CN102251208B - Method for preparing aluminum oxide ceramic coating on surface of resin material by plasma spraying process - Google Patents
Method for preparing aluminum oxide ceramic coating on surface of resin material by plasma spraying process Download PDFInfo
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- CN102251208B CN102251208B CN2011101841509A CN201110184150A CN102251208B CN 102251208 B CN102251208 B CN 102251208B CN 2011101841509 A CN2011101841509 A CN 2011101841509A CN 201110184150 A CN201110184150 A CN 201110184150A CN 102251208 B CN102251208 B CN 102251208B
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Abstract
The invention relates to a method for preparing an aluminum oxide ceramic coating on the surface of a resin material by a plasma spraying process, aiming at achieving the purpose of improving the usability of resin matrix composite materials. The method for preparing the aluminum oxide ceramic coating on the surface of the resin material by the plasma spraying process comprises the steps of: a, when solidifying the resin matrix composite material, uniformly spreading aluminum powder on the outermost layer of a solidifying material, and putting the solidifying material into a mold for solidifying; b, cutting the solidified resin matrix composite material into pieces in required size, and sandblasting the surface of the cut solidified resin matrix composite material by a sand blasting machine so that the surface roughness Ra of the material is 5-10 microns; c, performing plasma spraying on the sand-blasted surface of the resin matrix composite material, preparing a uniform Al transition layer, and controlling the thickness of the Al transition layer to be 50-100 microns; and d, spraying the aluminum oxide on the surface of the resin matrix composite material which has been sprayed with the Al transition layer and fully cooled. The method for preparing the aluminum oxide ceramic coating on the surface of the resin material by the plasma spraying process has the advantages of low cost, high coating preparation speed, high work efficiency, simplicity in equipment operation and convenience for maintenance.
Description
Technical field:
The present invention relates on polymer matrix composites, prepare the method for ceramic coating, particularly a kind of method of utilizing plasma spray coating process on resin matrix, to prepare alumina ceramic coating.
Background technology:
Plasma spraying is to adopt the rigidity non-transfer type plasma arc as thermal source, and powdered material is main heat spraying method.Powder feeding air-flow conveying powder spray material enters plasma arc, and is heated to rapidly melting or semi-melting state, with the pretreated substrate surface of plasma jet high-speed impact, and forms firmly tectum---sprayed coating at substrate surface.Thereby make part be obtained different hardness, wear-resisting, heat-resisting, corrosion-resistant, insulation, the various specific physical chemical properties such as heat insulation, lubricated by sprayed surface, to satisfy the different working conditions requirement of part.
Polymer matrix composites are widely used owing to having good specific tenacity and specific rigidity, but because its hardness is not high, so wear resisting property is relatively poor, usually can lose efficacy because of wearing and tearing in some Working environment.Aluminum oxide has higher hardness, aluminum oxide coating layer has good wear-resisting, resistance toheat, and in Plasma Spraying Process Using, do not need too high strength of current, thereby the surface temperature of resin matrix is avoided the damage of resin material in the time of can effectively controlling the preparation coating.The method that the fat-based materials surface hardness is counted in existing raising is that stupalith is solidificated in the resin material surface, but the coating of this method preparation is the mixture of resin and pottery, is not hundred-percent pottery, so wear resisting property can descend with respect to pure pottery.
Summary of the invention:
The present invention utilizes plasma spray coating process in polymer matrix composites surface preparation aluminum oxide protective coating, to reach the purpose that improves the polymer matrix composites use properties.
Described purpose is achieved by the following scheme:
A kind of plasma spray coating process may further comprise the steps successively in resin material surface preparation alumina ceramic coating method:
A. before the cured resin based composites, aluminium powder is sprinkling upon the outermost layer for the treatment of solidify material equably, is cured after putting into mould;
B. the polymer matrix composites after will solidifying are cut into the size that needs, and carry out sandblasting with sandblast machine on its surface, and making its surfaceness is Ra=5-10 μ m.
