CN110029302B - Coating spraying tool for sample matrix for in-situ tensile observation of coating material - Google Patents

Coating spraying tool for sample matrix for in-situ tensile observation of coating material Download PDF

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CN110029302B
CN110029302B CN201910368708.5A CN201910368708A CN110029302B CN 110029302 B CN110029302 B CN 110029302B CN 201910368708 A CN201910368708 A CN 201910368708A CN 110029302 B CN110029302 B CN 110029302B
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shielding layer
fixing
coating
sample
section
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CN110029302A (en
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底月兰
王乐
王海斗
董丽虹
刘明
邢志国
唐令
刘韬
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Academy of Armored Forces of PLA
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    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134Plasma spraying
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating 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
    • G01N23/22Investigating 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
    • G01N23/2202Preparing specimens therefor
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating 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
    • G01N23/22Investigating 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
    • G01N23/225Investigating 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
    • G01N23/2251Investigating 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]
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/06Special adaptations of indicating or recording means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0017Tensile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/026Specifications of the specimen
    • G01N2203/0262Shape of the specimen
    • G01N2203/0278Thin specimens
    • G01N2203/0282Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/0641Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0682Spatial dimension, e.g. length, area, angle

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Abstract

The invention discloses a coating spraying tool for a sample matrix for in-situ tensile observation of a coating material, which comprises: the first shielding layer wraps the first fixing section; the second shielding layer wraps the second fixing section; the first fixing pin is inserted into the first positioning hole and penetrates through the first shielding layer; the second fixing pin is inserted into the second positioning hole and penetrates through the second shielding layer; and the clamp is used for clamping the sample matrixes and enabling the spraying surfaces of the sample matrixes to face the same direction. The coating spraying tool provided by the embodiment of the invention can spray a coating on a small-sized sample substrate, so that the coating can be observed by a scanning electron microscope, and further, the analysis of the crack initiation and propagation mechanism and the material damage mechanism of a coating material in the stretching process is facilitated.

Description

Coating spraying tool for sample matrix for in-situ tensile observation of coating material
Technical Field
The invention relates to the field of coating test tests, in particular to a coating spraying tool for a sample substrate for in-situ tensile observation of a coating material.
Background
In the related art, the mechanical property detection and damage mechanism of the coating material are usually investigated by using a universal tensile testing machine at a macroscopic scale, for example, a high-resolution camera shooting method is adopted to observe the tensile cracking process of the coating, and a digital image related method is combined to measure the strain change condition of the front surface of the coating.
Because the coating material is mostly prepared by plasma spraying or physical vapor deposition and the like, the spraying thickness of the coating material may be limited due to the particularity of the spraying method, for example, the spraying thickness of some ceramic coating materials is generally in the range of tens of micrometers to several millimeters, and because the thickness is small, the cracking process of the coating material is difficult to observe in detail even by using a high-resolution camera under the macroscopic scale, and the crack initiation and expansion mechanism and the material damage mechanism of the coating material in the stretching process cannot be effectively observed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, one object of the present invention is to provide a coating spraying tool for a sample substrate for in-situ tensile observation of a coating material, which is capable of spraying a coating on a small-sized sample substrate so as to be observed by a scanning electron microscope, thereby facilitating analysis of crack initiation and propagation mechanisms and material damage mechanisms of the coating material during a tensile process.
According to an embodiment of the invention, a coating spraying tool for a sample substrate for in-situ tensile observation of a coating material is provided, the sample substrate comprises a first fixing section, a second fixing section and a connecting section connected between the first fixing section and the second fixing section, the width of the first fixing section is equal to that of the second fixing section and is larger than that of the connecting section, the first fixing section is provided with a first positioning hole, the second fixing section is provided with a second positioning hole, the connecting section is provided with a spraying surface, and the coating spraying tool comprises: the first shielding layer wraps the first fixed section; the second shielding layer wraps the second fixing section; the first fixing pin is inserted into the first positioning hole and penetrates through the first shielding layer; the second fixing pin is inserted into the second positioning hole and penetrates through the second shielding layer; and the clamp is used for clamping the sample matrixes and enabling the spraying surfaces of the sample matrixes to face to the same direction.
The coating spraying tool provided by the embodiment of the invention can spray a coating on a small-sized sample substrate, so that the coating can be observed by a scanning electron microscope, and further, the analysis of the crack initiation and propagation mechanism and the material damage mechanism of a coating material in the stretching process is facilitated.
According to some embodiments of the present invention, the thickness of the first fixing section, the thickness of the second fixing section, and the thickness of the connection section are equal to each other, and the painting surface is formed on an upper surface of the connection section; every first fixed section parcel respectively has first shielding layer, every first fixed pin has been inserted respectively in the first locating hole, every the second fixed section parcel respectively has the second shielding layer, every second locating hole has inserted the second fixed pin respectively in.
