The effect of Ni12+ heavy ion irradiation on the optical and structural properties of BeO ceramics

Effect of Proton Irradiation on the Defect Evolution of Zr/Nb Nanoscale Multilayers

“…Radiation-induced defects and the corresponding changes in mechanical properties in irradiated materials have been carefully studied in recent decades for various multilayer coatings [1][2][3][4][5][6][7]. These structures with various crystal structures are widely used as self-healing coatings in radiation point defects, where vacancies and interstitials can recombine [8][9][10][11].…”

Study of change in beryllium oxide strength properties as a result of irradiation with heavy ions

“…The general view of the obtained data on changes in strength characteristics indicates the resistance of ceramics to irradiation with O 2+ and Ar 8+ ions, and weak resistance to irradiation with Xe 22+ ions, which has a direct dependence of strength characteristics on the energy of incident ions and their damaging ability due to energy losses. In fact, it was shown in [22,23] that irradiation with heavy ions with energies above 70 MeV at fluences above 10 13 -10 14 ion/cm 2 , the main structural distortions are associated with partial disordering and the formation of a large number of point and vacancy defects leading to destruction and partial swelling of the irradiated layer of ceramic. At the same time, according to the general theory of radiation damage based on the model of thermal bursts arising along the trajectory of ions in the material for very short periods of time (10 −13 -10 −15 s) and leading to a sharp increase in temperature in local regions of the structure, formed point defects are capable of generating primary knocked-out atoms and cascades of knocked-out electrons.…”

“…Such overlap leads to the cumulative effect of radiation damage and the occurrence of disordered areas in the structure, as well as structurally distorted inclusions. According to the data of morphological studies presented in [22,23], the authors found that irradiation with heavy ions leads to a sharp change in the surface morphology, as well as partial swelling of ceramic. Such behavior of the near-surface layer under irradiation can be caused by deformation processes that lead to the extrusion of the deformed volume along the grain boundaries to the surface, thereby destroying the crystalline and chemical bonds.…”

“…Most research works are devoted to the study of the effect of neutron radiation and date back to 1950-2000 [15][16][17][18][19][20]. Current data on the resistance of beryllium oxide to heavy ion irradiation are insufficient, making such research in this field the most promising in view of their large potential for use as structural materials for nuclear power [21][22][23][24]. Based on the above, the main goal of this work is to study the effect of irradiation with heavy ions such as O 2+ (28 MeV), Ar 8+ (70 MeV), Kr 15+ (147 MeV), Xe 22+ (230 MeV) on the strength mechanical properties of ceramics exposed to irradiation.…”

Study of irradiation temperature effect on change of structural, optical, and strength properties of BeO ceramics when irradiated with Ar8+ and Xe22 heavy ions

“…However, the question still remains open related to the behavior of the structural and strength properties of BeO ceramics to high-temperature irradiation. As is known, when materials are heated, partial annealing and relaxation of defects occurs due to changes in the vibrational modes of atoms and subsequent annihilation of point defects with each other [23][24][25]. In this case, during the passage of heavy ions in the material, according to the theory of thermal peaks, regions with an increased temperature are formed along the trajectory of the ions, in which defects are formed [26][27][28][29][30].…”