CN101740151B - Gel-casting method of Al2O3-B4C material - Google Patents
Gel-casting method of Al2O3-B4C material Download PDFInfo
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- CN101740151B CN101740151B CN200910263466XA CN200910263466A CN101740151B CN 101740151 B CN101740151 B CN 101740151B CN 200910263466X A CN200910263466X A CN 200910263466XA CN 200910263466 A CN200910263466 A CN 200910263466A CN 101740151 B CN101740151 B CN 101740151B
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- slurry
- powder
- al2o3
- ball
- deionized water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Compositions Of Oxide Ceramics (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a gel-casting method of an Al2O3-B4C material which belongs to nuclear fuel and is used for a pressurized water reactor in a nuclear power station. The method comprises the steps of: mixing N-hydroxymethyl acrylamide, methylenebisacrylamide and ammonium polyacrylate with deionized water to prepare a premix liquid; adding Al2O3 powder, B4C powder and the premix liquid in a ball milling tank to be ball-milled and dispersed to prepare a slurry with solid phase content of not less than 50vol percent and viscosity of not more than 1Pa.s; adding ammonium persulfate and tetramethyl ethylene diamine in the slurry, and uniformly mixing; and pouring the uniformly mixed slurry into a die, completely solidifying the slurry, and removing the die to obtain a green Al2O3-B4C material. The prepared green Al2O3-B4C material has uniform density, organic matter content less than 5wt% and bending strength more than 15MPa, can undergo machining, accurately controls the size, and reduces the machining allowance of a sintering body to be minimum.
Description
Technical field
The invention belongs to nuclear fuel and material preparation method, be specifically related to a kind of Al that is used for the nuclear power station presurized water reactor
2O
3-B
4The preparation method of C burnable poison stupalith.
Background technology
Al
2O
3-B
4The many forms with sintered ceramic components of C are used in and make the neutron absorbing material in the presurized water reactor, its objective is to flatten initial loading stockpile core distribute power, prolong the phase in fuel longevity.Adopt dry method powder batch mixing, mold pressing or heat pressing process to prepare Al both at home and abroad
2O
3-B
4The C ceramic component is like the disclosed " Al of 1993 the 5th phases " Nuclear Power Engineering " 437-439 page or leaf
2O
3-B
4The development of C disperse ceramic pellet ", the 18th phase of nineteen eighty-three " the Journal of Materials Science " disclosed " SinteringAl of 669-677 page or leaf
2O
3-B
4C Ceramics ", adopt mold pressing or heat pressing process to produce Al
2O
3-B
4C disperse ceramic component, its defective is: adopt mold pressing or heat pressing process to produce Al
2O
3-B
4C disperse ceramic component, mould take high, and production efficiency is low, and process redundancy is big behind the product, and dimensional accuracy can not guarantee.
Summary of the invention
The objective of the invention is to: a kind of Al is provided
2O
3-B
4The notes of the C material type method of congealing into, this method can overcome Al
2O
3-B
4It is high to adopt mold pressing or heat pressing process to have the mould expense in the C material preparation, and production efficiency is low, and process redundancy is big behind the product, and dimensional accuracy such as can not guarantee at shortcoming.
Technical scheme of the present invention is following:
A kind of Al
2O
3-B
4The notes of the C material type method of congealing into, step is:
The first step; With organic monomer N hydroxymethyl acrylamide, crosslinking chemical subunit bisacrylamide and spreading agent ammonium polyacrylate and the mixed premixed liquid of preparing of deionized water; Wherein the deionized water consumption is 100ml, and said organic monomer and dosage of crosslinking agent are 20~50: 1 with the weight ratio of gram metering; The consumption of spreading agent ammonium polyacrylate is 3~8 grams;
Step 2 adds Al in ball grinder
2O
3Powder, B
4C powder and abrading-ball add the premixed liquid of preparation wherein, and Ball milling 2~6 hours is prepared the slurry of solid load>=50vol%, viscosity≤1Pas;
Step 3 adds the initiator ammonium persulfate of 0.5~2ml in the slurry, and the catalyzer tetramethylethylenediamine of 0.2~1ml mixes;
Step 4 in mould, left standstill the slurry perfusion that mixes 30 minutes under the room temperature, slurry solidifies fully, sloughs mould, obtains Al
2O
3-B
4C material green compact.