Furthermore, two ends of the first shielding layer respectively bypass two side edges of the first fixing section and are arranged at intervals to avoid the first fixing pins; and two ends of the second shielding layer respectively bypass two side edges of the second fixing section and are arranged at intervals to avoid the second fixing pin.
Further, the jig includes: a base plate; first side splint and second side splint, first side splint with second side splint are located respectively the relative both sides of bottom plate are followed, first side splint the second side splint with the bottom plate is injectd jointly and is pressed from both sides the groove, and is a plurality of the second canned paragraph of sample base member is located press from both sides the inslot.
Further, the second side clamping plate has a height higher than that of the first side clamping plate.
According to some embodiments of the present invention, the thickness of the first fixing section is equal to the thickness of the second fixing section and is smaller than the thickness of the connecting section, and the spraying surface is formed on a side surface of the connecting section; the first shielding layer integrally wraps the first fixed sections of the plurality of sample substrates, and the second shielding layer integrally wraps the second fixed sections of the plurality of sample substrates.
Furthermore, two ends of the first shielding layer respectively bypass two outermost fixed sections of the plurality of first fixed sections, and the two ends of the first shielding layer are arranged at intervals to allow at least one first fixed section to pass through; two ends of the second shielding layer respectively bypass two outermost sides of the second fixing sections, and the two ends of the second shielding layer are arranged at intervals to allow at least one second fixing section to pass through.
Further, the coating spraying frock still includes: the first spacing blocks are arranged between the adjacent first fixed sections; and each second spacing block is arranged between the adjacent second fixing sections.
Further, a plurality of the first fixing segments share a first fixing pin and the first fixing pin passes through a plurality of the first spacing blocks; the second fixing segments share one second fixing pin, and the second fixing pin penetrates through the second spacing blocks.
According to some specific examples of the invention, the first and second shielding layers are both iron sheets.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an in-situ stretching observation system for a coating material according to an embodiment of the invention.
FIG. 2 is a schematic structural diagram of a sample substrate of a coating material in-situ tensile observation system according to an embodiment of the invention.
FIG. 3 is a schematic structural diagram of a sample substrate of a coating material in-situ tensile observation system according to another embodiment of the invention.
FIG. 4 is a schematic structural diagram of a sample substrate and a coating spraying tool thereof according to an embodiment of the invention.
Fig. 5 is a schematic structural diagram of a sample substrate and a coating spraying tool thereof according to another embodiment of the invention.
FIG. 6 is a flow chart of a method of coating a sample substrate according to an embodiment of the present invention.
Reference numerals:
a coating material in-situ stretching observation system 1,
The in-situ stretcher 100, a workbench 110, a sliding guide rail 111, an anti-falling groove 112, a first object stage 120, a first clamping plate 121, a first threaded hole 122, a first positioning pin hole 123, a second object stage 130, a second clamping plate 131, a second threaded hole 132, a second positioning pin hole 133, a driver 140, a sliding guide rod 141, a transmission screw 142, a first clamping plate, a second clamping plate, a first clamping plate 120, a second clamping plate 132, a second positioning pin hole 133,
a sample base 200, a first fixing section 210, a first positioning hole 211, a second fixing section 220, a second positioning hole 221, a connecting section 230, a spraying surface 231,
A sample bin 400,
A first shielding layer 510, a second shielding layer 520, a first fixing pin 530, a second fixing pin 540,
A clamp 600, a bottom plate 610, a first side clamping plate 620, a second side clamping plate 630,
A first spacer 710 and a second spacer 720.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more.
In the related technology, mechanical property detection and damage mechanism of a coating material are mostly explored by using a universal tensile testing machine under a macroscopic scale, a high-resolution camera shooting method is usually adopted to observe the tensile cracking process of the coating, and a digital image related method is combined to measure the strain change condition of the front surface of the coating.
Usually, a tensile sample substrate needs to be manufactured, then a coating material to be tested is sprayed on the substrate material, and then speckle is sprayed on the surface of the coating material conventionally, so as to provide an identification point for strain calculation by a subsequent digital image correlation method. After the preparation is finished, a tensile test is carried out on the tensile sample by using a universal tensile testing machine, a high-resolution camera is required to record the tensile process in the experimental process so as to observe the specific process of coating cracking, and photos are continuously taken, so that the strain change condition of the front surface of the coating can be calculated by using a digital image correlation method.
And (3) calculating the change rule of the speckles in the stretching process by using a digital image correlation algorithm to obtain a strain relation. The coating material is mainly divided into 4 stages from tensile load bearing to surface crack cracking:
(1) when the coating just begins to bear tensile load, the strain shows irregular change;
(2) along with the increase of the tensile load, the surface strain of the coating is in an orderly fluctuation state, which is similar to a sine curve, the maximum strain and the minimum strain are respectively a wave crest and a wave trough, and the wave crest and the wave trough continuously move towards the same direction;
(3) when the tensile load reaches a certain stage, the strain of a small part of the coating is increased sharply;
(4) the coating breaks when the strain of the sharply increased coating region reaches a limit, i.e., the stress in the region reaches a tensile limit.
