CN108505040A - A method of columnar arrays surface is prepared based on micro-arc spark deposition technique - Google Patents
A method of columnar arrays surface is prepared based on micro-arc spark deposition technique Download PDFInfo
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- CN108505040A CN108505040A CN201810256040.0A CN201810256040A CN108505040A CN 108505040 A CN108505040 A CN 108505040A CN 201810256040 A CN201810256040 A CN 201810256040A CN 108505040 A CN108505040 A CN 108505040A
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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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
Abstract
The invention discloses a kind of methods preparing columnar arrays surface based on micro-arc spark deposition technique, with micro-arc spark precipitation equipment, reguline metal or part are fixed on as matrix on the workbench, the matrix is connected with the cathode of micro-arc spark precipitation equipment, the rodlike metal is fixed on as electrode on work rifle, the work rifle is connected with the anode of the micro-arc spark precipitation equipment, under protective atmosphere, by electrode close to matrix surface, the electrode is made rule in the matrix surface or is moved irregularly, an array-like surface being made of a large amount of independent microcylinders is finally formed on the matrix.The present invention is simple and practical, at low cost, finished surface type is wide, plane and curved surface can be processed, the surface area of flat surface is increased simultaneously, obtained columnar microstructure is firmly combined with matrix, can be used for enhanced heat exchange, roll feather plucking, thermal spraying pre-treatment can also be combined with other surfaces technology and prepare composite coating.
Description
Technical field
The present invention relates to a kind of preparation methods of columnar arrays body structure surface, more particularly to a kind of to be deposited based on micro-arc spark
Technology prepares the preparation method with columnar arrays body structure surface.
Background technology
By the way that the hardness of material surface, wearability, corrosion resistance, heat resistance, anti-tired can be improved to material surface processing
The mechanical properties such as labor intensity, to ensure that material reliably takes under high temperature, high pressure, heavy duty and strong corrosive medium working condition
Labour.The flat surface of material is processed into rough surface, is constantly subjected to people's as a kind of surface treatment mode
Concern and research.Columnar arrays body structure surface has numerous applications in engineering, for example, roll feather plucking, metallising pre-treatment,
The preparation of super hydrophobic surface and enhanced heat transfer etc..In order to preferably apply columnar arrays body structure surface, its system is furtherd investigate
Preparation Method is just particularly important.
Currently, the method for preparing columnar arrays body structure surface has the methods of mechanical processing and corrosion processing.These methods or
Its more or rare disadvantage, as complicated for operation, equipment cost is high, the requirement to operating personnel is also higher.
Micro-arc spark deposition is called electric spark deposition, EDM alloying, pulse electric arc welding, pulsed electrode built-up welding etc.,
It is a kind of novel surface treatment technology.It is the principle using pulse arc discharge, with conductive material (hard alloy, graphite etc.)
As working electrode (anode), produced between the metal works for being allowed to and being reinforced in air, special gas and liquid (cathode)
Raw high-frequency impulse (0.1~4KHZ) is discharged, 10-6~10-5Electrode is contacted with workpiece in s position generate reach 8000~
25000 DEG C of high temperature, using the energy of the spark discharge, by the electrode material infiltration of fusing to workpiece surface, being formed has smelting
The strengthening layer of golden characteristic improves the hardness of part, wearability, anti-corrosion to make the physical and chemical properties of workpiece be improved
The surface propertys such as property and thermohardening.It is excellent since its is easy to operate, heat input is small, heat affected area is small and technique is applied widely etc.
Point is widely used in preparing various modifications or strengthening surface in the fields such as the energy, Aeronautics and Astronautics and military affairs in recent years.
The method that tradition prepares columnar arrays body structure surface is mostly the mode removed based on material, and complicated for operation, waste
Seriously, finished surface is confined to plane more, and the present invention utilizes micro-arc spark deposition technique, by increasing material system in matrix surface
Standby columnar arrays body structure surface.
Invention content
In order to extend the application range of micro-arc spark deposition technique, differential of the arc fire is utilized purpose of the present invention is to provide a kind of
The method that flower deposition technique prepares columnar arrays body structure surface.
