CN106082206A - A kind of method and apparatus improving Nano diamond combined coefficient - Google Patents
A kind of method and apparatus improving Nano diamond combined coefficient Download PDFInfo
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- CN106082206A CN106082206A CN201610423971.6A CN201610423971A CN106082206A CN 106082206 A CN106082206 A CN 106082206A CN 201610423971 A CN201610423971 A CN 201610423971A CN 106082206 A CN106082206 A CN 106082206A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
Abstract
The present invention relates to a kind of method and apparatus improving Nano diamond combined coefficient, including laser generating system, workpiece system and aid system.The laser that high power pulsed laser device sends expands spot diameter through beam expanding lens, and produces two laser beams, the graphite water column that the first laser beam is circulated by light inlet irradiation through condenser lens after dichroic mirror and light splitting；Second laser beam then enters irradiation graphite water column from another one light inlet, and the graphite granule in solution quickly forms High Temperature High Pressure plasma after absorbing laser energy, generates nano-diamond in extremely short nonequilibrium process.Instant invention overcomes laser action area during synthesizing nano diamond little, the problems such as combined coefficient is low, it is achieved that continuous synthesis at normal temperatures and pressures, and obtain favorable dispersibility, the Nano diamond granule of even size distribution.
Description
Technical field
The invention belongs to synthetic Nano diamond field, refer in particular to improve under normal temperature and pressure Nano diamond combined coefficient
Method and apparatus.
Background technology
The preparation science of nano material is the key areas in nanosecond science and technology, in recent years achieved with tremendous development.Receive numerous
In rice material preparation method, laser is paid close attention to by the most widely as the most characteristic advanced technology of one.Nanometer gold
Hard rock has the machinery of excellence, calorifics, electricity, optics and chemistry aspect performance, and the combination of multinomial excellent properties makes it permitted
There is irreplaceable effect many leading-edge fields, have broad application prospects.
Chen Xiao tiger and Wang Jinbin etc. use ps pulsed laser and ns pulsed laser impact solid graphite target to obtain nanometer per capita in recent years
Diamond, Wang Jinbin uses nanosecond laser impact solid graphite target under water by collecting the method synthesis nanometer gold of sputtering liquid
Hard rock, two kinds of method combined coefficienies are low, are simply possible to use in theoretical research.Sun Jing, Du Xiwen et al. use millisecond laser irradiation graphite
The method of suspension synthesizes the Nano diamond of about 5nm, but in the method building-up process, laser focusing is below liquid level 1
~ 3mm, the service area area of laser is little, and activity ratio is low, and the diamond nano crystal grain productivity obtained is low.
The method that external related researcher it is also proposed laser action synthesizing nano diamond.FedOSeev and
Laser method of direct irradiation white carbon black diamond synthesis in gas medium that Derjaguin proposes.They think, the material of bulk
Material is difficult to obtain sufficiently high cooldown rate, and minimum granular materials is owing to there being the biggest specific surface area, thus is easy to obtain
Obtain high cooldown rate.Owing to laser can obtain high temperature in very short time, if carrying out irradiation nanometer amount with laser
The carbon black pellet of level, so that it may to obtain the highest cooldown rate, thus the generation of induced transformation.Fedoseev and Derjaguin
Using the continuous iraser of 10.6 μm as irradiation bomb, hydrocarbon black powder passes through vibrator with laser in focal point effect.White carbon black
Powder is heated rapidly in laser spot region and cools down the most rapidly, and the gas medium residing for reaction has air, titanium dioxide respectively
Carbon and nitrogen.Collect reacted powder and circulate for several times, last product plasma gas oxidation is removed unconverted
White carbon black, the product after purification all observed cubic diamond phase in TEM and XRD analysis, but it was additionally observed that non-diamond produces
Thing.Induced with laser liquid-solid interfacial reaction method is applied to diamond synthesizing by Ogale et al., i.e. utilizes ruby laser irradiation to soak
Graphite target in benzene has also synthesized diamond.
Although utilizing Laser synthesizing diamond to reduce conversion condition, but the most special Preparation equipment, implement behaviour
Make the most complicated, and its effect is not it is apparent that transformation efficiency is the lowest, is unfavorable for putting into production.And, laser
When Nano diamond is prepared in effect, laser is directly to act on graphite target, owing to laser energy is big, graphite target can be made to fly
Spattering, platform is prepared in pollution, and laser head even causes certain damage, impact preparation precision and the service life of laser head.