However, since the coating is too thin, this method can only detect the surface strain change and crack propagation of the coating, and cannot observe the change rule of the interface crack at the side surface of the coating and the surface crack propagation to the interface crack.
The commonly adopted method for observing the interface crack and the surface crack propagation to the interface crack is realized by controlling the load gradual change of a universal testing machine. If a plurality of sample matrixes sprayed with coating materials with the same parameters are prepared, the sample matrixes are respectively stretched with gradually increased fixed loads, when the stretching reaches the fixed loads, the stretching is stopped, the samples are taken down, the cross sections of the stretched samples are made into metallographic samples, and the metallographic samples are observed under a scanning electron microscope to determine the crack forms and the crack transformation processes in the stretching process. However, this method cannot reflect the crack propagation process in real time, and the selection of the load range has a certain randomness, so that the rule of the obtained crack along with the change of the tensile load is not continuous, and the accuracy of the crack propagation process may be affected. In addition, in the preparation process of the observation sample, due to the irregular grinding and polishing, cracks can be generated inside the brittle coating, and the accuracy of result observation is influenced.
In view of the current state of the art of observing the tensile test of the coating material, an in-situ tensile observing system 1 of the coating material is provided according to an embodiment of the present invention, and the in-situ tensile observing system 1 of the coating material according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the coating material in-situ stretching observation system 1 according to the embodiment of the present invention includes an in-situ stretcher 100, a specimen substrate 200, a scanning electron microscope, and a computer system (not shown in the drawings).
The sample matrix 200 is provided with a spraying surface of a coating to be measured, the sample matrix 200 is fixed on the in-situ stretcher 100, and the sample matrix 200 and the coating to be measured thereon are stretched when the in-situ stretcher 100 works. The scanning electron microscope is provided with a sample bin 400, the in-situ stretcher 100 is arranged in the sample bin 400, and the scanning electron microscope continuously shoots images or carries out whole-process video recording when the coating to be tested is stretched. The computer system is connected with the scanning electron microscope and the in-situ stretcher 100 respectively, and the strain size of the surface of the coating material and the change process of the strain size can be obtained by processing the pictures by using a digital image correlation method.
According to the coating material in-situ stretching observation system 1 provided by the embodiment of the invention, the in-situ stretcher 100 which can be placed in the sample bin 400 of the scanning electron microscope is arranged, so that the stretching process can be observed by using the scanning electron microscope, the cracking process of the coating can be observed at a micro-nano level, and the specific process of the cracking of the coating, including the crack initiation position, the crack propagation path, the crack propagation speed and the like, can be clearly captured. In addition, the change of the microscopic morphology of the coating material can be observed by utilizing the in-situ observation of a scanning electron microscope under high magnification, which is beneficial to analyzing the cracking mechanism of the coating.
For example, displacement/load signals can be synchronously recorded in the stretching process, so that the mechanical property of the coating material can be analyzed; the change process of the coating material can be recorded under the micro-nano scale, so that the damage mechanism of the coating material in the stretching/compressing process can be inferred; after marking the identification points on the surface to be observed of the coating by using a nanoimprint method, processing an image shot by a scanning electron microscope in a stretching experiment process by using a digital image correlation method, and obtaining the strain magnitude and the local strain change process of the surface of the coating.
Therefore, the coating material in-situ tensile observation system 1 according to the embodiment of the invention can observe the cracking process of the coating material in detail, and is beneficial to analyzing the crack initiation and propagation mechanism and the material damage mechanism of the coating material in the tensile process.
In some embodiments of the present invention, as shown in fig. 1, the in-situ stretcher 100 includes a table 110, a first stage 120, a second stage 130, and a driver 140.
The first stage 120 and the second stage 130 are provided on the table 110, at least one of the first stage 120 and the second stage 130 is movable in a direction away from the other, and one end of the sample base 200 is fixed to the first stage 120 and the other end is fixed to the second stage 130. The actuator 140 is drivingly connected to the at least one of the first stage 120 and the second stage 130, and the first stage 120 and the second stage 130 move relatively away from each other to stretch the sample substrate 200 and thereby stretch the coating material on the sample substrate 200.
Further, the work table 110 is provided with a slide rail 111, and the at least one of the first stage 120 and the second stage 130 is slidably fitted to the slide rail 111 to ensure coaxiality with the work table 110 when the first stage 120 and/or the second stage 130 moves. A slide guide 141 is coupled to the actuator 140, and the at least one of the first stage 120 and the second stage 130 is slidably engaged with the slide guide 141 to ensure coaxiality with the actuator 140 when the first stage 120 and/or the second stage 130 moves.