A method of columnar arrays surface being prepared based on micro-arc spark deposition technique, which is characterized in that the method is pressed
Following steps carry out：
(1) using reguline metal or part as matrix, using rodlike metal as electrode, with sand paper polishing matrix and electrode table
Removing oxide layer is removed in face, and then cleaning degreases；
(2) micro-arc spark precipitation equipment is used, the matrix after the pre-treatment obtained by step (1) is fixed on to the workbench
On, the matrix is connected with the cathode of micro-arc spark precipitation equipment, the rodlike metal is fixed on work as electrode
On rifle, the work rifle is connected with the anode of the micro-arc spark precipitation equipment, under protective atmosphere, by electrode close to base
Body surface face, the electrode are made rule in the matrix surface or are moved irregularly, and finally form one on the matrix
A array-like surface being made of a large amount of independent microcylinders；The electrode matches with the work rifle.
Further, in step (1), the material of the electrode and matrix respectively stands alone as iron-based material, nickel-base material, cobalt
Sill, titanium base material, copper-based material, alumina-base material or mg-based material.
Further, in step (1), described wherein iron-based material preferred 06Cr19Ni10,10Cr17 or 2Cr13, nickel
The preferred Inconel625 of sill, the preferred Stellite6 of cobalt-based material, the preferred TC4 of titanium base material, copper-based material is preferably H62
Or T2, alumina-base material are preferably 7075, mg-based material is preferably AZ31.
Further, in step (1), the surface of the matrix is plane or cambered curved surface.
Further, in step (2), the protective atmosphere can be argon gas, nitrogen, helium or hydrogen in one kind or
The gaseous mixture that one or both of any one or two kinds in argon gas, helium, nitrogen, hydrogen and air or oxygen mix
Body.
Further, in step (2), when deposition test carries out in protective gas, the matrix and electrode are placed in
In atmosphere protection device, oxygen analyser monitors the concentration of oxygen in atmosphere protection device in real time, until oxygen concentration is reduced to
When 0.03%~12.0%, then carry out micro-arc spark deposition test.
Further, the iron-based material, nickel-base material and cobalt-based material are placed in atmosphere protection gloves in step (2)
When carrying out sedimentation experiment in bag, oxygen concentration carries out when being reduced to 0.07~12.0%.
Further, the titanium base material, copper-based material, alumina-base material and mg-based material are placed in gas in step (2)
When carrying out sedimentation experiment in atmosphere gloves for protection bag, oxygen concentration carries out when being reduced to 0.03~3.0%.
Further, in step (2), the distance between the electrode and matrix are 1~180 μm, and capacitance is >=10 μ F,
Pulse discharge time is >=1 μ s.
Further, in step (2), preferably 5~90 μm of the distance between the electrode and matrix, capacitance preferably 200
~800 μ F, pulse discharge time preferably 20~50 μ s.
Further, in step (2), the electrode is electrode close to matrix surface in the described matrix surface movement
It does rule or irregular continuous movement or electrode first fixing on one point close to matrix surface, be formed until a cylinder deposits
Afterwards, it moves again to subsequent point and carries out micro-arc spark deposition.
Further, in step (2), the electrode is 0.1 in the speed for the round-trip that matrix surface continuously moves
~1.5cm/s.
100~900 μm of the diameter of gained columnar arrays of the invention, is highly 50~2000 μm, 0.1~2mm of spacing.
