CN1238102C - Silicon-carbon-graphite opposite-vertex anvil high-pressure vessel - Google Patents
Silicon-carbon-graphite opposite-vertex anvil high-pressure vessel Download PDFInfo
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- CN1238102C CN1238102C CN 200310103428 CN200310103428A CN1238102C CN 1238102 C CN1238102 C CN 1238102C CN 200310103428 CN200310103428 CN 200310103428 CN 200310103428 A CN200310103428 A CN 200310103428A CN 1238102 C CN1238102 C CN 1238102C
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Abstract
The present invention relates to a silicon-carbon-graphite opposite-vertex anvil high-pressure vessel which is composed of a silicon-carbon-graphite opposite-vertex pressure anvil sample unit and a hanging pressurization device, wherein an opposite-vertex pressure anvil adopts monocrystal silicon-carbon-graphite; the periphery of the pressure anvil can be provided or not provided with a supporting ring; the pressure anvil can be a concave anvil type silicon-carbon-graphite pressure anvil; a disk-shaped spring is arranged in the pressurization device. The high-pressure vessel enables the pressure anvil to generate ultrahigh pressure, allows the use and the measurement of large-volume samples, has the function of force measurement and is capable of measuring the value of the added pressure in advance before experimental measurement.
Description
The present invention relates to a kind of opposed anvils type high-pressure bottle that adopts new material and structure, especially a kind of silicon-carbon stone opposed anvils high-pressure bottle, described high-pressure bottle can produce 0.5-50GPa (1GPa ≈ 10,000 atmospheric pressure) pressure, can be used for carrying out under the hyperpressure physical property measurement of material, be more suitable for being used for the material physical property surveying work of X-line diffraction, particularly neutron diffraction experimental study aspect.
Background technology
In the high-pressure bottle technical field, opposed anvils type high-pressure bottle is a kind of simple in structure, produces the high high-pressure bottle of pressure.Its basic comprising element is the relative pressure anvil (Fig. 1) of a pair of anvil face.Sample 4 is positioned on the anvil face of pressing anvil 1, has packing 3 to surround around its side, by on press down anvil and packing 3 constitutes high pressure chest, sample transmission medium 5 on every side will press anvil 1 suffered external force F to be delivered on the sample 4 in the chamber in.Transmission medium 5 can be solid, liquid or gas.With solid, the liquid transmission medium is compared, and the gas transmission medium has hydrostatic pressing transfer characteristic completely, and stable chemical performance and can stand advantage such as high temperature heating can realize the mensuration of precision the most, so be a kind of optimal transmission medium.But the using gases transmission medium is also the highest to the requirement of experimental technique and equipment.When pressing anvil work, external force F acts on relative direction and presses anvil 1 back, makes sample 4 pressurizeds.For preventing to press anvil 1 to produce destruction under high pressure, its side is surrounded by high strength steel support ring 2, and support ring applies the prestressing force protection of side direction by interference fit to pressing anvil.When pressing anvil work, 3 of packings since self with on press down anvil powerful frictional force play and prevent to press pressure leakage in the chamber, and sample is by the crowded effect of flowing of pressure.For preventing that high pressure from pressing down flowing of anvil material and inefficacy, the pressure anvil must be by the high hardness material manufacturing.
The existing anvil material of pressing mainly contains two kinds: i.e. carbide alloy and diamond.
Press in the anvil type high-pressure installation at carbide alloy, carbide alloy presses anvil to reinforce with annular prestressed support ring.It allows sample that larger volume is arranged, but pressure is limited in below the 10GPa usually.But this device all uses the transmission medium of solid, thereby can not make sample be in pure hydrostatic pressing state.
In diamond anvil type high-pressure installation, diamond single crystal does not need the prestressing force support ring to reinforce just can produce the pressure of the 100GPa order of magnitude, and can adopt the gas transmission medium.The method of the gas-filling that is adopted is, with the diamond anvil integral container put into high pressure (about 3000 atmospheric pressure) gas tank, charge into gases at high pressure after, from the gas tank peripheral operation so that press anvil to load, the compression packing also makes its closure, and gases at high pressure are limited in around the sample.From high pressure gas holder, take out the diamond anvil container, operate its pressing mechanism again, make the sample supercharging.But the limitation of diamond anvil is it can only be used in the small sample of volume, usually at 0.1mm
3Below, thereby the experiment of many high-pressure physics, for example high pressure neutron diffraction is measured, because sample signal is faint, so in fact can not use this device to carry out the research of many physical properties of material under the high pressure.
