CN104310400A - Boron carbide neutron absorber - Google Patents
Boron carbide neutron absorber Download PDFInfo
- Publication number
- CN104310400A CN104310400A CN201410525417.XA CN201410525417A CN104310400A CN 104310400 A CN104310400 A CN 104310400A CN 201410525417 A CN201410525417 A CN 201410525417A CN 104310400 A CN104310400 A CN 104310400A
- Authority
- CN
- China
- Prior art keywords
- boron carbide
- norbide
- neutron absorber
- neutron
- colloid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052580 B4C Inorganic materials 0.000 title claims abstract description 64
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 57
- 239000000843 powder Substances 0.000 claims abstract description 82
- 239000000084 colloidal system Substances 0.000 claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001257 hydrogen Substances 0.000 abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 229910010293 ceramic material Inorganic materials 0.000 abstract 2
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 12
- 241000720974 Protium Species 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- 238000007493 shaping process Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 238000003756 stirring Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 229910052688 Gadolinium Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000001956 neutron scattering Methods 0.000 description 2
- 238000010433 powder painting Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
The invention relates to a neutron absorber for absorbing stray neutrons, in particular to a boron carbide absorber which is prepared by raw materials with low cost and wide sources, does not influence the detection of a detector and is used for absorbing stray neutrons in a radial neutron collimator. The raw materials of the boron carbide neutron absorber mainly comprise boron carbide powder, colloid and a curing agent, wherein the content ratio of the colloid to the curing agent is 5 to 2, and the content ratio of the colloid to the boron carbide powder is 1 to (19-4). The boron carbide neutron absorber has easily-available raw materials, can solve the problem that the neutron absorption is influenced by hydrogen element due to the formula, has low cost, overcomes the defects that the used boron carbide ceramic material at the present stage is expensive and is difficult to obtain, can achieve the effect equal to or better than that of the boron carbide ceramic material, can be widely applied and can obtain long-term economic benefit.
Description
Technical field
The present invention relates to a kind of neutron absorber for absorbing stray neutron, the cartridge that espespecially a kind of, originate wide raw material low by cost is made also realizes not affecting the detection of detector and in radial neutron howitzer, absorbing a kind of norbide neutron absorber of stray neutron target.
Background technology
Neutron and X-ray are all the powerful measure that the mankind explore material microstructure, neutron is not charged, there is magnetic moment, penetrance is strong, light element can be differentiated, isotropic substance and neighbour's element, and have the nondestructive feature to sample, therefore neutron not only can explore the static microtexture of material, its kinetic mechanism can also be studied, at present, Neutron scattering technology is at biology, life, the research fields such as medicine play the effect that X-ray cannot replace, Neutron scattering technology carries out in neutron spectrometer, for the raising of the performance perameters such as the normal operation of neutron spectrometer and the resolving power of spectrometer, neutron howitzer as one of its key part plays an important role.
One of Main Function of radial neutron howitzer is exactly the loss of the neutron being reduced by collimator internal cavity, and the method realizing this effect vacuumizes or pass in cavity certain atmosphere surrounding (helium or argon gas) at cavity; Its another main method utilizes the neutron absorber be attached on collimator inwall to absorb background neutron, therefore to ensure that the vacuum deformation of cavity can't impact the attachment of neutron absorber, and inserted sheet can not be caused to depart from physical plane, stop effective neutron.
Conventional neutron absorber material comprises boron, gadolinium and cadmium etc., because the position sensitive detector of majority is more weak for the separating capacity of neutron and gamma ray, the nuclear reaction of neutron and gadolinium element is mainly n-gamma reaction, absorb neutron and release gamma ray, be unfavorable for the neutron detection of back-end location sensitive detector, and the nuclear reaction of neutron and boron is mainly n-alpha reaction, a lot of unfavorable factors can't be brought to the detection of detector, boron carbide material therefore can be selected as the neutron absorber material of radial neutron howitzer.
