CN110082194A - Coating material original position stretching observation method - Google Patents
Coating material original position stretching observation method Download PDFInfo
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- CN110082194A CN110082194A CN201910369203.0A CN201910369203A CN110082194A CN 110082194 A CN110082194 A CN 110082194A CN 201910369203 A CN201910369203 A CN 201910369203A CN 110082194 A CN110082194 A CN 110082194A
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- 238000000576 coating method Methods 0.000 title claims abstract description 152
- 239000011248 coating agent Substances 0.000 title claims abstract description 151
- 239000000463 material Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 78
- 239000011159 matrix material Substances 0.000 claims abstract description 69
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 6
- 238000004049 embossing Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 12
- 230000023753 dehiscence Effects 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 7
- 238000004458 analytical method Methods 0.000 abstract description 6
- 239000000523 sample Substances 0.000 description 38
- 238000005507 spraying Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 238000005336 cracking Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000011065 in-situ storage Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000009659 non-destructive testing Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 238000000227 grinding Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/225—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion
- G01N23/2251—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion using incident electron beams, e.g. scanning electron microscopy [SEM]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of coating material original position stretching observation methods, comprising: chooses matrix of samples；Coating material to be observed is sprayed in the matrix of samples；Speckle label is carried out to the coating material；The matrix of samples for being coated with coating material is sent into scanning electron microscope；Coating material to the matrix of samples and thereon stretches；Continuously shot images are carried out to the coating material using the scanning electron microscope or carry out overall process video recording.Coating material original position stretching observation method according to an embodiment of the present invention can observe the dehiscence process of coating material in detail, conducive to the micromechanism of damage of the analysis coating material germinating of crackle and extension mechanism and material during stretching.
Description
Technical field
The present invention relates to field of non destructive testing, more particularly, to a kind of coating material original position stretching observation method.
Background technique
Probing into for coating material mechanics properties testing and micromechanism of damage in the related technology is usually tried using universal tensile
Machine is tested to carry out under macro-scale, for example, by using the tension crack process of the method observation coating of high resolution camera shooting, and
In conjunction with the strain variation situation of Digital Image Correlation Method measurement coating front surface.
Since coating material mostly passes through what the methods of plasma spraying or physical vapour deposition (PVD) were prepared, due to spray
The particularity of coating method, the coating thickness of coating material may be subjected to limitation, such as the spraying system of certain ceramic coating materials
Standby thickness is generally within the scope of tens microns to several millimeters, since thickness is smaller, even if so utilizing under macro-scale
High resolution camera also it is more difficult in detail observe coating material dehiscence process, coating material can not be effectively observed and stretched
The micromechanism of damage of the germinating of crackle and extension mechanism and material in journey.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, one object of the present invention
It is to propose a kind of coating material original position stretching observation method, which can observe in detail
The dehiscence process of coating material, conducive to analysis the coating material germinating of crackle and extension mechanism and material during stretching
Micromechanism of damage.
Embodiment according to the present invention proposes that a kind of coating material original position stretching observation method, the coating material are drawn in situ
Stretching observation method includes: selection matrix of samples；Coating material to be observed is sprayed in the matrix of samples；To the coating material
Material carries out speckle label；The matrix of samples for being coated with coating material is sent into scanning electron microscope；To the matrix of samples and
Coating material thereon is stretched；Using the scanning electron microscope to the coating material carry out continuously shot images or
Carry out overall process video recording.
Coating material original position stretching observation method according to an embodiment of the present invention can observe opening for coating material in detail
Process is split, conducive to the micromechanism of damage of the analysis coating material germinating of crackle and extension mechanism and material during stretching.
Some specific embodiments according to the present invention carry out speckle mark to the coating material using nanometer embossing
Note.
Some specific embodiments according to the present invention stretch the matrix of samples and coating thereon using original position stretching machine
Material.
Further, after carrying out speckle label, the both ends of the matrix of samples are individually fixed in the original position stretching
Machine, and the original position stretching machine and the matrix of samples are fed together the scanning electron microscope.
Further, before the original position stretching machine and the matrix of samples are sent into the Scanning Electron microscope,
Processing is dusted to the original position stretching machine.