Secondly, the pressure in the high pressure chest is provided by external impetus.Diamond single crystal is pressed anvil,, press the chamber very little, demanded driving force also little, can finish by attaching on installing very little mechanism and manual operation because the volume of sample is small.Therefore, the diamond anvil device is easy to carry, can be installed on X-line diffractometer, the synchrotron radiation X-line diffraction source bunch.Yet the pressures partially of several diamond anvils that use is not with the dynamometry function now, can not estimate stressed numerical value before experiment measuring, and it can only determine the pressure size with interior mark in experiment.
Experiment for bulk sample will be carried out in the container of big high pressure chest volume, and need to produce pressure with the large-tonnage hydraulic press.But hydraulic press and container can not be placed on the above-mentioned experimental assembly together.Common way is, the Prssure lock of press to sample fixed in the high-pressure bottle, again high-pressure bottle transferred to the experiment place from press and experimentizes.
Yet the rigidity of the at present this container that bears top load is very big, when container takes out from hydraulic press, often can only pin the some that hydraulic press is exerted pressure in the container.The pressure of loss makes stressed parts lax, cause sample around packing descend with pressing the sealing between anvil, this will cause the leakage of gas transmission medium and the failure of an experiment in the high pressure chest.
Summary of the invention
The present invention is directed to above-mentioned existing carbide alloy and press anvil type high-pressure installation and the existing defective of diamond anvil type high-pressure installation, propose a kind of opposed anvils type high-pressure bottle that adopts new material and structure.
Silicon-carbon stone opposed anvils high-pressure bottle of the present invention mainly by (one) silicon-carbon stone to roof pressure anvil sample unit (Fig. 2) and (two) pressue device, especially suspension type pressue device (Fig. 3) two large divisions constitutes.Mainly described sample unit and suspension type pressue device are described in detail below: (one) silicon-carbon stone is to roof pressure anvil sample unit (Fig. 2)
Described to roof pressure anvil sample unit by locking bung flange 204, adjustment screw 205, base 210, and support ring 206, packing 208, to roof pressure anvil 209,209 ' formation.Sample 207 and pressure transmission gas 211 on every side are closed in by in the space of pressing anvil 209 and packing 208 to be surrounded.Described pressure anvil sample unit at first is put in the plenum chamber after loading onto sample 207 and packing 208, feeds gases at high pressure, and sample is also surrounded by gases at high pressure (≈ 3,000 atmospheric pressure).Rotate two screws 201, promote briquetting 202 and make and press anvil 209,209 ', gases at high pressure are sealed in press in the anvil sample unit packing 208 pressurizations and distortion.Afterwards, in plenum chamber, take out pressure anvil sample unit,, pressure is locked with special spanner spin locking bung flange 204.Unload lower spiro cover 203 and screw 201 at last, the pressure anvil sample unit that be full of gases at high pressure this moment can be placed in the pressue device, and continues to boost on hydraulic press.
(2) suspension type pressue device (Fig. 3)
Described suspension type pressue device by pressure locking cover 301, upper piston 302, disk spring 303, shell 304, down upper piston 305, prestressing force support ring 306, on press anvil back seat 307, adjustment screw 309, press down anvil back seat 310, hyperbaric chamber 311, container lower cover 312 and pressurization hang cylindrical shell 313 and constitute.The effect of described pressue device is to utilize hydraulic press (not shown) to make sample 314 continue rising pressure.That is, after silicon carbide stone anvil sample unit 308 was placed into pressue device, hydraulic press promoted upper piston 302, by compression disk spring 303 external force was applied to lower piston 305, pressed anvil back seat 307 in the promotion, made at last and pressed anvil to produce hyperpressure.
In the described silicon-carbon stone opposed anvils high-pressure bottle roof pressure anvil sample unit is comprised:
A. a pair of silicon carbide stone anvil of reinforcing by the high strength steel support ring;
B. or the concave anvil type monocrystal of a kind of pressure surface of pressing anvil with ring concave structure press anvil;
But the pressure anvil sample unit filling mechanism that contains silicon carbide stone anvil sample unit (have two kinds press anvil types) of a can gases at high pressure transmission medium C.;
D. low stiffness suspension formula pressue device that holds described pressure anvil sample unit, and
E. the sample unit of preset high pressure gas constitutes the structure of the silicon-carbon stone opposed anvils high-pressure bottle of an integral body with the combination of pressing mechanism again under high pressure gas environment.
