CN109825743A - A kind of application method of structure-function integration neutron absorber material - Google Patents
A kind of application method of structure-function integration neutron absorber material Download PDFInfo
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- CN109825743A CN109825743A CN201910212574.8A CN201910212574A CN109825743A CN 109825743 A CN109825743 A CN 109825743A CN 201910212574 A CN201910212574 A CN 201910212574A CN 109825743 A CN109825743 A CN 109825743A
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- neutron absorber
- absorber material
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Abstract
The present invention provides a kind of application method of structure-function integration neutron absorber material, and ingredient is nuclear leve boron carbide, aluminium alloy, nano-oxide.The present invention is prepared using powder metallurgical technique, and the composite material prepared is homogeneous material, is distributed in aluminium alloy to nano-oxide and boron carbide energy even dispersion.Composite board with excellent mechanical behavior under high temperature, thermal conductivity and impact flexibility can be prepared using secondary operation techniques such as hot isostatic pressing, hot extrusion, hot rolling, hot forging pressures, mechanics, thermal property under high temperature are stablized, it can be used as the neutron absorber material of criticality safety control, storage density with higher is applied to warship pileradiation protective materials, the storage of civilian nuclear reactor spentnuclear fuel wet process and Dry storage material.
Description
Technical field
The present invention relates to neutron absorber material fields, the especially application method of structure-function integration neutron absorber material
And field.
Background technique
In nuclear environment, aluminum-based boron carbide is a kind of excellent neutron absorber material, can be applied to warship pileradiation
In protection field, the storage of civilian nuclear reactor spentnuclear fuel wet process and Dry storage field.Aluminum-based boron carbide material is a kind of ceramics
Particles reiforced metal-base composition, 10B in boron carbide can absorption capture thermal neutron, effectively shield neutron, it is significant
Advantage is good corrosion resistance, Flouride-resistani acid phesphatase excellent in stability, irradiated fuel store density height etc., has good economy and safety
Property.However existing all kinds of aluminum-based boron carbides have poor high-temperature mechanics and high temperature thermal property, B4C particle is in aluminium alloy base
Distributing homogeneity is poor in body, and material density is not excellent enough, and is difficult to function simultaneously as structural wood in harsh nuclear environment
Material and functional material.
China unload every year under spentnuclear fuel increasing fast, the cumulant of the following many decades spentnuclear fuel will continue quickly to increase
It is long, during Dry storage and these spentnuclear fuels of transport, a large amount of structure-function integration neutron absorber material is needed, with
Ensure the criticality safety under various accident conditions, higher requirement is proposed to all kinds of high-temperature behaviors of neutron absorber material.
Summary of the invention
The purpose of the present invention is to provide a kind of neutron absorber plate of high-compactness, with excellent mechanical behavior under high temperature and
High temperature thermal property, can meet spentnuclear fuel dry method at the technical issues of solving existing aluminum-based boron carbide material poor high-temperature behavior
Storage applications.
Technical scheme is as follows:
A kind of application method of structure-function integration neutron absorber material, which is characterized in that step are as follows:
S1 uses 100 ~ 400rpm/min of revolving speed ball mill uniformly to mix raw material according to the ratio, the raw material are as follows: granularity is
200nm ~ 60 μm aluminium alloy, granularity are 200nm ~ 40 μm nuclear leve boron carbide；Granularity is 10nm ~ 1000nm nano-oxide；
Mixed powder is fitted into mantle by S2, is evacuated to vacuum degree better than 10-1Pa；
S3 carries out molding or isostatic cool pressing to mantle, and green body is made in mixed-powder；
Composite body is carried out hot pressed sintering, hot isostatic pressing, hot forging pressure or hot extrusion technique and handled by S4, is obtained highly dense
The aluminum-based boron carbide neutron absorber material of degree；
S5 obtains the neutron-absorbing plate of high-compactness using hot rolling；
S6 carries out homogenizing annealing, ageing treatment to neutron absorber plate material.
