CN1241678C - Transparent model alloy device - Google Patents
Transparent model alloy device Download PDFInfo
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- CN1241678C CN1241678C CN03133620.5A CN03133620A CN1241678C CN 1241678 C CN1241678 C CN 1241678C CN 03133620 A CN03133620 A CN 03133620A CN 1241678 C CN1241678 C CN 1241678C
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- transparent model
- model alloy
- quartz glass
- glass tube
- temperature
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 47
- 239000000956 alloy Substances 0.000 title claims abstract description 47
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 11
- IAHFWCOBPZCAEA-UHFFFAOYSA-N succinonitrile Chemical compound N#CCCC#N IAHFWCOBPZCAEA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000004065 semiconductor Substances 0.000 claims abstract description 5
- 229920001342 Bakelite® Polymers 0.000 claims description 6
- 239000004637 bakelite Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
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- 238000012360 testing method Methods 0.000 abstract description 4
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- 239000007788 liquid Substances 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 8
- 238000013508 migration Methods 0.000 description 6
- 230000005012 migration Effects 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 230000005486 microgravity Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000003708 ampul Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- JCBUWMZJSUWWDY-UHFFFAOYSA-N butanedinitrile hydrate Chemical compound O.N#CCCC#N JCBUWMZJSUWWDY-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010034719 Personality change Diseases 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006023 eutectic alloy Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The present invention provides a transparent model alloy device which comprises a quartz glass pipe holding transparent model alloy, a temperature gradient platform and a detection system. The transparent model alloy device is characterized in that a hot table of the temperature gradient platform is heated by a PTC heating module, a cold table is cooled by a semiconductor refrigeration device, temperature is accurately controlled, the distance of the hot table and the cold table can be arbitrarily regulated, and the interval temperature following position change presents in linear relationship. The transparent model alloy device has the advantages that the accuracy of temperature control is high, and the transparent model alloy device can accurately determine a flow field, a temperature field and a concentration field; the succinonitrile of the model alloy can not be extruded in the process of raising the temperature to the highest temperature of 90 DEG C, and a photography picture is kept clear in a flight test.
Description
Technical field:
The present invention relates to carry out the device of material science simulated experiment, be specially the device that is used for space metal alloy experiment.
Background technology:
Owing to got rid of the influence of gravity, make acquisition homogeneous immiscible alloy become possibility under the space microgravity condition, but the solidification experiments result of this class alloy under microgravity condition who carries out in recent years and unsatisfactory.Have been found that under the space microgravity condition, cause by the drop surface tension gradient, still make with the drop transport phenomena (Marangoni migration) of gravitational independent and to solidify final tissue generation two and be separated.Because the metal material fusing point is high and opaque, process of setting is invisible, can't carry out Real Time Observation and quantitative theory analysis to the two firm mechanical process that are separated influence to the Marangoni convection current, can only infer contingent phenomenon in the process of setting the result after analysis is solidified, can not sum up universal law effectively theoretically.In order to understand Marangoni migration influence better to monotectic alloy two phase separations, utilize with transparent model alloy system like metal alloy fusing and the solidifying phase be experimental technique very easily.
The Marangoni convection current is hydromechanical research field, and the fluid scientist has carried out the heat hair migration experiment of a large amount of relevant bubbles and drop under the condition of Gravity changer.It is suitable with metal with hot IFT effect length that the fusing of transparent model alloy is dripped, and its growth kinetics behavior is also similar to metal.To recent USMP-4, transparent model alloy is utilized by worldwide different scientists and has carried out the research of the solidification theory under a considerable number of microgravity condition from more early stage TEXUS10.
Transparent alloy graining experiment is as a kind of means of ground experiment, both can study it to the influences of two phase separations in the monotectic alloy and to the influence of eutectic alloy tissue, can study the influence of the reciprocation, wetability of solid phase particles and solid/liquid interfaces in the composite again the immiscible alloy tissue by introducing the Marangoni convection current.When space test, run into and two hang-ups: the liquid in the quartz glass tube is because thermal expansion and extrude with carrier vibration from sealing ring and to cause photographic picture unintelligible
Summary of the invention:
The invention provides and a kind ofly can introduce Marangoni migration, temperature-controlled precision height, can accurately measure flow field, temperature field and concentration field and vertically reach the platform optics real-time monitored of horizontal setting test, the transparent model alloy experimental provision of quantitative measurment thermophysical parameter.