More specifically, the method for the present invention that columnar arrays surface is prepared based on micro-arc spark deposition technique is whole
Covering experimental provision includes：Protect gas cylinder, work rifle, micro-arc spark precipitation equipment, atmosphere protection glove bag/case, bench vice and
Oxygen analyser；The bench vice makes for fixing matrix, the bench vice that the atmosphere protection glove bag/case is used to wrap after fixing matrix
Bench vice is in airtight and closes, and the blow vent of the protection gas cylinder is connect with the atmosphere protection glove bag/case, the platform
The oxygen measuring probe of pincers oxygen analyser stretches into the atmosphere protection glove bag/case, and the cathode of the micro-arc spark precipitation equipment can
It is electrically connected with the matrix, the anode of the micro-arc spark precipitation equipment is electrically connected with the work rifle；The gas
Atmosphere gloves for protection bag/case is equipped with and the work close-fitting work rifle interface of rifle；When the micro-arc spark precipitation equipment works,
Matrix is connect with the cathode interface of the micro-arc spark precipitation equipment and is fixed on bench vice by bench vice knob, and by institute
Airtight close of bench vice stated is placed in atmosphere protection glove bag/case；The work rifle end is equipped with work rifle collet, and electrode is consolidated
Due on the work rifle collet, the work rifle is connect with the anode interface of the micro-arc spark precipitation equipment；Institute
The protection gas cylinder stated is connect with the atmosphere protection glove bag/case, and the oxygen measuring probe of the oxygen analyser monitors guarantor in real time
Oxygen content in handguard bagging/case；The described work rifle by the work rifle interface and the atmosphere protection glove bag/
Case airtight connection when experiment starts, opens protective gas Steel cylinder gas valve, protection gas is passed through into atmosphere protection glove bag/case, is waited for
When the concentration of oxygen is reduced to 0.03%~6.0%, open adjust micro-arc spark precipitation equipment and regulation power adjusting knob and
Mode tuning knob, opens work rifle switch and one end that the rifle that works is fixed with to electrode carries out micro-arc spark deposition close to matrix
Experiment.
Compared with prior art, the beneficial effects of the present invention are：
The present invention carries out the preparation on columnar arrays surface, simple to operate, equipment cost by the way of increasing material manufacturing
Low and easy to carry, finished surface type is wide, and plane and curved surface can be processed, and obtained microcylinder and matrix metallurgical binding are
The research of enhanced heat exchange, roll feather plucking, composite coating, super hydrophobic surface etc. provides reference.
Description of the drawings
Fig. 1 micro-arc sparks deposit discharge principle figure；
Fig. 2 experimental provision schematic diagrams, 1 is micro-arc spark precipitation equipment, and 2 be anode interface, and 3 be work rifle, and 4 be matrix, 5
For bench vice knob, 6 be atmosphere protection glove bag/case, and 7 be oxygen measuring probe, and 8 be bench vice, and 9 be electrode, and 10 be work rifle collet, 11
It is power regulating knob for cathode interface, 12,13 be mode tuning knob, and 14 be air valve, and 15 be protection gas cylinder, and 16 be oxygen determination
Instrument；
Fig. 3 is experiment flow figure；
Fig. 4 is columnar arrays body structure surface representative microstructure shape appearance figure.
Specific implementation mode
It further illustrates the present invention below in conjunction with the accompanying drawings.
The RC charge-discharge principles of the method for the present invention that columnar arrays surface is prepared based on micro-arc spark deposition technique
Figure is as shown in Fig. 1.
3 institute of flow chart attached drawing of the method for the present invention that columnar arrays surface is prepared based on micro-arc spark deposition technique
Show.