Wherein, the sliding guide 111 is provided with anti-slip grooves 112 on both side surfaces thereof, and the at least one of the first stage 120 and the second stage 130 is provided with anti-slip ribs fitted in the anti-slip grooves 112, thereby preventing the at least one of the first stage 120 and the second stage 130 from being separated from the sliding guide 111.
In some specific examples of the present invention, the driver 140 is a servo motor having a motor shaft coupled to a drive screw 142 through a coupling, the drive screw 142 being threadedly engaged with the at least one of the first stage 120 and the second stage 130 to convert a rotational motion of the motor shaft into a linear motion of the at least one of the first stage 120 and the second stage 130. For example, the two ends of the transmission screw 142 are respectively provided with threads in opposite directions, and the rotation of the transmission screw 142 drives the first stage 120 and the second stage 130 to respectively move in opposite directions to achieve the stretching function.
In some embodiments of the present invention, as shown in fig. 1, the first stage 120 is provided with a detachable first clamping plate 121, the second stage 130 is provided with a detachable second clamping plate 131, one end of the specimen base 200 is clamped between the first stage 120 and the first clamping plate 121, and the other end of the specimen base 200 is clamped between the second stage 130 and the second clamping plate 131.
Specifically, as shown in fig. 1, the first clamp plate 121 is provided with two first screw holes 122 and two first positioning pin holes 123, for example, the first screw holes 122 are located between the two first screw holes 122, the first clamp plate 121 is detachably mounted to the first stage 120 by a first screw fastener (e.g., a bolt) fitted to the first screw holes 122, the first clamp plate 121 fixes the one end of the sample base 200 by a first positioning pin fitted to the first positioning pin hole 123, and the first positioning pin can be further inserted into the first stage 120.
The second clamping plate 131 is provided with two second threaded holes 132 and two second positioning pin holes 133, for example, the second threaded holes 132 are two and the second positioning pin holes 133 are located between the two second threaded holes 132, the second clamping plate 131 is detachably mounted to the second stage 130 by a second threaded fastener (for example, a bolt) fitted to the second threaded holes 132, and the second clamping plate 131 fixes the other end of the sample base 200 by a second positioning pin fitted to the second positioning pin holes 133, which may be further inserted into the second stage 130.
In some specific examples of the present invention, the stretching rate, the maximum load, the magnification of the scanning electron microscope and the observation range of the in-situ stretcher 100 can be quantitatively adjusted in real time, the stretching rate can be linearly adjusted within the range of 0.036mm/min to 1mm/min, the maximum load capacity can reach 1kN, the maximum stretching range can reach 10mm, and the testing requirements of coating materials with different properties can be met.
In view of the fact that the coating of brittle materials such as ceramics, which have a short elastic deformation stage during the stretching process, has a very rapid breaking behavior, it is difficult to capture the detailed breaking process of the coating material when the test is performed using a large universal tensile tester because the tensile load of the tester is high and the stretching rate is fast.
According to the in-situ stretcher 100 provided by the embodiment of the invention, the adjustable range of the stretching speed is within the range of 0.036mm/min-1mm/min, and the 'delayed' stretching fracture process of the brittle ceramic coating can be realized by adjusting the slow stretching speed, so that the detailed process from slow cracking to breaking and peeling of the coating material can be observed.
In some embodiments of the present invention, as shown in fig. 2 and 3, the sample matrix 200 is divided into two types. One sample substrate 200 is used for observation from the front side of the coating material (as shown in fig. 2), and the other sample substrate 200 is used for observation from the side of the coating (as shown in fig. 3), so that the related information such as the initiation and propagation of cracks and the change of surface strain when the coating is cracked can be obtained in more detail.
Specifically, as shown in fig. 2, the sample base 200 includes a first fixing section 210, a second fixing section 220, and a connecting section 230.
The first and second fixing sections 210 and 220 are provided with first and second positioning holes 211 and 221, respectively, to be fixed to the first and second stages 120 and 130 by first and second positioning pins, respectively. The connection section 230 is connected between the first fixing section 210 and the second fixing section 220.
The width of the first fixing section 210 is equal to the width of the second fixing section 220 and is greater than the width of the connecting section 230, the thickness of the first fixing section 210, the thickness of the second fixing section 220 and the thickness of the connecting section 230 are equal to each other, a spraying surface 231 is formed on the upper surface of the connecting section 230, and the coating is sprayed on the spraying surface 231, so that the front surface of the coating can be observed by a scanning electron microscope conveniently.
As shown in fig. 3, the alternative sample substrate 200 includes a first fixed section 210, a second fixed section 220, and a connecting section 230.
The first and second fixing sections 210 and 220 are provided with first and second positioning holes 211 and 221, respectively, to be fixed to the first and second stages 120 and 130 by first and second positioning pins, respectively. The connection section 230 is connected between the first fixing section 210 and the second fixing section 220.