Additional technical feature is: used Al in the step 2
2O
3Powder and B
4The part by weight of C powder is 10~50: 1.
Effect of the present invention is: according to the Al of the inventive method preparation
2O
3-B
4C material green compact, it is even to have a blank density, and relative density reaches 55%~65%; Organic content<5wt%, bending strength>15MPa, B
4Advantages such as C is evenly distributed, first base can stand machining, and size is accurately controlled, and drops to the process redundancy of sintered body minimum.
Embodiment
Embodiment 1
1. in the 100ml deionized water, add N hydroxymethyl acrylamide 10g, subunit bisacrylamide 0.5g, ammonium polyacrylate 3g prepares premixed liquid; Wherein: the weight ratio of N hydroxymethyl acrylamide and subunit bisacrylamide is 20: 1;
2. in ball grinder, add 500gAl
2O
3Ball, 500gAl
2O
3Powder, 50g B
4The C powder adds the premixed liquid of preparing wherein, and ball milling 2 hours is with slurry and Al
2O
3Ball separates, and prepares Al
2O
3-B
4The C slip; Wherein: Al
2O
3Powder and B
4The weight ratio of C powder is 10: 1;
3. at Al
2O
3-B
4The C slip adds ammonium persulfate 0.5ml, tetramethylethylenediamine 0.2ml, mixes;
4. the slip that mixes is filled in the mould, left standstill under the room temperature 30 minutes, slip solidifies fully, sloughs mould, obtains Al
2O
3-B
4C material green compact.
Embodiment 2
1. in the 100ml deionized water, add N hydroxymethyl acrylamide 10g, subunit bisacrylamide 0.33g, ammonium polyacrylate 5g prepares premixed liquid; Wherein: the weight ratio of N hydroxymethyl acrylamide and subunit bisacrylamide is 30.3: 1;
2. in ball grinder, add 500gAl
2O
3Ball, 300gAl
2O
3Powder, 10g B
4The C powder adds the premixed liquid of preparing wherein, and ball milling 4 hours is with slurry and Al
2O
3Ball separates, and prepares Al
2O
3-B
4The C slip; Wherein: Al
2O
3Powder and B
4The weight ratio of C powder is 30: 1;
3. at Al
2O
3-B
4The C slip adds ammonium persulfate 1.0ml, tetramethylethylenediamine 0.5ml, mixes;
4. the slip that mixes is filled in the mould, left standstill under the room temperature 30 minutes, slip solidifies fully, sloughs mould, obtains Al
2O
3-B
4C material green compact.
Embodiment 3
1. in the 100ml deionized water, add N hydroxymethyl acrylamide 10g, subunit bisacrylamide 0.2g, ammonium polyacrylate 8g prepares premixed liquid; Wherein: the weight ratio of N hydroxymethyl acrylamide and subunit bisacrylamide is 50: 1;
2. in ball grinder, add 500gAl
2O
3Ball, 400g Al
2O
3Powder, 8g B
4The C powder adds the premixed liquid of preparing wherein, and ball milling 6 hours is with slurry and Al
2O
3Ball separates, and prepares Al
2O
3-B
4The C slip; Al wherein
2O
3Powder and B
4The weight ratio of C powder is 50: 1;
3. at Al
2O
3-B
4The C slip adds ammonium persulfate 2ml, tetramethylethylenediamine 1ml, mixes;
4. with the Al that mixes
2O
3-B
4The C slip is filled in the mould, leaves standstill under the room temperature 30 minutes, and slip solidifies fully, sloughs mould, obtains Al
2O
3-B
4C material green compact.