The proportion of the raw material are as follows: aluminium alloy quality score is 60% ~ 92%, and the B4C mass fraction is 5% ~ 40%；It receives
Rice oxide mass score is 0 ~ 20%,
The aluminium alloy refers to that 1 line aluminium alloy commercially, 2 line aluminium alloys, 3 line aluminium alloys, 4 line aluminium alloys, 5 are that aluminium closes
Gold, 6 line aluminium alloys.
The nano-oxide refers to nano aluminium oxide, nano yttrium oxide or nano zircite.
The neutron-absorbing plate is used as pileradiation protective materials.
The neutron-absorbing plate is used as in the storing of spentnuclear fuel dry method in the structure-function integration of criticality safety control
Sub- absorbing material realizes the high density storage and transport of spentnuclear fuel.
The present invention prepares neutron absorber material using powder metallurgical technique, and nano-oxide and boron carbide are equal in the material
It is distributed in aluminium alloy to even disperse；It can be made using secondary operation techniques such as hot isostatic pressing, hot extrusion, hot rolling, hot forging pressures
For the composite board for providing excellent mechanical behavior under high temperature, thermal conductivity and impact flexibility, the mechanics, thermal property under high temperature are steady
It is fixed, it can be used as.
Criticality safety control during neutron absorber material of the present invention is applied to pileradiation protective materials, spentnuclear fuel dry method stores and transports
Field processed, consistency are not less than 99%, have excellent tensile property, thermal conductivity and elongation after fracture service performance at high temperature
Stablize, realizes the high density storage and transport of spentnuclear fuel.Neutron absorber material of the invention realizes structure-function integration,
The structure for simplifying neutron absorber material component, reduces manufacturing procedure, reduces processing cost.
Detailed description of the invention
The macro morphology of Fig. 1 material of the present invention.
The microscopic structure of Fig. 2 material of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
Embodiment 1
A kind of application method of structure-function integration neutron absorber material of the present invention, step are as follows:
S1 uses 100 ~ 400rpm/min of revolving speed ball mill uniformly to mix raw material according to the ratio, the raw material are as follows: granularity is
200nm ~ 60 μm aluminium alloy, granularity are 200nm ~ 40 μm nuclear leve boron carbide；Granularity is 10nm ~ 1000nm nano-oxide；
Mixed powder is fitted into mantle by S2, is evacuated to vacuum degree better than 10-1Pa；
S3 carries out molding or isostatic cool pressing to mantle, and green body is made in mixed-powder；
Composite body is carried out hot pressed sintering, hot isostatic pressing, hot forging pressure or hot extrusion technique and handled by S4, is obtained highly dense
The aluminum-based boron carbide neutron absorber material of degree；
S5 obtains the neutron-absorbing plate of high-compactness using hot rolling；
S6 carries out homogenizing annealing, ageing treatment to neutron absorber plate material.
Embodiment 2
A kind of proportion of the raw material of structure-function integration neutron absorber material of the present invention are as follows: aluminium alloy quality score is 60% ~
92%, the B4C mass fraction is 5% ~ 40%；Nano-oxide mass fraction is 0 ~ 20%.
Aluminium alloy, refer to business 1 line aluminium alloy, 2 line aluminium alloys, 3 line aluminium alloys, 4 line aluminium alloys, 5 line aluminium alloys,
6 line aluminium alloys.Nano-oxide includes nano aluminium oxide, nano yttrium oxide or nano zircite.
Embodiment 3
In conjunction with the embodiments 1,2 and 3, a kind of structure-function integration neutron absorber material of the present invention is used as pileradiation and protects
Material.
Embodiment 4
In conjunction with the embodiments 1,2 and 3, a kind of structure-function integration neutron absorber material of the present invention is used as spentnuclear fuel dry method and stores and transports
The neutron absorber material of the structure-function integration of middle criticality safety control, realizes the high density storage and transport of spentnuclear fuel.
Embodiment 5
As shown in Fig. 2, a kind of structure-function integration neutron absorber material, preparation step are as follows:
(1) powder needed for taking out according to a certain ratio is uniformly mixed using ball mill (100 ~ 400rpm/min of revolving speed), will be mixed
Powder is fitted into mantle, is evacuated to vacuum degree better than 10-1Pa；
(2) molding or isostatic cool pressing are carried out to the mantle in step (1), green body is made in mixed-powder；
(3) composite body is carried out hot pressed sintering, hot isostatic pressing, hot forging pressure or hot extrusion technique to handle, is obtained highly dense
The aluminum-based boron carbide neutron absorber material of degree；
(4) the structure-function integration neutron-absorbing plate of high-compactness is obtained using hot rolling.
