CN108646004A - A kind of the temperature control experiments device and test method of photoelectric ceramics - Google Patents
A kind of the temperature control experiments device and test method of photoelectric ceramics Download PDFInfo
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- CN108646004A CN108646004A CN201810268920.XA CN201810268920A CN108646004A CN 108646004 A CN108646004 A CN 108646004A CN 201810268920 A CN201810268920 A CN 201810268920A CN 108646004 A CN108646004 A CN 108646004A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/388—Ceramics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
Abstract
The present invention relates to a kind of temperature control device of photoelectric ceramics and test method, the temperature control experiments device includes shock insulation platform, transparent temperature control cover and cfentrifugal blower；The temperature that the method can efficiently control photo-induced telescopic driver increases, and effectively controls influence of the hysteresis phenomenon to PLZT performance tests between flexural deformation and photovoltage, improves the driveability of photo-induced telescopic driver.
Description
Technical field
The invention belongs to photo-induced telescopic Material Fields, and in particular to a kind of photoelectric ceramics temperature control experiments device and performance
Test method.
Background technology
PLZT ceramics PLZT photoelectric materials have unusual photovoltaic effect, while being also the one of piezoelectric ceramics
Kind, there is inverse piezoelectric effect, under unusual photovoltaic effect and inverse piezoelectric effect collective effect, it may occur that photo-induced telescopic is imitated
It answers.0-3 polarizes PLZT ferroelectric ceramics as a kind of photo-induced telescopic material, under the ultraviolet light of specific wavelength, due to abnormality
Photovoltaic effect, quite high non-uniform Distribution electric field can be generated along thickness direction, generated under inverse piezoelectric effect effect
Heterogeneous strain is so as to cause flexural deformation.Since PLZT ceramics have important application, lot of domestic and international as photic driver
Scholar furthers investigate PLZT ceramics photo-induced telescopic characteristics and its constitutive equation, and practical application achieve it is prodigious at
Fruit.Uchino, Fukuda, Morikawa and Poosanaas et al. have carried out depth to twin-wafer type photo-induced telescopic driver respectively
Enter research, and effective application has been carried out to it.Double wafer structure is made of the opposite PLZT ceramics of two pieces of polarization directions, public
With a pair of of public electrode, when high energy UV is irradiated on driver, the PLZT ceramics of light-receiving surface generate and polarization direction phase
Same voltage, due to photostrictive effectt, the potsherd of this side will extend, and the voltage of the ceramics generation of shady face and polarization
Direction is on the contrary, this side can shorten, to be that entire double wafer structure occurs bending and deformation.Uchino et al. was in 1987, profit
With a kind of optical relay of the Structural Feature Designs of PLZT twin lamellas, when illumination is to PLZT twin lamellas, relay is on
State, when illumination is to PLZT single side potsherds, relay disconnects, 1989 he have also been devised it is a kind of photic by twin lamella
The miniature walking device of telescopic driver driving；Fukuda et al. proposes a kind of concept of light-operated micro-clamp, PLZT ceramics not by
Electromagnetic interference has great application prospect in medical domains such as microsurgeries；Poosanaas et al. was based in 2000
Voltage source model explains unusual photovoltaic effect, in the case where considering second nonlinear susceptibility, calculates
The relationship of photoproduction electric field strength, density of photocurrent and intensity of illumination, and proposed a kind of " sunflower " using photostrictive effectt
Device, this device load onto two photo-induced telescopic drivers respectively in the both sides of solar panels, when sunlight oblique illumination, can make
At both sides unequal power distribution, when direct sunlight, stress equilibrium, such solar panels can be rotated with sunlight, can maximum journey
Degree plays the effect of solar panels, such as figure PLZT ceramic drivings due to not needing conducting wire connection so as to avoid external electromagnetic field
The disturbance of unfavorable factor can realize long-range non-contact control, wireless energy transfer, with important researching value and widely
Future in engineering applications.With the rapid development of science and technology, the control of intelligence structure shape is in aerospace, accurate control and measures
Equal fields are widely used.Compared to traditional piezoelectric actuator, PLZT photoelectric ceramics driver have simultaneously ferroelectricity, pyroelectricity,
The characteristic of piezoelectric material can generate very high photovoltage under the irradiation of certain light intensity between upper/lower electrode, luminous energy is converted
For electric energy, wireless transmission energy is carried out, and do not influenced by unfavorable factors such as electromagnetic noises, can had wide to its remote control
Wealthy application prospect.Experimental study shows that existing hysteresis phenomenon and light stop the stage between PLZT photovoltages and photo-deformable
The very big negative voltage occurred is all related with the temperature raising of PLZT, but few researchs at present are related to the temperature control of PLZT.
