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Journal of Advanced Ceramics 2020, 9(5): 629-640 https://doi.org/10.1007/s40145-020-0419-0
Research Article | Open Access | Issue | Published: 21 September 2020

A comprehensive study on Li4Si1-xTixO4 ceramics for advanced tritium breeders

Show Author's Information Yichao GONGa( ),  Lin LIUa,  Jianqi QIb,  Mao YANGc,  Junjie LIa,  Hailiang WANGb,  Hao GUOb,  Guojun ZHANGa( ),  Tiecheng LUb( )
School of Materials Science & Engineering, Xi’an University of Technology, Xi’an 710048, China
College of Physical Science and Technology, Sichuan University, Chengdu 610064, China
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China
Keywords:
tritium ceramic breeders, Li4Si1-xTixO4, solid solutions, crush load, conductivity, thermal cycling
Cite this article:
GONG Y, LIU L, QI J, et al. A comprehensive study on Li4Si1-xTixO4 ceramics for advanced tritium breeders. Journal of Advanced Ceramics, 2020, 9(5): 629-640. https://doi.org/10.1007/s40145-020-0419-0
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Abstract Full text Electronic supplementary material About this article

Hetero-element doped lithium orthosilicates have been considered as advanced tritium breeders due to the superior performances. In this work, Li4Si1-xTixO4 ceramics were prepared by proprietary hydrothermal process and multistage reactive sintering. The reaction mechanism of Li4Si1-xTixO4 was put forward. XRD and SEM analyses indicate that insertion of Ti leads to lattice expansion, which promotes the grain growth and changes the fracture mode. The compressive tests show that the crush load increases almost four times by increasing x from 0 to 0.2. However, the thermal conductivity and ionic conductivity are the best when x = 0.05 and x = 0.1, respectively. Thermal cycling stability of Li4Si1-xTixO4 pebbles was further appraised through investigating the changes of microstructure and crush load. After undergoing thermal cycling, the Li4Si1-xTixO4 still show higher crush load compared with Li4SiO4, despite Ti segregation in some samples. The x = 0.05 sample exhibits excellent thermal cycling stability. In summary, proper amount of Ti doping can improve the crush load, thermal and ionic conductivity, and thermal cycling stability of Li4SiO4.


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About this article

A comprehensive study on Li4Si1-xTixO4 ceramics for advanced tritium breeders

Show Author's information Yichao GONGa( ), Lin LIUa, Jianqi QIb, Mao YANGc, Junjie LIa, Hailiang WANGb, Hao GUOb, Guojun ZHANGa( ), Tiecheng LUb( )
School of Materials Science & Engineering, Xi’an University of Technology, Xi’an 710048, China
College of Physical Science and Technology, Sichuan University, Chengdu 610064, China
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China

Abstract

Hetero-element doped lithium orthosilicates have been considered as advanced tritium breeders due to the superior performances. In this work, Li4Si1-xTixO4 ceramics were prepared by proprietary hydrothermal process and multistage reactive sintering. The reaction mechanism of Li4Si1-xTixO4 was put forward. XRD and SEM analyses indicate that insertion of Ti leads to lattice expansion, which promotes the grain growth and changes the fracture mode. The compressive tests show that the crush load increases almost four times by increasing x from 0 to 0.2. However, the thermal conductivity and ionic conductivity are the best when x = 0.05 and x = 0.1, respectively. Thermal cycling stability of Li4Si1-xTixO4 pebbles was further appraised through investigating the changes of microstructure and crush load. After undergoing thermal cycling, the Li4Si1-xTixO4 still show higher crush load compared with Li4SiO4, despite Ti segregation in some samples. The x = 0.05 sample exhibits excellent thermal cycling stability. In summary, proper amount of Ti doping can improve the crush load, thermal and ionic conductivity, and thermal cycling stability of Li4SiO4.