Conventional neutron absorber has boron carbide ceramics plate, norbide-aluminum composite plate, boron carbide powder colloid mixture is cold-pressed into template and boron carbide powder painting mode etc., but, boron carbide powder colloid mixture is cold-pressed into template and contains more epoxies colloid, form containing more hydrogen and oxygen element, cause spuious scattering; The mode of boron carbide powder painting needs to introduce epoxies colloid equally, and thickness is restricted, and easily loses efficacy by irradiation; Aluminium base boron carbide composite material, boron carbide ceramics material Weldability are still to be tested, the norbide content simultaneously adulterated is few, same restricted in thickness requirement, and present stage such material price costly, and the neutron absorber that fully can absorb stray neutron in collimator inside of the batch production that generally needs from external import, therefore need a kind of price appropriateness, is convenient to.
Summary of the invention
For solving the problem, the present invention is intended to openly a kind of neutron absorber for absorbing stray neutron, and the cartridge that espespecially a kind of, originate wide raw material low by cost is made also realizes not affecting the detection of detector and in radial neutron howitzer, absorbing a kind of norbide neutron absorber of stray neutron target.
For achieving the above object, the technical solution used in the present invention is: a kind of norbide neutron absorber, the raw material of described norbide neutron absorber mainly comprises boron carbide powder, colloid and solidifying agent, described colloid and the content ratio of solidifying agent are 5:2, and the ratio range of colloidal content and boron carbide powder content is 1:19-1:4.
Described norbide neutron absorber mainly comprises 70-85 part boron carbide powder, 4.5-17.5 part colloid and 1.8-7 part solidifying agent.
Have coarse grain powder in described boron carbide powder, the size range of coarse grain powder is 450-500 μm.
Have particulate powders in described boron carbide powder, the size range of particulate powders is 60-120 μm.
Described boron carbide powder to be mixed with the particulate powders of 15%-22% content by the coarse grain powder of 78%-85% content and forms.
Described norbide neutron absorber can casting be square, or be spherical shape.
Prepare a kind of norbide neutron absorber, the content ratio of described boron carbide powder, colloid and solidifying agent is 45:5:2, and the content ratio that is thick, particulate powders wherein in boron carbide powder is 4:1.
Norbide neutron absorber described in preparation comprises 81 parts of boron carbide powders, 9 parts of colloids and 3.6 parts of solidifying agent, and the coarse grain powder wherein in boron carbide powder is 64.8 parts, and particulate powders is 16.2 parts.
Beneficial effect of the present invention is: norbide neutron absorber of the present invention is mainly used in being attached to radial neutron howitzer inwall to absorb stray neutron, its raw material mainly includes boron carbide powder, colloid and solidifying agent, overcome the defect that too much protium affects neutron-absorbing, make can obtain the abundant stop of neutron absorber and absorb during the scattering of neutrons of collimator inside, the present invention selects to adopt 4.5-17.5 part colloid mixing 70-85 part boron carbide powder, both the composition of protium had been controlled, the thickness of norbide neutron absorber can be made again to reach controllability effect, both can reach the object not affecting neutron-absorbing, colloid and boron carbide powder can be made again to stir, again because the collocation of norbide coarse grain powder and norbide particulate powders controls, protium is reduced, form because adopting the coarse grained boron carbide powder of 78%-82% to mix with the fine grain boron carbide powder of 18%-22%, the colloid of boron carbide powder and low levels is made fully to stir rightly, while being conducive to stirring, more can reach effect shaping smoothly.
The raw material of norbide neutron absorber of the present invention easily obtains, the formula adopted solves the problem that protium affects neutron-absorbing, and cost reduces greatly, overcome the boron carbide ceramics material price of present stage use costly, the shortcoming of the more difficult acquisition of raw material, and the norbide neutron absorber of gained of the present invention can reach effect that boron carbide ceramics material can reach or reach better effect, the neutron-absorbing body thickness prepared as boron carbide ceramics material is generally 4mm, and the neutron-absorbing body thickness of formula preparation of the present invention is generally 8mm, but cost of material of the present invention is boron carbide ceramics material 1/10th, therefore the present invention a kind ofly can be mass widespread use and can bring the neutron absorber of long-term economic benefit.