Invention content
In order to overcome the shortage of prior art, it is proposed that a kind of temperature control experiments device of photoelectric ceramics and performance test side
Method, the test method are tested using a temperature control experiments device, and the method can efficiently control photo-induced telescopic
The temperature of driver increases, and improves the driveability of photo-induced telescopic driver.
Technical solution of the present invention is：A kind of temperature control experiment test method of photoelectric ceramics, the method utilize a kind of photoelectricity
Ceramics temperature control experiments device tested, the temperature control experiments device include shock insulation platform, transparent temperature control cover and
Blowing device；The transparent temperature control cover is the cuboid box-structure made of transparent material, is set there are one air intake, cloth
It sets on the shock insulation platform, is equipped with a circular hole in the positive front upper of the transparent temperature control cover, the blowing device is mounted on
At the circular hole；It is not closed behind the transparent temperature control cover, to ensure that air flows；It is equipped in the transparent temperature control cover
PLZT ceramic test pieces, ultraviolet source probe, non-contact displacement transducer probe, infrared radiation thermometer probe and clamp structure；
The shock insulation platform is equipped with ultraviolet source controller, non-contact displacement transducer console, infrared measurement of temperature needed for test
Instrument controller, computer and silver conducting wire；PLZT ceramic test pieces one end is fixed, and one end is free, fixing end upper layer and lower layer
Transparent acrylic board clamping；The PLZT ceramic test pieces are coated respectively with conductive silver glue at two end electrodes along its length, to
The silver conducting wire is connected, the conducting wire other end is free, and the connection of this end measures the instrument of the data such as photovoltage and photogenerated current；
The ultraviolet source Probe arrangement is fixed on right over PLZT ceramic test pieces on a holder, by conducting wire with it is described ultraviolet
Light source controller is connected, and ultraviolet source probe can emit 365nm ultraviolet lights under the control of ultraviolet source controller；It is described non-
Tangent displacement sensor probe is arranged in the front of photoelectric ceramics, the output displacement for measuring photoelectric ceramics free end,
Non-contact displacement transducer probe is passed data to by data line on non-contact displacement transducer console；It is described non-
Tangent displacement sensor console is connected with computer, and measured value imports computer by a NI data collecting card and is used in combination
Labview softwares are acquired；For the infrared radiation thermometer probe placement near PLZT potsherds, data measured passes through computer
Special-purpose software acquisition；The silver conducting wire, data line can be realized and visit by being exported at the air intake of the transparent temperature control cover
The connection of head and controller.The PLZT ceramic test pieces performance test mainly includes the following steps：Step 1：On computers
Sample frequency and time are set；Step 2：The power and violet source irradiation for adjusting the ultraviolet source are popped one's head in and ceramics
The distance of piece is adjusted, and is demarcated to intensity of illumination using ultraviolet light illumination photometer；Step 3：By the work side of high resistant electrometer
Formula is set as ' voltage ' measurement；Step 4：Open ultraviolet source controller, high resistant electrometer, infrared radiation thermometer, contactless
The power switch of displacement sensor console, blowing device, computer start recording experimental data；Step 5：Setting to be done
After time test, ultraviolet source controller, high resistant electrometer, infrared radiation thermometer, non-contact displacement transducer control are closed
The power switch of platform, blowing device；Step 6：The working method of high resistant electrometer is set as ' electric current ' to measure；Step 7：
It repeats Step 4: five complete all tests.