Specifically be described below:
A. silicon-carbon stone comes down to the monocrystal of carborundum (SiC).Large-sized in the world silicon-carbon stone crystal only synthesizes with artificial in recent years.Its hardness is near diamond and transparent.Xu Jian etc. use silicon-carbon stone to replace the pressure anvil of diamond as high-pressure bottle in the world first, and its advantage is to carry out the High-Voltage Experimentation of bulk sample.The structure of silicon carbide stone anvil sample unit as shown in Figure 2.Sample 207 and pressure transmission gas 211 on every side are closed in by in the space of pressing anvil 209 and packing 208 to be surrounded.Described pressure anvil sample unit at first is put in the plenum chamber after loading onto sample and packing, feeds gases at high pressure, and sample is also surrounded by gases at high pressure (≈ 3,000 atmospheric pressure).Rotate two screws 201, promote briquetting 202 make press anvil to 209, the pressurization of 209 ' packing and distortion, gases at high pressure are sealed in press in the anvil sample unit.Retrieval unit from plenum chamber with special spanner spin locking bung flange 204, locks pressure.Unload lower spiro cover 203 and screw 201 at last, the pressure anvil sample unit that be full of gases at high pressure this moment can be placed in the pressurizing vessel, and continues to boost on hydraulic press.
Main points of the present invention are as follows:
1 the present invention has used silicon carbide stone anvil.
2 use the high strength support ring to apply the working strength that prestressing force is strengthened silicon carbide stone anvil, improve working pressure.The monocrystal that uses is pressed anvil (diamond, sapphire, zircon) in the past
All Do not use support ringExperiment shows that the result of use of prestressing force support ring of the present invention is given prominence to, and sees the following form:
The maximum pressure that silicon carbide stone anvil reaches
| Press anvil diameter (mm) | Mesa diameter (MM) | The maximum pressure that reaches (GPa) | |
| No support ring | Support ring is arranged | ||
| 4 4 4 8 8 8 | 0.5 1.0 2.0 1.0 1.4 2.8 | 14.7 4.0 1.0 | 38.5 30.0 6.0 40.0 42.0 30.0 |
B. in the present invention, also can adopt a kind of concave anvil type silicon carbide stone anvil, see Fig. 4.Its advantage is the sample that allows to use large volume, and the packing dimensionally stable, helps experimental implementation.Also there is not at present the monocrystal of concave anvil type silicon-carbon stone to press anvil to be used in the world.
Recessed The anvil type presses the size of anvil to see Fig. 4.
C. adopt the silicon carbide stone anvil sample unit:
The large-tonnage container obviously is difficult to integrally be placed into high pressure gas holder.Therefore our scheme is taked only to come can high pressure gas dielectric with the silicon carbide stone anvil sample unit, and then it is placed on the method for pressurizeing in the container.This method allows to use pressure anvil and the sample more much bigger than traditional diamond anvil (to reach 1cm at present
3About), thereby be a kind of pressure method that has development potentiality.It provides the possibility of doing more accurate High-Voltage Experimentation on large sample more.
D. adopted low stiffness suspension formula pressue device (Fig. 3), its effect is to utilize hydraulic press to make sample continue rising pressure.After silicon carbide stone anvil sample unit 308 was placed into pressurizing vessel, hydraulic press promoted upper piston 302, by compression disk spring 303 external force was applied to lower piston 305, pressed anvil back seat 307 in the promotion, made at last and pressed anvil to produce hyperpressure.
The invention main points of low stiffness suspension formula pressue device are:
1. owing to added flexible spring system.When device reached its maximum load (for example 30 tons), the distortion of stressed system reached 4mm, pinned distortion at pressure locking cover 1, after device takes out from hydraulic press (not shown),
In the high pressure chestPressure has only seldom lax, and this is that traditional locking device is not accomplished.
2. because device can directly pressurize, can directly determine to be applied to power on the sample unit on hydraulic press, can provide foundation for the numerical value that control is exerted pressure from oil pressure gauge.