Summary of the invention
It is an object of the invention to the deficiency for above technology, it is provided that a kind of method improving Nano diamond combined coefficient
With device, the method combined coefficient is high, and technique is simple, and equipment cost is low, can go out high-quality by continuous synthesis, receiving of favorable dispersibility
Rice diamond particles.
For achieving the above object, the technical scheme that the present invention takes is: a kind of raising Nano diamond combined coefficient
Method, comprise the steps: A: with graphite microcrystal granule and deionized water preparation graphite mixed solution, and graphite mixed molten
Liquid vibration dispersion makes graphite suspension；B: graphite suspension is placed in closed reaction vessel, sets outside closed reaction vessel
Being equipped with circulation electric pump, circulation electric pump oral siphon is connected with bottom closed reaction vessel, circulate electric pump outlet pipe be linked into airtight instead
Answer in container so that graphite suspension realizes circulating under the effect of circulation electric pump；Use agitating device to keep stone simultaneously
Ink suspension moment in closed reaction vessel is in constant temperature at the uniform velocity rotation status；C: use the first laser beam and the second laser beam
The graphite suspension water column circulated in electric pump outlet pipe in reaction vessel is carried out laser irradiation simultaneously；Then after to laser irradiation
Graphite suspension be dried, acid boil purification and washing process, finally give high-quality Nano diamond granule.
In such scheme, in step A, graphite microcrystal granule is crystalline flake graphite microcrystal grain, phosphorus content 99.99%, and granularity is
1~10μm；The concentration of graphite microcrystal granule and deionized water mixes molten than the proportions graphite for 0.02g/ml ~ 0.03g/ml
Liquid, and use ethanol as graphite dispersing solution, ultrasonic activation instrument vibrates 20 ~ 40min.
In such scheme, in step B, agitating device is made up of magnetic force vibration instrument and rotor, and closed reaction vessel entirety is put
Putting on magnetic force vibration instrument, rotor is placed in the graphite suspension of closed reaction vessel.
In such scheme, described magnetic force vibration instrument is that heated at constant temperature stirs instrument, by can in the constant temperature whipping process of rotor
Whether change with electronic induction temperature；Described rotor is refined into by polyvinyl fluoride and magnet steel.
In such scheme, graphite suspension rotary speed in closed reaction vessel is 6 ~ 10r/s, and rotating speed is steady；Stone
Ink suspension circulation flow rate under circulation electric pump effect is 0.3 ~ 0.6ml/s.
In such scheme, in step C, the first laser beam and the second laser beam are to be sent by same impulse laser unit,
The laser that impulse laser unit sends is split after being expanded by beam expanding lens in advance again.
In such scheme, the first laser beam and the second laser beam higher than the graphite suspension liquid level 2 in closed reaction vessel ~
5mm。
Present invention also offers a kind of device improving Nano diamond combined coefficient, it is characterised in that include that pulse swashs
Electro-optical device, spectroscope, the first total reflective mirror, the second total reflective mirror, the 3rd total reflective mirror and reative cell, the sidewall both sides of described reative cell are divided
Not having the first light inlet and the second light inlet, the laser that described impulse laser unit the sends mirror that is split is divided into the first laser beam
With the second laser beam, the first laser beam reflexes to the center of the first light inlet by the first total reflective mirror；Second laser beam is by the
Two total reflective mirrors and the 3rd total reflective mirror reflex to the center of the second light inlet；Described reative cell is placed on magnetic force vibration instrument, reaction
Indoor location has rotor, is provided with electric pump outside reative cell, and the oral siphon of electric pump is connected with bottom reative cell, the outlet pipe of electric pump
It is linked in reative cell.
In such scheme, it is provided with beam expanding lens between described impulse laser unit and described spectroscope, it is achieved to laser
Expand, after making focusing, form bigger light belt, improve laser and material active area.
In such scheme, between described first total reflective mirror and described first light inlet, it is provided with laser Machining head, described laser
Condenser lens and protective glass is set gradually, it is achieved splash droplet in the course of processing is polluted or damages condenser lens on processing head.
