CN201421426Y - Ultra-precision trans-scale in-situ nano-indentation score test system - Google Patents
Ultra-precision trans-scale in-situ nano-indentation score test system Download PDFInfo
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- CN201421426Y CN201421426Y CN2009200932693U CN200920093269U CN201421426Y CN 201421426 Y CN201421426 Y CN 201421426Y CN 2009200932693 U CN2009200932693 U CN 2009200932693U CN 200920093269 U CN200920093269 U CN 200920093269U CN 201421426 Y CN201421426 Y CN 201421426Y
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Abstract
The utility model relates to an ultra-precision trans-scale in-situ nano-indentation score test system integrating driving, loading, detection, micro-nano mechanical property test, ultra-precision score processing and in-situ observation as a whole. The system mainly comprises an objective table, an adjusting mechanism, a precision pressing in driving unit, a detection unit, and a high-resolutiondigital photomicrographic system, wherein, the objective table is precisely positioned along the axis X and the axis Y; the adjusting mechanism and the precision pressing in driving unit are arrangedin the axis Z direction; the detection unit is used for detecting loading and displacing signals; the high-resolution digital photomicrographic system is used for observing and storing material deformation and damage conditions in the test process; all the objective table, the adjusting mechanism, and the precision pressing in driving unit are mounted on a base; the high-resolution digital photomicrographic system is mounted on the objective table; a precision mechanical sensor used for detecting pressure of the pressing in material of a diamond tool head and a sensor I used for detecting theprecision displacement of the objective table in the directions of the axis X and the axis Y are mounted on the objective table; and a sensor II used for detecting the precision displacement of the diamond tool head in the pressing in depth Z direction is mounted on the base through a bracket I.
Description
Technical field
The utility model relates to that a kind of to collect driving, loading, detection, micro/nano level Mechanics Performance Testing, ultraprecise delineation processing and home position observation be the comprehensive accurate experiment test system of high-performance of one, relate in particular to the device of nanometer pressure/scratch experiment, in-situ nano pressure/scratch experiment and micron-nano scale in-situ adamas delineation processing in the Micromechanics performance test of all kinds of test specimens or material, belong to the exact science instrument of light harvesting electromechanical integration.Exact instrument is the foundation stone and the important leverage of scientific and technical innovation and socio-economic development, the utility model is the special test equipment that is used to measure the Micromechanics performance parameter that characterizes all kinds of test specimens or material, and can under the real-time monitoring of high-resolution digital micro imaging system, study test specimen or the mechanical behavior of material under loading, damage mechanism and and loading and material property between the correlativity rule, and problems such as the adamas of the precise grating element that can be used for analyzing and researching delineation processing mechanism and process optimization, to new material new process, precision optics, microelectric technique and semiconductor technology, the carplane key components and parts is made, Ferrous Metallurgy, biomedical engineering, MEMS (micro electro mechanical system) (MEMS) technology, the development of hi-tech industry such as nanometer engineering and defence and military cluster has very important support impetus and wide industry using value.
Background technology
The measuring technology of micro/nano level material mechanical performance mainly comprises nano impress (Nanoindentation), nanometer cut (Nanoscratch), atomic force microscope (AFM), MEMS (micro electro mechanical system) (MEMS) special test technology (as little stretching etc.) and relevant support technology etc.According to whether can being divided into original position (In situ) test and ex situ (Ex situ) test again in the test by instrument on-line real time monitoring distortion of materials and damage status such as electron microscopes.So-called original position (or on the throne) test is meant on-line continuous monitoring and analysis to carrying out in the measured piece Mechanics Performance Testing; Corresponding with it is non-in-situ test (claiming dystopy or displacement test again), is meant to utilize before the experiment or the test specimen after the experiment carries out mechanics property analysis.Most at present nanometer mechanics researchs rest on the ex situ measuring technology.There is limitation in Micro Electro Mechanical System/nano-electromechanical system (MEMS/NEMS) element special test technology range of application; And traditional mechanics performance test means are difficult to reach nanoscale because of its measuring accuracy; As space is limited, the research situation of this two aspect is not done given unnecessary details here.
