CN103464056B - Anvil cell high-pressure device capable of generating compression-shear combined loading - Google Patents
Anvil cell high-pressure device capable of generating compression-shear combined loading Download PDFInfo
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- CN103464056B CN103464056B CN201310423510.5A CN201310423510A CN103464056B CN 103464056 B CN103464056 B CN 103464056B CN 201310423510 A CN201310423510 A CN 201310423510A CN 103464056 B CN103464056 B CN 103464056B
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Abstract
The invention discloses an anvil cell high-pressure device capable of generating compression-shear combined loading. The anvil cell high-pressure device consists of an anvil cell sample system and a pressure device system. Two pressing anvils for forming the anvil cell are opposite and parallel to each other; the surfaces of the two pressing anvils tilt and form an angle with a horizontal plane; by applying a pre-eccentricity technology on the basis of substantially coaxial arrangement, a sliding surface generates a larger displacement; meanwhile, the sliding of an elastic washer strengthens the effect of the shear stress. The anvil cell high-pressure device can be used for researching the effect of the shear stress on the structures, the mechanical, physical, chemical properties and the like of the materials under static and high pressures.
Description
Technical field
The invention belongs to high-pressure installation technical field, in particular to a kind of anvil cell high pressure device that can produce combined compression-shear loading, this invention can be applied to the research of research Static pressure down cut stress to the crystal structure of material and the performance such as mechanics, physics and chemistry.
Background technology
High pressure can cause the crystal structure of material to be different from the situation of normal pressure, thus recurring structure phase transformation, physical property change and interatomic interaction, synthesize new function material, even occur new physical phenomenon, produce unusual chemical reaction.Most materials in universe are all located in a high voltage state, and therefore high-pressure science and technology can be widely used in the fields such as physics, chemistry, geoscience, planetary science, materialogy, new forms of energy, national defence and biomedicine.Anvil cell high pressure device, two sides rise pressure device, these Static pressure experimental provisions such as pressure device, cubic apparatus high-pressure installation and Multistage supercharging device are risen at four sides, make people can study crystal structure and the physical property of material under higher temperature, pressure condition, in high-pressure science research, play vital effect.
In the research of current Static pressure, what major part produced is hydrostatic pressing, namely by adding transmission medium in sample cavity, shearing effect is left in the basket, but in fact shear stress extensively exists, and when the decomposition of phase transformation and material, more easily occur when having shear stress to exist.(Yanzhang Ma et al. (2006) the J. Phys.:Condens. Matter 18 such as the Ma of the U.S., S1075.) rotary diamond opposed anvils is adopted to have studied phase structure and the character of the condensed state matter such as nano material, mineral under super-pressure and Strong shear effect, find by high pressure with shearing effect in conjunction with time, can be there is many unusual appearances in material, thus propose new direction for the future development of super-pressure science.The patent of China " vertical with rotate composite pressurized many anvils press " (application number 201210590703.6) possesses rotary presser function by making traditional high-pressure installation, thus the synthesis of new material under realizing shear action.Above shear is all for rotational shear effect, and the high-pressure installation adopting translation gliding inclined-plane to produce shearing is not reported so far.In fact the effect that translation gliding is sheared can not be ignored, especially apply in more geoscience research at opposed anvils, fracture belt and the shear band of huge extrusion stress and shear stress is had in orogenic belt earth's surface, form various tomography, as in offlap, stress is translation shear stress, but not rotational shear stress.The object of the invention is the blank filling up prior art, the translation gliding inclined-plane proposed produces the new technology of combined compression-shear loading, can realize the acting in conjunction of compression and shear stress, and shear stress can equal control, shear stress amplitude can effectively regulate.
Summary of the invention
The object of the present invention is to provide a kind of anvil cell high pressure device that can produce compression and shear stress Combined Loading.Adopt this device can study the impact of hyperpressure condition down cut stress on material structure and performance, especially pressure cut effect this extreme case under on the phase of material and the impact of form, find novel thing phase, optimize new material, contrast with the result of theoretical prediction simultaneously, development is more suitable for functional and the molecule power theory of extreme condition, realizes experiment and theoretical convergence.