Advantageous effect：
The temperature that the present invention can efficiently control photo-induced telescopic driver using temperature control experiments device increases, and improves photic
The driveability of telescopic driver.
Description of the drawings
Fig. 1 is temperature control experiments structure drawing of device of the present invention.
Specific implementation mode
The present invention relates to a kind of temperature control experiment test method of photoelectric ceramics, the method utilizes a kind of temperature of photoelectric ceramics
Degree control experimental provision is tested.
The unusual photovoltaic effect of PLZT ceramics is happened on the spontaneous polarization direction of ferroelectric material, manufactured PLZT potteries
Porcelain spontaneous polarization is unordered, and macroscopic view is nonpolarity.According to the difference of polarization direction, can be divided into according to the polarized 0-1 polarization PLZT of length
It is ceramic and ceramic by the polarized 0-3 polarization PLZT of thickness direction.The electrode of 0-1 polarization PLZT ceramics is located at two along its length
At side, when ceramic surface is by ultraviolet light, since unusual photovoltaic effect will generate one along polarization direction
Uniform light sends a telegraph field, this electric field can cause photoinduced strain to make potsherd extend；0-3 polarize PLZT ceramic surfaces by
When to ultraviolet light, it will generate an inhomogeneous field along thickness change, this electric field can cause edge in length direction
The photoinduced strain of thickness change, thus will produce moment of flexure, cause the polarized PLZT ceramics of 0-3 to bend, 0-3 is polarized
PLZT ceramic electrodes are light-receiving surfaces, and metal electrode can be used different from the polarized electrodes of 0-1（Such as copper electrode）, the polarized electrodes of 0-3
Must be transparent electrode, the upper and lower surface injection tin indium oxide in potsherd can be used in this transparent electrode（ITO）It prepares.
PLZT ceramic materials have ferroelectricity, the characteristic of pyroelectricity, piezoelectric material simultaneously, can be upper under the irradiation of certain light intensity
Very high photovoltage is generated between lower electrode, and PLZT ceramics is made to occur bending and deformation.The temperature control experiments device energy
Experiment measures surface temperature, photovoltage, photogenerated current and the end displacement and amount of deflection of PLZT ceramics, studies them at any time
Variation tendency and influence factor；Germicidal efficacy has arrived the hysteresis phenomenon between photovoltage and photo-deformable, and light stops stage appearance
Phenomena such as prodigious negative voltage, negative current and back-flexing, and carry out reasonable dismissal for these phenomenon Binding experiment data；Energy
Experiment measures repeatedly the influence factor that photoproduction-light stops the Photo induced activity of PLZT ceramics and the Photo induced activity to PLZT ceramics.