The a whole set of experimental provision of the method for the present invention that columnar arrays surface is prepared based on micro-arc spark deposition technique
Including：Protect gas cylinder 15, work rifle 3, micro-arc spark precipitation equipment 1, atmosphere protection glove bag 6, bench vice 8 and oxygen analyser
16；The bench vice 8 makes for fixing matrix, the bench vice that the atmosphere protection glove bag is used to wrap after fixing matrix at bench vice
It is closed in airtight, the blow vent of the protection gas cylinder 15 is connect with the atmosphere protection glove bag 6, the bench vice oxygen determination
The oxygen measuring probe of instrument 16 stretches into the atmosphere protection glove bag, the cathode of the micro-arc spark precipitation equipment 1 with it is described
Matrix connects, and the anode of the micro-arc spark precipitation equipment is electrically connected with the work rifle 3；The atmosphere protection gloves
Bag is equipped with and the work close-fitting work rifle interface of rifle；When the described micro-arc spark precipitation equipment work, by matrix 4 with it is described
The cathode interface 11 of micro-arc spark precipitation equipment 1 connect and be fixed on bench vice 8 by bench vice knob 5, and by the platform
8 airtight close are clamped to be placed in atmosphere protection glove bag 6；3 end of work rifle is equipped with work rifle collet 10, and electrode 9 is fixed
In on the work rifle collet 10, the work rifle 3 is connect with the anode interface 2 of the micro-arc spark precipitation equipment 1；
The protection gas cylinder 15 is connect with the atmosphere protection glove bag 6, and the oxygen measuring probe 7 of the oxygen analyser 16 is supervised in real time
Survey 6 oxygen contents in gloves for protection bag；The work rifle passes through the work rifle interface and the atmosphere protection gloves
6 airtight connections of bag when experiment starts, open protective gas Steel cylinder gas valve 14, protection gas are passed through into atmosphere protection glove bag 6,
When the concentration of oxygen is reduced to 0.05%~0.5%, opens and adjust micro-arc spark precipitation equipment 1 and regulation power adjusting knob
12 and mode tuning knob 13, one end that the rifle 3 that works is fixed with to electrode 9 carries out micro-arc spark deposition test close to matrix 4.
Embodiment 1
1) 06Cr19Ni10 metal derbies are cut into the blockage sample with plane of 12 × 8 × 4mm with wire cutting, as
Matrix, puts it into contain and be cleaned in spirituous supersonic wave cleaning machine, then use successively 240#, 400#, 800# and
The sand paper of 1000# is polished its surface, is then placed again into contain and be cleaned in spirituous supersonic wave cleaning machine, spare；It will be straight
The 06Cr19Ni10 metal bars of diameter 0.2mm are cut into the segment of 4cm long, and as electrode, oxide layer is removed in the polishing of sand for surface paper, clearly
It washes spare；
2) metal derby is clipped on bench vice, is put into atmosphere protection glove bag, electrode is mounted on work rifle collet, head
Expose 1.5cm, argon gas is then passed through into bag, gas flow 3L/min monitors atmosphere protection gloves by oxygen analyser in real time
The concentration of oxygen, until oxygen concentration is reduced to 12.0%, then carries out micro-arc spark deposition in bag；
3) use 3H-ES-6 type micro-arc spark precipitation equipments carry out deposition test, power 1000W, 10 μ F of output capacitance,
1 μ s of pulse discharge time, experiment process is as shown in Fig. 2, and electrode is in the continuous moving of matrix surface rule, speed 0.5cm/
S, the distance between electrode and matrix be 1 μm, total sedimentation time be 1.0min, obtain column diameter average value be about 100 μm, column
Body height average is about 50 μm, the columnar arrays surface of about 120 μm of cylinder spacing average value.
Embodiment 2
1) 10Cr17 metal derbies are cut into the blockage sample with plane of 12 × 8 × 4mm with wire cutting, as base
Body puts it into contain and be cleaned in spirituous supersonic wave cleaning machine, then uses 240#, 400#, 800# and 1000# successively
Sand paper polish its surface, be then placed again into contain and be cleaned in spirituous supersonic wave cleaning machine, it is spare；By diameter
The 06Cr19Ni10 metal bars of 3.0mm are cut into the segment of 4cm, and as electrode, oxide layer is removed in the polishing of sand for surface paper, and cleaning is standby
With；
2) metal derby is clipped on bench vice, is put into atmosphere protection glove bag, electrode is mounted on work rifle collet, head
Expose 1.5cm, nitrogen is then passed through into bag, gas flow 1L/min monitors atmosphere protection gloves by oxygen analyser in real time
The concentration of oxygen, until oxygen concentration is reduced to 0.07%, then carries out micro-arc spark deposition in bag；
3) 3H-ES-6 type micro-arc spark precipitation equipments are used to carry out deposition test, power 5000W, 800 μ of output capacitance
F, 50 μ s of pulse discharge time, experiment process is as shown in Fig. 2, and in the continuous moving of matrix surface rule, speed is electrode
1.2cm/s, the distance between electrode and matrix are 60 μm, and total sedimentation time is 30min, and obtaining column diameter average value is about
900 μm, the columnar arrays surface that height of column average value is about 2000 μm, cylinder spacing average value is about 1920 μm, shape appearance figure
As shown in the c of Fig. 4.