Keywords: tritium ceramic breeders, Li4Si1-xTixO4, solid solutions, crush load, conductivity, thermal cycling

References(38)

[1]
M Xiang, C Wang, Y Zhang, et al. Research progress of fabrication process for solid state tritium breeders. Adv Ceram 2016, 37: 241-252.
Google Scholar
[2]
S Konishi, M Enoeda, M Nakamichi, et al. Functional materials for breeding blankets—Status and developments. Nucl Fusion 2017, 57: 092014.
DOI Google Scholar
[3]
KM Feng, XY Wang, YJ Feng, et al. Current progress of Chinese HCCB TBM program. Fusion Eng Des 2016, 109-111: 729-735.
DOI Google Scholar
[4]
CE Johnson, K Noda, N Roux. Ceramic breeder materials: Status and needs. J Nucl Mater 1998, 258-263: 140-148.
DOI Google Scholar
[5]
A Ying, M Akiba, LV Boccaccini, et al. Status and perspective of the R&D on ceramic breeder materials for testing in ITER. J Nucl Mater 2007, 367-370: 1281-1286.
DOI Google Scholar
[6]
JG Li, YX Wan. Present state of Chinese magnetic fusion development and future plans. J Fusion Energ 2019, 38: 113-124.
DOI Google Scholar
[7]
T Hoshino. Pebble fabrication of super advanced tritium breeders using a solid solution of Li2+xTiO3+y with Li2ZrO3. Nucl Mater Energy 2016, 9: 221-226.
DOI Google Scholar
[8]
T Hoshino, Y Edao, Y Kawamura, et al. Pebble fabrication and tritium release properties of an advanced tritium breeder. Fusion Eng Des 2016, 109-111: 1114-1118.
DOI Google Scholar
[9]
T Hoshino, K Ochiai, Y Edao, et al. Evaluation of tritium release properties of advanced tritium breeders. Fusion Sci Technol 2015, 67: 386-389.
DOI Google Scholar
[10]
Y Wang, QL Zhou, LH Xue, et al. Synthesis of the biphasic mixture of Li2TiO3-Li4SiO4 and its irradiation performance. J Eur Ceram Soc 2016, 36: 4107-4113.
DOI Google Scholar
[11]
YW Zhai, J Hu, YB Duan, et al. Characterization of tritium breeding ceramic pebbles prepared by melt spraying. J Eur Ceram Soc 2020, 40: 1602-1612.
DOI Google Scholar
[12]
R Knitter, MHH Kolb, U Kaufmann, et al. Fabrication of modified lithium orthosilicate pebbles by addition of titania. J Nucl Mater 2013, 442: S433-S436.
DOI Google Scholar
[13]
MHH Kolb, R Knitter, T Hoshino. Li4SiO4 based breeder ceramics with Li2TiO3, LiAlO2 and LixLayTiO3 additions, part II: Pebble properties. Fusion Eng Des 2017, 115: 6-16.
DOI Google Scholar
[14]
K Tsuchiya, T Hoshino, H Kawamura, et al. Development of advanced tritium breeders and neutron multipliers for DEMO solid breeder blankets. Nucl Fusion 2007, 47: 1300-1306.
DOI Google Scholar
[15]
R Knitter, B Löbbecke. Reprocessing of lithium orthosilicate breeder material by remelting. J Nucl Mater 2007, 361: 104-111.
DOI Google Scholar
[16]
M Wang, MQ Xiang, YC Zhang. Fabrication and characterization of Li4SiO4 ceramic pebbles doped with Y2O3 and Nb2O5. Solid State Phenom 2018, 281: 28-33.
DOI Google Scholar
[17]
LJ Zhao, XG Long, XJ Chen, et al. Design, synthesis and characterization of the advanced tritium breeder: Li4+xSi1-x AlxO4 ceramics. J Nucl Mater 2015, 467: 911-916.
DOI Google Scholar
[18]
LJ Zhao, XG Long, SM Peng, et al. Tritium release In Li4SiO4 and Li4.2Si0.8Al0.2O4 ceramics. J Nucl Mater 2016, 482: 42-46.
DOI Google Scholar
[19]
MQ Xiang, YC Zhang, Y Zhang, et al. Preparation, performances and reaction mechanism of the Li4+xAlxSi1-xO4 pebbles for advanced tritium breeders. Fusion Eng Des 2017, 116: 17-23.
DOI Google Scholar
[20]
YC Gong, JJ Li, SH Yang, et al. Improvement of crushing strength and thermal conductivity by introduction of hetero- element Al into Li4SiO4. Ceram Int 2019, 45: 24564-24569.
DOI Google Scholar
[21]