(1), the support technology in the nanometer dynamic performance test-precision drives and detection technique
The accurate driving of nanoscale (or location) technology and detection technique are the important support technology of modern high-tech field.From the middle and late in last century, occurred utilizing electric causing/magnetostriction materials, marmem, piezoelectric ceramics etc. to realize the accurate research that drives.Because piezoelectric element has the resolution height, do not have electromagnetic interference (EMI), be easy to advantage such as microminaturization, utilize piezoelectric element to realize that the accurate research that drives receives the concern of academia and engineering circle, and multiple piezoelectric actuators such as impact type, Inchworm type, stick-slip formula driving mechanism and micro-displacement work table have been carried out deep research, these achievements in research have represented comparatively wide application prospect in fields such as superfinishing, fine operation, exact instrument, biomedical engineerings.In the detection of nano-deformation, main at present by the realization of means such as optical triangulation method, interferometric method, condenser type detection; And in the detection of tiny load, the researchist mainly utilizes sensitive element that loading force is converted to little distortion of flexible member, and then obtains loading force by deflection or electric capacity (or strain) variable quantity that caused by distortion are detected.
(2), measuring technology such as nano impress, nanometer cut
In ex situ nanometer mechanics measuring technology, the most representative with nano impress, nanometer cut etc.In the nano-indenter test,, the parameters such as hardness, elastic modulus of test specimen can be recorded, distortion and the damage status that material has taken place can be found in conjunction with instruments such as electron microscopes by analyzing loading force, test piece deformation and " load-deflection curve ".On the basis of technology such as nano-hardness tester, produced nanometer cut technology; Be that with the nano impress difference nanometer cut technology has increased precision positioning and the displacement detection function on the cut direction.At present, China does not also possess this class technology with independent intellectual property right.
With regard to ex situ mechanical test technology such as nano impress, nanometer cuts, the people such as A.M.Minor of Univ California-Berkeley and Lao Lunsi-Berkeley National Laboratory have pointed out the deficiency of its existence: owing to can't carry out the high resolving power in-situ monitoring under scanning electron microscope and transmission electron microscope (SEM, TEM), therefore can not study the correlativity rule between distortion, damage status and loading and material property parameter; Professor Wen Shizhu of Tsing-Hua University also points out: at present for material deformation and damage mechanism and and performance parameter between correlativity rule aspect lack deep research, and this to be micro component manufacture and design link presses for.In addition, this quasi-instrument is responsive to factors such as temperature, and the working environment harshness also can't be studied temperature effect to the materials processing Effect on Performance; Equipment price costliness, testing cost height consider that for the commercial application in military and hi-tech added value field high-end instrument and equipment is also to China's offset, embargo abroad.
(3), original position (In situ) nanometer dynamic performance test technology
In the in-situ nano mechanical test research of one-dimensional nano structure and three-dimensional test specimen, obtained some significant achievements in research abroad in recent years, and be subjected to the attention of international project circle and academia, and obtain the subsidy of department of government concerned.
The researchist of U.S.'s Lao Lunsi-Lawrence Livermore (Lawrence Livermore) and two National Laboratories of Lao Lunsi-Berkeley (Lawrence Berkeley) carries out precision positioning by gear motor and piezoelectric element and take the lead in having carried out the in-situ nano impression test under Electronic Speculum under USDOE subsidizes.Be limited to technical merit at that time, this apparatus structure is big, bearing accuracy is not enough; Can only monitor distortion of materials behavior and damage status, can't the test force mathematic(al) parameter; But this research has the meaning of milestone, makes the nanoscale distortion of in-situ monitoring material, damage mechanism problem become possibility.After this, the diamond tool head that the researchist promotes to mix by drive mechanism has been realized the in-situ nano impression test in the Electronic Speculum vacuum chamber, and respectively materials such as monocrystalline silicon are tested, monitored that material deforms and the inner overall process that defective occurs under the indentation load, but their work also comes with some shortcomings: 1. deflection (or displacement) obtains by electron microscopic observation, and 2. loading force is to convert by the relation that is applied to voltage on the piezoelectric element and its deflection to obtain; Thereby cause testing complex, off-line operation link too much, and reduced the confidence level of test result.
