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Preparation and cha...
Preparation and characterization of SiC-ZAC composite material for immobilizing the simulated radioactive graphite
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- Ye, Mingliang (författare)
- Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China.;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.
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- Teng, Yuancheng (författare)
- Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China.;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.
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- Zhao, Xiaofeng (författare)
- Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China.;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.;Uppsala Univ, Mat Theory Div, Dept Phys & Astron, Condensed Matter Theory Grp, S-75120 Uppsala, Sweden.
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- Wang, Shanlin (författare)
- Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China.;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.
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- Tang, Jiayuan (författare)
- Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China.;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.
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- Ahuja, Rajeev, 1965- (författare)
- Uppsala universitet,Materialteori,Teoretisk fysik
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Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China. Southwest Univ Sci & Technol, Sch Mat Sci & Engn, Mianyang 621010, Sichuan, Peoples R China.;Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China.;Uppsala Univ, Mat Theory Div, Dept Phys & Astron, Condensed Matter Theory Grp, S-75120 Uppsala, Sweden. (creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Progress in nuclear energy (New series). - : Elsevier. - 0149-1970 .- 1878-4224. ; 143
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- For the safe treatment and disposal of radioactive graphite, SiC-ZAC (ZAC: ZnO-Al2O3-CaO glass-ceramic) composite materials were designed, in which ZAC is used as a sintering additive. The performance of ZAC was firstly studied by ASTM C1285 leaching test to obtain a formula composition with high chemical stability. Then, using the optimized formula of ZAC, the SiC-ZAC composites were prepared by vacuum calcination at 1350 degrees C-1410 degrees C for the immobilizing of simulated radioactive graphite, and the structure and compositions of SiC-ZAC composites were studied by XRD, SEM, EDS. The material Gibbs free energy function method was used to calculate the thermodynamics of SiC-ZAC composites to investigate the reaction ways among Si, C and ZAC. The results show the Z30 (30 wt% ZnO, 44.91 wt% Al2O3, 25.09 wt% CaO) glass-ceramic is the applicable formula composition due to its high chemical stability, in which the normalized elemental mass loss of Zn, Al, Ca are 10(-)(6) g/m(2)-10(-)(5) g/m(2), 10(-1) g/m(2), 10(-1) g/m(2) respectively. Calcined at 1350 degrees C for 2 h, the B-Z30(0)-1(70.05 wt% Si, 29.95 wt% C) sample can be obtained with the phase compositions of beta-SiC, alpha-SiC and a small amount of residual graphite. Moreover, the formations of Ca2Al2SiO7 and CaAl4O7 crystalline phase had a negative effect on the immobilization of simulated radioactive graphite in SiC-ZAC composites.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Radioactive graphite
- SiC-ZAC composites
- ZAC(ZnO-Al2O3-CaO)
- Immobilization
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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