Claims (2)
1. Al
2O
3-B
4The notes of the C material type method of congealing into, step is:
The first step; With organic monomer N hydroxymethyl acrylamide, crosslinking chemical subunit bisacrylamide and spreading agent ammonium polyacrylate and the mixed premixed liquid of preparing of deionized water; Wherein the deionized water consumption is 100ml, said organic monomer and dosage of crosslinking agent, and the weight ratio of measuring with gram is 20~50: 1; The consumption of spreading agent ammonium polyacrylate is 3~8 grams;
Step 2 adds Al in ball grinder
2O
3Powder, B
4C powder and abrading-ball add the premixed liquid of preparation wherein, and Ball milling 2~6 hours is prepared the slurry of solid load>=50vol%, viscosity≤1Pas;
Step 3 adds the initiator ammonium persulfate of 0.5~2ml in the slurry, and the catalyzer tetramethylethylenediamine of 0.2~1ml mixes;
Step 4 in mould, left standstill the slurry perfusion that mixes 30 minutes under the room temperature, slurry solidifies fully, sloughs mould, obtains Al
2O
3-B
4C material green compact.
2. according to the described Al of claim 1
2O
3-B
4The notes of the C material type method of congealing into is characterized in that: used Al in the step 2
2O
3Powder and B
4The weight ratio of C powder is 10~50: 1.
Priority Applications (1)
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CN200910263466XA CN101740151B (en) | 2009-12-17 | 2009-12-17 | Gel-casting method of Al2O3-B4C material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910263466XA CN101740151B (en) | 2009-12-17 | 2009-12-17 | Gel-casting method of Al2O3-B4C material |
Publications (2)
Publication Number | Publication Date |
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CN101740151A CN101740151A (en) | 2010-06-16 |
CN101740151B true CN101740151B (en) | 2012-05-30 |
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CN200910263466XA Active CN101740151B (en) | 2009-12-17 | 2009-12-17 | Gel-casting method of Al2O3-B4C material |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104030665A (en) * | 2014-07-01 | 2014-09-10 | 中国核动力研究设计院 | Method for preparing Al2O3-B4C-SiO2-MgO pellets |
CN104700905B (en) * | 2015-02-17 | 2017-12-15 | 上海核工程研究设计院 | One kind carries boron monolithic devices and discrete type combination burnable poison fuel assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1989262A (en) * | 2004-04-22 | 2007-06-27 | 艾尔坎国际有限公司 | Improved neutron absorption effectiveness for boron content aluminum materials |
WO2008102801A1 (en) * | 2007-02-21 | 2008-08-28 | National Institute Of Advanced Industrial Science And Technology | Ceramic porous body with communication macropores and process for producing the ceramic porous body |
-
2009
- 2009-12-17 CN CN200910263466XA patent/CN101740151B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1989262A (en) * | 2004-04-22 | 2007-06-27 | 艾尔坎国际有限公司 | Improved neutron absorption effectiveness for boron content aluminum materials |
WO2008102801A1 (en) * | 2007-02-21 | 2008-08-28 | National Institute Of Advanced Industrial Science And Technology | Ceramic porous body with communication macropores and process for producing the ceramic porous body |
Non-Patent Citations (3)
Title |
---|
许奎等.氧化铝陶瓷凝胶注模成型工艺研究.《成都市2007科技年机械工程学会粉冶年会论文集》.2007, * |
黄华伟等.凝胶注模成型制备Al2O3/B4C可燃毒物芯块.《材料科学与工程学报》.2010,第28卷(第6期), * |
黄栋生等.Al_2O_3-B_4C弥散陶瓷芯块的研制.《核动力工程》.1993,第14卷(第5期), * |
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CN101740151A (en) | 2010-06-16 |
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