Y Saito, T Asai, K Ado, et al. Ionic conductivity of Li+ ion conductors, Li4.2MxSi1-xO4 (M: B3+, Al3+, Ga3+, Cr3+, Fe3+, Co2+, Ni2+). Solid State Ionics 1990, 40-41: 34-37.
DOI Google Scholar
[22]
U Dash, S Sahoo, SKS Parashar, et al. Effect of Li+ ion mobility on the grain boundary conductivity of Li2TiO3 nanoceramics. J Adv Ceram 2014, 3: 98-108.
DOI Google Scholar
[23]
N Roux, G Hollenberg, C Johnson, et al. Summary of experimental results for ceramic breeder materials. Fusion Eng Des 1995, 27: 154-166.
DOI Google Scholar
[24]
N Roux, C Johnson, K Noda. Properties and performance of tritium breeding ceramics. J Nucl Mater 1992, 191-194: 15-22.
DOI Google Scholar
[25]
XW Wu, ZY Wen, XG Xu, et al. Synthesis and characterization of Li4SiO4 nano-powders by a water-based sol-gel process. J Nucl Mater 2009, 392: 471-475.
DOI Google Scholar
[26]
CE Johnson, T Kondo, N Roux, et al. Fabrication, properties, and tritium recovery from solid breeder materials. Fusion Eng Des 1991, 16: 127-139.
DOI Google Scholar
[27]
C Dang, M Yang, YC Gong, et al. A promising tritium breeding material: Nanostructured 2Li2TiO3-Li4SiO4 biphasic ceramic pebbles. J Nucl Mater 2018, 500: 265-269.
DOI Google Scholar
[28]
O Leys, MHH Kolb, A Pucci, et al. Study of lithium germanate additions to advanced ceramic breeder pebbles. J Nucl Mater 2019, 518: 234-240.
DOI Google Scholar
[29]
BL Dubey, AR West. Crystal chemistry of Li4XO4 phases: X = Si, Ge, Ti. J Inorg Nucl Chem 1973, 35: 3713-3717.
DOI Google Scholar
[30]
AR West. Ionic conductivity of oxides based on Li4SiO4. J Appl Electrochem 1973, 3: 327-335.
DOI Google Scholar
[31]
RC Chen, QW Shi, M Yang, et al. Microstructure and phase evolution of Li4TiO4 ceramics pebbles prepared from a nanostructured precursor powder synthesized by hydrothermal method. J Nucl Mater 2018, 508: 434-439.
DOI Google Scholar
[32]
AR West. Ionic conductivity of oxides based on Li4SiO4. J Appl Electrochem 1973, 3: 327-335.
DOI Google Scholar
[33]
MQ Xiang, YC Zhang, Y Zhang, et al. Grain growth behavior of Li4SiO4 pebbles fabricated by agar method for tritium breeder. Fusion Eng Des 2016, 112: 513-519.
DOI Google Scholar
[34]
FP Knudsen. Dependence of mechanical strength of brittle polycrystalline specimens on porosity and grain size. J Am Ceram Soc 1959, 42: 376-387.
DOI Google Scholar
[35]
QL Zhou, LH Xue, Y Wang, et al. Preparation of Li2TiO3 ceramic with nano-sized pores by ultrasonic-assisted solution combustion. J Eur Ceram Soc 2017, 37: 3595-3602.
DOI Google Scholar
[36]
SBRS Adnan, NS Mohamed. Effects of Sn substitution on the properties of Li4SiO4 ceramic electrolyte. Solid State Ionics 2014, 262: 559-562.
DOI Google Scholar
[37]
J Ortiz-Landeros, C Gómez-Yáñez, LM Palacios-Romero, et al. Structural and thermochemical chemisorption of CO2 on Li4+x(Si1-xAlx)O4 and Li4-x(Si1-xVx)O4 solid solutions. J Phys Chem A 2012, 116: 3163-3171.
DOI Google Scholar
[38]
H Tanigawa, Y Tanaka, M Enoeda, et al. Thermal conductivity measurement with silica-coated hot wire for Li4SiO4 pebble bed. J Nucl Sci Technol 2009, 46: 553-556.
DOI Google Scholar
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Publication history

Received: 08 June 2020
Revised: 30 August 2020
Accepted: 31 August 2020
Published: 21 September 2020
Issue date: October 2020

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© The author(s) 2020

Acknowledgements

This work is supported by National Natural Science Foundation of China (No. 51802257), Natural Science Foundation of Shaanxi Provincial Department of Education (18JK0570), and China Postdoctoral Science Foundation (2019M663788).

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