Some specific embodiments according to the present invention are stretched when stretching the matrix of samples and coating material thereon
Rate linear regulation in the range of 0.036mm/min~1mm/min.
Some specific embodiments according to the present invention, it is maximum when stretching the matrix of samples and coating material thereon
Load capacity is 1kN.
Some specific embodiments according to the present invention are stretched when stretching the matrix of samples and coating material thereon
Maximum range be 10mm.
Some specific embodiments according to the present invention are handled described image or video recording, to obtain the coating material
Expect the strain size and its change procedure on surface.
Some specific examples according to the present invention, the coating material original position stretching observation method further include: described in stretching
When matrix of samples and coating material thereon, is popped one's head in using acoustic emission detection and receive stress wave and be converted into electric signal；To described
Electric signal amplifies；The electric signal is handled, the relevant information of the variation occurred inside the coating material is obtained.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of coating material original position stretching observation system according to an embodiment of the present invention.
Fig. 2 is that the structure of the first matrix of samples of coating material original position stretching observation system according to an embodiment of the present invention is shown
It is intended to.
Fig. 3 is that the structure of the second matrix of samples of coating material original position stretching observation system according to an embodiment of the present invention is shown
It is intended to.
Fig. 4 is the structure of the acoustic emission detection probe of coating material original position stretching observation system according to an embodiment of the present invention
Schematic diagram.
Fig. 5 is that the structure of the sealed guide device of coating material original position stretching observation system according to an embodiment of the present invention is shown
It is intended to.
Fig. 6 is the flow chart of coating material original position stretching observation method according to an embodiment of the present invention.
Appended drawing reference:
Coating material original position stretching observation system 1,
Original position stretching machine 100, workbench 110, slide rail 111, anticreep groove 112, the first objective table 120, first folder
Plate 121, the first threaded hole 122, the first dowel hole 123, the second objective table 130, second clamping plate 131, the second threaded hole 132,
Second dowel hole 133, driver 140, sliding guide 141, drive screw 142,
First matrix of samples 200, the first fixed section 210, the second fixed section 220, the first linkage section 230, the first spray-coating surface
231、
Second matrix of samples 300, third fixed section 310, the 4th fixed section 320, the second linkage section 330, the second spray-coating surface
331、
Vacuum sample storehouse 400,
Acoustic emission detection probe 500, magnetic crust 510, cylinder 511, end cap 512, crossed beam trunking 513, probe body 520, line
Cable 530,
Sealed guide device 600, conduit 610, baffle ring 611, flexible gaskets 612, sealing cover 620, flexible top
621, self-sealing cable port 622.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In the present invention
Description in, " fisrt feature ", " second feature " may include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more.
Coating material mechanics properties testing and micromechanism of damage are probed into the related technology and tested mostly using universal tensile
Machine carries out under macro-scale, generallys use the tension crack process of the method observation coating of high resolution camera shooting, and ties
Close the strain variation situation of Digital Image Correlation Method measurement coating front surface.
It needs to make tensile sample matrix under normal conditions, coating material to be tested is then sprayed on basis material, it
Typical spray speckle is carried out to coating material surface afterwards, it is therefore an objective to calculate strain for subsequent digital image correlation method and mark is provided
Point.Tension test is carried out to tensile sample using universal tensile testing machine after being ready to complete, needs to utilize height in experimentation
Resolution camera records drawing process to observe the detailed process of coating cracking, and serialograph, so as to utilize number
The strain variation situation of word DIC Method calculating coating front surface.
The changing rule of speckle during stretching is calculated using digital picture related algorithm, obtains strain stress relation.It will apply
Layer material is broadly divided into 4 stages to face crack cracking in receiving tensile load:
(1) when coating just starts to bear tensile load, irregular variation is presented in strain；
(2) with the increase of tensile load, coating surface strain is orderly fluctuation status, is similar to sine curve, maximum
Strain is respectively wave crest and trough with minimum strain, and wave crest and trough are constantly mobile to same direction；
(3) when tensile load reaches certain phase, the fraction areal strain of coating is sharply increased；
(4) it when the strain of the coating area sharply increased reaches capacity, i.e., the stress in region reaches ultimate tensile, applies
Layer is broken.