The technical solution realizing the object of the invention is: a kind of anvil cell high pressure device that can produce combined compression-shear loading, comprise pressue device system and anvil sample system is pressed to top, pressue device internal system is arranged on to top pressure anvil sample system, pressue device system comprises pressure head, cavity seat and loading bolt, pressure head is arranged on above cavity seat, by N number of loading bolt be arranged symmetrically with, pressure head and cavity seat are fixed together, N >=4, and pressurize by tightening loading bolt, pressure head is made up of termination and stick harness, and termination is arranged on stick harness top, is provided with a cavity bottom stick harness, and the cylinder of cavity seat and stick harness forms the cylindrical drum of cylinder guiding pair, and pressure head and cavity seat are assembled together by this cylinder guiding pair, it is characterized in that: top pressure anvil sample system is comprised to two the pressure anvils be arranged symmetrically with, support ring, metallic gasket, tungsten carbide base and elastic washer, two pressure anvils are arranged two respectively in support ring, a hole is provided with in the middle of metallic gasket, metallic gasket is between two pressure anvils, the hole of two pressure anvils and metallic gasket forms sample cavity, two pressure anvils are separately fixed on tungsten carbide base, elastic washer is arranged on outside the support ring of the pressure anvil being positioned at bottom, the pressure anvil being positioned at top is fixed on the cavity of stick harness by tungsten carbide base, the pressure anvil being positioned at bottom is fixed on bottom cavity seat by tungsten carbide base.
Pressure anvil is cone, and the drift angle of cone cuts out an inclined-plane, and this inclined-plane is the anvil face of pressure anvil, anvil face becomes α angle with horizontal plane, 0 ° of < α≤90 °, and two pressure anvil anvil faces of composition opposed anvils are relative, coaxially arranged, and anvil face is parallel to each other, forms translation gliding inclined-plane.Therefore, this is a kind of combined compression-shear loading technology.
Pad a circle elastic washer outward pressing down anvil support ring, its material is spring steel or rubber etc., and when applying high pressure to top anvil, the slippage of elastic washer can increase shear force.
In order to increase shear stress further, on the basis that almost coaxial is arranged, adopting pre-eccentric technology, making slide surface have larger displacement.
According to the difference of different experiments to pressure size requirements, the material that intensity, hardness and toughness etc. can be selected different makes top pressure anvil, compatible polytype pressure anvil.Pressure anvil material can be single-crystal diamond, carborundum, zirconium dioxide, alundum (Al2O3), tungsten carbide or Nano diamond super-hard compound material etc.When its material is carborundum, its pressure anvil anvil face can be comparatively large, is conducive to operation, allows the sample using and measure large area or volume.
Because the anvil face of pressing anvil is inclined-plane, pad may slide, and in order to fixing metal pad, its cross-sectional area can be made slightly larger than pressure anvil face cross-sectional area, and close up in pressing down anvil face.
The spring steel that Metallic gasket material is Inconel alloy 625, Inconel alloy 1750, hard stainless steel T301, phosphorus content are 1%, Pt metal, Mo, Ta or Re.
Pressure head arranges a through hole, arranges a bellmouth bottom cavity seat, through hole, bellmouth and pressure anvil are positioned at same axis, are beneficial to printing opacity, for gathering spectrum when ruby nominal pressure.
The present invention compared with prior art, its remarkable advantage: translation gliding inclined-plane proposed by the invention produces the new technology of combined compression-shear loading, the acting in conjunction of compression and shear stress can be realized, and shear stress can equal control, shear stress amplitude can effectively regulate, and technological merit is better than rotary shear.
Accompanying drawing explanation
Fig. 1 is the opposed anvils structural representation on band translation gliding inclined-plane.
Fig. 2 is that pressure cuts combined stress loading schematic diagram, and external forces F, can be decomposed into the directed force F perpendicular to inclined-plane by inclined-plane
σ=Fcos α, for generation of compression, and is parallel to the directed force F on inclined-plane
τ=Fsin α, for generation of shear stress.
Fig. 3 is of the present invention to top pressure anvil sample system structural representation.
Fig. 4 is cross-sectional view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment 1 presses the processing of anvil 1
Experimentally to pressure size and the requirement of pressing anvil 1 anvil face size, carborundum is adopted to make material as pressure anvil 1.Pressure anvil 1 is cone, and the drift angle of cone cuts out an inclined-plane, and this inclined-plane is the anvil face of pressure anvil 1, and anvil face becomes 30 ° of angles with horizontal plane.The two pressure anvils 1 that anvil face is relative are arranged in stick harness 6 and cavity seat 9 end face cavity respectively, and two pressure anvil 1 anvil faces of composition opposed anvils are relative, coaxially arranged, and anvil face is parallel to each other.Outside pressure anvil 1, arrange support ring 2, pressure anvil 1 and support ring 2 contact surface are with horizontal line and non-fully is vertical, have 2 ~ 5 ° of angles, by this interference fit, pressure anvil 1 are applied to the prestressing force protection of side direction, prevent pressure anvil 1 under high pressure damaging.