People such as the J.Michler of institute of Swiss Confederation (Swiss Federal Institute) are under European framework planning is subsidized, developed the in-situ nano cut test platform that is assembled by a plurality of motion module, this platform adopts drive mechanism based on the stick-slip expulsion mechanism as the precision positioning module; Utilize this platform under Electronic Speculum gallium arsenide etc. to be carried out the test of in-situ nano cut, whole process has been monitored smear metal, the crack distribution situation of material under the effect of taper diamond tool head.But this research also comes with some shortcomings: 1. have backlash (backlash) phenomenon (the backlash amplitude reaches 30-100nm) that can't overcome in the driving mechanism work; 2. load lack of resolution (for 100mN), 3. can't detect tangential cut power.
Under the technical support of UC Berkeley and Lawrence Berkeley National Laboratory, Hysitron company has pushed PI95 type in-situ nano impression instrument to market, this product promotes the diamond tool head by Piexoelectric actuator and is implemented in original position impression test under transmission electron microscope (TEM) monitoring, owing to have the hi-tech added value, this product price is up to 250,000 U.S. dollars (USD), and uses for military project and hi-tech added value field and to consider the offset embargo to China.The above-mentioned work that comprises Hysitron company mainly concentrates in the Mechanics Performance Testing of low-dimensional nano structure (as nanotube, nano thin-film and nanosphere etc.), obtained a series of significant achievements in research, and promoted the unify development of industries such as nanometer technology of microelectric technique, micro-electro-mechanical systems effectively with milestone significance.
In sum, the in-situ nano mechanical test is generally believed it is the effective ways of brand-new, the most potential research material nanoscale mechanical property and damage mechanism by international academic community and engineering circle, is subjected to the great attention of international project circle, academia and department of government concerned in recent years.The commercially produced product of in-situ nano mechanical test only has U.S. Hysitron company to produce at present, and price is very expensive, also China is embargoed; And these in-situ nano mechanical tests are owing to be subjected to the restriction of specific factor or special purpose, the atomic little special test specimen of structure also must be made by complicated loaded down with trivial details technologies such as " mask, burn into depositions ", can't carry out test to the three-dimensional test specimen more than the characteristic dimension millimeter level.Because the factors such as scale effect in the test utilize the comprehensive mechanical property that the test result of atomic small specimen is gone to estimate the three-dimensional test specimen of measurement large-size to lack credible.
The utility model is an object with the precise high-efficiency measuring technology of research material for test Micromechanics performance, damage mechanism, proposition is at the new technology and the new method of the in-situ nano impression/delineation test of three-dimensional test specimen more than the characteristic dimension millimeter level, conduct a research and develop and advance its industrialization, fill up the blank in this field of China rapidly, and occupy one seat at the international level.
Summary of the invention
The purpose of this utility model is to design a kind of collection and drives, load, detect, the micro/nano level Mechanics Performance Testing, ultraprecise delineation processing and home position observation are a kind of super-precision trans-scale in-situ nanometer indentation marking test system, and it is by having X, the objective table of Y-axis precision positioning, the grand moving adjusting mechanism and the precision of Z-direction are pressed into driver element, be used to detect the moving displacement and the X of compression distance Z direction diamond cutter, the precise displacement sensor I 7 of the displacement of Y direction objective table, be used for detecting diamond cutter be pressed into material internal pressure accurate mechanics sensor and be used for observation and storage mechanical test process distortion of materials, the accurate micro imaging system of damage status and digital imaging system are formed.Objective table with X, Y-axis precision positioning can be realized the precision feeding of workpiece on X, Y direction, the grand moving adjusting mechanism of Z-direction can the rapid adjustment diamond cutter and workpiece between the position, precision is pressed into driver element can realize that diamond cutter is pressed into to material internal, and accurate micro imaging system and digital imaging system are used for observation and store mechanical test process distortion of materials, damage status.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of super-precision trans-scale in-situ nanometer indentation marking test system, mainly by having X, the objective table 11 of Y-axis precision positioning, the grand moving adjusting mechanism of Z-direction and precision are pressed into driver element 15 and are used for observation and storage mechanical test process distortion of materials, the accurate micro imaging system of damage status and digital imaging system are formed, described objective table 11, the grand moving adjusting mechanism of Z-direction and precision are pressed into driver element and all are fixed on the base 12, accurate micro imaging system and digital imaging system are contained on the objective table 11, be used to detect diamond cutter be pressed into material internal pressure accurate mechanics sensor 10 and be used to detect X, the precise displacement sensor I 7 of the micro-displacement of Y direction objective table is contained on the objective table 11, and the precise displacement sensor II 23 that is used to detect the moving displacement of compression distance Z direction diamond cutter is installed in base 12 by bracket I 13.