The temperature control experiments device includes shock insulation platform, transparent temperature control cover and blowing device, is adopted in the present embodiment
Volume blowing device is air blower；The transparent temperature control cover is the cuboid box-structure made of transparent material, is equipped with
One air intake is arranged on the shock insulation platform, and a circular hole is equipped in the positive front upper of the transparent temperature control cover, described
Cfentrifugal blower is mounted at the circular hole；It is not closed behind the transparent temperature control cover, to ensure that air flows；Described
PLZT ceramic test pieces, ultraviolet source probe, non-contact displacement transducer probe, infrared radiation thermometer is equipped in transparent temperature control cover to visit
Head and clamp structure；Ultraviolet source controller, non-contact displacement transducer needed for test are equipped on the shock insulation platform
Console, infrared radiation thermometer controller, computer and silver conducting wire；PLZT ceramic test pieces one end is fixed, and one end is free, Gu
The transparent acrylic board clamping of fixed end upper layer and lower layer；The PLZT ceramic test pieces are coated respectively at two end electrodes along its length
Conductive silver glue, to connect the silver conducting wire, the conducting wire other end is free, and the connection of this end measures photovoltage and photogenerated current
Etc. data instrument；The ultraviolet source Probe arrangement is fixed on a holder, right over PLZT ceramic test pieces by leading
Line is connected with the ultraviolet source controller, and ultraviolet source probe can emit 365nm purples under the control of ultraviolet source controller
Outer light；The non-contact displacement transducer probe is arranged in the front of photoelectric ceramics, for measuring photoelectric ceramics free end
Output displacement, non-contact displacement transducer probe by data line passes data to non-contact displacement transducer control
On platform；The non-contact displacement transducer console is connected with computer, and measured value is imported by a NI data collecting card
Computer is simultaneously acquired with Labview softwares；The infrared radiation thermometer probe placement is near PLZT potsherds, data measured
It is acquired by the special-purpose software of computer；The silver conducting wire, data line can be at the air intakes by the transparent temperature control cover
The connection of probe and controller is realized in export.
The PLZT ceramic compositions that the present invention uses is PLZT (3/52/48）, burnt using conventional oxide solid phase method and hot pressing
It ties technique and prepares PLZT ceramics, it is specific as follows：The raw materials such as PbO, ZrO2, TiO2 and La2O3 are mixed in specific proportions, by ball
The processes hot pressed sintering such as mill, dry, sieving forms.Manufactured PLZT ceramics are by sanding and polishing and cut into required ruler
Very little, sample dimensions of the invention are 15x3x1mm, and transparent ITO electrode, PLZT ceramics are then plated in potsherd upper and lower surface
Test specimen polarizes in electric heating constant temperature oil bath case, and poling temperature is less than Curie temperature（≈300℃）, it is subject in 120 DEG C of silicone oil
The voltage polarizing of 1800V/mm 20 minutes.The PLZT ceramic test pieces performance test mainly includes the following steps：Step 1：
Sample frequency and time are set on computer；Step 2：The power and violet source irradiation for adjusting the ultraviolet source are visited
Head is adjusted at a distance from potsherd, is demarcated to intensity of illumination using ultraviolet light illumination photometer；Step 3：By high resistant electrometer
Working method be set as ' voltage ' measurement；Step 4：Open ultraviolet source controller, high resistant electrometer, infrared radiation thermometer,
The power switch of non-contact displacement transducer console, cfentrifugal blower, computer start recording experimental data；Step
Five：After setting time test to be done, ultraviolet source controller, high resistant electrometer, infrared radiation thermometer, contactless position are closed
The power switch of displacement sensor console, cfentrifugal blower；Step 6：The working method of high resistant electrometer is set as
' electric current ' measures；Step 7：It repeats Step 4: five complete all tests.
When experimental implementation, the polarized PLZT ceramic test pieces of 0-3 are along the directions 0-1（That is length direction, perpendicular to polarization direction）
It places, one end is clamped, and one end is free, then PLZT ceramics are equivalent to cantilever beam.The PLZT test specimens that upper and lower surface is coated with ITO electrode are logical
Conductive silver glue is crossed to connect with conductive silver wire.When PLZT ceramic test pieces surface is vertically shone by the parallel ultraviolet that wavelength is 365nm
When penetrating, PLZT ceramic surface temperature changes are measured and acquire, the photovoltage between upper/lower electrode and photogenerated current and PLZT
The amount of deflection and axial displacement of ceramic end portion.