Being explained as follows of above-mentioned the first, the second content: from essence, lock pressure is exactly will lock by loading each that produced to be subjected to the strain of force mechanisms, and on traditional container, this distortion is very small.Because only from the bottom and the top pressurization of device, device is stressed unreasonable during owing to pressurization for traditional pressuring method, the assembling space fails thoroughly to be eliminated between part.Compensate mutually with the assembling space so when release, be very easy to produce strain, thereby eliminate added pressure.Be suspended on and pressurize on cylindrical shell 313 (see figure 3)s and the suspension type load mode that is adopted among the present invention is a handle assembly, can make all stressed parts when loading, reach abundant distortion, fit-up gap between each part is fully disappeared, when no longer becoming release and the factor that offsets of strain, thereby eliminated the lax factor of pressure when lock pressure, press unloading largely.
The inventor confirms by the breadboard experimental data in the U.S., under before adopting and the situations above-mentioned two kinds of technology of employing the present invention, the relaxation cases of pressure during the press unloading: when 30 tons of load, the stressed part elastic deformation's of container summation is about 0.3mm, the big order of magnitude in about container part assembling space.This means that when not taking measures, 10-50% pressure up and down can relax when press unloads.After adopting above-mentioned two technology, because stressed system resilience deformation total amount is increased to more than the 4mm, be more than 100 times of pore size of assembling, add that suspension type loads can effectively eliminate the assembling space again, so correspondingly the pressure slack should be below one of percentage.
E. by sample unit of pre-installing under the sample high pressure gas environment and pressurizing vessel combination and constitute the structure of an integral high pressure case again.
Because volume is less, pressure vessel and power are integrated and outward except diamond anvil, and all High-Voltage Experimentation devices all are directly to put into hydraulic press by the high-pressure bottle that comprises sample (device) to exert pressure and finish.In container of the present invention, invented sample, press anvil, packing, do as a wholely with transmission medium is independent, that is, press the anvil sample unit, and remaining mechanical device structure, promptly low stiffness suspension formula pressue device is as the constructional device of another independent sector.Such technical measures can strengthen the expansion of the changeability and the pressure limit of high-tension measurement function widely, owing to press the anvil sample unit to become relative separate component, all are measured the variation that requires and can pass through to press the coordination adjustment of each part in the anvil sample unit (for example: the kind and the size of pressure anvil, the table top size, the material of packing and size, the selection of solid-liquid gas transmission medium etc.) solve, and need not process or reequip the mechanical device of container again.The regularization and the versatile that can help high-pressure bottle like this promote the development of high pressure technique.
Description of drawings
Anvil structure and pressurization principle schematic are pressed in accompanying drawing 1 expression.
Accompanying drawing 2 expression silicon-carbon stones are to the structural representation of roof pressure anvil sample unit.
Part 201,202 and part 203 take off later in inflation and lock pressure only for the usefulness of operating in the air-pressure chamber among the figure.
Accompanying drawing 3 expression suspension type pressue device structural representations.
Fig. 1 represents common pressure anvil structure and presses anvil pressurization principle that described pressure anvil structure is by pressing anvil 1, prestressing force support ring 2, packing 3, sample 4 and transmission medium 5 (can be gas, liquid or solid) formation.
Fig. 2 represents the structure of silicon-carbon stone of the present invention to roof pressure anvil sample unit, wherein, described to roof pressure anvil sample unit by locking bung flange 204, adjustment screw 205, base 210, and support ring 206, packing 208, to roof pressure anvil 209,209 ' formation.Sample 207 and pressure transmission gas 211 on every side are closed in by in the space of pressing anvil 209 and packing 208 to be surrounded.Described pressure anvil sample unit at first is put in the plenum chamber after loading onto sample 207 and packing 208, feeds gases at high pressure, and sample is also surrounded by gases at high pressure (≈ 3,000 atmospheric pressure).Rotate two screws 201, promote briquetting 202 and make and press anvil 209,209 ', gases at high pressure are sealed in press in the anvil sample unit packing 208 pressurizations and distortion.Afterwards, in plenum chamber, take out pressure anvil sample unit,, pressure is locked with special spanner spin locking bung flange 204.Unload lower spiro cover 203 and screw 201 at last, the pressure anvil sample unit that be full of gases at high pressure this moment can be placed in the pressue device, and continues to boost on hydraulic press.