In such scheme, the outlet pipe of described electric pump is provided with reserving liquid tank and effusion meter, electric pump, impulse laser unit,
Magnetic force vibration instrument and effusion meter are all connected with computer, it is achieved at the uniform velocity circulating graphite suspension, make two dimension stone originally
Ink target becomes the three-dimensional target of flowing, substantially increases Stimulated Light active area, and raw material utilization efficiency improves 20% ~
30%。
Beneficial effects of the present invention: it is low that (1) is to overcome synthetic ratio, device operating difficulties, the problem that equipment cost is high,
Achieve Nano diamond continuous synthesis at normal temperatures and pressures, it is thus achieved that even size distribution, favorable dispersibility nanometer
Diamond particles.(2) laser utilizing high power pulsed laser device to send expands through beam expanding lens, and then recycling spectroscope divides
Laser beam auxiliary radiation graphite suspension solution after light, the graphite suspension water column both sides circulated absorb laser energy simultaneously
Amount, transient evaporation, ionization, produce the more a large amount of plasmas produced than single beam laser irradiation, with certain cooldown rate
Form Nano diamond.(3) aqueous medium flowed carries powdered graphite, enables laser persistent loop to radiate, increases further
Laser and graphite mass active area, more improve synthetic ratio.(4) constantly flow simultaneously at graphite water column, send
Two bundle laser radiate in the water column left and right sides respectively, for the spatial environments providing favourable that generates of Nano diamond, raising
The utilization rate of graphite material.
Accompanying drawing explanation
Fig. 1 is assembly of the invention structural representation.
Fig. 2 is the transmission electron microscope figure using commonsense method to prepare Nano diamond granule.
Fig. 3 is the partial enlarged drawing of encircled in Fig. 2.
Fig. 4 is the fast Fourier transform figure of Fig. 2.
Fig. 5 is the low power transmission electron microscope figure of Nano diamond granule prepared by the present embodiment.
Fig. 6 is the high-resolution-ration transmission electric-lens figure of the Nano diamond granule of Fig. 5.
Fig. 7 is the electronogram in Fig. 6 constituency.
Fig. 8 is the grain size analysis histogram in Fig. 6 constituency.
Fig. 9 is typical Nano diamond granule transmission electron microscope picture.
In figure: 1. magnetic force vibration instrument；2. electric pump；3. reserving liquid tank；4. effusion meter；5. computer；6. pulse laser
Device；7. laser；8. beam expanding lens；9. spectroscope；10. the first laser beam；11. first total reflective mirrors；12. laser Machining heads；
13. condenser lenses；14. protective glasses；15. reative cells；16. water inlets；17. first light inlets；18. glass covers；19.
Two total reflective mirrors；20. second laser beams；21. second light inlets；22. the 3rd total reflective mirrors；23. graphite suspensions；24. rotors；
25. first collecting chambers；26. second collecting chambers.
Detailed description of the invention
Below in conjunction with the accompanying drawings and use example to describe the working condition of method and apparatus that the present invention proposes in detail, but not
It is used for limiting the present invention.
The device improving Nano diamond combined coefficient that the present embodiment uses, as it is shown in figure 1, include impulse laser unit
6, spectroscope the 9, first total reflective mirror the 11, second total reflective mirror the 19, the 3rd total reflective mirror 22 and reative cell 15, the sidewall of described reative cell 15
Both sides have the first light inlet 17 and the second light inlet 21, install between described impulse laser unit 6 and described spectroscope 9
Beam expanding lens 8, the laser 7 that described impulse laser unit 6 the sends mirror 9 that is split is had to be divided into the first laser beam 10 and the second laser beam
20, the first laser beam 10 reflexes to the center of the first light inlet 17 by the first total reflective mirror 11；First total reflective mirror 11 and described
It is additionally provided with laser Machining head 12 between one light inlet 17, described laser Machining head 12 is sequentially provided with condenser lens 13 and protective glass
14.Second laser beam 20 reflexes to the center of the second light inlet 21 by the second total reflective mirror 19 and the 3rd total reflective mirror 22；Described instead
Answering room 15 to be placed on magnetic force vibration instrument 1, magnetic force vibration instrument 1 is that heated at constant temperature stirs instrument, in the whipping process by rotor 24
Whether can change with electronic induction temperature.Rotor 24 is refined into by polyvinyl fluoride and magnet steel, high temperature resistant, wear-resisting, chemically-resistant
Burn into magnetic is strong.