Before above-mentioned physical quantity, the UV Light intensity for being irradiated to PLZT ceramic surfaces is adjusted and
Calibration, intensity of illumination can be adjusted at a distance from potsherd by the power and light source irradiation probe for adjusting ultraviolet source, be adopted
It is demarcated with ultraviolet light illumination photometer (TY10ST-80C).The irradiation head of ultraviolet source is 40x40mm, it is ensured that ultraviolet luminous energy is uniformly put down
Row is irradiated to potsherd surface, and in this experiment, potsherd is fixed on a distance from irradiation probe 2cm, passes through light source control
Device adjusts output power and ultraviolet light time and is stopped by the foot-operated control photoproduction light that opens the light.PLZT ceramic surface temperature becomes
Change and measured by the infrared radiation thermometer of German Ou Pushi companies, temperature measurement range is -20~350 DEG C, and measurement accuracy is ± 1.5%；
Photovoltage and photogenerated current between upper/lower electrode by the Keithley 6517B types electrometers of Keithley company of the U.S. into
Row measures, and the measurement range of electric current is<1fA（Including noise）~20mA .The measurement range of voltage is 10 μ V（It may contain and make an uproar
Sound）~200V ；The LK-GD500 type laser displacements that the amount of deflection and axial displacement of PLZT ceramic end portions pass through Japanese Keyemce company
Sensor measures, and measurement range is -14mm ~ 14mm, resolution ratio 0.1um, the number that measured value passes through NI companies of the U.S.
It is acquired according to capture card.All laboratory apparatus are both placed on damped platform and fix.
The conductive silver wire drawn from electrode (silver conducting wire) and three coaxial input cable of 237-ALG-2 types low noise are connected
It connects, the data of measurement import computer by RS-232 connecting lines and by software collection, tip deflection will pass through LK-GD500
Type laser displacement sensor measures, and measured value imports computer by NI data collecting cards and carried out with Labview softwares
Acquisition, the sampling period is set as 1s, and acquires 3000s.
In the entire experiment process, the polarized PLZT ceramic test pieces of 0-3 are respectively 50,100,150 by intensity of illumination
And 200mW/cm2Ultraviolet light 300s, light source closing after using computer respectively to different illumination intensity under it is photic
Characteristic continues to acquire 1500s.
（1）Temperature
The polarized PLZT ceramic test pieces surface temperatures of 0-3 are measured by infrared radiation thermometer, and infrared radiation thermometer probe placement is in PLZT
Near potsherd, data measured is acquired by the special-purpose software of computer, and the sampling period is set as 0.5s.
（2）Photovoltage and photogenerated current
The photovoltage at 0-3 polarized PLZT ceramic electrodes both ends is quiet by Keithley 6517B types with photogenerated current
Electricity meter measures, and the conductive silver wire drawn from electrode is connect with three coaxial input cable of 237-ALG-2 types low noise, surveys
The data of amount import computer by RS-232 connecting lines and by software collection, electrometer can only measure a telecommunications every time
Number, so photovoltage cannot measure simultaneously with photogenerated current, it is necessary to be measured at twice under similarity condition.
（3）Photo-deformable
The tip deflection of PLZT ceramic test pieces is since unusual photovoltaic effect produces the non-homogeneous of through-thickness variation
Caused by electric field and inverse piezoelectric effect collective effect.Tip deflection will be surveyed by LK-GD500 type laser displacement sensors
Amount, measured value import computer by NI data collecting cards and are acquired with Labview softwares, and the sampling period is set as 1s,
And acquire 3000s.
The temperature that the present invention can efficiently control photo-induced telescopic driver using temperature control experiments device increases, and improves
The driveability of photo-induced telescopic driver, the temperature control experiments device can test the surface temperature for measuring PLZT ceramics, light
Raw voltage, photogenerated current and end displacement and amount of deflection study them and change with time trend and influence factor.