Fig. 3 represents suspension type pressue device structure, described suspension type pressue device by pressure locking cover 301, upper piston 302, disk spring 303, shell 304, down upper piston 305, prestressing force support ring 306 (also can not having prestressing force support ring 306), on press anvil back seat 307, adjustment screw 309, press down anvil back seat 310, hyperbaric chamber 311, container lower cover 312 and pressurization hang cylindrical shell 313 and constitute.The effect of described pressue device is to utilize hydraulic press (not shown) to make sample 314 continue rising pressure.That is, after the silicon carbide stone anvil sample unit was placed into pressue device, hydraulic press promoted upper piston 302, by compression disk spring 303 external force was applied to lower piston 305, pressed anvil back seat 307 in the promotion, made at last and pressed anvil to produce hyperpressure.
Fig. 4 represents the cross sectional view of the concave anvil type silicon carbide stone anvil of the another kind of type of the present invention, the belt recessed anvil ring 402 and the recessed anvil heart 403 are set on the pressure anvil face 404 of described pressure anvil 401, and make packing 208 seal described pressure anvil face 404 and form projection with recessed anvil ring 402 corresponding positions, this projection and recessed anvil ring 402 are suitable, make packing 208 squeeze stream to outer rim so be unlikely when the roof pressure anvil is pressurizeed.
Concrete embodiment
Utilize silicon-carbon one-tenth made of stones described to roof pressure anvil 209,209 ', described pressure anvil periphery is provided with support ring 206 (also can not having support ring), described pressure anvil sample unit is after loading onto sample 207 and packing 208, at first be put in the plenum chamber, feed gases at high pressure, sample is also surrounded by gases at high pressure (≈ 3,000 atmospheric pressure).Rotate two screws 201, promote briquetting 202 and make and press anvil 209,209 ', gases at high pressure are sealed in press in the anvil sample unit packing 208 pressurizations and distortion.Afterwards, in plenum chamber, take out pressure anvil sample unit,, pressure is locked with special spanner spin locking bung flange 204.Unload lower spiro cover 203 and screw 201 at last, the pressure anvil sample unit that be full of gases at high pressure this moment can be placed in the suspension type pressue device.Described suspension type pressue device by pressure locking cover 301, upper piston 302, disk spring 303, shell 304, down upper piston 305, prestressing force support ring 306, on press anvil back seat 307, adjustment screw 309, press down anvil back seat 310, hyperbaric chamber 311, container lower cover 312 and pressurization hang cylindrical shell 313 and constitute.After silicon carbide stone anvil sample unit 308 was placed into pressue device, hydraulic press (not shown) promoted upper piston 302, by compression disk spring 303 external force was applied to lower piston 305, pressed anvil back seat 307 in the promotion, made at last and pressed anvil to produce hyperpressure.
The pressure anvil of the another kind of type of the present invention is the concave anvil type silicon carbide stone anvil, described pressure anvil 209,209 ' pressure anvil face 404 on the belt recessed anvil ring 402 and the recessed anvil heart 403 are set, and make packing 208 seal described pressure anvil face 404 and form projection with recessed anvil ring 402 corresponding positions, this projection and recessed anvil ring 402 are suitable, make packing squeeze stream to outer rim so be unlikely when the roof pressure anvil is pressurizeed.By the recessed anvil heart 403 sample 207 can be set.Wherein, the indent radius of circle r1=0.01-0.5A of recessed anvil ring 402; The indent radius of circle r2=0.01-0.5A of the recessed anvil heart 403; The indent circle centre-to-centre spacing of recessed anvil ring 402 is pressed the distance h 1=-0.5-0.5A of anvil face 404; The indent circle centre-to-centre spacing of the recessed anvil heart 403 is pressed the distance h 2=-0.5-0.5A of anvil face 404; Between the indent of the recessed anvil ring 402 circle center apart from φ=0.01-0.5A; Pressing the diameter of anvil face 404 is A, for example A=(0.1-1000) millimeter.
Claims (5)
1. silicon-carbon stone opposed anvils high-pressure bottle, it is characterized in that described high-pressure bottle is by pressing anvil sample unit and pressue device to form, described pressure anvil sample unit is that a kind of silicon-carbon stone is to roof pressure anvil sample unit, described silicon-carbon stone to roof pressure anvil sample unit by locking bung flange (204), adjustment screw (205), base (210), and support ring (206), packing (208), to roof pressure anvil (209,209 ') constitute, wherein said is to adopt monocrystalline silicon-carbon one-tenth made of stones to roof pressure anvil (209,209 ').