The width of the first fixing section 210 is equal to the width of the second fixing section 220 and is greater than the width of the connecting section 230, the thickness of the first fixing section 210 is equal to the thickness of the second fixing section 220 and is less than the thickness of the connecting section 230, a spraying surface 231 is formed on the side surface of the connecting section 230, and the coating is sprayed on the spraying surface 231, so that the side surface of the coating can be observed by a scanning electron microscope conveniently.
By designing two sample matrixes 200 with different structures, the change conditions of the front surface and the side surface of the coating material in the stretching process can be effectively observed after spraying, in addition, the front surface and the side surface of the coating can be marked by using a nano-imprinting method before the stretching test by virtue of the high magnification of a scanning electron microscope, and then the pictures shot by the scanning electron microscope are processed by using a digital image correlation method, so that the strain conditions of the front surface and the side surface of the coating can be simultaneously obtained.
The coating spraying tool and the coating spraying method of the sample substrate 200 according to the embodiment of the present invention are described below with reference to the drawings.
As shown in fig. 2 to 5, the sample base 200 includes a first fixing section 210, a second fixing section 220, and a connecting section 230 connected between the first fixing section 210 and the second fixing section 220, wherein the width of the first fixing section 210 is equal to that of the second fixing section 220 and is greater than that of the connecting section 230, the first fixing section 210 is provided with a first positioning hole 211, the second fixing section 220 is provided with a second positioning hole 221, and the connecting section 230 is provided with a spraying surface 231.
The coating spraying tool comprises a first shielding layer 510, a second shielding layer 520, a first fixing pin 530, a second fixing pin 540 and a clamp 600.
The first shielding layer 510 wraps the first fixing segment 210, the second shielding layer 520 wraps the second fixing segment 220, the first fixing pin 530 is inserted into the first positioning hole 211 and penetrates through the first shielding layer 510 to fix the first shielding layer 510 to the first fixing segment 210, and the second fixing pin 540 is inserted into the second positioning hole 221 and penetrates through the second shielding layer 520 to fix the second shielding layer 520 to the second fixing segment 220. The jig 600 is used to simultaneously spray the spray surfaces 231 of the plurality of sample substrates 200 by holding the plurality of sample substrates 200 and orienting the spray surfaces 231 of the plurality of sample substrates 200 in the same direction.
As shown in fig. 6, the coating spraying method of the sample substrate 200 according to the embodiment of the present invention includes the steps of:
the first shielding layer 510 is used for wrapping the first fixing section 210, a first fixing pin 530 is inserted into the first positioning hole 211 to fix the first shielding layer 510, the second shielding layer 520 is used for wrapping the second fixing section 220, and a second fixing pin 540 is inserted into the second positioning hole 221 to fix the second shielding layer 520;
performing sand blasting on the spraying surface 231 of the connecting section 230;
placing a plurality of sand-blasted sample substrates 200 in a fixture 600;
the spray surface 231 is sprayed using a supersonic plasma device.
According to the coating spraying tool and the coating spraying method, the coating can be sprayed on the small-sized sample base body 200, and the coating is shielded by the first shielding layer 510 and the second shielding layer 520 and only exists on the spraying surface 231 of the connecting section 230, but is not sprayed on the first fixing section 210 and the second fixing section 220, so that the interference of the coating on the stretching effect of the connecting section 230 is avoided, the coating can be prevented from entering the first positioning hole 211 and the second positioning hole 221, so that the problem of the matching of the first positioning hole 211 and the first positioning pin as well as the matching of the second positioning hole 221 and the second positioning pin is prevented, and therefore the sprayed sample base body 200 can be observed by a scanning electron microscope, and further the crack initiation and expansion mechanism and the material damage mechanism of the coating material in the stretching process can be analyzed.
The first shielding layer 510 and the second shielding layer 520 are made of iron sheet, so as to have a higher melting point, and avoid the first fixing section 210 and the second fixing section 220 from being lost due to melting under a high-temperature flame flow.
In some embodiments of the present invention, the coating of the sample substrate 200 is performed by cleaning the sample substrate 200, which is provided with the first and second shielding layers 510 and 520 and the first and second fixing pins 530 and 540, before the sand blasting.
Further, the pressure of the blasting process does not exceed 60MPa, thereby preventing the sample base 200 from being bent due to excessive pressure.
In some specific examples of the present invention, after each predetermined number of times of spraying, spraying is performed after a predetermined cooling time, the predetermined number of times being 2, in other words, the sample substrate 200 is prevented from being sprayed continuously a plurality of times, thereby preventing the temperature of the sample substrate 200 from being excessively high.
In some embodiments of the present invention, as shown in fig. 2 and 4, the thickness of the first fixing segment 210, the thickness of the second fixing segment 220, and the thickness of the connection segment 230 are equal to each other, and the spray surface 231 is formed on the upper surface of the connection segment 230.