Described objective table 11 is mainly by micropositioner, voice coil motor 25 and accurate rolling guide 8 are formed, described micropositioner is fixed between base 12 and the web joint I 6, voice coil motor 25 and accurate rolling guide 8 are fixed on the web joint I 6, and by two groups of U type groove location on the web joint I 6, voice coil motor 25 drives guide rail slide block 4 by connecting rod 27 and moves along accurate rolling guide 8, accurate mechanics sensor 10 lower ends are installed on the guide rail slide block 4 by excessive element 9, accurate mechanics sensor 10 upper ends are connected with the upper platen of objective table 11, and precise displacement sensor I 7 installs on the web joint I 6 by erecting frame I 5.
Described objective table 11 passes through voice coil motor 25 precision positionings on X-direction, the micro-displacement of objective table on X-direction detects by precise displacement sensor I 7, precise displacement sensor I 7 detected displacement signals carry out closed-loop control as the feedback signal of voice coil motor 25 control power supplys to the scratch experiment process; Objective table carries out the detection of precision positioning and micro-displacement by micrometer leading screw I 1 on Y direction.
The grand moving adjusting mechanism of described Z-direction is made up of a precise jiggle platform and a web joint II 16 who vertically installs, micropositioner base II 18 is fixed on the riser 19, web joint II 16 is fixedlyed connected with micropositioner slide unit II 17, precision is pressed into driver element 15 and is fixedly mounted on the web joint II 16, and Z-direction diamond cutter 32 carries out grand moving adjustment by the micrometer leading screw II20 that adjusts the precise jiggle platform.
Described precision be pressed into driver element 15 mainly by flexible hinge 29, piezoelectricity fold stack driver 30,31, diamond cutter 32, form, flexible hinge 29 is fixedly installed on the web joint II 16 of grand moving adjusting mechanism of Z-direction, and employing monomer multiple degrees of freedom, can realize the precision feeding of diamond cutter 32 on Y-axis and Z axle both direction, two groups of piezoelectricity fold stack drivers 30,31 are housed on the flexible hinge 29, and diamond cutter 32 links together by the cantilever of lock-screw 33 with flexible hinge 29.
Precise displacement sensor II 23 is fixedly mounted on the mount pad 14, be connected by the chute bolt between mount pad 14 and the bracket I 13 and between bracket I 13 and the base 12, and the mutual alignment on Y, Z axle is adjustable.
Described accurate micro imaging system that is used to observe and digital imaging system mainly are made up of powerful enlarging lens 26 and CCD digital imaging system 28, described powerful enlarging lens 26 and CCD digital imaging system 28 are installed on the objective table 11, and be fixed on the riser 19 by erecting frame II24, bracket I II22 and bracket I I21, axle is connected between erecting frame II 24 and the bracket I II22.
Technique effect of the present utility model is: (mensuration that full-size reaches mechanics parameter such as the hardness, elastic modulus of 35mm * 35mm * 8mm) characterizes provides nano-indenter test method more accurately, measuring technology that the utility model proposes or method load deflection resolution to reach nanoscale, loading force resolution reaches little ox level for three-dimensional material for test more than the characteristic dimension millimeter level; By the high-resolution digital micro imaging system distortion of materials damage status in the test is carried out in-situ monitoring, study means of testing more accurately and effectively for the mechanical behavior (or military service behavior) of evaluation analysis material under loading provides, for set up the damage of distortion of materials under the loading and and loading and material property between the correlativity rule technological means is provided; For the nano-diamond delineation processing of complicated optical grating construction etc. provides the method for optimizing processing technology.The utility model patent will play the promotion facilitation to fields such as material science, microelectric technique, precision optics, thin film technique, Ultraprecision Machining and defence and militaries.
