature range antioxidation repair coating, it is characterised in that: form described repair coating
Material for repairing be made up of following compound and mass percent:
Binding agent 20%～40%,
Silicon 20%～50%,
Boron carbide 5%～20%,
Carborundum 0%～20%,
Diboron trioxide 0%～10%,
Dehydrated alcohol 5%～40%.
Carbonaceous material width temperature range antioxidation repair coating the most according to claim 1, it is characterised in that:
Described binding agent is Ludox, phenolic resin or silicones.
Carbonaceous material width temperature range antioxidation repair coating the most according to claim 1, it is characterised in that:
The particle size range of described silicon, boron carbide and carborundum is 1 μm～50 μm, and purity is not less than 99%.
4. the method for repairing and mending of a carbonaceous material width temperature range antioxidation repair coating, it is characterised in that step is as follows:
(1) use dehydrated alcohol that carbonaceous material local defect region is carried out, it is judged that the degree of depth of fault location
Whether more than 1mm, if being more than, then perform step (2)；Otherwise perform step (3)；
(2) according to binding agent 20%～40%, silicon 30%～50%, boron carbide 5%～10%, carborundum
10%～20%, the proportioning configuration putty type material for repairing of dehydrated alcohol 5%～20%, uses knife coating to carry out table
Face is filled, and performs step (3) afterwards；
(3) according to binding agent 20%～30%, silicon 20%～40%, boron carbide 5%～20%, carborundum
0%～10%, diboron trioxide 0%～10%, dehydrated alcohol 20%～40% proportioning preparation solid concentration low,
The material for repairing that viscosity is little, uses spread coating or spraying process that material for repairing is coated uniformly on carbonaceous material coating local
Fault location, covers defect and defect peripheral region, it is ensured that repair coating is uniform, smooth.
The repairing side of a kind of carbonaceous material width temperature range antioxidation repair coating the most according to claim 4
Method, it is characterised in that: process and after surface drying in step (3), used baking the affected part after applying some drugs rifle, quartz lamp or baking
Case realizes the heating of coating zone.
The repairing side of a kind of carbonaceous material width temperature range antioxidation repair coating the most according to claim 5
Method, it is characterised in that: the maximum heating temperature of curing process is (120～200) ± 10 DEG C, heats total time
For 4h～10h.
7. the preparation method of a carbonaceous material width temperature range ORC, it is characterised in that step is as follows:
(1) according to binding agent 20%～30%, silicon 20%～40%, boron carbide 5%～20%, carborundum
0%～10%, the ratio range preparation antioxidation of diboron trioxide 0%～10%, dehydrated alcohol 20%～40%
Coating paste；
(2) spread coating or spraying process is used to be coated uniformly on by above-mentioned coating paste and need to carry out at surface oxidation-resistant
The body surface of reason.
The preparation method of a kind of carbonaceous material width temperature range ORC the most according to claim 7, its
It is characterised by: processed in step (2) and be heating and curing after surface drying, the highest heating of curing process
Temperature is (120～200) ± 10 DEG C, and heating total time is 4h～10h.
The preparation method of a kind of carbonaceous material width temperature range ORC the most according to claim 7, its
It is characterised by: coating layer thickness 50 μm coated in described step (2)～300 μm.
The preparation method of a kind of carbonaceous material width temperature range ORC the most according to claim 9,
It is characterized in that: the coating layer thickness of optimization is 100 μm～200 μm.
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| CN201610304965.9A CN105924235B (en) | 2016-05-10 | 2016-05-10 | A kind of anti-oxidant repair coating of the wide temperature range of carbonaceous material and repairing, preparation method |
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| CN110304946A (en) * | 2019-08-02 | 2019-10-08 | 航天特种材料及工艺技术研究所 | A kind of wide temperature range antioxidant coating on ceramic matric composite surface and preparation method thereof |
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