(5) homogenizing annealing, ageing treatment are carried out to structure-function integration neutron-absorbing plate.
The present invention provides structure-function integration neutron-absorbing plate, and plate thickness is continuously adjustable, inhales than traditional neutron
Receiving material has higher irradiated fuel store density.
Obviously, as known by the technical knowledge, the present invention can pass through other essence without departing from its spirit or essential feature
Embodiment is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, and are not only
's.All changes within the scope of the invention or within the scope equivalent to the present invention are within the scope of protection of this application.
Claims (6)
1. a kind of application method of structure-function integration neutron absorber material, which is characterized in that step are as follows:
S1 uses 100 ~ 400rpm/min of revolving speed ball mill uniformly to mix raw material according to the ratio, the raw material are as follows: granularity is
200nm ~ 60 μm aluminium alloy, granularity are 200nm ~ 40 μm nuclear leve boron carbide；Granularity is 10nm ~ 1000nm nano-oxide；
Mixed powder is fitted into mantle by S2, is evacuated to vacuum degree better than 10-1Pa；
S3 carries out molding or isostatic cool pressing to mantle, and green body is made in mixed-powder；
Composite body is carried out hot pressed sintering, hot isostatic pressing, hot forging pressure or hot extrusion technique and handled by S4, is obtained highly dense
The aluminum-based boron carbide neutron absorber material of degree；
S5 obtains the neutron-absorbing plate of high-compactness using hot rolling；
S6 carries out homogenizing annealing, ageing treatment to neutron absorber plate material.
2. a kind of application method of structure-function integration neutron absorber material as described in claim 1, which is characterized in that institute
State the proportion of raw material are as follows: aluminium alloy quality score is 60% ~ 92%, the B4C mass fraction is 5% ~ 40%；Nano oxidized substance
Measuring score is 0 ~ 20%.
3. a kind of application method of structure-function integration neutron absorber material as described in claim 1, which is characterized in that institute
The aluminium alloy stated refers to 1 line aluminium alloy, 2 line aluminium alloys, 3 line aluminium alloys, 4 line aluminium alloys, 5 line aluminium alloys, 6 systems of business
Aluminium alloy.
4. a kind of application method of structure-function integration neutron absorber material as described in claim 1, which is characterized in that institute
The nano-oxide stated refers to nano aluminium oxide, nano yttrium oxide or nano zircite.
5. a kind of application method of structure-function integration neutron absorber material as described in claim 1, which is characterized in that institute
Neutron-absorbing plate is stated as pileradiation protective materials.
6. a kind of application method of structure-function integration neutron absorber material as described in claim 1, which is characterized in that institute
Neutron absorber material of the neutron-absorbing plate as the structure-function integration of criticality safety control in the storing of spentnuclear fuel dry method is stated,
Realize the high density storage and transport of spentnuclear fuel.
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Cited By (4)
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| CN111593218A (en) * | 2020-05-12 | 2020-08-28 | 大连理工大学 | Micro-nano particle reinforced aluminum-based composite material and preparation method thereof |
| CN112195357A (en) * | 2020-09-30 | 2021-01-08 | 季华实验室 | Neutron absorbing material and preparation method thereof |
| CN114351010A (en) * | 2021-12-31 | 2022-04-15 | 清华大学深圳国际研究生院 | Aluminum-based boron carbide composite material and preparation method and application thereof |
| CN114959410A (en) * | 2022-06-10 | 2022-08-30 | 季华实验室 | Nano-alumina-reinforced aluminum-based boron carbide, preparation method thereof and neutron absorbing material |
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| CN114959410A (en) * | 2022-06-10 | 2022-08-30 | 季华实验室 | Nano-alumina-reinforced aluminum-based boron carbide, preparation method thereof and neutron absorbing material |
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