Embodiment 3
1) 2Cr13 metal derbies are cut into the blockage sample with plane of 12 × 8 × 4mm with wire cutting, as matrix,
It puts it into contain and be cleaned in spirituous supersonic wave cleaning machine, then use 240#, 400#, 800# and 1000# successively
Sand paper is polished its surface, is then placed again into contain and be cleaned in spirituous supersonic wave cleaning machine, spare；By diameter 1.0mm
10Cr17 metal bars be cut into the segment of 4cm, as electrode, oxide layer is removed in the polishing of sand for surface paper, and cleaning is spare；
2) metal derby is clipped on bench vice, is put into atmosphere protection glove bag, electrode is mounted on work rifle collet, head
Expose 1.5cm, be then passed through the mixed gas of argon gas and oxygen into bag, gas flow 2L/min is real-time by oxygen analyser
The concentration for monitoring oxygen in atmosphere protection glove bag, until oxygen concentration is reduced to 5.0%, then carries out micro-arc spark deposition；
3) 3H-ES-6 type micro-arc spark precipitation equipments are used to carry out deposition test, power 1300W, 200 μ of output capacitance
F, 20 μ s of pulse discharge time, experiment process is as shown in Fig. 2, and in the continuous moving of matrix surface rule, speed is electrode
0.5cm/s, the distance between electrode and matrix are 2 μm, and total sedimentation time is 20min, and it is about 230 to obtain column diameter average value
μm, height of column average value be about 57 μm, the columnar arrays surface of about 910 μm of cylinder spacing average value, a of shape appearance figure such as Fig. 4
It is shown.
Embodiment 4
1) the Inconel625 metals with cambered surface are cut into the small sample with curved surface with wire cutting, it, will as matrix
It is put into contain and be cleaned in spirituous supersonic wave cleaning machine, then uses the sand of 240#, 400#, 800# and 1000# successively
Paper is polished its surface, is then placed again into contain and be cleaned in spirituous supersonic wave cleaning machine, spare；By diameter 1.0mm's
2Cr13 metal bars are cut into the segment of 4cm, and as electrode, oxide layer is removed in the polishing of sand for surface paper, and cleaning is spare；
2) metal derby is clipped on bench vice, is put into atmosphere protection glove bag, electrode is mounted on work rifle collet, head
Expose 1.5cm, be then passed through the mixed gas of nitrogen and oxygen into bag, gas flow 3L/min is real-time by oxygen analyser
The concentration for monitoring oxygen in atmosphere protection glove bag, until oxygen concentration is reduced to 4.5%, then carries out micro-arc spark deposition；
3) 3H-ES-6 type micro-arc spark precipitation equipments are used to carry out deposition test, power 1500W, 420 μ of output capacitance
F, 30 μ s of pulse discharge time, experiment process is as shown in Fig. 2, and electrode is first fixed on one point in matrix surface, waits until a column
After body is formed, then the subsequent point that is moved to of rule carries out micro-arc spark deposition, and the distance between electrode and matrix are 13 μm, total heavy
The product time is 10min, obtains that column diameter average value is about 350 μm, height of column average value is about anomaly between 410 μm, cylinder
The columnar arrays surface that about 1062 μm of mean value.