Embodiment
The following detailed description of the specific embodiment of the present invention:
embodiment one
A kind of norbide neutron absorber, the raw material of described norbide neutron absorber mainly comprises boron carbide powder, colloid and solidifying agent, norbide neutron absorber can injection moulding be square or other shapes, the ratio of described colloidal content and boron carbide powder content is 1:9, the ratio of colloidal content and curing agent content is 5:2, described norbide neutron absorber mainly comprises 81 parts of boron carbide powders and 9 parts of colloids, and 3.6 parts of solidifying agent, the unit forming colloid have more hydrogen and oxygen element, too much protium affects neutron-absorbing, cause abundant stop or the absorption that neutron absorber during the scattering of neutrons of collimator inside, cannot be obtained, described boron carbide powder to be mixed with the particulate powders of 20% content by the coarse grain powder of 80% content and forms, comprise 64.8 parts of norbide coarse grain powder and 16.2 parts of norbide particulate powders, the particle of boron carbide powder is thinner, need the colloid for mix and blend more, protium is directly caused to increase, but the particle of boron carbide powder is thicker, the degree stirred with colloid is more weak, thus shaping norbide neutron absorber effect is bad, the grain thickness of boron carbide powder controlled well can decline for making colloid amount, protium reduces, the size range of the coarse grain powder in described boron carbide powder is 500 μm, the size range of particulate powders is 100 μm, when preparing norbide neutron absorber, cartridge is prepared by described composition ratio, and control shaping absorbed thickness as required, if thickness can be 8mm, colloid can select epoxy resin E51 type or epoxy resin E44 type or other colloids, described colloid and norbide thick, the content of particulate powders had both controlled the composition of protium, the molding thickness of norbide neutron absorber can be made again to reach required effect, make the effect that can reach efficient absorption neutron in neutron howitzer inside, the colloidal content of appropriateness both can reach the object not affecting neutron-absorbing, colloid and boron carbide powder can be made again to stir, reach effect shaping smoothly.
embodiment two
A kind of norbide neutron absorber, the raw material of described norbide neutron absorber mainly comprises boron carbide powder, colloid and solidifying agent, norbide neutron absorber can be square or other shapes, the ratio of described colloidal content and boron carbide powder content is 1:4, the ratio of colloidal content and curing agent content is 5:2, described norbide neutron absorber mainly comprises 70 parts of boron carbide powders and 17.5 parts of colloids, and 7 parts of solidifying agent, the unit forming colloid have more hydrogen and oxygen element, too much protium affects neutron-absorbing, cause abundant stop or the absorption that neutron absorber during the scattering of neutrons of collimator inside, cannot be obtained, described boron carbide powder to be mixed with the particulate powders of 22% content by the coarse grain powder of 78% content and forms, comprise 54.6 parts of norbide coarse grain powder and 15.4 parts of norbide particulate powders, the particle of boron carbide powder is thinner, need the colloid for mix and blend more, protium is directly caused to increase, but the particle of boron carbide powder is thicker, the degree stirred with colloid is more weak, thus shaping norbide neutron absorber effect is bad, the grain thickness of boron carbide powder controlled well can decline for making colloid amount, protium reduces, the size range of the coarse grain powder in described boron carbide powder is 480 μm, the size range of particulate powders is 100 μm, when preparing norbide neutron absorber, cartridge is prepared by described composition ratio, and control shaping absorbed thickness as required, if thickness can be 8mm, colloid can select epoxy resin E51 type or epoxy resin E44 type or other colloids, described colloid and norbide thick, the content of particulate powders had both controlled the composition of protium, the molding thickness of norbide neutron absorber can be made again to reach required effect, make the effect that can reach efficient absorption neutron in neutron howitzer inside, the colloidal content of appropriateness both can reach the object not affecting neutron-absorbing, colloid and boron carbide powder can be made again to stir, reach effect shaping smoothly.
The above, it is only preferred embodiment of the present invention, not technical scope of the present invention is imposed any restrictions, the technician of the industry, under the inspiration of the technical program, some distortion and amendment can be made, every above embodiment is done according to technical spirit of the present invention any amendment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a norbide neutron absorber, it is characterized in that: the raw material of described norbide neutron absorber mainly comprises boron carbide powder, colloid and solidifying agent, described colloid and the content ratio of solidifying agent are 5:2, and the ratio range of colloidal content and boron carbide powder content is 1:19-1:4.
2. a kind of norbide neutron absorber according to claim 1, is characterized in that: described norbide neutron absorber mainly comprises 70-85 part boron carbide powder, 4.5-17.5 part colloid and 1.8-7 part solidifying agent.
3. a kind of norbide neutron absorber according to claim 1, is characterized in that: have coarse grain powder in described boron carbide powder, and the size range of coarse grain powder is 450-500 μm.