But since coating is too thin, this method can only detect coating surface strain variation and crack propagation, can not observe
The changing rule extended to the lateral position Interface Crack and face crack of coating to Interface Crack.
The observing interface crackle and face crack generallyd use to the method that Interface Crack extends be by controlling omnipotent examination
Test the load gradual change realization of machine.Such as prepare the identical multiple matrix of samples for being coated with coating material of parameter, respectively with gradually
Increased constantly acting load tensile sample matrix stops stretching, sample is removed tensile sample when stretching reaches determined load
Section metallographic specimen is made, observed under a scanning electron microscope to determine crackle form in drawing process and crackle transformation
Process.But this method can not real time reaction crackle expansion process, and the selection of load range have it is certain random
Property, cause resulting crackle discontinuous with tensile load changing rule, the accuracy of crack propagation process may be will affect.In addition
It is lack of standardization due to grinding and polishing in the preparation process of observation sample, it is likely to result in cracked inside brittle coating, influences to tie
The accuracy of fruit observation.
In view of the status of the relevant technologies coating material tension test observed pattern, embodiment according to the present invention is proposed
Below with reference to the accompanying drawings it is in situ to describe coating material according to an embodiment of the present invention for a kind of coating material original position stretching observation system 1
Stretch observation system 1.
As Figure 1-Figure 5, coating material original position stretching observation system 1 according to an embodiment of the present invention includes original position stretching
Machine 100, matrix of samples, scanning electron microscope and computer system (not shown).
The matrix of samples is equipped with the spray-coating surface of coating to be measured, and the matrix of samples is fixed on original position stretching machine 100, in situ
Stretching-machine 100 stretches the matrix of samples and coating to be measured thereon when working.The scanning electron microscope has vacuum sample
Product storehouse 400, original position stretching machine 100 are set in vacuum sample storehouse 400, and the scanning electron microscope is drawn in the coating to be measured
Continuously shot images or progress overall process video recording when stretching.The computer system respectively with the scanning electron microscope and original position
Stretching-machine 100 is connected, using loading by means of digital image correlation method to picture handled to obtain coating material surface strain size and
Its change procedure.
Coating material original position stretching observation system 1 according to an embodiment of the present invention can be placed in scanning electricity by setting
Original position stretching machine 100 in the microscopical vacuum sample storehouse 400 of son, so as to utilize the scanning electron microscope to stretching
Process is observed, and is realized the dehiscence process from micro-nano rank observation coating, can clearly be captured coating cracking
Detailed process, the position including crack initiation, the path of crack propagation and speed etc..Furthermore with scanning electron microscope in height
In-situ observation is carried out under amplification factor, can observe the variation of coating material microscopic appearance, helps to analyze coating cracking
Mechanism.
It for example, during stretching can be with synchronous recording displacement/load signal, so as to realize to coating material
The analysis of mechanical property；And the change procedure of coating material can be recorded, under micro-nano-scale so as to infer coating
Micromechanism of damage of material during stretching/compressing；A label is identified on coating surface to be observed with nano-imprinting method
Later, the image shot during stretching experiment using loading by means of digital image correlation method processing scanning electron microscope, can obtain
Obtain the strain size and local train change procedure of coating surface.
Therefore, coating material original position stretching observation system 1 according to an embodiment of the present invention, can observe coating material in detail
The dehiscence process of material, conducive to the damage machine of the analysis coating material germinating of crackle and extension mechanism and material during stretching
Reason.
In some specific examples of the invention, as shown in Figure 1, coating material original position stretching observation system 1 further includes sound
Emit detection probe 500, signal amplifier (not shown) and signal processor (not shown).