Embodiment 5
1) Stellite6 metal derbies are cut into the blockage sample with plane of 12 × 8 × 4mm with wire cutting, as
Matrix, puts it into contain and be cleaned in spirituous supersonic wave cleaning machine, then use successively 240#, 400#, 800# and
The sand paper of 1000# is polished its surface, is then placed again into contain and be cleaned in spirituous supersonic wave cleaning machine, spare；It will be straight
The Inconel625 metal bars of diameter 2.0mm are cut into the segment of 4cm, and as electrode, oxide layer is removed in the polishing of sand for surface paper, cleans
It is spare；
2) metal derby is clipped on bench vice, electrode is mounted on work rifle collet, and 1.5cm is exposed on head, and micro-arc spark is heavy
Product carries out in air；
3) 3H-ES-6 type micro-arc spark precipitation equipments are used to carry out deposition test, power 1600W, 420 μ of output capacitance
F, 30 μ s of pulse discharge time, experiment process is as shown in Fig. 2, and electrode is first fixed on one point in matrix surface, until one it is micro-
Cylinder deposits to be formed after, then the subsequent point that is moved to of rule carries out micro-arc spark deposition, and so on moves, electrode and matrix it
Between distance be 13 μm, total sedimentation time be 15min, obtain column diameter average value be about 390 μm, height of column average value about
For 630 μm, the columnar arrays surface of about 1165 μm of cylinder spacing average value, shape appearance figure is as shown in the b of Fig. 4.
Embodiment 6
1) TC4 metal derbies are cut into the blockage sample with plane of 12 × 8 × 4mm with wire cutting, it, will as matrix
It is put into contain and be cleaned in spirituous supersonic wave cleaning machine, then uses the sand of 240#, 400#, 800# and 1000# successively
Paper is polished its surface, is then placed again into contain and be cleaned in spirituous supersonic wave cleaning machine, spare；By diameter 3.0mm's
TC4 metal bars are cut into the segment of 4cm, and as electrode, oxide layer is removed in the polishing of sand for surface paper, and cleaning is spare；
2) metal derby is clipped on bench vice, is put into atmosphere protection glove bag, electrode is mounted on work rifle collet, head
Expose 1.5cm, be then passed through the mixed gas of argon gas and helium into bag, gas flow 3L/min is real-time by oxygen analyser
The concentration for monitoring oxygen in atmosphere protection glove bag, until oxygen concentration is reduced to 0.03%, then carries out micro-arc spark deposition；
3) 3H-ES-6 type micro-arc spark precipitation equipments are used to carry out deposition test, power 2000W, 420 μ of output capacitance
F, 30 μ s of pulse discharge time, experiment process is as shown in Fig. 2, and electrode moves back and forth back and forth in matrix surface, and speed is
0.5cm/s, the distance between electrode and matrix are 18 μm, and total sedimentation time is 20min, and obtaining column diameter average value is about
421 μm, height of column average value be about 320 μm, the columnar arrays surface of about 780 μm of cylinder spacing average value.
Embodiment 7
1) 06Cr19Ni10 metal derbies are cut into the small column sample with curved surface of Φ 8mm (high 12mm) with wire cutting,
As matrix, puts it into contain and be cleaned in spirituous supersonic wave cleaning machine, then use 240#, 400#, 800# successively
It polishes its surface with the sand paper of 1000#, is then placed again into contain and be cleaned in spirituous supersonic wave cleaning machine, it is spare；It will
The Inconel625 metal bars of diameter 3.0mm are cut into the segment of 4cm, and as electrode, oxide layer is removed in the polishing of sand for surface paper, clearly
It washes spare；
2) it by small column specimen holder on bench vice, being put into atmosphere protection glove bag, electrode is mounted on work rifle collet,
1.5cm is exposed on head, and nitrogen, gas flow 1.5L/min are then passed through into bag；
3) 3H-ES-6 type micro-arc spark precipitation equipments are used to carry out deposition test, power 3000W, 480 μ of output capacitance
F, 35 μ s of pulse discharge time, experiment process is as shown in Fig. 2, and electrode moves back and forth back and forth on small column sample wall surface, speed
Degree is 1.0cm/s, and the distance between electrode and matrix are 35 μm, and total sedimentation time is 15min, obtains column diameter average value about
It it is about 1320 μm for 410 μm, height of column average value, the columnar arrays curved surface of about 830 μm of cylinder spacing average value.