C. plasma spraying is carried out on the polymer matrix composites surface after sandblast, prepares uniform Al transition layer, and the thickness of control Al transition layer is 50～100 microns;
D. at the abundant cooled polymer matrix composites surface spraying aluminum oxide that has sprayed the Al transition layer.
Coating is with Al powder and Al
2O
3Powder is raw material, and powder size is 20～40 microns.
The parameter of control spray gun is during preparation Al transition layer: the strength of current 180-210A of spraying, and voltage 50-60V, main gas flow 900-1000L/h, inferior gas flow 100-150L/h, powder feeding gaseous tension 0.02MPa, spray distance are 170～190mm.
The parameter of control spray gun is during the preparation aluminum oxide coating layer: strength of current 270-300A, and voltage 50-65V, main gas flow 850-1000L/h, inferior gas flow 100-200L/h, powder feeding gaseous tension 0.02MPa, spray distance are 150-170mm.
Spraying Al transition layer and/or aluminum oxide coating layer all use the plasma spraying subsystem to carry out; The structure of described plasma spraying subsystem is:
Comprise for the rotating disk of fixation workpiece and place the fixedly gun stand of spray gun that is used for of rotating disk one side, described gun stand is fixed on the nut of screw-nut body, and by screw-nut body drive slip, leading screw and the turntable surface of described screw-nut body are arranged in parallel; Described rotating disk is connected with direct-current machine and by DC MOTOR CONTROL speed of rotation and sense of rotation.
Several through holes are set on the described rotating disk.
The plasma spraying subsystem also comprises revolution control lever and travel switch, and described revolution control lever is two and is separately fixed in the through hole of rotating disk different positions; Described revolution control lever can touch with travel switch by the rotation of rotating disk; Described travel switch connects positive and reverse rotation control circuit, and positive and reverse rotation control circuit connects the input power of direct-current machine.
Replace screw-nut body by slide block and slideway, that is, described gun stand is fixed on the slide block, and slide block can be done the translational motion that is parallel to turntable surface along guide rail.
The direction of motion of supposing slide block or nut is the X-direction of coordinate axis, and then gun stand also has the structure that can realize coordinate axis Y-direction, Z-direction motion.
Described gun stand comprises Z-direction slide block and Y-direction slide block, and spray gun is fixed on the Z-direction slide block; Described Z-direction slide block places on the Z-direction slideway and can do along the Z-direction slideway slip of vertical direction; Described Z-direction slideway is fixedly connected with the Y-direction slide block, and described Y-direction slide block places on the Y-direction slideway and can carry out horizontal direction along the Y-direction slideway and slide.
The present invention has the following advantages: 1, with Al, alumina powder is raw material, and is with low cost; 2, the method for the invention is low to the matrix surface shape need, in theory can be at the polymer matrix composites surface preparation aluminum oxide coating layer of arbitrary shape; 3, to prepare speed fast for coating, and production efficiency is high; 4, the present invention is that alumina-ceramic consists of by the coating of plasma spraying method preparation fully, and the coating of making has good surface hardness (13.31GPa) and bonding strength (5.21MPa); 4, operation of equipment is simple, and maintaining is convenient.
Description of drawings:
Fig. 1 is the structural representation of the plasma spraying subsystem used of the present invention.
Wherein, 1-rotating disk; The 2-gun stand; The 3-plasma gun; The 4-through hole; 5-turns round control lever; The 6-travel switch; The nut of 7-screw-nut body; The leading screw of 8-screw-nut body; 9-Z is to slide block; 10-Z is to slideway; 11-Y is to slideway; 12-Y is to slide block.
Embodiment:
Elaborate the preferred embodiment of the present invention below in conjunction with accompanying drawing.
The polymer matrix composites that the present invention mentions, espespecially can be anti-the resin composite materials of temperature more than 200 ℃, such as epoxy resin-base composite material, unsaturated polyester resin-based composite, phenolic resin-base composite etc.
Concrete operation step of the present invention is as follows: 1, when the cured resin based composites, the outermost layer that aluminium powder is sprinkling upon solidify material uniformly make aluminium powder just fully the covering resin matrix surface get final product, be cured after putting into mould, these aluminium powders can play the effect of being combined with the Al of plasma spraying coating, thereby improve on the whole the bonding properties of coating, after tested, added that the bonding properties of coating has improved 21% behind the aluminium powder during curing; 2, polymer matrix composites are cut into the size that needs, carry out sandblasting with sandblast machine on its surface, make its surface have certain roughness, roughness can be controlled in Ra=5-10 μ m, prepares the bonding strength of coating with the plasma spraying after guaranteeing; 3, the polymer matrix composites after the sandblasting are placed on the rotating disk of plasma spraying subsystem (back elaboration), carry out plasma spraying, prepare uniform Al transition layer, usually the Al transition layer of preparation 50 micron thickness needs rotating disk to come and go twice with the speed of 4s/r, the parameter of control is when using Sulzer U.S. 3MB of section plasma spray gun to spray: strength of current is controlled at 210A, voltage is 50V, main gas flow is 900L/h, inferior gas flow is 100L/h, the powder feeding gaseous tension is 0.02MPa, and spray distance is 170mm.The parameter of control spray gun is when using Sulzer U.S. F4MB-XL of section plasma spray gun to spray the Al transition layer for preparing 50 micron thickness: strength of current is controlled at 180A, voltage is 60V, main gas flow is 1000L/h, inferior gas flow is 150L/h, the powder feeding gaseous tension is 0.02MPa, and spray distance is 190mm.
To note timely cooling in the spraying process, avoid the long-time continuous spraying as far as possible; 4, at the abundant cooled polymer matrix composites surface spraying aluminum oxide that has sprayed the Al transition layer, the aluminum oxide coating layer for preparing 20 micron thickness, need rotating disk to come and go twice with the speed of 4s/r, the parameter of control is when using the 3MB of Sulzer U.S. section plasma spray gun to spray: the strength of current of spraying is 270A, voltage is 50V, and main gas flow is 850L/h, and inferior gas flow is 100L/h, the powder feeding gaseous tension is 0.02MPa, and spray distance is 150mm.The parameter of control spray gun is when using the F4MB-XL of Sulzer U.S. section plasma spray gun to spray the aluminum oxide coating layer for preparing 20 micron thickness: the strength of current of spraying is 300A, voltage is 65V, main gas flow is 1000L/h, inferior gas flow is 200L/h, the powder feeding gaseous tension is 0.02MPa, and spray distance is 170mm.Can prepare on the polymer matrix composites surface aluminum oxide wear-resistant coating like this.
The present invention sprays Al transition layer and/or aluminum oxide coating layer, all use the plasma spraying subsystem to carry out, its structure as shown in Figure 1, comprise rotating disk 1 and place the gun stand 2 of rotating disk one side, acting on of rotating disk 1 is fixing workpiece to be sprayed, and the effect of gun stand 2 is fixedly plasma gun 3;
Several through holes 4 are set on the rotating disk 1, and its effect has three: one, for fixation workpiece, can with clip with workpiece clamp on through hole, workpiece directly can certainly be sticked on the surface of rotating disk 1; The 2nd, for heat radiation, because spray gun can be emitted a large amount of heat in the Plasma Spraying Process Using, so the disk through hole can avoid carrying disk to cross cause thermal damage; The 3rd, for decompression, plasma gun can eject spray material and gas during spraying, and workpiece surface and rotating disk part can bear immense pressure, so be damaged for fear of rotating disk, in disc surfaces through hole are set, the stream pressure in the time of can effectively laying down spraying.
Suppose that leading screw drives the direction of the nut motion setting party of leading screw 8 (be to) and is the X-direction of coordinate axis (be X-direction leading screw hereinafter referred to as this leading screw, this nut is the X-direction nut), then gun stand also has the structure that can realize that coordinate axis Y-direction, Z-direction are moved.Particularly, gun stand comprises Z-direction slide block 9 and Y-direction slide block 12, and spray gun is fixed on the Z-direction slide block 9, and Z-direction slide block 9 is arranged on the Z-direction slideway 10, so spray gun can be done with Z-direction slide block 9 slip of vertical direction along Z-direction slideway 10; Z-direction slideway 10 is fixedly connected with Y-direction slide block 12, and Y-direction slide block 12 places on the Y-direction slideway 11 and can carry out horizontal direction along Y-direction slideway 11 and slide, so spray gun can be done with Y-direction slide block 12 motion of horizontal direction.Because Y-direction slideway 11 is vertical in horizontal plane with the X-direction leading screw, and Y-direction slideway 11 is fixed on the X-direction nut, therefore, spray gun can be realized the motion of X, Y, three directions of Z under X-direction nut, Y-direction slide block 12 and Z-direction slide block 9 drive.
When carrying out plasma spraying, the workpiece of preparing spraying is loaded into above the rotating disk, determine dial rotation speed and slewing area, adjust simultaneously the stop place that all directions slide block is determined spray gun, start-up system can obtain desirable coating.
In addition, screw-nut body noted earlier also can be replaced by slide block and slideway, that is, described gun stand is fixed on the slide block, and slide block can be done the translational motion that is parallel to turntable surface along guide rail.Can realize purpose of the present invention equally.
In addition, described screw-nut body can also be replaced by other moving sets that can realize planar movement, all within protection scope of the present invention.
After the preparation coating, specimen surface hardness rises to 13.31GPa by 0.12GPa, the polymer matrix composites surface hardness of Effective Raise, thereby the wear resisting property of raising material.
Present embodiment is the protection domain that the exemplary illustration of this patent is not limited it; those skilled in the art can also carry out the part to it and change; as long as no the spirit that exceeds this patent, all be considered as the replacement that is equal to this patent, all within the protection domain of this patent.
Claims (7)
1. a plasma spray coating process is characterized in that may further comprise the steps successively in resin material surface preparation alumina ceramic coating method:
A. before the cured resin based composites, aluminium powder is sprinkling upon the outermost layer for the treatment of solidify material equably, is cured after putting into mould;
B. the polymer matrix composites after will solidifying are cut into the size that needs, and carry out sandblasting with sandblast machine on its surface, and making its surfaceness is Ra=5-10 μ m;
C. plasma spraying is carried out on the polymer matrix composites surface after sandblast, prepares uniform Al transition layer, and the thickness of control Al transition layer is 50～100 microns;
D. at the abundant cooled polymer matrix composites surface spraying aluminum oxide that has sprayed the Al transition layer;
Wherein: spraying Al transition layer and/aluminum oxide coating layer, all use the plasma spraying subsystem to carry out; The structure of described plasma spraying subsystem is:
Comprise for the rotating disk of fixation workpiece and place rotating disk one side the gun stand that is used for fixing spray gun, turn round control lever and travel switch, described gun stand is fixed on the nut of screw-nut body, and by screw-nut body drive slip, leading screw and the turntable surface of described screw-nut body are arranged in parallel; Described rotating disk is connected with direct-current machine and by DC MOTOR CONTROL speed of rotation and sense of rotation, several through holes is set on the rotating disk; Described revolution control lever is two and is separately fixed in the through hole of rotating disk different positions; Described revolution control lever can touch with travel switch by the rotation of rotating disk; Described travel switch connects positive and reverse rotation control circuit, and positive and reverse rotation control circuit connects the input power of direct-current machine.
2. plasma spray coating process according to claim 1 is characterized in that in resin material surface preparation alumina ceramic coating method coating is with Al powder and Al
2O
3Powder is raw material, and powder size is 20～40 microns.
3. plasma spray coating process according to claim 1 is in resin material surface preparation alumina ceramic coating method, the parameter of control spray gun is when it is characterized in that preparing the Al transition layer: the strength of current 180-210A of spraying, voltage 50-60V, main gas flow 900-1000L/h, inferior gas flow 100-150L/h, powder feeding gaseous tension 0.02MPa, spray distance are 170～190mm.
4. plasma spray coating process according to claim 1 is in resin material surface preparation alumina ceramic coating method, the parameter of control spray gun is when it is characterized in that preparing aluminum oxide coating layer: strength of current 270-300A, voltage 50-65V, main gas flow 850-1000L/h, inferior gas flow 100-200L/h, powder feeding gaseous tension 0.02MPa, spray distance are 150-170mm.
5. plasma spray coating process according to claim 1 is in resin material surface preparation alumina ceramic coating method, it is characterized in that replacing screw-nut body by slide block and slideway, that is, described gun stand is fixed on the slide block, and slide block can be done the translational motion that is parallel to turntable surface along guide rail.
6. plasma spray coating process according to claim 1 is in resin material surface preparation alumina ceramic coating method, it is characterized in that supposing that the direction of motion of slide block or nut is the X-direction of coordinate axis, then gun stand also has the structure that can realize coordinate axis Y-direction, Z-direction motion.
7. plasma spray coating process according to claim 6 is characterized in that in resin material surface preparation alumina ceramic coating method described gun stand comprises Z-direction slide block and Y-direction slide block, and spray gun is fixed on the Z-direction slide block; Described Z-direction slide block places on the Z-direction slideway and can do along the Z-direction slideway slip of vertical direction; Described Z-direction slideway is fixedly connected with the Y-direction slide block, and described Y-direction slide block places on the Y-direction slideway and can carry out horizontal direction along the Y-direction slideway and slide.
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| CN2011101841509A CN102251208B (en) | 2011-07-04 | 2011-07-04 | Method for preparing aluminum oxide ceramic coating on surface of resin material by plasma spraying process |
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| CN2011101841509A CN102251208B (en) | 2011-07-04 | 2011-07-04 | Method for preparing aluminum oxide ceramic coating on surface of resin material by plasma spraying process |
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| CN102251208B true CN102251208B (en) | 2013-04-10 |
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| CN102409341B (en) * | 2011-12-07 | 2013-07-10 | 哈尔滨工业大学 | Method for preparing aluminium oxide ceramic coating on surface of resin material |
| JP6120361B2 (en) * | 2013-03-28 | 2017-04-26 | トーカロ株式会社 | Method for manufacturing rolling bearing for preventing electrical decoration |
| CN107447182B (en) * | 2017-09-20 | 2019-05-03 | 绍兴意诺贸易有限公司 | A kind of plasma spraying turntable |
| CN110053331A (en) * | 2019-05-09 | 2019-07-26 | 河源广工大协同创新研究院 | A kind of preparation method of ceramic substrate high-frequency copper-clad plate |
| CN110158012B (en) * | 2019-05-21 | 2021-08-24 | 中国科学院宁波材料技术与工程研究所 | Method for metalizing rubber surface |
| CN112976601B (en) * | 2021-02-08 | 2023-08-25 | 东莞市维斯德新材料技术有限公司 | Carbon fiber preparation process |
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| CN2444310Y (en) * | 2000-09-26 | 2001-08-22 | 石家庄宝石电子集团有限责任公司 | Coating powder machine |
| CN2544875Y (en) * | 2002-04-12 | 2003-04-16 | 王纪山 | Three-D position-controlled full-automatic surface welding and spray coating device |
| US7179526B2 (en) * | 2002-08-02 | 2007-02-20 | 3M Innovative Properties Company | Plasma spraying |
| CN101016614A (en) * | 2007-02-08 | 2007-08-15 | 陈锦松 | Process of spraying ceramic on epoxy resin base carbon fiber composite material article surface |
| CN101823034A (en) * | 2010-01-22 | 2010-09-08 | 湖北光瑞置业有限公司 | Molybdenum spraying machine |
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