4. a kind of norbide neutron absorber according to claim 1, is characterized in that: have particulate powders in described boron carbide powder, and the size range of particulate powders is 60-120 μm.
5. a kind of norbide neutron absorber according to claim 1 or 3 or 4, is characterized in that: described boron carbide powder to be mixed with the particulate powders of 15%-22% content by the coarse grain powder of 78%-85% content and forms.
6. a kind of norbide neutron absorber according to claim 1, is characterized in that: described norbide neutron absorber can casting be square, or be spherical shape.
7. use a kind of norbide neutron absorber described in claim 1 to prepare a kind of norbide neutron absorber, it is characterized in that: the content ratio of described boron carbide powder, colloid and solidifying agent is 45:5:2, the content ratio that is thick, particulate powders wherein in boron carbide powder is 4:1.
8. a kind of norbide neutron absorber according to claim 7, it is characterized in that: the norbide neutron absorber described in preparation comprises 81 parts of boron carbide powders, 9 parts of colloids and 3.6 parts of solidifying agent, and the coarse grain powder wherein in boron carbide powder is 64.8 parts, and particulate powders is 16.2 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410525417.XA CN104310400B (en) | 2014-10-09 | 2014-10-09 | A kind of boron carbide neutron absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410525417.XA CN104310400B (en) | 2014-10-09 | 2014-10-09 | A kind of boron carbide neutron absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104310400A true CN104310400A (en) | 2015-01-28 |
| CN104310400B CN104310400B (en) | 2016-06-29 |
Family
ID=52365754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410525417.XA Expired - Fee Related CN104310400B (en) | 2014-10-09 | 2014-10-09 | A kind of boron carbide neutron absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104310400B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845191A (en) * | 2016-05-06 | 2016-08-10 | 东莞中子科学中心 | Plug-in shell structure used for neutron collimator |
| CN108333192A (en) * | 2018-01-25 | 2018-07-27 | 中国科学院高能物理研究所 | A kind of coarse collimator in rear end for neutron scattering |
| CN108750983A (en) * | 2018-06-07 | 2018-11-06 | 东莞理工学院 | A kind of neutron beam window maintenance platform hanging apparatus and its hanging method to work under the radiation |
| CN108806818A (en) * | 2018-04-17 | 2018-11-13 | 东莞理工学院 | A kind of four knife diaphragms of adjustable neutron flow |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198322A (en) * | 1977-12-01 | 1980-04-15 | The Carborundum Company | One-step curing method for manufacture of neutron absorbing plates |
| US4213883A (en) * | 1977-12-30 | 1980-07-22 | The Carborundum Company | Method for manufacture of neutron absorbing articles |
| CN102214488A (en) * | 2011-05-31 | 2011-10-12 | 航天材料及工艺研究所 | Boron-carbide-containing graphite absorber ball and preparation process thereof |
| CN102485810A (en) * | 2009-11-30 | 2012-06-06 | 北京市射线应用研究中心 | Dual-component low-temperature curing type putty for mixed nuclear radiation environment |
-
2014
- 2014-10-09 CN CN201410525417.XA patent/CN104310400B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198322A (en) * | 1977-12-01 | 1980-04-15 | The Carborundum Company | One-step curing method for manufacture of neutron absorbing plates |
| US4213883A (en) * | 1977-12-30 | 1980-07-22 | The Carborundum Company | Method for manufacture of neutron absorbing articles |
| CN102485810A (en) * | 2009-11-30 | 2012-06-06 | 北京市射线应用研究中心 | Dual-component low-temperature curing type putty for mixed nuclear radiation environment |
| CN102214488A (en) * | 2011-05-31 | 2011-10-12 | 航天材料及工艺研究所 | Boron-carbide-containing graphite absorber ball and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 柯于斌等: "粘结碳化硼材料中子屏蔽性能及制备工艺研究", 《材料科学与工艺》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845191A (en) * | 2016-05-06 | 2016-08-10 | 东莞中子科学中心 | Plug-in shell structure used for neutron collimator |
| CN108333192A (en) * | 2018-01-25 | 2018-07-27 | 中国科学院高能物理研究所 | A kind of coarse collimator in rear end for neutron scattering |
| CN108806818A (en) * | 2018-04-17 | 2018-11-13 | 东莞理工学院 | A kind of four knife diaphragms of adjustable neutron flow |