Description of drawings
Accompanying drawing 1 is a hybrid-driven nanometer dynamic performance experimental provision main part mechanism map.
Accompanying drawing 2 is the mechanism maps with objective table 11 of X, Y-axis precision positioning.
Accompanying drawing 3 (a) is the installation diagram of voice coil motor 25, accurate rolling guide 8, accurate mechanics sensor 10;
Accompanying drawing 3 (b) is that the A of Fig. 3 (a) is to view;
Accompanying drawing 3 (c) is that the B of Fig. 3 (a) is to view.
Accompanying drawing 4 is mechanism maps of the grand moving adjusting mechanism of Z-direction.
Accompanying drawing 5 is mechanism maps that precision is pressed into driver element 15.
Accompanying drawing 6 is the fitting machine compositions of precise displacement sensor II 23 that are used to detect the moving displacement of compression distance Z direction diamond cutter.
1. micrometer leading screw I, 2. micropositioner base I, 3. micropositioner slide unit I, 4. guide rail slide block, 5. erecting frame I, 6. web joint I, 7. precise displacement sensor I, 8. accurate rolling guide, 9. excessive element, 10. accurate mechanics sensor, 11. objective tables, 12. bases, 13. bracket I, 14. mount pads, 15. precisions are pressed into driver element, 16. web joint II, 17. micropositioner slide unit II, 18. micropositioner base II, 19. riser, 20. micrometer leading screw II, 21. bracket I I, 22. bracket I II, 23. precise displacement sensor II, 24. erecting frame II, 25. voice coil motor, 26. powerful enlarging lens, 27. connecting rods, 28.CCD digital imaging system, 29. flexible hinge, 30,31. piezoelectricity fold stack driver, 32. diamond cutters, 33. lock-screws.
Embodiment
Further specify detailed content of the present utility model and embodiment thereof below in conjunction with the accompanying drawing illustrated embodiment.
The comprehensive precise experiment system of a kind of high-performance of the present utility model, objective table with X, Y-axis precision positioning is horizontally disposed on base, on Y direction, adopt the precise jiggle platform as driving, by the X-axis precision positioning mechanism on the slide unit drive slide unit of micropositioner, micropositioner has bigger load-bearing capacity, operate steadily, be easy to control.The X-axis precision positioning mechanism adopts voice coil motor as driving, adopt precise displacement sensor to detect micrometric displacement,, can realize closed-loop control by the micrometric displacement signal feedback being given the control power supply of voice coil motor, can realize the precision positioning of X-direction, the automaticity height.Accurate mechanics sensor is installed in the below of objective table by being threaded, can detect the pressure that diamond cutter is pressed into material internal in real time.The grand moving adjusting mechanism of Z-direction adopts the little driving of precise jiggle pedestal, is pressed into driver element by the precision on the slide unit drive slide unit of micropositioner, can be by the micrometer screw mandrel rapid adjustment diamond cutter of adjustment micropositioner and the position between workpiece during experiment.The flexible hinge that precision is pressed into driver element adopts the multivariant design philosophy of monomer to design, can realize the precision feeding of diamond cutter on Y-axis and Z axle both direction, precision is pressed into driver element and has also adopted the driving of piezoelectric stack as feeding, has advantages such as resolution height, no electromagnetic interference (EMI), structure be small.Adopted precise displacement sensor to detect the feeding displacement of diamond cutter.By software programming control A/D capture card with the force signal synchronous acquisition of the displacement signal of displacement transducer output and the output of accurate mechanics sensor in computing machine, thereby obtain load---the depth curve of impression experiment.Drive objective table just can be finished test specimen along the X-direction feeding scratch experiment by software programming control voice coil motor.Micrometer leading screw I 1 on the micropositioner of adjusting Y direction just can make test specimen along the Y direction feeding, can mark the multiple tracks cut on test specimen.Accurate micro imaging system and digital imaging system also have been installed on the described experimental provision, have been can be used for distortion of materials, damage status in observation and the storage mechanical test process.