The making of embodiment 2 pad 4
Hard stainless steel T301 is selected to make metallic gasket 4 material.Because the anvil face of pressing anvil 1 is inclined-plane, in order to setting-up piece 4, its cross-sectional area can be made slightly larger than pressure anvil face cross-sectional area, and close up in pressing down anvil face.
With opposed anvils, pad 4 is depressed into thickness in advance and is about 40 μm, pad 4 can stay pressure anvil 1 anvil face impression.Utilize laser-beam drilling machine in the punching of pressure anvil 1 anvil face impression place, namely press between anvil 1 and pad 4 and define sample cavity 3, be namely placed on as the material of research object or material and apply high pressure in this sample cavity 3 and study.The sectional area of sample cavity 3 is about 300 μm.
Anvil 1, gasket seal 4 and support ring 2 will be pressed independently overall as one---to the object of top pressure anvil sample system, it is the diversified requirement in order to adapt to measurement function requirement, as pushed up the size at anvil inclination angle, table top inclination angle and size, the material of pressure anvil 1 and size, the material of pad 4 and size etc.For different research objects, test request all can change, owing to pressing anvil sample system to be independently overall to pushing up, just can be solved by the coordination adjustment of part each in this system, and need not again process or reequip the mechanical device of container, contribute to regularization and the versatile of high-pressure bottle, save experimental cost.
The applying of embodiment 3 compression-shear stress
Pressure-loaded adopts 4 symmetrically arranged screw thread pair mechanical load systems, forms by coordinating the loading bolt 8 that forms and load screw thread pair and cushion with the screwed hole on cavity seat or pressure head.After the relative position adjusting two pressure anvils 1, by screwing two groups of loading bolts 8, the thrust of the downward precession of bolt is relied on to make pressure anvil 1 near the sample come in compression sample chamber 3.Because pressure anvil 1 be inclined-plane, by inclined-plane can be decomposed into perpendicular to inclined-plane active force compression and be parallel to the shear stress on inclined-plane.The slippage of the elastic washer 10 of spring steel material simultaneously can increase shear force.Pressure size can press mark to determine by ruby.
Owing to not needing too high pressure when studying pressure and cutting effect, and sample in opposed anvils is very little, and therefore generally manual operation pressue device of the present invention can complete pressurization.If have higher requirement to pressure, also this compression system can be placed on hydraulic loading device and pressurize further.
Claims (6)
1. one kind can produce the anvil cell high pressure device of combined compression-shear loading, comprise pressue device system and anvil sample system is pressed to top, pressue device internal system is arranged on to top pressure anvil sample system, pressue device system comprises pressure head, cavity seat (9) and loading bolt (8), pressure head is arranged on cavity seat (9) top, by N number of loading bolt (8) be arranged symmetrically with, pressure head and cavity seat (9) are fixed together, N >=4, and pressurize by tightening loading bolt (8), pressure head is made up of termination (5) and stick harness (6), termination (5) is arranged on stick harness (6) top, stick harness (6) bottom is provided with a cavity, cavity seat (9) forms the cylindrical drum of cylinder guiding pair with the cylinder of stick harness (6), and pressure head and cavity seat (9) are assembled together by this cylinder guiding pair, it is characterized in that: two pressures anvil (1) be arranged symmetrically with are comprised to top pressure anvil sample system, support ring (2), metallic gasket (4), tungsten carbide base (7) and elastic washer (10), two pressures anvil (1) are arranged two respectively in support ring (2), a hole is provided with in the middle of metallic gasket (4), metallic gasket (4) is positioned between two pressures anvil (1), the hole of two pressures anvil (1) and metallic gasket (4) forms sample cavity (3), two pressures anvil (1) are separately fixed on tungsten carbide base (7), elastic washer (10) is arranged on support ring (2) outside of the pressure anvil (1) being positioned at bottom, the pressure anvil (1) being positioned at top is fixed on the cavity of stick harness (6) by tungsten carbide base (7), the pressure anvil (1) being positioned at bottom is fixed on cavity seat (9) bottom by tungsten carbide base (7),
Pressure anvil (1) is cone, the drift angle of cone cuts out an inclined-plane, this inclined-plane is the anvil face of pressure anvil (1), anvil face becomes α angle with horizontal plane, 0 ° of < α < 90 °, two pressure anvil (1) anvil faces of composition opposed anvils are relative, coaxially arranged, and anvil face is parallel to each other.
2. the anvil cell high pressure device that can produce combined compression-shear loading according to claim 1, is characterized in that: the material of pressure anvil (1) is single-crystal diamond, carborundum, zirconium dioxide, alundum (Al2O3), tungsten carbide or Nano diamond super-hard compound material.
3. the anvil cell high pressure device that can produce combined compression-shear loading according to claim 1, it is characterized in that: because the anvil face of pressure anvil (1) is inclined-plane, in order to fixing metal pad (4), its cross-sectional area can be made slightly larger than pressure anvil face cross-sectional area, and close up in pressing down anvil face.
4. the anvil cell high pressure device that can produce combined compression-shear loading according to claim 3, is characterized in that: the spring steel that metallic gasket (4) material is Inconel alloy 625, Inconel alloy 1750, hard stainless steel T301, phosphorus content are 1%, Pt metal, Mo, Ta or Re.
5. the anvil cell high pressure device that can produce combined compression-shear loading according to claim 1, is characterized in that: the material of elastic washer (10) is spring steel or rubber.
6. the anvil cell high pressure device that can produce combined compression-shear loading according to claim 1, it is characterized in that: a through hole is set on pressure head, arrange a bellmouth in cavity seat (9) bottom, through hole, bellmouth and pressure anvil (1) are positioned at same axis, are beneficial to printing opacity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310423510.5A CN103464056B (en) | 2013-09-17 | 2013-09-17 | Anvil cell high-pressure device capable of generating compression-shear combined loading |
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| CN201310423510.5A CN103464056B (en) | 2013-09-17 | 2013-09-17 | Anvil cell high-pressure device capable of generating compression-shear combined loading |
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| CN103464056B true CN103464056B (en) | 2015-06-24 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486578A (en) * | 2016-01-13 | 2016-04-13 | 中国科学院理化技术研究所 | Sample clamping device for shear force measurement at low temperature |
| CN106622034A (en) * | 2017-03-03 | 2017-05-10 | 郑州轻工业学院 | High-pressure technology for low-temperature polymerization and rapid non-crystallization of C60 |
| CN108220837A (en) * | 2018-01-19 | 2018-06-29 | 北京理工大学 | High-entropy alloy mismatch, which is cut, pulls out processing technology |
| CN108414361B (en) * | 2018-02-08 | 2020-08-25 | 中国工程物理研究院上海激光等离子体研究所 | Static high-pressure diamond anvil cell device suitable for laser dynamic loading experiment |
| CN108318328B (en) * | 2018-04-03 | 2023-04-18 | 中国民航大学 | Four-axis linkage pressurizing equipment based on diamond anvil cell press |
| CN108686583B (en) * | 2018-07-17 | 2023-10-20 | 北京中研环科科技有限公司 | Diamond press |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3061877A (en) * | 1959-11-05 | 1962-11-06 | Adamant Lab Proprietary Ltd | High-pressure die |
| CN2269915Y (en) * | 1995-08-24 | 1997-12-10 | 湖南银洲实业开发公司 | Filleted top hammer |
| CN101091895A (en) * | 2007-04-10 | 2007-12-26 | 四川大学 | New type equipment for producing super high pressure |
| CN103028348A (en) * | 2012-12-31 | 2013-04-10 | 吉林大学 | Vertical and rotating combined pressure type multi-anvil press |
| CN203507963U (en) * | 2013-09-17 | 2014-04-02 | 南京理工大学 | Anvil cell high-pressure device capable of generating pressing-shearing composite load |
-
2013
- 2013-09-17 CN CN201310423510.5A patent/CN103464056B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3061877A (en) * | 1959-11-05 | 1962-11-06 | Adamant Lab Proprietary Ltd | High-pressure die |
| CN2269915Y (en) * | 1995-08-24 | 1997-12-10 | 湖南银洲实业开发公司 | Filleted top hammer |
| CN101091895A (en) * | 2007-04-10 | 2007-12-26 | 四川大学 | New type equipment for producing super high pressure |
| CN103028348A (en) * | 2012-12-31 | 2013-04-10 | 吉林大学 | Vertical and rotating combined pressure type multi-anvil press |
| CN203507963U (en) * | 2013-09-17 | 2014-04-02 | 南京理工大学 | Anvil cell high-pressure device capable of generating pressing-shearing composite load |
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