Each first fixing segment 210 is wrapped by a first shielding layer 510, a first fixing pin 530 is inserted into each first positioning hole 211, each second fixing segment 220 is wrapped by a second shielding layer 520, and a second fixing pin 540 is inserted into each second positioning hole 221. That is, a first shielding layer 510 wraps a first fixing segment 210 and is fixed by a first fixing pin 530, and a second shielding layer 520 wraps a second fixing segment 220 and is fixed by a second fixing pin 540.
Wherein, the both ends of first shielding layer 510 are respectively around the both sides edge of first fixed segment 210, and the both ends interval of first shielding layer 510 sets up in order to dodge first fixed pin 530, and the both ends of second shielding layer 520 are respectively around the both sides edge of second fixed segment 220, and the both ends interval of second shielding layer 520 sets up in order to dodge second fixed pin 540, so be convenient for first shielding layer 510 and second shielding layer 520's parcel and fixed operation.
Further, as shown in fig. 4, in order to perform simultaneous spraying of a plurality of sample substrates 200 to improve spraying efficiency, the jig 600 includes a base plate 610, a first side clamping plate 620, and a second side clamping plate 630.
The first side clamping plate 620 and the second side clamping plate 630 are respectively arranged on two opposite side edges of the bottom plate 610, the height of the second side clamping plate 630 can be higher than that of the first side clamping plate 620, the second side clamping plate 630 and the bottom plate 610 jointly define a clamping groove, the second fixing sections 220 (wrapped by the second shielding layer 520 and matched with the second fixing pins 540) of the plurality of sample matrixes 200 are arranged in the clamping groove, so that the plurality of sample matrixes 200 are fixed, and simultaneous spraying is facilitated, for example, specific spraying parameters can be shown in the following table:
Figure RE-GDA0002085018630000091
in some embodiments of the present invention, as shown in fig. 3 and 5, the first fixing section 210 has a thickness equal to and less than that of the second fixing section 220, and the spraying surface 231 is formed on a side surface of the connecting section 230.
The first barrier 510 integrally surrounds the first mounting section 210 of the plurality of sample matrices 200 and the second barrier 520 integrally surrounds the second mounting section 220 of the plurality of sample matrices 200. That is, the first fixed segments 210 of the plurality of sample matrices 200 are wrapped by the same first masking layer 510, and the second fixed segments 220 of the plurality of sample matrices 200 are wrapped by the same second masking layer 520.
Specifically, two ends of the first shielding layer 510 respectively bypass the outermost two of the plurality of first fixing sections 210, and the two ends of the first shielding layer 510 are disposed at intervals. Two ends of the second shielding layer 520 respectively bypass the outermost two of the plurality of second fixing segments 220, and the two ends of the second shielding layer 520 are spaced apart.
The two ends of the first shielding layer 510 are spaced apart by a distance that at least allows one first fixing section 210 to pass through, i.e., the two ends of the first shielding layer 510 are spaced apart by a distance that is greater than the thickness of one first fixing section 210. The ends of the second masking layer 520 are spaced a distance that allows at least one second fixed segment 220 to pass through, i.e., the ends of the second masking layer 520 are spaced a distance greater than the thickness of one second fixed segment 220.
Preferably, both ends of the first shielding layer 510 only respectively bypass the outermost two of the plurality of first fixing segments 210, and both ends of the second shielding layer 520 only respectively bypass the outermost two of the plurality of second fixing segments 220.
Further, the coating spraying tool for the sample substrate 200 further comprises a plurality of first spacing blocks 710 and a plurality of second spacing blocks 720.
Each of the first spacers 710 is disposed between adjacent first fixed segments 210 to fix a distance between the plurality of first fixed segments 210, and each of the second spacers 720 is disposed between adjacent second fixed segments 220 to fix a distance between the plurality of second fixed segments 220, for example, to make a distance between adjacent connection segments 230 greater than 2mm, thereby preventing coatings on the adjacent connection segments 230 from being adhered.
In order to fix the relative positions of the plurality of sample base bodies 200 and the first and second shielding layers 510, 520, the first and second spacers 710, 720, the first fixing segments 210 share one first fixing pin 530 and the first fixing pin 530 passes through the first spacers 710, the second fixing segments 220 share one second fixing pin 540 and the second fixing pin 540 passes through the second spacers 720. That is, the plurality of sample substrates 200 are fixed by using a first fixing pin 530 and a second fixing pin 540, the first fixing pin 530 passes through the first positioning holes 211 of the plurality of first fixing segments 210 and the plurality of first spacers 710 and the first shielding layer 510, and the second fixing pin 540 passes through the second positioning holes 221 of the plurality of second fixing segments 220 and the plurality of second spacers 720 and the second shielding layer 520.
Therefore, the plurality of sample substrates 200 are wrapped by the first shielding layer 510 and the second shielding layer 520 and fixed by the first fixing pin 530 and the second fixing pin 540, so that the time of assembling a tool is saved, and the spraying efficiency is improved.