Consult shown in the accompanying drawing 1, be furnished with the objective table of X, Y-axis precision positioning on the base 12 and be used to detect the precise displacement sensor II23 of the moving displacement of compression distance Z direction diamond cutter, riser 19 is provided with the grand moving adjusting mechanism and the accurate accurate micro imaging system and the digital imaging system that is pressed into driver element, is used for observing and storing mechanical test process distortion of materials, damage status of Z-direction.
Accompanying drawing 2 is the mechanism maps with objective table of X, Y-axis precision positioning, web joint I 6 links together by the slide unit 3 that is threaded with micropositioner, consult shown in the accompanying drawing 3, have two groups of U type grooves on the web joint I 6, the location that is used for voice coil motor 25 and accurate rolling guide 8 concerns so that guarantee position between the two.Voice coil motor 25 and accurate rolling guide 8 are by being threaded and web joint I 6 is connected, and voice coil motor 25 drives the slide block 4 of accurate rolling guide by connecting rod 27.Consult shown in the accompanying drawing 3, the upper/lower terminal of accurate mechanics sensor 10 all has the installation screw thread, wherein the lower end is threaded onto on the excessive element 9, and excessively 9 of elements are installed to by being threaded on the slide block 4 of accurate rolling guide, and the upper end screw thread is connected with objective table 11.Erecting frame I 5 also is housed on the web joint I 6, is used to install and measure the precise displacement sensor I 7 of objective table X-direction displacement.
What accompanying drawing 4 was represented is the grand moving adjusting mechanism of Z-direction, micropositioner base II 18 is installed on the riser 19 by being threaded, web joint II 16 is connected with micropositioner slide unit II 17 by being threaded, whole precision is pressed into 15 of driver elements and is installed on the web joint II 16 by being threaded, and can realize the grand moving adjustment of Z direction diamond cutter during experiment by the micrometer leading screw II 20 that adjusts the precise jiggle platform.
Accompanying drawing 5 is mechanism maps that precision is pressed into driver element, flexible hinge 29 is installed to by being threaded on the web joint II 16 of grand moving adjusting mechanism of Z-direction, two groups of piezoelectricity fold stack drivers 30,31 are housed on the flexible hinge, and diamond cutter 32 links together by the cantilever of lock-screw 33 with flexible hinge 29.Flexible hinge 29 has two degree of freedom of Y, Z, and in the experimentation, operating personnel can control the precision feeding of diamond cutter on Y, Z both direction by the power supply of control piezoelectricity fold stack driver.
Accompanying drawing 6 is the fitting machine compositions of precise displacement sensor II23 that are used to detect the moving displacement of compression distance Z direction diamond cutter, precise displacement sensor II 23 is installed on the mount pad 14 by being threaded, mount pad 14 and bracket I 13 are connected by bolt, and bracket I 13 is connected on the base 12 by bolt.Have the twice chute on the bracket I 13, the bolt of connection seat 14 and bracket I 13 can slide along Z-direction in chute, the bolt that connects bracket I 13 and base 12 can slide along Y direction in chute, thereby make precise displacement sensor II23 have two degree of freedom of Y, Z, can conveniently adjust the position of 32 of displacement transducer 23 and diamond cutters, guarantee to collect the displacement signal of diamond cutter 32.
In nano-indenter test, because the contact force between diamond tool head and test specimen is generally milli ox level even lower, each link deflection of mechanical system is very small, and the degree of depth that tool heads is pressed into test specimen can record by the accurate displacement proving installation, represents the compression distance of pressure head here with h; And the contact load P that the diamond tool head imposes on the test specimen surface in the impression process can pick up (or obtain by simple conversion) by micro-force sensor.
According to the relevant knowledge of contact mechanics, the contact stiffness S of test specimen can be expressed as
In conjunction with the correlation theory of Oliver-Pharr, the load at impression test unloading curve top can fit to an exponential function relation with corresponding displacement
P＝α(h-h
f)
m (2)
In the formula: α and m are fitting parameter.