A kind of transparent model alloy experimental provision provided by the invention, comprise the quartz glass tube (10), the thermograde platform at quartz glass tube (10) two ends, the outer detection system of quartz glass tube (10) that fill transparent model alloy, it is characterized in that: described thermograde platform is vertical, above hot platform heat with PTC heating module (3), following cold is cooled off with semiconductor cooling device (14); Accurate control temperature, realize Re Tai with cold between distance adjustable arbitrarily, the interval temperature is linear with change in location.
The quartz glass tube of transparent model alloy experimental provision of the present invention (10) is connected with the liquid-filling valve (1) that its top has relief pipe.When model allo expanded, the liquid that overflows just flowed in the relief pipe of liquid-filling valve (1); When temperature descended, owing to will produce negative pressure in the quartz ampoule (10), liquid returned quartz ampoule (10) lining automatically, retained problem thereby solved the model allo expansion.
The quartz glass tube of transparent model alloy experimental provision of the present invention (10) by adjusting and fixedly pole (7) extruding is fixing, makes pressure evenly and acquire a certain degree with two block pressur plates (8).
The quartz glass tube of transparent model alloy experimental provision of the present invention (10) also has certain flexible the time at seal washer (9,12), again by adjust and fixedly the nut on the pole (7) oppositely lock, reach the purpose of antivibration buffering.
The detection system of transparent model alloy experimental provision of the present invention is the transmission-type Olympus microscope that has microscope camera system, develops to be used to the observing solid/liquid interfaces form.
The detection system of transparent model alloy experimental provision of the present invention has Model-760 type thermal infrared imager, observing and the Temperature Distribution of record melt, and with formation, distribution and the measurement of rate of flow of video camera observed and recorded drop.
The transparent model alloy of transparent model alloy experimental provision of the present invention is selected succinonitrile for use.
The detection system of transparent model alloy experimental provision of the present invention is to be fixed on the same block of plate with quartz glass tube (10), thermograde platform, makes the vibration that produces on equipment and the camera chain synchronous, to reduce environment to detecting the influence of photography.
The plate of transparent model alloy experimental provision of the present invention is the thick bakelite plate of 10mm, and bakelite plate can be clamped fixing with high-density sponge up and down, thereby can obtain photographic picture clearly.
The advantage of transparent model alloy experimental provision provided by the invention is: the temperature-controlled precision height, can accurately measure flow field, temperature field and concentration field, and transparent model alloy can not be extruded in temperature-rise period, and photographic picture is clear.
Description of drawings:
Fig. 1 is the schematic diagram of transparent model alloy experimental provision.
Fig. 2～Fig. 5 is the second phase droplet of rich water in the succinonitrile-water monotectic model allo transition process to the hot junction under the Marangoni phorogenesis, and the final solid/liquid interfaces that forms.
The specific embodiment:
This transparent model alloy experimental provision comprises the quartz glass tube (10), thermograde platform and the detection system that fill the transparent model alloy succinonitrile.
The thermograde platform is vertical, and top hot platform is heated with PTC heating module (3), and following cold is cooled off with semiconductor cooling device (14); Temperature system adopts Jackson type thermograde platform, realize Re Tai with cold between apart from adjustable arbitrarily, temperature is linear with change in location at interval, utilize ultra thermostat and low temperature thermostat bath accurately to control Re Tai and cold temperature, with the temperature of thermocouple (11) detection quartz glass tube (10) lining, thermograde changes with the change of sample movement velocity hardly.PTC heating module (3) is pressed on the red copper conductor (4) of quartz glass tube (10) by pressing plate (5), pad (2) and top board (8) with locking bar (6).Semiconductor cooling device (14) with locking bar (16) by having louvre (20) red copper radiating block (15) and lower platen (8) be pressed in quartz glass tube (10) red copper conductor (13) on, lower platen (8) is fixed on the drain pan (19) of band ventilating fan (18) with fixed bar (17).
The device top design has been installed one both can alleviate the liquid-filling valve (1) of the band relief pipe of expansion of liquids again to quartz glass tube (10) lining injecting fluid; When succinonitrile expands, the liquid that overflows just flows in the relief pipe of liquid-filling valve (1), when temperature descends, owing to will produce negative pressure in the quartz glass tube (10), liquid returns quartz glass tube (10) lining automatically, retains problem thereby solved the succinonitrile expansion of liquids; Meticulously two block pressur plates (8) are adjusted by 4 and in the middle of fixedly pole (7) is fixed on quartz glass tube (10) extruding of contain succinonitrile liquid, when uniform pressure acquires a certain degree, seal washer (9,12) also has certain flexible the time, adjust by 4 again and fixedly the nut on the pole (7) oppositely lock, reach the purpose of antivibration buffering.