Claims (6)
1. a kind of temperature control experiments device of photoelectric ceramics, which is characterized in that the temperature control experiments device includes shock insulation
Platform, transparent temperature control cover, cfentrifugal blower, PLZT photoelectricity test specimen, ultraviolet source, temperature sensor, displacement sensor, electrostatic
Meter and computer；Wherein, the transparent temperature control cover is open box-structure, and the PLZT photoelectricity test specimen is arranged in transparent temperature control
In cover, and the transparent temperature control cover inner air flow is kept by cfentrifugal blower；
The ultraviolet source towards transparent temperature control cover and is positioned over its open side, entire transparent temperature control cover and its internal unit are put
It is placed on the shock insulation platform；
In the inside and outside temperature that contactless sensing probe acquisition is respectively adopted and is tested PLZT photoelectricity test specimens of the transparent temperature control cover
Degree, displacement and electric current, information of voltage, and it is sent to computer.
2. a kind of temperature control experiments device of photoelectric ceramics according to claim 1, which is characterized in that described transparent
The one side top of temperature control cover is equipped with a circular hole, and the cfentrifugal blower is mounted at the circular hole；In the transparent temperature control
PLZT photoelectricity test specimen, ultraviolet source probe, non-contact displacement transducer probe, temperature sensor, that is, infrared measurement of temperature are equipped in cover
Instrument and clamp structure for fixing each probe；
Described PLZT photoelectricity test specimen one end is fixed on shock insulation platform, and conductive silver is coated at two electrode of PLZT photoelectricity test specimen
Glue, to connect silver conducting wire, the connection of the conducting wire other end measures the instrument of the data such as photovoltage and photogenerated current；
The ultraviolet source probe is mounted on by its clamp structure in front of PLZT photoelectricity test specimen, pass through conducting wire and ultraviolet source
Controller is connected；
The infrared radiation thermometer, which is fixed, to be mounted on by magnet base on shock insulation platform, is placed near PLZT photoelectricity test specimens.
3. a kind of temperature control experiments device of photoelectric ceramics according to claim 2, which is characterized in that described non-contact
Formula displacement sensor probe is arranged in the front of PLZT photoelectricity test specimens, the output displacement for measuring photoelectric ceramics free end；
Non-contact displacement transducer probe is passed data to by data line on non-contact displacement transducer console, and displacement is surveyed
Magnitude is acquired by data collecting card and imports computer.
4. a kind of temperature control experiments device of photoelectric ceramics according to claim 3, which is characterized in that in the shock insulation
Platform be equipped with test needed for ultraviolet source controller, non-contact displacement transducer console, infrared radiation thermometer controller,
Computer and silver conducting wire；Each control device distinguishes corresponding detection device and is connected, and is connected with the computer.
5. a kind of temperature control experiments test method of photoelectric ceramics, which is characterized in that the test method includes the following steps：
Step 1：Sample frequency and time are set on computers；
Step 2：The power and violet source irradiation for adjusting ultraviolet source are popped one's head at a distance from potsherd, using ultraviolet light illumination
Meter demarcates intensity of illumination；
Step 3：The working method of electrometer is set as ' voltage ' to measure；
Step 4：Open ultraviolet source controller, electrometer, infrared radiation thermometer, non-contact displacement transducer console, centrifugation
The power switch of formula air blower, computer start recording experimental data；
Step 5：After setting time to be done test, ultraviolet source controller, high resistant electrometer, infrared radiation thermometer, non-is closed
The power switch of tangent displacement sensor console, cfentrifugal blower；
Step 6：The working method of electrometer is set as ' electric current ' to measure；
Step 7：It repeats Step 4: five complete all tests.
6. a kind of temperature control experiments test method of photoelectric ceramics according to claim 5, it is characterised in that：It is described non-
Tangent displacement sensor console is connected with computer, and measured value imports computer by NI data collecting cards and is acquired；
The infrared radiation thermometer probe placement near PLZT photoelectricity test specimens polarization PLZT potsherds, by computer adopted by data measured
Collection；It is exported at the air intake that the silver conducting wire, data line pass through the transparent temperature control cover, realizes the company of probe and controller
It connects.
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| CN110425430A (en) * | 2019-06-30 | 2019-11-08 | 天津大学 | A kind of mangneto tribo-luminescence system and its construction method |
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