Properties and microstructure evolution of silicon nitride and zirconium nitride following Ni ion irradiation

Terricabras, Adrien J.; Wang, L.; Raftery, Alicia M.; Nelson, Andrew T.; Zinkle, Steven J.

doi:10.1016/j.jnucmat.2022.153643

Cited by 6 publications

(2 citation statements)

References 100 publications

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“…In this case, the primary factors driving these alterations are the energy losses of incident ions during their interactions with the target crystal structure. Concerning high-energy ions, the difference between the ionization losses of incident ions during interactions with electron shells and nuclei is of several orders of magnitude, and the ionization energy loss of ions during interactions with electron shells plays a dominant role in structural changes [19,20]. At the same time, these changes in ceramics require a detailed study since most of the ceramics considered candidate materials are dielectrics in which alterations in the electron density and its distribution are irreversible in most cases; this is one of the key differences between ceramics and metals and alloys, in which a relaxation characteristic of the recovery of the electron density distribution after irradiation is observed.…”

Section: Statement Of the Reason For Studying Radiation Damage In Cer...mentioning

confidence: 99%

Study of the Relationship between Changes in the Structural, Optical, and Strength Properties of AlN Ceramics Subjected to Irradiation with Heavy Xe23+ Ions

Bikhert,

Kozlovskiy,

Popov

et al. 2023

Materials

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The purpose of this study is to comprehensively analyze the influence of different fluences of irradiation with Xe23+ heavy ions on alterations in the structural, optical, and strength properties of AlN ceramics and to establish a connection between structural distortions and alterations in the optical and mechanical properties of the ceramics. X-ray diffraction, UV-Vis and Raman spectroscopy, and indentation and single-compression methods were used as research methods. During the study, it was demonstrated that at low irradiation fluences, the main role in the changes in the properties of the AlN ceramics is played by effects related to changes in their optical properties and a fundamental absorption edge shift, which characterizes changes in the electronic properties of the ceramics (changes in the distribution of electron density). A study of the variations in the optical properties of the examined samples in relation to the irradiation fluence showed that when the fluence surpasses 5 × 1011 ion/cm2, an extra-spectral absorption band emerges within the range of 3.38–3.40 eV. This band is distinctive for the creation of vacancy ON–VAl complexes within the damaged layer’s structure. The presence of these complexes signifies structural deformations and the accumulation of defective inclusions within the damaged layer. An analysis of changes in the parameters of the crystal lattice showed that structural distortions in the damaged layer are due to the accumulation of tensile residual mechanical stresses, an increase in the concentration of which leads to the swelling and destruction of the damaged layer. Some correlations between the mechanical properties of ceramics and the irradiation fluence indicate the ceramics’ remarkable resistance to radiation-induced brittleness and weakening. These effects become apparent only when structural damage accumulates, resulting in the swelling of the crystal lattice exceeding 2.5–3%.

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Section: Statement Of the Reason For Studying Radiation Damage In Cer...mentioning

confidence: 99%

Study of the Relationship between Changes in the Structural, Optical, and Strength Properties of AlN Ceramics Subjected to Irradiation with Heavy Xe23+ Ions

Bikhert,

Kozlovskiy,

Popov

et al. 2023

Materials

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“…In the transition of nuclear reactors to dispersed nuclear fuel, with the possibility of processing weapons-grade plutonium and reducing the accumulation of long-lived nuclear waste, some of the most promising materials are composite ceramics of the cer-cer type, consisting of refractory oxide, nitride or carbide compounds [4,5]. The focus on these types of ceramics has increased primarily as the use of refractory oxides, nitrides and carbides as materials of inert nuclear fuel matrices will allow the isolation of fissile material particles from each other; in addition, 2 of 14 due to high radiation resistance and mechanical strength, it is possible to increase the life and burnup degree of nuclear fuel, which will increase its operating time [6,7]. The use of refractory oxide compounds allows the increase in the temperature conditions of operation, and small thermal expansion coefficient values of materials such as zirconium dioxide (ZrO 2 ), cerium dioxide (CeO 2 ) and magnesium oxide (MgO) make it possible to exclude the effect of a rise in the volume of the ceramic crystal structure, which may adversely affect the properties of the material, as well as exert additional pressure on the fissile and inert matrix materials [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Study of Radiation Damage Kinetics in Dispersed Nuclear Fuel on Zirconium Dioxide Doped with Cerium Dioxide

et al. 2023

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One area that holds promise for nuclear energy advancement, which is the most attractive industry for eliminating the imbalance in the energy sector and reducing the world’s energy shortage for the long term, is the replacement of traditional uranium fuel with plutonium fuel. The focus on this research area is due to the growing concern of the world community about the problem of handling spent nuclear fuel, including its further use or storage and disposal. The main aims of this paper are to study the resistance of composite ceramics based on zirconium and cerium dioxide to the hydrogenation processes and subsequent destructive embrittlement, and to identify patterns of growth stability attributable to the occurrence of interfacial boundaries and changes in the phase composition of ceramics. Studies have shown that the main effects of the structural distortion of the crystalline structure of ceramics are caused primarily by tensile deformation distortions, resulting in the accumulation of radiation-induced damage. The formation of Zr0.85Ce0.15O2 tetragonal phase of replacement in the structure of ceramics results in a more than two-fold reduction in the deformation distortion degree in cases of high-dose radiation with protons. The evaluation of the alteration in the strength properties of ceramics revealed that the variation in the phase composition due to polymorphic transformation of the monoclinic Zr0.98Ce0.02O2 → tetragonal Zr0.85Ce0.15O2 type results in the strengthening of the damaged layers and the improvement of the resistance to radiation-induced embrittlement and softening.

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The microstructure and physical properties of AlN and SiC ceramics after irradiation with 2 MeV Au ions

Yang

Wang

Zhang

et al. 2023

Applied Surface Science

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Properties and microstructure evolution of silicon nitride and zirconium nitride following Ni ion irradiation

Cited by 6 publications

References 100 publications

Study of the Relationship between Changes in the Structural, Optical, and Strength Properties of AlN Ceramics Subjected to Irradiation with Heavy Xe23+ Ions

Study of the Relationship between Changes in the Structural, Optical, and Strength Properties of AlN Ceramics Subjected to Irradiation with Heavy Xe23+ Ions

Study of Radiation Damage Kinetics in Dispersed Nuclear Fuel on Zirconium Dioxide Doped with Cerium Dioxide

The microstructure and physical properties of AlN and SiC ceramics after irradiation with 2 MeV Au ions

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