As seen from Figure 4, the columnar arrays surface deposited when electrode diameter is 1.0mm as we can see from the figure,
Compared with electrode diameter 2.0mm and 3.0mm, the integrity degree and regularity of cylinder are all preferable.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of method preparing columnar arrays surface based on micro-arc spark deposition technique, which is characterized in that the method is by such as
Lower step carries out：
(1) it using reguline metal or part as matrix, using rodlike metal as electrode, is polished matrix and electrode surface with sand paper,
Removing oxide layer is removed, then cleaning degreases；
(2) micro-arc spark precipitation equipment is used, the matrix after the pre-treatment obtained by step (1) is fixed on the workbench,
The matrix is connected with the cathode of micro-arc spark precipitation equipment, the rodlike metal is fixed on work rifle as electrode
On, the work rifle is connected with the anode of the micro-arc spark precipitation equipment, under protective atmosphere, by electrode close to matrix
Surface, the electrode are made rule in the matrix surface or are moved irregularly, and one is finally formed on the matrix
The array-like surface being made of a large amount of independent microcylinders；The electrode matches with the work rifle.
2. the method according to claim 1 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (1), the material of the electrode and matrix respectively stands alone as iron-based material, nickel-base material, cobalt-based material, titanium-based
Material, copper-based material, alumina-base material or mg-based material.
3. the method according to claim 2 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (1), the iron-based material is 06Cr19Ni10,10Cr17 or 2Cr13, nickel-base material Inconel625, cobalt
Sill is Stellite6, titanium base material TC4, and copper-based material is H62 or T2, alumina-base material 7075, and mg-based material is
AZ31。
4. the method according to claim 1 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (1), the surface of the matrix is plane or cambered curved surface.
5. the method according to claim 1 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (2), the protective atmosphere can be one kind or argon gas, nitrogen, helium in argon gas, nitrogen, helium or hydrogen
The mixed gas that one or both of any one or two kinds in gas, hydrogen and air or oxygen mix.
6. the method for preparing columnar arrays surface based on micro-arc spark deposition technique according to claim 1 or 5, feature
It is：In step (2), when deposition test carries out in protective gas, the matrix and electrode are placed in atmosphere protection device
In, oxygen analyser monitors the concentration of oxygen in atmosphere protection device in real time, until when oxygen concentration is reduced to 0.03%~12.0%, then into
Row micro-arc spark deposition test.
7. the method according to claim 1 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (2), the distance between the electrode and matrix are 1~180 μm, and capacitance is >=10 μ F, and pulse discharge time is
≥1μs。
8. the method according to claim 7 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (2), the distance between the electrode and matrix are 5~90 μm, and capacitance is 200~800 μ F, when pulsed discharge
Between be 20~50 μ s.
9. the method according to claim 1 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (2), the electrode is made rule in the matrix surface or is moved irregularly as electrode close to matrix surface
Continuous movement or electrode first fixed on one point close to matrix surface, after a cylinder is deposited and to be formed, then rule shifting
It moves subsequent point and carries out micro-arc spark deposition.
10. the method according to claim 9 for preparing columnar arrays surface based on micro-arc spark deposition technique, feature exist
In：In step (2), the electrode is 0.1~1.5cm/s in the speed for the round-trip of matrix surface continuously moved.
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| CN109321785A (en) * | 2018-12-12 | 2019-02-12 | 常州大学 | A method of cobalt-based coating is prepared on cobalt-base alloys surface |
| CN111349933A (en) * | 2018-12-20 | 2020-06-30 | 兰州荣翔轨道交通科技有限公司 | High-energy micro-arc spark numerical control deposition control method for planar complex curve coating of aircraft engine and gas turbine |
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| 王维夫 等: ""微弧火花沉积制备不锈钢柱状微结构表面"", 《表面技术》 * |
| 谢剑舟: ""基于高能微弧火花技术的钛合金本体修复涂层制备研究"", 《万方数据》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109321785A (en) * | 2018-12-12 | 2019-02-12 | 常州大学 | A method of cobalt-based coating is prepared on cobalt-base alloys surface |
| CN111349933A (en) * | 2018-12-20 | 2020-06-30 | 兰州荣翔轨道交通科技有限公司 | High-energy micro-arc spark numerical control deposition control method for planar complex curve coating of aircraft engine and gas turbine |
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