Acoustic emission detection probe 500 is set in vacuum sample storehouse 400 and contacts with matrix of samples.The signal amplifier is set
It is outer in vacuum sample storehouse 400 and be connected with acoustic emission detection probe 500 signal processor described in and the letter by cable 530
Number amplifier is connected.When the coating to be measured is stretched, coating material cracks and in crack propagation process, can release
Stress wave receives stress wave using acoustic emission detection probe 500, is converted into electric signal, then in turn through signal amplifier, letter
It can be obtained and record corresponding acoustic emission signal after number processor, then handled by the corresponding data to acoustic emission signal, can be obtained
The relevant information of the variation occurred inside to coating material.Pass through further 500, signal of setting acoustic emission detection probe as a result,
Amplifier and signal processor can carry out sound emission non-destructive testing under vacuum conditions.
In some embodiments of the invention, as shown in figure 4, acoustic emission detection probe 500 includes 510 He of magnetic crust
Probe body 520.
The matrix of samples is metalwork, such as ferrous alloy part, and magnetic crust 510 is using magnetic absorption in the sample base
Body.Probe body 520 is set in magnetic crust 510 and is connected by cable 530 with the signal amplifier.
Due to the size limitation in the vacuum sample storehouse 400 of scanning electron microscope, original position stretching machine 100 and matrix of samples
Size is smaller, by the way that magnetic crust 510 is arranged, so as to which acoustic emission detection probe 500 is quickly and conveniently fixed on sample
On matrix, so that acoustic emission detection probe 500 is in close contact with matrix of samples.
Specifically, magnetic crust 510 includes cylinder 511 and end cap 512.The both ends open of cylinder 511, end cap 512 cover
One end of cylinder 511, end cap 512 are adsorbed in the matrix of samples, and probe body 520 is matched with cylinder from the other end of cylinder 511
In body 511.
Wherein, for the ease of cabling, one end of the separate end cap 512 of cylinder 511 is equipped with crossed beam trunking 513, and cable 530 passes through
Crossed beam trunking 513.
In some specific examples of the invention, as shown in figure 5, coating material original position stretching observation system 1 further includes close
Seal wire installation 600.
The side wall in vacuum sample storehouse 400 is equipped with the cable-through hole passed through for cable 530, and sealed guide device 600 is installed on institute
It states at the cable-through hole of side wall and cooperates with cable 530, sealed guide device 600 seals between cable 530 and the cable-through hole
Gap.
Specifically, sealed guide device 600 includes conduit 610 and sealing cover 620.
Conduit 610 is worn from the side of the side wall to the other side by the cable-through hole, such as is worn from inside to outside,
The outer peripheral surface of conduit 610 and the inner peripheral surface of cable-through hole fit closely, and cable 530 passes through conduit 610.620 screw thread of sealing cover
Be matched with conduit 610, sealing cover 620 has flexible top 621 and flexible top 621 be configured with cable 530 cooperate from
Seal cable port 622.
Wherein, one end of conduit 610 is configured with baffle ring 611, and 611 backstop of baffle ring is in the side of the side wall
(such as inside), and flexible gaskets 612 are equipped between baffle ring 611 and the side wall, flexible top 621 and flexible gaskets 612 can
To use silicone rubber material.
Since original position stretching machine 100 is in vacuum sample storehouse 400, entire working environment is airtight vacuum environment, and sound
Transmitting detection probe 500 need to be contacted with matrix of samples, be then connected by cable 530 with external signal amplifier, therefore,
It, can be while keeping vacuum tightness environment by the cable of acoustic emission detection probe 500 by the way that sealed guide device 600 is arranged
530 pick out outside vacuum sample storehouse 400.
In some embodiments of the invention, as shown in Figure 1, original position stretching machine 100 includes workbench 110, first
Objective table 120, the second objective table 130 and driver 140.
First objective table 120 and the second objective table 130 are set to workbench 110, the first objective table 120 and the second objective table
At least one of 130 can be mobile to the direction far from another, and the first objective table 120 is fixed in one end of the matrix of samples
And the other end is fixed on the second objective table 130.In driver 140 and the first objective table 120 and the second objective table 130 it is described extremely
A few transmission connection, when the first objective table 120 and the second objective table 130 are relatively distant from movement, tensile sample matrix, to draw
Stretch the coating material in matrix of samples.