Reative cell 15 is respectively provided on two sides with the first collecting chamber 25 and the second collecting chamber 26, is provided with rotor in reative cell 15
24, reative cell 15 is outside is provided with electric pump 2, and the oral siphon of electric pump 2 is connected bottom reative cell 15, and the outlet pipe of electric pump 2 accesses
In reative cell 15.Reserving liquid tank 3 and effusion meter 4, electric pump 2, impulse laser unit 6, magnetic it is additionally provided with on the outlet pipe of described electric pump 2
Power vibration analyzer 1 and effusion meter 4 are all connected with computer 5.
The concrete operation method utilizing said apparatus to carry out improving Nano diamond combined coefficient is: first by graphite microcrystal
Granule and deionized water with concentration than as 0.02g/ml ~ 0.03g/ml is configured to graphite mixed solution, is inserted by mixed solution super
In acoustic vibration instrument, selection ultrasonic power is 90 ~ 120W, ultrasonic temperature 30 ~ 39 DEG C, carry out 20 ~ 40min dispersion make graphite hang
Supernatant liquid, the dispersibility in water of the graphite granule now is optimal.Graphite suspension is inserted in the reative cell 15 of lucite, will
Rotor 24 is put in graphite suspension, covers glass cover 18 and seals；Opening magnetic force vibration instrument 1 makes graphite suspension rotate, so
Be conducive to promoting the degree of scatter of reaction solution, be conducive to improving graphite-phase in course of reaction simultaneously and be transformed into the mistake of diamond phase
Cold degree, accelerates the formation efficiency of diamond phase, and wherein the preferred rotary rpm of graphite suspension is 6 ~ 10r/s, because speed mistake
Little, it is unfavorable for the fully dispersed of graphite suspension；Speed is excessive, suspension center can be made to produce whirlpool, be unfavorable for graphite granule
Dispersed.The power supply opening electric pump 2 makes graphite suspension circulate, and regulation effusion meter 4 makes the circulation of graphite suspension
Speed is between 0.3 ~ 0.6ml/s, because circulation rate is too low, action time is long, can cause graphite flake direct gasification, unfavorable
Generate in diamond；Excessive velocities, action time is short, can produce a large amount of splash droplet and be unfavorable for the collection of product.Open pulse
Laser aid 6, utilizes computer 5 to arrange parameter, and pulse width is 10ns ~ 20ns, and pulse frequency is 1 ~ 10Hz, energy 1 ~ 12J.
The laser light beam expanding lens 8 sent, the active area for follow-up expansion of laser light with graphite granule is laid the groundwork, it is achieved in the identical time
In, improve the purpose of Efficiency of laser action.Regulation impulse laser unit 6 so that it is the laser 7 the sent mirror 9 that is split is divided into first
Laser beam 10 and the second laser beam 20, the first laser beam 10 reflexes to the center of the first light inlet 17 by the first total reflective mirror 11；
Second laser beam 20 reflexes to the center of the second light inlet 21 by the second total reflective mirror 19 and the 3rd total reflective mirror 22；Wherein, first
Laser beam 10 plays a leading role, and the second laser beam 20 helps out, and two-beam utilizes the light transmission of water, hangs through processing graphite
Supernatant liquid 23, improves instantaneous pressure and the temperature of diamond phase in version, improves the sustainable production efficiency preparing Nano diamond,
Utilization ratio of laser energy has reached commonly to prepare 10 ~ 1000 times of Nano diamond method.
Preferably, it is additionally provided with laser Machining head 12, described laser between the first total reflective mirror 11 and described first light inlet 17
Being sequentially provided with condenser lens 13 and protective glass 14 on processing head 12, so, the first laser beam 10 is horizontal through the first light inlet 17
Center after just can focus on the graphite water column circulated, the second laser beam 20 also radiates at the water circulated simultaneously
On post, two bundle laser act on simultaneously, contribute to increasing snap pressure and temperature in course of reaction, improve Nano diamond
Formation efficiency.Preferably, reative cell 15 left and right sides is equipped with the first collecting chamber 25 and the second collecting chamber 26, for collection first
Light inlet 17 and the splash droplet of the second light inlet 21, it is to avoid lens, total reflective mirror are polluted or damage.Treat laser irradiation
After 1.5 hours, close pulse laser 6, magnetic force vibration view 1, water pump 2 successively, the graphite suspension after laser action is entered
Row is dried, purification is boiled in acid and washing processes, and obtains Nano diamond granule.
