Comparison of tritium release behavior in Li2TiO3 and promising core-shell Li2TiO3–Li4SiO4 biphasic ceramic pebbles

Qi, Qiang; Wang, Jing; Zhou, Qilai; Zhang, Yingchun; Zhao, Mingzhong; Gu, Shouxi; Nakata, Moeko; Zhou, Hui; Oya, Yasuhisa; Luo, Guang–Nan

doi:10.1016/j.jnucmat.2020.152330

Cited by 28 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This condition results in the generation of numerous dislocations and grain boundaries, which can contribute to strengthening and enhanced resistance against radiation damage. Similar effects associated with dimensional factors that increase resistance to radiation embrittlement and gas swelling were considered in the work [33], and the hypothesis linking the presence of interphase boundaries in two-component lithium-containing ceramics was considered in a number of scientific works of the following teams of authors: [34][35][36]. The assessment of how variations in the components affect changes in strength properties was conducted through methods like hardness measurements using the indentation method and resistance to single compression under constant pressure.…”

Section: Resultsmentioning

confidence: 99%

Study of the Surface-Layer Softening Effects in xLi2ZrO3–(1−x)Li4SiO4 Ceramics under Irradiation with He2+ Ions

Shlimas,

Borgekov,

Kadyrzhanov

et al. 2024

Ceramics

View full text Add to dashboard Cite

The study investigates alterations in the mechanical and thermophysical properties of ceramics composed of xLi2ZrO3–(1−x)Li4SiO4 as radiation damage accumulates, mainly linked to helium agglomeration in the surface layer. This research is motivated by the potential to develop lithium-containing ceramics characterized by exceptional strength properties and a resistance to the accumulation of radiation damage and ensuing deformation distortions in the near-surface layer. The study of the radiation damage accumulation processes in the near-surface layer was conducted through intense irradiation of ceramics using He2+ ions at a temperature of 700 °C, simulating conditions closely resembling operation conditions. Following this, a correlation between the accumulation of structural modifications (value of atomic displacements) and variations in strength and thermophysical characteristics was established. During the research, it was observed that two-component ceramics exhibit significantly greater resistance to external influences and damage accumulation related to radiation exposure compared to their single-component counterparts. Furthermore, the composition that provides the highest resistance to softening in two-component ceramics is an equal ratio of the components of 0.5Li2ZrO3–0.5Li4SiO4 ceramics.

show abstract

Section: Resultsmentioning

confidence: 99%

Study of the Surface-Layer Softening Effects in xLi2ZrO3–(1−x)Li4SiO4 Ceramics under Irradiation with He2+ Ions

Shlimas,

Borgekov,

Kadyrzhanov

et al. 2024

Ceramics

View full text Add to dashboard Cite

show abstract

“…Li 4 SiO 4 has a better Li density, while Li 2 TiO 3 shows excellent mechanical and tritium release properties [129]. Therefore, the biphasic Li 2 TiO 3 -Li 4 SiO 4 breeding material has been researched and developed in recent years to combine the advantages of Li 4 SiO 4 and Li 2 TiO 3 [95,127,130]. This biphasic breeder material shows good prospects for obtaining enhanced mechanical properties and balanced tritium release properties [129].…”

Section: Preparation Of LI 2 Tio 3 Biphasic Ceramic Pebblesmentioning

confidence: 99%

Recent Progress in Research of Solid Tritium Breeder Materials Li2TiO3: A Review

Chen

Wang

2022

Coatings

View full text Add to dashboard Cite

During the past decades, fusion reactor fuels such as deuterium and tritium have been extensively investigated due to increasing interest in nuclear fusion energy. Tritium, which is scarce in nature, needs to be fabricated by tritium breeder materials. Among the commonly investigated tritium breeder materials, lithium titanate (Li2TiO3) is recognized as one of the most promising solid tritium breeder materials because of its considerable lithium (Li) atomic density, low activation, excellent chemical stability, and low-temperature tritium release performance. This paper aims to provide a systematic review of the current progress in Li2TiO3 preparation methods as well as the high Li density, tritium release performance, irradiation behavior, and modification technologies of Li2TiO3 pebbles. Li2TiO3 can be synthesized by strategies such as solid-state, sol–gel, hydrothermal, solution combustion synthesis, and co-precipitation methods. Among them, the hydrothermal method is promising due to its simplicity and low cost. Many researchers have begun to focus on composite ceramic pebbles to further improve tritium breeder performance. This will provide a new direction for the future development of Li2TiO3 pebbles. The present review concludes with a summary of the preparation methods currently under development and offers an outlook of future opportunities, which will inspire more in-depth investigation and promote the practical application of Li2TiO3 in this field.

show abstract

“…At the same time, the presence of two or more phases in the structure of ceramics can lead to the fact that the processes of radiation damage will be restrained by interfacial boundaries or a dislocation structure [18,19]. Such hypotheses were put forward in a number of works [20][21][22][23] devoted to the study of the properties of two-three-phase lithium-containing ceramics, according to which the presence of several phases in the structure affects not only the strengthening of ceramics but also their productivity in terms of helium yield, due to the acceleration of reactions with lithium [24,25].…”

Section: Introductionmentioning

confidence: 99%

Study of Radiation Resistance to Helium Swelling of Li2ZrO3/LiO and Li2ZrO3 Ceramics

et al. 2022

View full text Add to dashboard Cite

The key aim of this paper is to study the presence effect of LiO impurity phases in Li2ZrO3 ceramics on the resistance to helium swelling and structural degradation during implanted helium accumulation in the near-surface layer structure. The hypothesis put forward is based on a number of scientific papers, in which it was reported that the presence of two or more phases in lithium-containing ceramics led to a decrease in the rate of radiation damage and gas swelling due to the presence of additional interfacial boundaries that prevent the point defect accumulation. As a result of the evaluation of the crystal structure deformation, it was found that the presence of the LiO impurity phase in the structure of Li2ZrO3 ceramics led to a threefold decrease in the deformation of the crystal lattice due to helium swelling at doses of 5 × 1017–5 × 1018 ion/cm2. At the same time, the nature of the crystal lattice deformation for different ceramic types is different: in the case of Li2ZrO3 ceramics, an anisotropic distortion of the crystal structure is observed, in the case of Li2ZrO3/LiO ceramics, the crystal lattice deformation has an isotropic nature.

show abstract

Comparison of tritium release behavior in Li2TiO3 and promising core-shell Li2TiO3–Li4SiO4 biphasic ceramic pebbles

Cited by 28 publications

References 19 publications

Study of the Surface-Layer Softening Effects in xLi2ZrO3–(1−x)Li4SiO4 Ceramics under Irradiation with He2+ Ions

Study of the Surface-Layer Softening Effects in xLi2ZrO3–(1−x)Li4SiO4 Ceramics under Irradiation with He2+ Ions

Recent Progress in Research of Solid Tritium Breeder Materials Li2TiO3: A Review

Study of Radiation Resistance to Helium Swelling of Li2ZrO3/LiO and Li2ZrO3 Ceramics

Contact Info

Product

Resources

About