Further, workbench 110 is equipped with slide rail 111, the institute in the first objective table 120 and the second objective table 130
It states at least one to slidably engage in slide rail 111, to guarantee that the first objective table 120 and/or the second objective table 130 are mobile
When with the alignment of workbench 110.Driver 140 is connected with sliding guide 141, the first objective table 120 and the second objective table 130
In it is described at least one slidably engage in sliding guide 141, to guarantee the first objective table 120 and/or the second objective table
130 it is mobile when alignment with driver 140.
Wherein, the both side surface of slide rail 111 is equipped with anticreep groove 112, the first objective table 120 and the second objective table
In 130 it is described at least one be equipped with and be matched with the anticreep rib of anticreep groove 112, to prevent the first objective table 120 and second
At least one described disengaging slide rail 111 in objective table 130.
In some specific examples of the invention, driver 140 is servo motor, and the motor shaft of the servo motor passes through
Shaft coupling is connected with drive screw 142, in drive screw 142 and the first objective table 120 and the second objective table 130 it is described at least
One is threadedly engaged, by the rotary motion of motor shaft be converted into the first objective table 120 and the second objective table 130 described in extremely
Few one linear movement.For example, there is contrary screw thread at the both ends of drive screw 142 respectively, drive screw 142 turns
The dynamic function of driving the first objective table 120 and the second objective table 130 to reach stretching to reverse movement respectively.
In some embodiments of the invention, as shown in Figure 1, the first objective table 120 is equipped with dismountable first folder
Plate 121, the second objective table 130 are equipped with dismountable second clamping plate 131, and one end of the matrix of samples is clamped in the first loading
Between platform 120 and first clamping plate 121, the other end of the matrix of samples is clamped in the second objective table 130 and second clamping plate 131
Between.
Specifically, as shown in Figure 1, first clamping plate 121 is equipped with the first threaded hole 122 and the first dowel hole 123, example
Such as, the first threaded hole 122 is two and the first dowel hole 123 is located between two the first threaded holes 122, first clamping plate 121
The first threaded fastener (such as bolt) by being matched with the first threaded hole 122 is removably installed in the first objective table 120,
First clamping plate 121 carries out described one end of the matrix of samples by being matched with the first positioning pin of the first dowel hole 123
Fixed, which can be further inserted into the first objective table 120.
Second clamping plate 131 is equipped with the second threaded hole 132 and the second dowel hole 133, for example, the second threaded hole 132 is two
A and the second dowel hole 133 is located between two the second threaded holes 132, and second clamping plate 131 is by being matched with the second threaded hole
132 the second threaded fastener (such as bolt) is removably installed in the second objective table 130, and second clamping plate 131 passes through cooperation
The other end of the matrix of samples is fixed in the second positioning pin of the second dowel hole 133, second positioning pin
The second objective table 130 can be further inserted into.
In some specific examples of the invention, the rate of extension, maximum load of original position stretching machine 100, scanning electron are aobvious
The amplification factor and observation scope of micro mirror can real-time quantitative adjust, rate of extension may be implemented in 0.036mm/min~1mm/min
In the range of linear regulation, maximum load amount can reach 1kN, stretches maximum range up to 10mm, can meet different performance
The testing requirement of coating material.
In view of the coating of such as ceramic fragile material, elastic deformation stage is very short during stretching, fracture behaviour
Generation is very rapid, when being tested using large-scale cupping machine, since testing machine tensile load is higher, stretches speed
Rate is very fast, therefore is difficult to capture the detailed fracture process of coating material.
Original position stretching machine 100 according to an embodiment of the present invention, rate of extension adjustable extent is in 0.036mm/min-
Within the scope of 1mm/min, by slowing down rate of extension, it can be achieved that " delay " Tensile Fracture Process to brittle ceramic coating, thus
Observation coating material may be implemented slowly to crack to the detailed process for disconnecting peeling.
In some embodiments of the invention, as shown in Figures 2 and 3, the matrix of samples includes the first sample base
Body 200 and the second matrix of samples 300.Wherein, from the first matrix of samples 200 is used to carry out from the front of coating material, second
Matrix of samples 300 is for from carrying out from the side of coating, crackle to sprout when thus, it is possible to obtain coating cracking in further detail
The relevant informations such as raw and extension and surface strain situation of change.