(2) formula is carried out the contact stiffness that differential can obtain test specimen at the maximum load place
S＝αm(h
max-h
f)
m-1 (3)
In addition, the contact stiffness of test specimen also can be provided by following formula
In the formula: A be pressure head this moment with the contact area of test specimen; E
rBe the conversion modulus
In the formula: E
sYoung modulus for test specimen; E
iYoung modulus for the diamond tool head; v
sPoisson ratio for test specimen; v
iPoisson ratio for the diamond tool head.
The micro-hardness of material can be expressed as
In the formula: H is the hardness of measured material; P is applied to load on the material for the diamond tool head; A diamond tool head is pressed into the contact area of material, at rectangular pyramid diamond tool head
At triangular pyramid diamond tool head
Wherein h is the contact degree of depth, α is the central axis of diamond tool head and the angle of its faceted pebble. combine above-mentioned theory, the indentation curves and the related data that record by nano indentation test, the performance parameter such as hardness, elastic modulus of measured material test specimen can be calculated, and characteristics such as its creep can be investigated.
Claims (8)
1, a kind of super-precision trans-scale in-situ nanometer indentation marking test system, it is characterized in that, mainly by having X, the objective table of Y-axis precision positioning (11), the grand moving adjusting mechanism of Z-direction, precision is pressed into driver element (15), be used for observation and storage mechanical test process distortion of materials, the accurate micro imaging system of damage status and digital imaging system are formed, described objective table (11), the grand moving adjusting mechanism of Z-direction and precision are pressed into driver element and all are fixed on the base (12), accurate micro imaging system and digital imaging system are contained on the objective table (11), be used to detect diamond cutter be pressed into material internal pressure accurate mechanics sensor (10) and be used to detect X, the precise displacement sensor I (7) of the micro-displacement of Y direction objective table is contained on the objective table (11), and the precise displacement sensor II (23) that is used to detect the moving displacement of compression distance Z direction diamond cutter is installed in base (12) by bracket I (13).
2, a kind of super-precision trans-scale in-situ nanometer indentation marking test system according to claim 1, it is characterized in that, described objective table (11) is mainly by micropositioner, voice coil motor (25) and accurate rolling guide (8) are formed, described micropositioner is fixed between base (12) and the web joint I (6), voice coil motor (25) and accurate rolling guide (8) are fixed on the web joint I (6), and by two groups of U type groove location on the web joint I (6), voice coil motor (25) drives guide rail slide block (4) by connecting rod (27) and moves along accurate rolling guide (8), accurate mechanics sensor (10) lower end is installed on the guide rail slide block (4) by excessive element (9), accurate mechanics sensor (10) upper end is connected with the upper platen of objective table (11), and precise displacement sensor I (7) is installed on the web joint I (6) by erecting frame I (5).
3, a kind of super-precision trans-scale in-situ nanometer indentation marking test system according to claim 1 and 2, it is characterized in that, described objective table (11) passes through voice coil motor (25) precision positioning on X-direction, the micro-displacement of objective table on X-direction detects by precise displacement sensor I (7), the detected displacement signal of precise displacement sensor I (7) carries out closed-loop control as the feedback signal of voice coil motor (25) control power supply to the scratch experiment process; Objective table carries out the detection of precision positioning and micro-displacement by micrometer leading screw I (1) on Y direction.
4, a kind of super-precision trans-scale in-situ nanometer impression according to claim 1 and 2/delineation test macro, it is characterized in that, accurate mechanics sensor (10) is housed below the described objective table (11), detect the pressure that diamond cutter (32) is pressed into material internal in good time, and, form closed-loop control with the feedback signal of detected force signal as piezoelectricity fold stack driver (31) power supply.
5, a kind of super-precision trans-scale in-situ nanometer indentation marking test system according to claim 1, it is characterized in that, the grand moving adjusting mechanism of described Z-direction is made up of a precise jiggle platform and a web joint II (16) who vertically installs, micropositioner base II (18) is fixed on the riser (19), web joint II (16) is fixedlyed connected with micropositioner slide unit II (17), precision is pressed into driver element (15) and is fixedly mounted on the web joint II (16), and Z-direction diamond cutter (32) carries out grand moving adjustment by the micrometer leading screw II (20) that adjusts the precise jiggle platform.