The working process of the coating material in-situ stretching observation system 1 according to the embodiment of the present invention is described below by way of example.
For a coating material to be observed, firstly, a sample substrate is selected according to the property of the coating material, then, the coating material to be observed is sprayed on the sample substrate, then, the marking of speckles is carried out on the surface (front surface or side surface) to be observed of the coating by utilizing a nanoimprint technology, positioning holes on the sample substrate are aligned with positioning holes on the first objective table 120 and the second objective table 130, the first clamping plate 121 and the second clamping plate 131 are covered, the first positioning pin and the second positioning pin are inserted, the first threaded fastener and the second threaded fastener are screwed, then, after the in-situ stretcher 100 is subjected to dust removal treatment, the in-situ stretcher 100 is sent into a scanning electron microscope, a chip is arranged on the side surface of the sample bin 400 and is in contact connection with the scanning electron microscope, and the control of the in-. Setting parameters such as stretching speed, stretching load and the like on a computer system, then adjusting a scanning electron microscope to a proper magnification factor, and searching a region to be observed after focusing. Then, the screen video recording function of the scanning electron microscope is started, the stretching experiment can be started to observe, the in-situ stretcher 100 can be suspended at any time in the stretching process, and then the scanning electron microscope is used for high-multiple photographing operation, so that the relevant process pictures of the coating germination and expansion can be obtained.
According to the coating material in-situ tensile observation system 1 provided by the embodiment of the invention, the tensile cracking process of the thin coating material is observed from a microscale by using a scanning electron microscope, and the damage and cracking process of the material under the tensile test condition can be completely shown. And, the slow cracking process of the brittle coating material can be realized by adjusting the stretching rate and the load of the in-situ stretcher 100. In addition, the strain conditions of the front surface and the side surface of the coating can be measured simultaneously, and the tensile test process is recorded at any time or in the whole process by using a scanning electron microscope.
In the description herein, references to the description of "a particular embodiment," "a particular example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. The utility model provides a coating spraying frock for tensile sample base member of observing of coating material normal position, a serial communication port, the sample base member includes first canned paragraph, second canned paragraph and connects first canned paragraph with linkage segment between the second canned paragraph, the width of first canned paragraph with the width of second canned paragraph equals and is greater than the width of linkage segment, first canned paragraph is equipped with first locating hole, the second canned paragraph is equipped with the second locating hole, the linkage segment is equipped with the spraying face, coating spraying frock includes:
the first shielding layer wraps the first fixed section;
the second shielding layer wraps the second fixing section;
the first fixing pin is inserted into the first positioning hole and penetrates through the first shielding layer;
the second fixing pin is inserted into the second positioning hole and penetrates through the second shielding layer;
a jig for holding the plurality of sample substrates and orienting the spray surfaces of the plurality of sample substrates in the same direction;
the first spacing blocks are arranged between the adjacent first fixed sections;
the second spacing blocks are arranged between the adjacent second fixing sections;
the first fixing segments share one first fixing pin, and the first fixing pin penetrates through the first spacing blocks;
the second fixing segments share one second fixing pin, and the second fixing pin penetrates through the second spacing blocks.
2. The coating spraying tool for the sample substrate for in-situ tensile observation of the coating material as claimed in claim 1, wherein the thickness of the first fixing section, the thickness of the second fixing section and the thickness of the connecting section are equal to each other, and the spraying surface is formed on the upper surface of the connecting section;
every first fixed section parcel respectively has first shielding layer, every first fixed pin has been inserted respectively in the first locating hole, every the second fixed section parcel respectively has the second shielding layer, every second locating hole has inserted the second fixed pin respectively in.
3. The coating spraying tool for the sample substrate for in-situ tensile observation of the coating material as claimed in claim 2, wherein two ends of the first shielding layer respectively bypass two side edges of the first fixing section and are arranged at intervals so as to avoid the first fixing pin;
and two ends of the second shielding layer respectively bypass two side edges of the second fixing section and are arranged at intervals to avoid the second fixing pin.
4. The coating spraying tool for the sample substrate for in-situ tensile observation of the coating material as claimed in claim 2, wherein the fixture comprises:
a base plate;
first side splint and second side splint, first side splint with second side splint are located respectively the relative both sides of bottom plate are followed, first side splint the second side splint with the bottom plate is injectd jointly and is pressed from both sides the groove, and is a plurality of the second canned paragraph of sample base member is located press from both sides the inslot.
5. The coating spraying tool for the sample substrate for in-situ tensile observation of the coating material as claimed in claim 4, wherein the height of the second side clamping plate is higher than that of the first side clamping plate.