2. silicon-carbon stone opposed anvils high-pressure bottle as claimed in claim 1, it is characterized in that described pressue device is a kind of suspension type pressue device, described suspension type pressue device be by pressure locking cover (301), upper piston (302), disk spring (303), shell (304), down upper piston (305), on press anvil back seat (307), adjustment screw (309), press down anvil back seat (310), hyperbaric chamber (311), container lower cover (312) and pressurization hang cylindrical shell (313) and constitute.
3. silicon-carbon stone opposed anvils high-pressure bottle as claimed in claim 1, it is characterized in that described pressue device is a kind of suspension type pressue device, described suspension type pressue device be by pressure locking cover (301), upper piston (302), disk spring (303), shell (304), down upper piston (305), prestressing force support ring (306), on press anvil back seat (307), adjustment screw (309), press down anvil back seat (310), hyperbaric chamber (311), container lower cover (312) and pressurization hang cylindrical shell (313) and constitute.
4. silicon-carbon stone opposed anvils high-pressure bottle as claimed in claim 1 or 2, it is characterized in that described silicon-carbon stone in the roof pressure anvil sample unit to roof pressure anvil (209,209 ') be a kind of be the concave anvil type silicon carbide stone anvil, described pressure anvil (209,209 ') pressure anvil face (404) on the belt recessed anvil ring (402) and the recessed anvil heart (403) are set, and make the described pressure anvil face of sealing of packing (208) (404) and form projection with the corresponding position of recessed anvil ring (402), this projection and recessed anvil ring (402) are suitable, make packing squeeze stream so when the roof pressure anvil is pressurizeed, be unlikely, sample (207) can be set by the recessed anvil heart (403) to outer rim.
5. silicon-carbon stone opposed anvils high-pressure bottle as claimed in claim 4 is characterized in that the indent radius of circle r1=0.01-0.5A of the recessed anvil ring (402) of described concave anvil type silicon carbide stone anvil; The indent radius of circle r2=0.01-0.5A of the recessed anvil heart (403); The indent circle centre-to-centre spacing of recessed anvil ring (402) is pressed the distance h 1=-0.5-0.5A of anvil face (404); The indent circle centre-to-centre spacing of the recessed anvil heart (403) is pressed the distance h 2=-0.5-0.5A of anvil face (404); Between the indent of recessed anvil ring (402) the circle center apart from φ=0.01-0.5A; Pressing the diameter of anvil face (404) is A, the A=0.1-1000 millimeter.
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| CN 200310103428 CN1238102C (en) | 2003-10-31 | 2003-10-31 | Silicon-carbon-graphite opposite-vertex anvil high-pressure vessel |
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| CN 200310103428 CN1238102C (en) | 2003-10-31 | 2003-10-31 | Silicon-carbon-graphite opposite-vertex anvil high-pressure vessel |
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| CN1238102C true CN1238102C (en) | 2006-01-25 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102507618B (en) * | 2011-11-24 | 2014-02-26 | 四川大学 | Anvil cell high pressure device for in situ neutron diffraction |
| CN105628615B (en) * | 2015-12-24 | 2018-02-23 | 中国科学院合肥物质科学研究院 | A kind of improved diamond compresses centralising device with base |
| CN105928777A (en) * | 2016-07-04 | 2016-09-07 | 中国科学院半导体研究所 | Pressurizing device of hydrostatic pressure |
| CN107252662B (en) * | 2017-08-16 | 2019-12-13 | 中国工程物理研究院核物理与化学研究所 | Device for generating ultrahigh voltage |
| CN107870106A (en) * | 2017-10-20 | 2018-04-03 | 金华职业技术学院 | A kind of method of the forming gas polymer under the conditions of cryogenic high pressure and in-situ test |
| CN110926959B (en) * | 2019-12-04 | 2022-04-05 | 四川大学 | High-temperature high-pressure loading device for in-situ neutron diffraction |
| CN113933143A (en) * | 2021-10-12 | 2022-01-14 | 中国科学院深海科学与工程研究所 | Diamond pressure cavity pressurizing device |
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