Specific embodiment 1.
Graphite microcrystal granule and deionized water are configured to concentration than for 0.028g/ml the graphite mixed solution of 350ml,
Being inserted by mixed solution and carry out 40min dispersion in ultrasonic activation instrument and make graphite suspension, dispersant uses ethanol.By graphite
Suspension is inserted in the reative cell of lucite, is put into by rotor in solution, covers glass panel with holes lid, opens magnetic agitation instrument and makes
Graphite suspension rotates, and rotating speed is 8r/s；Opening electric pump power supply makes the circulation of graphite solution get up to form the water column of flowing, regulation stream
Gauge makes graphite suspension circulating water flow speed at 0.5ml/s；Opening impulse laser unit, install beam expanding lens, regulation pulse swashs
Electro-optical device makes the first laser beam after the first total reflective mirror reflection focus on the water circulated horizontal through the first light inlet
On post, the second laser beam after light splitting reflexes on the 3rd total reflective mirror through the second total reflective mirror simultaneously so that the second laser beam water
Put down and radiate on the water column circulated through the second light inlet, utilize the parameter of computer installation impulse laser unit, pulse
Width is 10ns, and pulse frequency is 5Hz, and energy density is 109w/cm2, laser irradiation, after 1 hour 30 minutes, closes pulse successively
Laser aid, magnetic force vibration instrument, water pump.Be dried the graphite suspension after laser action, purification is boiled in acid and washing processes,
Obtain Nano diamond granule.
The Nano diamond particulates' properties that embodiment 1 is obtained by the present invention has carried out experimental verification.Fig. 2 is for using common side
Method prepares the low power transmission electron microscope figure of Nano diamond granule, it can be seen that diamond crystals surface covers
One layer of amorphous carbon, by lattice fringe spacing in Fig. 3 partial enlarged drawing, record 0.2528nm corresponding to cubic diamond structure
The interplanar distance of (110) family of crystal planes, Fig. 3 is carried out fast Fourier transform and obtains Fig. 4, therefrom demonstrate the life of diamond phase
Become, but only observe minimal amount of Nano diamond granule.Fig. 5 is the low power of Nano diamond granule prepared by the present embodiment
Transmission electron microscope figure.Fig. 5 does not observes agraphitic carbon and the material of class graphene-structured, illustrates effectively to eliminate non-
Diamond impurity, it may also be seen that nanoparticle size is uniform, the most spherical in shape.Fig. 6 is the Nano diamond amplified
These granule amplifying observations are determined that it is diamond crystal phase, obtain a large amount of 2 according to grain size analysis by granule projection Electronic Speculum figure
The Nano diamond granule of ~ 10nm, its favorable dispersibility, size uniform.Fig. 7 is the electronogram in Fig. 6 constituency.The most permissible
Finding out that it is a series of donuts, the radius squared of diffraction ring is than for 3:8:11 ..., corresponding to diamond 111},
{ 220}, { 311} ... crystal face.Fig. 8 is the grain size analysis histogram in Fig. 6 constituency, and Fig. 9 is the typical Nano diamond generated
Grain transmission electron microscope picture, the Nano diamond granular size that can obtain obtaining focuses mostly at 2 ~ 5nm.
Claims (11)
1. the method improving Nano diamond combined coefficient, comprises the steps:
A: prepare graphite mixed solution with graphite microcrystal granule and deionized water, and graphite mixed solution vibration dispersion is made stone
Ink suspension；
B: be placed in closed reaction vessel by graphite suspension, is provided with circulation electric pump outside closed reaction vessel, circulate electric pump
Oral siphon is connected with bottom closed reaction vessel, and circulation electric pump outlet pipe is linked in closed reaction vessel so that graphite suspends
Liquid realizes circulating under the effect of circulation electric pump；Use agitating device to keep graphite suspension at closed reaction vessel simultaneously
The middle moment is in constant temperature at the uniform velocity rotation status；
C: use the first laser beam and the second laser beam to circulating the graphite suspension water column in electric pump outlet pipe in reaction vessel
Carry out laser irradiation simultaneously；Then be dried the graphite suspension after laser irradiation, purification is boiled in acid and washing processes, finally
Obtain high-quality Nano diamond granule.