Specifically, as shown in Fig. 2, the first matrix of samples 200 includes the first fixed section 210, the second fixed section 220 and the
One linkage section 230.
First fixed section 210 and the second fixed section 220 are respectively equipped with location hole, to pass through the first positioning pin and the respectively
Two positioning pins are fixed on the first objective table 120 and the second objective table 130.First linkage section 230 is connected to 210 He of the first fixed section
Between second fixed section 220.
Wherein, the width of the first fixed section 210 is equal with the width of the second fixed section 220 and is greater than the first linkage section 230
Width, the thickness of the first fixed section 210, the second fixed section 220 the thickness of thickness and the first linkage section 230 be equal to each other,
The upper surface of first linkage section 230 is formed with the first spray-coating surface 231, and coating spraying is convenient for scanning electron in the first spray-coating surface 231
The front of micro- sem observation coating.
As shown in figure 3, the second matrix of samples 300 includes third fixed section 310, the 4th fixed section 320 and the second linkage section
330。
Third fixed section 310 and the 4th fixed section 320 are respectively equipped with location hole, to pass through the first positioning pin and the respectively
Two positioning pins are fixed on the first objective table 120 and the second objective table 130.Second linkage section 330 is connected to 310 He of third fixed section
Between 4th fixed section 320.
Wherein, the width of third fixed section 310 is equal with the width of the 4th fixed section 320 and is greater than the second linkage section 330
Width, the thickness of third fixed section 310 is equal with the thickness of the 4th fixed section 320 and thickness less than the second linkage section 330,
The side surface of second linkage section 330 is formed with the second spray-coating surface 331, and coating spraying is convenient for scanning electron in the second spray-coating surface 331
The side of micro- sem observation coating.
By designing the matrix of samples of two kinds of different structures, coating material can be effectively observed after spraying and is being drawn
The situation of change of front surface and side during stretching can stretch in addition by the high-amplification-factor of scanning electron microscope
Processing is marked using nano-imprinting method to the front of coating and side before test, then utilizes loading by means of digital image correlation method
The photo that processing scanning electron microscope is shot can obtain the strained situation of coating front and side simultaneously.
Coating material original position stretching observation method according to an embodiment of the present invention, the coating material are described below with reference to Fig. 6
Expect that original position stretching observation method includes:
Choose matrix of samples, i.e., according to coating material attribute choose matrix of samples, such as choose the first matrix of samples 200 or
Second matrix of samples 300；
Coating material to be observed is sprayed in the matrix of samples；
To the coating material carry out speckle label, such as using nanometer embossing the surface to be observed of coating (just
Face or side) carry out speckle label；
The matrix of samples for being coated with coating material is sent into scanning electron microscope；
Coating material to the matrix of samples and thereon stretches；
Continuously shot images are carried out to the coating material using the scanning electron microscope or carry out overall process video recording.
Coating material original position stretching observation method according to an embodiment of the present invention can observe opening for coating material in detail
Process is split, conducive to the micromechanism of damage of the analysis coating material germinating of crackle and extension mechanism and material during stretching.
In some specific examples of the invention, the matrix of samples and thereon can be stretched using original position stretching machine 100
Coating material.
Specifically, after carrying out speckle label, the both ends of the matrix of samples are individually fixed in original position stretching machine 100,
Location hole in matrix of samples is aligned with the location hole on the first objective table 120 and the second objective table 130, covers first clamping plate
121 and second clamping plate 131, it is inserted into the first positioning pin and the second positioning pin, tightens the first threaded fastener and the second screw threads for fastening
Then original position stretching machine 100 and the matrix of samples are fed together the scanning electron microscope by part, before this can be right
Original position stretching machine 100 is dusted processing.