6, a kind of according to claim 1 or 5 super-precision trans-scale in-situ nanometer indentation marking test system, it is characterized in that, described precision is pressed into driver element (15) mainly by flexible hinge (29), piezoelectricity fold stack driver (30,31), diamond cutter (32), form, flexible hinge (29) is fixedly installed on the web joint II (16) of grand moving adjusting mechanism of Z-direction, and employing monomer multiple degrees of freedom, can realize the precision feeding of diamond cutter (32) on Y-axis and Z axle both direction, two groups of piezoelectricity fold stack drivers (30 are housed on the flexible hinge (29), 31), diamond cutter (32) links together by the cantilever of lock-screw (33) with flexible hinge (29).
7, a kind of super-precision trans-scale in-situ nanometer indentation marking test system according to claim 1, its feature is being used for, precise displacement sensor II (23) is fixedly mounted on the mount pad (14), be connected by the chute bolt between mount pad (14) and the bracket I (13) and between bracket I (13) and the base (12), and the mutual alignment on Y, Z axle is adjustable.
8, a kind of super-precision trans-scale in-situ nanometer indentation marking test system according to claim 1, it is characterized in that, described accurate micro imaging system that is used to observe and digital imaging system mainly are made up of powerful enlarging lens (26) and CCD digital imaging system (28), described powerful enlarging lens (26) and CCD digital imaging system (28) are installed on the objective table (11), and by erecting frame II (24), bracket I II (22) and bracket I I (21) are fixed on the riser (19), are connected by axle between erecting frame II (24) and the bracket I II (22).Under the high resolving power micro imaging system, can realize mechanical behavior and damage status that material under the loading in nano impress/delineation process takes place are implemented dynamic in-situ monitoring.
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| CN (1) | CN201421426Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323170A (en) * | 2011-06-16 | 2012-01-18 | 中国地质大学（北京） | A kind of method of testing of ultrahard diamond thin film mechanical performance |
| CN102374953A (en) * | 2010-08-20 | 2012-03-14 | 中国科学院金属研究所 | Indentation device for testing load-displacement curve of material |
| CN106370517A (en) * | 2016-10-24 | 2017-02-01 | 浙江工业大学 | Portable pressure testing system having in situ observation and continuously testing functions |
| CN106840929A (en) * | 2017-01-11 | 2017-06-13 | 西安理工大学 | A kind of micro-nano scratching instrument and its application process |
| CN110788874A (en) * | 2019-10-21 | 2020-02-14 | 中国美术学院 | Manipulator for controlling clamping force to measure distance between clamping points |
| CN113790988A (en) * | 2021-10-20 | 2021-12-14 | 天津大学 | Macro-micro coupling trochoid micro-nano scratch experiment machine based on flexible mechanism |
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2009
- 2009-03-27 CN CN2009200932693U patent/CN201421426Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374953A (en) * | 2010-08-20 | 2012-03-14 | 中国科学院金属研究所 | Indentation device for testing load-displacement curve of material |
| CN102323170A (en) * | 2011-06-16 | 2012-01-18 | 中国地质大学（北京） | A kind of method of testing of ultrahard diamond thin film mechanical performance |
| CN102323170B (en) * | 2011-06-16 | 2013-09-11 | 中国地质大学（北京） | Method for testing mechanical property of superhard diamond film |
| CN106370517A (en) * | 2016-10-24 | 2017-02-01 | 浙江工业大学 | Portable pressure testing system having in situ observation and continuously testing functions |
| CN106840929A (en) * | 2017-01-11 | 2017-06-13 | 西安理工大学 | A kind of micro-nano scratching instrument and its application process |
| CN106840929B (en) * | 2017-01-11 | 2019-08-16 | 西安理工大学 | A kind of micro-nano scratching instrument and its application method |
| CN110788874A (en) * | 2019-10-21 | 2020-02-14 | 中国美术学院 | Manipulator for controlling clamping force to measure distance between clamping points |
| CN113790988A (en) * | 2021-10-20 | 2021-12-14 | 天津大学 | Macro-micro coupling trochoid micro-nano scratch experiment machine based on flexible mechanism |
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