A kind of method improving Nano diamond combined coefficient the most according to claim 1, it is characterised in that in step A,
Graphite microcrystal granule is crystalline flake graphite microcrystal grain, phosphorus content 99.99%, and granularity is 1 ~ 10 μm；Graphite microcrystal granule and deionization
The concentration of water than the proportions graphite mixed solution for 0.02g/ml ~ 0.03g/ml, and use ethanol as graphite dispersing solution,
20 ~ 40min is vibrated in ultrasonic activation instrument.
A kind of method improving Nano diamond combined coefficient the most according to claim 1, it is characterised in that in step B,
Agitating device is made up of magnetic force vibration instrument and rotor, and closed reaction vessel is integrally placed on magnetic force vibration instrument, and rotor is placed on
In the graphite suspension of closed reaction vessel.
A kind of method improving Nano diamond combined coefficient the most according to claim 3, it is characterised in that described magnetic force
Vibration analyzer is that heated at constant temperature stirs instrument, is stirred by the constant temperature of rotor, and described magnetic force vibration instrument is used for whether temperature sensor occurs
Change；Described rotor is refined into by polyvinyl fluoride and magnet steel.
A kind of method improving Nano diamond combined coefficient the most according to claim 3, it is characterised in that graphite suspends
Liquid rotary speed in closed reaction vessel is 6 ~ 10r/s, and rotating speed is steady；Graphite suspension following under circulation electric pump effect
Ring flowing velocity is 0.3 ~ 0.6ml/s.
A kind of method improving Nano diamond combined coefficient the most according to claim 1, it is characterised in that in step C,
First laser beam and the second laser beam are to be sent by same impulse laser unit, and the laser that impulse laser unit sends leads in advance
Cross after beam expanding lens expands and be split again.
7. according to a kind of method improving Nano diamond combined coefficient described in claim 1 or 6, it is characterised in that first
Laser beam and the second laser beam are higher than the graphite suspension liquid level 2 ~ 5mm in closed reaction vessel.
8. the device improving Nano diamond combined coefficient, it is characterised in that include impulse laser unit (6), spectroscope
(9), the first total reflective mirror (11), the second total reflective mirror (19), the 3rd total reflective mirror (22) and reative cell (15), described reative cell (15)
Sidewall both sides have the first light inlet (17) and the second light inlet (21), the laser that described impulse laser unit (6) sends
(7) mirror (9) that is split is divided into the first laser beam (10) and the second laser beam (20), and the first laser beam (10) passes through the first total reflective mirror
(11) center of the first light inlet (17) is reflexed to；Second laser beam (20) passes through the second total reflective mirror (19) and the 3rd total reflective mirror
(22) center of the second light inlet (21) is reflexed to；Described reative cell (15) is placed on magnetic force vibration instrument (1), reative cell (15)
Rotor (24) is inside installed, the outside electric pump (2) that is provided with of reative cell (15), the oral siphon of electric pump (2) and reative cell (15) bottom
Being connected, the outlet pipe of electric pump (2) is linked in reative cell (15).
A kind of device improving Nano diamond combined coefficient the most according to claim 8, it is characterised in that described pulse
It is provided with beam expanding lens (8) between laser aid (6) and described spectroscope (9), it is achieved laser is expanded, is formed relatively after making focusing
Big light belt, improves laser and material active area.
A kind of device improving Nano diamond combined coefficient the most according to claim 8 or claim 9, it is characterised in that described
Laser Machining head (12) it is provided with, on described laser Machining head (12) between first total reflective mirror (11) and described first light inlet (17)
Set gradually condenser lens (13) and protective glass (14), it is achieved splash droplet in the course of processing is polluted or damages condenser lens
(13).
11. a kind of devices improving Nano diamond combined coefficient according to claim 8 or claim 9, it is characterised in that described
Reserving liquid tank (3) and effusion meter (4), electric pump (2), impulse laser unit (6), magnetic force vibration it is provided with on the outlet pipe of electric pump (2)
Instrument (1) and effusion meter (4) are all connected with computer (5), it is achieved at the uniform velocity circulating graphite suspension, make two dimension stone originally
Ink target becomes the three-dimensional target of flowing, substantially increases Stimulated Light active area, and raw material utilization efficiency improves 20% ~
30%。
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| CN110139728A (en) * | 2016-12-28 | 2019-08-16 | 原子能及能源替代委员会 | It can get the pulse laser machining method of the diamond on glossy clear surface |
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