400 side of vacuum sample storehouse has chip and scanning electron microscope to connect, it can be achieved that computer system is to original
The control of position stretching-machine 100.The parameters such as rate of extension, tensile load are set on the computer systems, for example, rate of extension exists
Linear regulation in the range of 0.036mm/min~1mm/min, maximum load amount are 1kN, and the maximum range of stretching is 10mm, so
Adjustment scanning electron microscope finds region to be observed to defocused to suitable amplification factor afterwards.It is aobvious to be then turned on scanning electron
Micro mirror kinescope recording function can start stretching experiment and be observed, and can suspend original position stretching machine at any time during stretching
100, high magnification numbe photographing operation then is carried out using scanning electron microscope, can get the correlated process figure of coating germinating and extension
Piece.Described image or video recording are handled, to obtain the strain size and its change procedure on the coating material surface.
In some specific examples of the invention, while observing coating material original position stretching, sound hair can also be carried out
Non-destructive testing is penetrated, specifically, when stretching the matrix of samples and coating material thereon, is connect using acoustic emission detection probe 500
It receives stress wave and is converted into electric signal, the electric signal is amplified, the electric signal is handled, obtains the coating
The relevant information for the variation that material internal occurs.
Coating material original position stretching observation system 1 and method according to an embodiment of the present invention, utilize scanning electron microscope
The tension crack process that thin coating materials are observed from micro-scale, can show damage of material under the conditions of extension test completely
Injure dehiscence process.And it is possible to which the rate of extension and load by adjusting original position stretching machine 100 realize that brittle coating material is slow
Slow dehiscence process.Furthermore, it is possible to the strained situation of coating front surface and side be measured simultaneously, using scanning electron microscope to drawing
It stretches test process to be recorded at any time or whole record, and can be realized sound emission non-destructive testing.
In the description of this specification, the description of reference term " specific embodiment ", " specific example " etc. means to combine and be somebody's turn to do
Embodiment or example particular features, structures, materials, or characteristics described are contained at least one embodiment of the present invention or show
In example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of coating material original position stretching observation method characterized by comprising
Choose matrix of samples；
Coating material to be observed is sprayed in the matrix of samples；
Speckle label is carried out to the coating material；
The matrix of samples for being coated with coating material is sent into scanning electron microscope；
Coating material to the matrix of samples and thereon stretches；
Continuously shot images are carried out to the coating material using the scanning electron microscope or carry out overall process video recording.
2. coating material original position stretching observation method according to claim 1, which is characterized in that utilize nanometer embossing
Speckle label is carried out to the coating material.
3. coating material original position stretching observation method according to claim 1, which is characterized in that drawn using original position stretching machine
Stretch the matrix of samples and coating material thereon.
4. coating material original position stretching observation method according to claim 3, which is characterized in that carrying out speckle label
Afterwards, the both ends of the matrix of samples are individually fixed in the original position stretching machine, and by the original position stretching machine and the sample
Matrix is fed together the scanning electron microscope.
5. coating material original position stretching observation method according to claim 4, which is characterized in that by the original position stretching
Machine and the matrix of samples are sent into before the Scanning Electron microscope, are dusted processing to the original position stretching machine.
6. coating material original position stretching observation method according to claim 1, which is characterized in that stretching the sample base
When body and coating material thereon, rate of extension linear regulation in the range of 0.036mm/min~1mm/min.
7. coating material original position stretching observation method according to claim 1, which is characterized in that stretching the sample base
When body and coating material thereon, maximum load amount is 1kN.
8. coating material original position stretching observation method according to claim 1, which is characterized in that stretching the sample base
When body and coating material thereon, the maximum range of stretching is 10mm.
9. coating material original position stretching observation method according to claim 1, which is characterized in that described image or video recording
It is handled, to obtain the strain size and its change procedure on the coating material surface.
10. coating material original position stretching observation method according to claim 1 to 9, which is characterized in that also wrap
It includes:
When stretching the matrix of samples and coating material thereon, is popped one's head in using acoustic emission detection and receive stress wave and be converted into electricity
Signal；
The electric signal is amplified；
The electric signal is handled, the relevant information of the variation occurred inside the coating material is obtained.
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Cited By (1)
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| CN113176204A (en) * | 2021-04-30 | 2021-07-27 | 广东省科学院新材料研究所 | Detection method and pretreatment method for interface bonding state of deposition unit and substrate |
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