| CN108750983A (en) * | 2018-06-07 | 2018-11-06 | 东莞理工学院 | A kind of neutron beam window maintenance platform hanging apparatus and its hanging method to work under the radiation |
| CN108750983B (en) * | 2018-06-07 | 2024-04-26 | 东莞理工学院 | Neutron beam window maintenance platform lifting device working under radiation and lifting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104310400B (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104310400A (en) | Boron carbide neutron absorber | |
| US8243871B2 (en) | Spherical fuel element and production thereof for gas-cooled high temperature pebble bed nuclear reactors (HTR) | |
| CN101696316B (en) | Method for preparing radiation protection materials | |
| CN105200274A (en) | Neutron absorbing material and preparation method thereof | |
| CN113201180B (en) | Neutron and gamma ray composite shielding material and preparation method thereof | |
| Lebreton et al. | Fabrication and characterization of americium, neptunium and curium bearing MOX fuels obtained by powder metallurgy process | |
| CN107555850B (en) | Composite material for neutron radiation protection and preparation method and application thereof | |
| CN102757223A (en) | Rare-earth boride/boron carbide composite neutron absorption material and preparation method thereof | |
| US20180151261A1 (en) | Sintered nuclear fuel pellet and manufacturing method thereof | |
| CN104310399B (en) | A kind of norbide neutron-absorbing body processing technology | |
| US8801977B2 (en) | Enhanced alpha particle emitter | |
| CN115215666A (en) | Boron nitride/high-entropy ceramic oxide and composite coating for shielding neutrons and gamma rays and preparation method thereof | |
| CN103691956A (en) | Preparation technology for annular thin-walled Al-NpO2 dispersion pellets | |
| Guo et al. | Neutron adsorption performance of Dy2TiO5 materials obtained from powders synthesized by the molten salt method | |
| CN103295770B (en) | A kind of preparation method of compoiste adhering permanent magnet | |
| RU2007137747A (en) | NUCLEAR URANIUM-GADOLINIUM HIGH BURNER FUEL BASED ON URANIUM DIOXIDE AND METHOD FOR ITS PRODUCTION (OPTIONS) | |
| JP7082033B2 (en) | Ferrite powder for bonded magnets and its manufacturing method | |
| Yusof et al. | Study of the effect of boron carbide content in concrete as radiation shielding application | |
| CN112309663A (en) | Permanent magnetic ferrite magnetic ring magnetic powder and preparation method thereof | |
| CN117848820A (en) | Standard sample of radioactive uranium ore sorting and preparation method thereof | |
| CN107479086B (en) | Preparation method of optical fiber embedded high-energy neutron conversion screen | |
| CN113125311B (en) | Detection method of MOX mixed particles | |
| Advocat et al. | Fabrication of 239/238Pu-zirconolite ceramic pellets by natural sintering | |
| Naestren et al. | Synthesis route for the safe production of targets for transmutation of plutonium and minor actinides | |
| CN117303902A (en) | High-entropy garnet-based ceramic solidified body and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN NEUTRON SCIENCE CENTER ZOU JIANJUN SUN ZH Free format text: FORMER OWNER: ZOU JIANJUN SUN ZHENZHONG HE LUNHUA KANG LE CHEN JIE LU HUAILE XU CHUBIN Effective date: 20150619 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150619 Address after: 523000 Guangdong province Dongguan City Songshan Lake Science and Technology Industrial Park University Road No. 1 Applicant after: Dongguan University of technology Applicant after: DONGGUAN NEUTRON SCIENCE CENTER Applicant after: Zou Jianjun Applicant after: Sun Zhenzhong Applicant after: He Lunhua Applicant after: Kang Le Applicant after: Chen Jie Applicant after: Lu Huaile Applicant after: Xu Chubin Address before: 523000 Guangdong province Dongguan City Songshan Lake Science and Technology Industrial Park University Road No. 1 Applicant before: Dongguan University of technology Applicant before: Zou Jianjun Applicant before: Sun Zhenzhong Applicant before: He Lunhua Applicant before: Kang Le Applicant before: Chen Jie Applicant before: Lu Huaile Applicant before: Xu Chubin |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20191009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |