CN107893207A - A kind of method for preparing pore self-sealing self-lubricating coat in use in situ - Google Patents
A kind of method for preparing pore self-sealing self-lubricating coat in use in situ Download PDFInfo
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- CN107893207A CN107893207A CN201711155845.8A CN201711155845A CN107893207A CN 107893207 A CN107893207 A CN 107893207A CN 201711155845 A CN201711155845 A CN 201711155845A CN 107893207 A CN107893207 A CN 107893207A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The present invention is a kind of method for preparing pore self-sealing self-lubricating coat in use in situ.This method comprises the following steps：Substrate material surface pretreatment, the preparation of transition zone and the preparation of pore self-sealing self-lubricating coat in use in situ, defective locations are filled up by using the resin particle with lubricity, pass through the method for two-way synchronous powder feeding system, resin particle can produce the effect of self-lubricating in the ceramic resin composite coating that plasma spraying is prepared, hole or crackle in hot environment in closing filling ceramic coating, improve its wear-resisting, corrosion resisting property.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of prepare pore self-sealing in situ, the method for self-lubricating coat in use.
Background technology
Ceramic coating has high hardness and good wearability, and good corrosion resistance is widely used as decorating
Coating, wear-resistant coating, corrosion-resistant finishes.Metal surface, which prepares ceramic coating, can improve metallic matrix wearability and corrosion resistance,
At present, many researchers by reaction thermal spraying, chemical vapor deposition, physical vapour deposition (PVD), the lonely plating of electricity, etc. technology be prepared for applying
Layer, and the deposition process of coating, microstructure and performance are studied.The painting thickness prepared using technologies such as CVD, PVD
Spend relatively thin, it is suppressed that the performance of its characteristic property；And thicker coating can be prepared using plasma spraying reaction technology, but wait
The distinctive microdefect of plasma spray is difficult to eliminate, and limits the performance of the characteristic property of coating.Problems be present now：From
Wear angle is said：Ceramic coating poor toughness, the fatigue rupture in abrasion cause abrasive wear, can heavy wear metallic rubbing pairs.
Said from corrosion angle：Because of the process characteristic of spraying itself, microcosmic through hole is unavoidably produced, through hole turns into corrosive medium and penetrates into base
The passage of body, the corrosion resistance of coating is caused to be decreased obviously.
The content of the invention
The technical purpose of the present invention is for the existing abrasion of homogenous material and etching problem, there is provided one kind is suitable to spray
The method for preparing composite coating applied.The present invention fills up defective bit using the resin particle (PEEK, PTFE etc.) with lubricity
Put, by the method for two-way synchronous powder feeding system, resin particle can be with the ceramic-resin composite coating that plasma spraying is prepared
The effect of self-lubricating is produced, hole or crackle in hot environment in closing filling ceramic coating, it is wear-resisting, anti-corrosion to improve its
Performance.Solve two kinds of powder and the inhomogenous problem of powder when mixing；By the powder feeding position for changing resin-oatmeal
To change its heat time in flame stream, solve the problems, such as it at high temperature for a long time by thermal decomposition.
The technical scheme is that：
A kind of method for preparing pore self-sealing-self-lubricating coat in use in situ, this method comprise the following steps：
(1) substrate material surface pre-processes：
Successively using acetone and ethanol washing substrate surface, blasting treatment is then carried out, blasting treatment finally obtains surface
Roughness Ra is 3.0-5.0 μm；
(2) preparation of transition zone：
The pre-heat treatment is carried out to matrix material with spray gun, preheating temperature is 100~200 DEG C, and preheating time is 2~3 minutes；
Then nickel alclad transition zone, transition region thickness 0.1-0.2mm are sprayed to substrate surface using air plasma spraying equipment again；
(3) preparation of pore self-sealing-self-lubricating coat in use in situ：
Plasma sprayed ceramic powder and resin-oatmeal are carried out using the method for two-way synchronous powder feeding system on transition zone, made pottery
Porcelain-resin compounded coating, coating layer thickness 0.3-0.4mm；
Wherein, Plasma Spray Parameters are：Voltage：70~90V；Electric current：400~600A；Ceramic powder powder feeding gas (N2) stream
Amount：0.5-0.7L/min；Resin-oatmeal powder feeding gas (N2) flow：0.3-0.5L/min；Spray distance：90~100mm；Minor arc gas argon
Throughput：2000~3000L/h；Auxiliary gas nitrogen flow：40~60L/min；Resin-oatmeal powder feeding pipe and the distance of spray gun are 60-
The angle angle beta of 90mm, resin-oatmeal powder feeding pipe and flame stream is 60 ° -90 °；
The granule size of the ceramic powder is 40~70 μm, and the granule size of resin-oatmeal is 50~70 μm.
The material of described ceramic powder is particularly preferred as Al2O3、ZrO2With Ti powder.
Described resin-oatmeal is preferably polyether-ether-ketone, polytetrafluoroethylene (PTFE) or epoxy resin.
Described matrix material is specially carbon steel, stainless steel, heat resisting steel or aluminium alloy.
The present invention substantive distinguishing features be：
The present invention uses nano ceramics and resin compounded, and nanometer pottery is prepared in workpiece surface using the method for plasma spraying
Porcelain is base, and organic resin is the composite coating of the second phase, by the low-friction coefficient and high-ductility of organic material, realizes that coating is ground
Self-lubricating and pore self-sealing during damage, play a part of anti-attrition and suppress to corrode；By the high tenacity of organic material, realization is received
Rice toughening and organic material toughening combine, intensified ceramic material；
Meanwhile the inhomogenous problem of powder when mixing to solve two kinds of powder, the present invention is by double
The method of road synchronous powder feeding system, change its heat time in flame stream by changing the powder feeding position of resin-oatmeal, solve it
The problem of long-time is by thermal decomposition at high temperature.Using different road synchronous powder feeding system method (its have on axial location two individually
Radial direction powder feeding pipe, one be adjacent nozzle powder feeding pipe, be responsible for ceramic powder supply；Another is can to adjust in the axial direction
Pitch from powder-feeding mouth, the supply of resin charge powder) prepare pore self-sealing in situ, self-lubricating coat in use.
The defects of present invention can fill up coating using the resin particle (PEEK, PTFE etc.) with lubricity position.Tree
Fat particle can produce the effect of self-lubricating in the ceramic-resin composite coating that plasma spraying is prepared, in hot environment
Hole or crackle in middle closing filling ceramic coating, improve its wear-resisting, corrosion resisting property.
Beneficial effects of the present invention are：
The ceramic-resin composite coating that the present invention is prepared by plasma spraying two-way synchronous powder feeding system, avoids traditional spray
The larger fragility of ceramic coating is applied, there is good wear and corrosion behavior, resin particle moistening certainly in ceramic-resin composite coating
Cunning acts on, the porosity of the ceramic coating of reduction, improves the toughness of ceramic coating.Obtained ceramic-resin composite coating knot
Structure is fine and close, resin particle distribution disperse, can also be by controlling resin-oatmeal powder feeding gas (N2) flow controls the compound painting of ceramic-resin
The content of resin in layer.
By taking embodiment 1-3 as an example, composite coating structure is fine and close in embodiment 1, the crackle often having in no TiN coatings, reduces
Its porosity；The corrosion potential of composite coating is by single ZrO in embodiment 22- the 561.9mV of coating is increased to -509mV, rotten
Current density is lost by 14.32 μ Acm-2It is reduced to 7.65 μ Acm-2；It is compound in embodiment 3 under conditions of load is 300N
The wear extent of coating and single Al2O3The wear extent of coating, which is compared, reduces 34% or so.
Brief description of the drawings：
Fig. 1 is two-way powder feeding experimental provision schematic diagram；Wherein, Fig. 1 a are two-way powder feeding experimental provision front view；Fig. 1 b are
Two-way powder feeding experimental provision top view；
Fig. 2 is the composite coating SEM shape appearance figures obtained in embodiment 1；Wherein, Fig. 2 a are composite coating plan；Fig. 2 b
For the sectional view of composite coating；
Fig. 3 is ZrO in embodiment 22Change of the coating with corrosion potential of the composite coating in 3.5% simulated seawater with the time
Change curve；
Fig. 4 is composite coating and ZrO in embodiment 22The dynamic potential polarization curve of coating.
Embodiment
Ceramic powder of the present invention is known commercially available prod with resin-oatmeal, and ceramic powder can be Al2O3、ZrO2Or Ti powder, grain
It is 40~70 μm to spend size；The granule size of resin-oatmeal is 50~70 μm.
The device for the double powder feedings of realization that the present invention uses is known device, (ISSN as shown in Figure 1：0257-
8972C.Mateus,S.Costil etc.Ceramic/fluoropolymer composite coatings by thermal
spraying—a modification of surface properties,Surface&Coatings Technology,
191(2005)108-118)。
Described two-way synchronous powder feeding system refers to two single radial direction powder feeding pipes on axial location, and one is adjacent spray
Rifle, it is responsible for the supply of ceramic powder；Another is in the axial direction can (it passes through coupled small cunning with angle with adjustable range
The turn of block changes its angle), the supply of resin charge powder；Adjacent spray gun is resin-oatmeal for ceramic powder powder feeding pipe, a in figure
Distance between powder feeding pipe and spray gun, it is that a powder feeding pipe is the powder feeding pipe of resin-oatmeal away from its distance；β is resin-oatmeal powder feeding pipe and flame
The angle of stream；Resin-oatmeal powder feeding place value a is 60-90mm, and angle beta is 60 ° -90 °.Spray distance be between spray gun and matrix away from
From powder feeding position is the distance between powder feeding pipe and spray gun.
Embodiment 1
A kind of preparation method of TiN-PEEK composite coatings, it includes：
(1) substrate material surface pre-processes
Successively using acetone and ethanol washing 45# steel substrates surface, blasting treatment is then carried out.Blasting treatment finally obtains
Surface roughness Ra is 3.0-5.0 μm；
(2) preparation of transition zone
The pre-heat treatment is carried out to matrix material with spray gun before spraying, preheating temperature is 150 DEG C, and preheating time is 2 minutes.So
Nickel alclad transition zone is sprayed to substrate surface using air plasma spraying equipment afterwards, its particle size is 60-70 μm, its composition
It is by weight/mass percentage composition：Ni：90%th, Al：10%., transition region thickness 0.1mm.
(3) the method plasma spraying Ti powder and PEEK powder of two-way synchronous powder feeding system are used on transition zone, obtains TiN-
PEEK composite coatings.Coating layer thickness is 0.3mm.
Plasma Spray Parameters are：Voltage：70V；Electric current：500A；Ti powder powder feeding gas (N2) flow：0.5L/min；PEEK
Powder powder feeding gas (N2) flow：0.3L/min；Spray distance：90mm；Minor arc gas argon flow amount：3000L/h；Auxiliary gas nitrogen flow：
40L/min；PEEK powder powder feeding place values a is 60mm, and angle beta is 90 °.
A and b is respectively that composite coating plane and Cross Section Morphology, as can be seen from Figure obtained compound painting is made in Fig. 2
Rotating fields are fine and close, resin particle Dispersed precipitate, the crackle often having in no TiN coatings.
Embodiment 2
A kind of ZrO2The preparation method of-PTFE composite coatings, it includes：
(1) substrate material surface pre-processes
Acetone and ethanol washing 45# steel substrates surface is respectively adopted, then carries out blasting treatment.The preceding spray gun of spraying is to base
Body material carries out the pre-heat treatment, and preheating temperature is 100 DEG C, and preheating time is 3 minutes.
(2) preparation of transition zone
Nickel alclad transition zone is sprayed to substrate surface using air plasma spraying equipment, its particle size is 60-70 μm,
Its composition is by weight/mass percentage composition：Ni：90%th, Al：10%.Obtained transition region thickness is 0.1mm.
(3) the method plasma spraying ZrO of two-way synchronous powder feeding system is used on transition zone2Powder and PTFE powder, obtain ZrO2-
PTFE composite coatings.Coating layer thickness is 0.3mm.
Plasma Spray Parameters are：Voltage：70V；Electric current：500A；ZrO2Powder powder feeding gas (N2) flow：0.5L/min；PTFE
Powder powder feeding gas (N2) flow：0.3L/min；Spray distance：100mm；Argon flow amount：3000L/h；Nitrogen flow：40L/min；
PTFE powder powder feeding place values a is 70mm, and angle beta is 60 °.
Fig. 3 is ZrO2Coating and corrosion potential versus time curve of the composite coating in 3.5% simulated seawater.From
It can be seen from the figure that, with the extension of soak time, it is in trend stable after declining that the corrosion potential of two kinds of coatings, which is all, and
The electrical potential energy of composite coating tends towards stability faster.The current potential that current potential from figure after stabilization can be seen that composite coating is higher than
ZrO2The current potential of coating, show that the addition of resin is advantageous to improve the decay resistance of coating.
The different coating parameter fitting result of table 1
Fig. 4 is composite coating and ZrO2The dynamic potential polarization curve of coating, with reference to Fig. 4 and table 1 it can be seen that composite coating
Corrosion electric current density be less than ZrO2Coating, corrosion potential are higher than ZrO2Coating, illustrate that the decay resistance of composite coating is better than
ZrO2Coating, protect the ability of steel matrix stronger.
Embodiment 3
A kind of Al2O3The preparation method of-EP composite coatings, it includes：
(1) substrate material surface pre-processes
Acetone and ethanol washing 45# steel substrates surface is respectively adopted, then carries out blasting treatment.The preceding spray gun of spraying is to base
Body material carries out the pre-heat treatment, and preheating temperature is 200 DEG C, and preheating time is 2 minutes.
(2) preparation of transition zone
Nickel alclad transition zone is sprayed to substrate surface using air plasma spraying equipment, its particle size is 60-70 μm,
Its composition is by weight/mass percentage composition：Ni：90%th, Al：10%.Transition region thickness is 0.1mm.
(3) the method plasma spraying Al of two-way synchronous powder feeding system is used on transition zone2O3Powder and EP powder, obtain Al2O3-
EP composite coatings.Coating layer thickness is 0.3mm.
Plasma Spray Parameters are：Voltage：70V；Electric current：400A；Al2O3Powder powder feeding gas (N2) flow：0.5L/min；EP
Powder powder feeding gas (N2) flow：0.3L/min；Spray distance：90mm；Argon flow amount：3000L/h；Nitrogen flow：40L/min；EP
Powder powder feeding place value a is 50mm, and angle beta is 70 °.
The composite coating that embodiment 3 is obtained carries out frictional wear experiment, and experiment is slided to mill side using using ring-block
Formula, upper friction pair for experiment block, lower friction pair be through Overheating Treatment obtain hardness be 55~65HRC GCr15 to bull ring, rub
It is link friction to wipe the secondary way of contact, rotating speed 200r/min, fraction time 30min, load 300N.The anti-wear performance of material
Weighed with the weightlessness of abrasion.Coating abrasion weight loss compares Al as can be seen from Table 22O3Coating is small, illustrate obtained ceramics-
Resin compounded coating has good anti-wear performance.
Table 2 is embodiment 3Al2O3The wear weight loss result of-EP composite coatings
Unaccomplished matter of the present invention is known technology.
Claims (5)
- A kind of 1. method for preparing pore self-sealing-self-lubricating coat in use in situ, it is characterized in that this method comprises the following steps：（1）Substrate material surface pre-processes：Successively using acetone and ethanol washing substrate surface, blasting treatment is then carried out；（2）The preparation of transition zone：The pre-heat treatment is carried out to matrix material with spray gun, preheating temperature is 100 ~ 200 DEG C, and preheating time is 2 ~ 3 minutes；Then Nickel alclad transition zone, transition region thickness 0.1-0.2mm are sprayed to substrate surface using air plasma spraying equipment again；（3）The preparation of pore self-sealing-self-lubricating coat in use in situ：Plasma sprayed ceramic powder and resin-oatmeal are carried out using the method for two-way synchronous powder feeding system on transition zone, obtain ceramics-tree Fat composite coating, coating layer thickness 0.3-0.4mm；Wherein, Plasma Spray Parameters are：Voltage：70~90V；Electric current：400~600A；Ceramic powder powder feeding gas（N2）Flow：0.5- 0.7L/min；Resin-oatmeal powder feeding gas（N2）Flow：0.3-0.5L/min；Spray distance：90~100mm；Minor arc gas argon flow amount： 2000~3000L/h；Auxiliary gas nitrogen flow：40~60L/min；Resin-oatmeal powder feeding pipe and the distance of spray gun are 60-90mm, resin-oatmeal Powder feeding pipe and the angle angle of flame stream are 60o-90o；The granule size of the ceramic powder is 40 ~ 70 μm, and the granule size of resin-oatmeal is 50 ~ 70 μm.
- 2. the method for pore self-sealing-self-lubricating coat in use in situ is prepared as claimed in claim 1, it is characterized in that described ceramic powder Material is specially Al2O3、ZrO2With Ti powder.
- 3. the method for pore self-sealing-self-lubricating coat in use in situ is prepared as claimed in claim 1, it is characterized in that described resin-oatmeal is Polyether-ether-ketone, polytetrafluoroethylene (PTFE) or epoxy resin.
- 4. the method for pore self-sealing-self-lubricating coat in use in situ is prepared as claimed in claim 1, it is characterized in that described matrix material Specially carbon steel, stainless steel, heat resisting steel or aluminium alloy.
- 5. the method for pore self-sealing-self-lubricating coat in use in situ is prepared as claimed in claim 1, it is characterized in that described blasting treatment The final surface roughness Ra that obtains is 3.0-5.0 μm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866470A (en) * | 2018-06-19 | 2018-11-23 | 扬州睿德石油机械有限公司 | A kind of preparation method of air plasma spraying alloy-ceramic laminar coating |
| CN109778104A (en) * | 2019-03-06 | 2019-05-21 | 扬州大学 | A kind of cylinder liner internal wall heat insulation and wear resistance composite coating and preparation method |
| CN109797358A (en) * | 2019-03-11 | 2019-05-24 | 河北工业大学 | A kind of preparation method of ceramic base self-lubricating composite coating |
| CN110195203A (en) * | 2019-06-18 | 2019-09-03 | 河海大学 | A kind of high anti-corrosion Fe-based amorphous composite material and preparation method and application |
| CN110230016A (en) * | 2019-06-03 | 2019-09-13 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of preparation method of pore self-sealing anti-corrosion coating |
| CN110240837A (en) * | 2019-05-24 | 2019-09-17 | 西安建筑科技大学 | It is a kind of based on black phosphorus alkene/high molecular material composite coating and preparation method thereof |
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| CN106119759A (en) * | 2016-08-30 | 2016-11-16 | 安徽克里斯特新材料有限公司 | A kind of self bonding pore self-sealing thermal spraying material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866470A (en) * | 2018-06-19 | 2018-11-23 | 扬州睿德石油机械有限公司 | A kind of preparation method of air plasma spraying alloy-ceramic laminar coating |
| CN109778104A (en) * | 2019-03-06 | 2019-05-21 | 扬州大学 | A kind of cylinder liner internal wall heat insulation and wear resistance composite coating and preparation method |
| CN109797358A (en) * | 2019-03-11 | 2019-05-24 | 河北工业大学 | A kind of preparation method of ceramic base self-lubricating composite coating |
| CN110240837A (en) * | 2019-05-24 | 2019-09-17 | 西安建筑科技大学 | It is a kind of based on black phosphorus alkene/high molecular material composite coating and preparation method thereof |
| CN110230016A (en) * | 2019-06-03 | 2019-09-13 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of preparation method of pore self-sealing anti-corrosion coating |
| CN110195203A (en) * | 2019-06-18 | 2019-09-03 | 河海大学 | A kind of high anti-corrosion Fe-based amorphous composite material and preparation method and application |
| CN110195203B (en) * | 2019-06-18 | 2021-06-22 | 河海大学 | High-corrosion-resistance iron-based amorphous composite material and preparation method and application thereof |
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Application publication date: 20180410 |