6. The coating spraying tool for the sample substrate for in-situ tensile observation of the coating material as claimed in claim 1, wherein the thickness of the first fixing section is equal to that of the second fixing section and is smaller than that of the connecting section, and the spraying surface is formed on the side surface of the connecting section;
the first shielding layer integrally wraps the first fixed sections of the plurality of sample substrates, and the second shielding layer integrally wraps the second fixed sections of the plurality of sample substrates.
7. The coating spraying tool for the sample substrate for in-situ tensile observation of the coating material as claimed in claim 6, wherein two ends of the first shielding layer respectively bypass two outermost fixed sections of the plurality of first fixed sections, and the two ends of the first shielding layer are arranged at intervals to allow at least one first fixed section to pass through;
two ends of the second shielding layer respectively bypass two outermost sides of the second fixing sections, and the two ends of the second shielding layer are arranged at intervals to allow at least one second fixing section to pass through.
8. The coating spraying tool for the sample substrate for in-situ tensile observation of the coating material as claimed in any one of claims 1 to 7, wherein the first shielding layer and the second shielding layer are made of iron sheet.
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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192766A (en) * 1962-08-14 1965-07-06 Martin Marietta Corp Multi-specimen testing apparatus
DE1807682A1 (en) * 1968-11-08 1970-05-27 Phoenix Gummiwerke Ag Device for testing rubber-metal spring elements
FR2797052A1 (en) * 1999-07-30 2001-02-02 Metravib Sa METHOD AND INSTALLATION FOR ENSURING THE AUTOMATIC CLAMPING OF A TEST FOR MECHANICAL TESTS
CN101697501A (en) * 2009-10-19 2010-04-21 北京交通大学 Platform for testing radio-frequency wireless energy and signal transmission
CN102225512A (en) * 2011-06-08 2011-10-26 上海电气核电设备有限公司 Tensile test piece processing tool jig
CN104198272A (en) * 2014-08-29 2014-12-10 上海交通大学 3D-TSV (Through Silicon Via) in-situ tension test sample and preparation method thereof
CN105004610A (en) * 2015-09-09 2015-10-28 海安县石油科研仪器有限公司 Device for tensile test of metal material under function of current
CN105223055A (en) * 2015-10-16 2016-01-06 内蒙古工业大学 For the original position stretching sample and preparation method thereof of transmission electron microscope
CN206154710U (en) * 2016-10-12 2017-05-10 福融辉实业(福建)有限公司 BOPP membrane lateral stretching mechanism entry presss from both sides edge domination device
CN206248469U (en) * 2016-12-15 2017-06-13 通标标准技术服务(青岛)有限公司 T-shaped sample stretching tool
CN107894364A (en) * 2018-01-17 2018-04-10 兰州理工大学 A kind of scanning electron microscope home position stretches servicing unit
CN109307629A (en) * 2018-09-30 2019-02-05 合肥高益机电科技有限公司 A kind of electric wire bending survey number machine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192766A (en) * 1962-08-14 1965-07-06 Martin Marietta Corp Multi-specimen testing apparatus
DE1807682A1 (en) * 1968-11-08 1970-05-27 Phoenix Gummiwerke Ag Device for testing rubber-metal spring elements
FR2797052A1 (en) * 1999-07-30 2001-02-02 Metravib Sa METHOD AND INSTALLATION FOR ENSURING THE AUTOMATIC CLAMPING OF A TEST FOR MECHANICAL TESTS
CN101697501A (en) * 2009-10-19 2010-04-21 北京交通大学 Platform for testing radio-frequency wireless energy and signal transmission
CN102225512A (en) * 2011-06-08 2011-10-26 上海电气核电设备有限公司 Tensile test piece processing tool jig
CN104198272A (en) * 2014-08-29 2014-12-10 上海交通大学 3D-TSV (Through Silicon Via) in-situ tension test sample and preparation method thereof
CN105004610A (en) * 2015-09-09 2015-10-28 海安县石油科研仪器有限公司 Device for tensile test of metal material under function of current
CN105223055A (en) * 2015-10-16 2016-01-06 内蒙古工业大学 For the original position stretching sample and preparation method thereof of transmission electron microscope
CN206154710U (en) * 2016-10-12 2017-05-10 福融辉实业(福建)有限公司 BOPP membrane lateral stretching mechanism entry presss from both sides edge domination device
CN206248469U (en) * 2016-12-15 2017-06-13 通标标准技术服务(青岛)有限公司 T-shaped sample stretching tool
CN107894364A (en) * 2018-01-17 2018-04-10 兰州理工大学 A kind of scanning electron microscope home position stretches servicing unit
CN109307629A (en) * 2018-09-30 2019-02-05 合肥高益机电科技有限公司 A kind of electric wire bending survey number machine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Gregory M. Smith等.In-situ observation of strain and cracking in coated laminates by digital image correlation.《Surface & Coatings Technology》.2017,p211-218. *
In-situ observation of strain and cracking in coated laminates by digital image correlation;Gregory M. Smith等;《Surface & Coatings Technology》;20170825;212-213页 *

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