The transmission-type Olympus microscope that has microscope camera system is used to observe the solid/liquid interfaces form and develops.The Temperature Distribution of melt is observed and record by Model-760 type thermal infrared imager.With sheet laser irradiation, by the forming of video camera observed and recorded drop, distribution and measurement of rate of flow.
When doing flight test aloft, camera chain and see-through model device are fixed on the bakelite plate of a thick 10mm simultaneously, make the vibration that produces on equipment and the camera chain synchronous, with high-density sponge bakelite plate is clamped up and down more fixing, thereby reach photographic picture purpose clearly.
Carried out having buoyancy convection current and the nowed forming of surface tension driving convection current and the analog study of flow tendency in the fluid of Free Surface.The size of buoyancy convection current determines by Rayleigh number, with the vertical direction thermograde reduce and the form that forms by the two eddy current of static state-two born of the same parents' eddy current-unit cell eddy current-unstability attitude change.Apply thermograde being parallel to the Free Surface direction, Marangoni convection current and buoyancy exist simultaneously, along with the increase of thermograde realizes the Marangoni Flow Field Distribution.
Under different-alloy composition and thermograde condition, by forming core, the growth of controlling the second phase drop, observe the heat capillary transport phenomenon (Thermocapillary Migration) of the second phase drop, attempted to draw the migration rate of the second phase drop and the relation of concentration and thermograde.Also having observed the relation and the interface configuration that occur near convection current of solid/liquid interfaces and solute boundary layer thickness simultaneously changes.This device has successfully carried out solidifying of transparent monotectic model allo under the low gravity condition and has carried experiment.To the transition process in hot junction, and the final solid/liquid interfaces that forms (is seen Fig. 2～Fig. 5) to the second phase droplet of observing rich water in succinonitrile-water monotectic model allo under the Marangoni convection action.
Claims (10)
1, a kind of transparent model alloy experimental provision, comprise the quartz glass tube (10), the thermograde platform at quartz glass tube (10) two ends, the outer detection system of quartz glass tube (10) that fill transparent model alloy, it is characterized in that: described thermograde platform is vertical, above hot platform heat with PTC heating module (3), following cold is cooled off with semiconductor cooling device (14).
2, according to the described transparent model alloy experimental provision of claim 1, it is characterized in that: described quartz glass tube (10) is connected with the liquid-filling valve (1) that its top has relief pipe.
3, according to claim 1 or 2 described transparent model alloy experimental provisions, it is characterized in that: described quartz glass tube (10) passes through to adjust with two block pressur plates (8) and fixedly pole (7) extruding is fixing.
4, according to the described transparent model alloy device of claim 3, it is characterized in that: described quartz glass tube (10) by adjust and fixedly the nut on the pole (7) oppositely lock.
5, according to the described transparent model alloy experimental provision of claim 1, it is characterized in that: described detection system is the transmission-type Olympus microscope that has microscope camera system.
6, according to claim 1 or 5 described transparent model alloy experimental provisions, it is characterized in that: described detection system has Model-760 type thermal infrared imager.
7, according to the described transparent model alloy experimental provision of claim 1, it is characterized in that: described transparent model alloy is a succinonitrile.
8, according to the described transparent model alloy experimental provision of claim 1, it is characterized in that: described detection system is to be fixed on the same block of plate with quartz glass tube (10), thermograde platform.
9, according to the described transparent model alloy device of claim 8, it is characterized in that: described plate is the thick bakelite plate of 10mm.
10, according to the described transparent model alloy experimental provision of claim 9, it is characterized in that: described bakelite plate is clamped fixing up and down with high-density sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03133620.5A CN1241678C (en) | 2003-08-01 | 2003-08-01 | Transparent model alloy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03133620.5A CN1241678C (en) | 2003-08-01 | 2003-08-01 | Transparent model alloy device |
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| Publication Number | Publication Date |
|---|---|
| CN1579606A CN1579606A (en) | 2005-02-16 |
| CN1241678C true CN1241678C (en) | 2006-02-15 |
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| CN03133620.5A Expired - Fee Related CN1241678C (en) | 2003-08-01 | 2003-08-01 | Transparent model alloy device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004638A (en) * | 2014-04-24 | 2015-10-28 | 西北工业大学 | Speed-accurately controlled transparent solution phase-separation observation apparatus |
| CN105548183B (en) * | 2015-12-20 | 2019-03-05 | 华南理工大学 | A kind of microreactor of visible observation gas hydrate reaction process |
| CN108766193B (en) * | 2018-05-24 | 2020-11-06 | 清华大学 | Device for in-situ observation of solidification of low-melting-point transparent alloy under pressure |
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