Browsing by Author "Zabels, Roberts"
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Ātro jonu izraisītie struktūras un mikromehānisko īpašību modifikācijas procesi platzonas jonu kristālos
Zabels, Roberts (Latvijas Universitāte, 2015)Parādīts, ka ātro jonu izraisītajās struktūras un mikromehānisko īpašību izmaiņās LiF kristālos nozīmīgu ieguldījumu dod prizmatisko dislokāciju cilpu veidošanās. Atrasts, ka dislokāciju aizmetņi veidojas jau individuālos ... -
Ātro zelta jonu izraisītās struktūras un nanomehānisko īpašību izmaiņas LiF kristālos
Spūlis, Rūdolfs (Latvijas Universitāte, 2011)Darbā pētītas struktūras un mikromehānisko īpašību izmaiņas LiF monokristālos, apstarojot tos ar ātrajiem zelta joniem. Pētījumos izmantotas nanoindentēšanas, optiskās, atomspēka un skenējošās elektronu mikroskopijas, un ... -
Depth profiles of aggregate centers and nanodefects in LiF crystals irradiated with 34 MeV 84Kr, 56 MeV 40Ar and 12 MeV 12C ions
Dauletbekova, Alma K.; Skuratov, Vladimir Alexeevich; Kirilkin, N. S.; Manika, Ilze P.; Maniks, Janis J.; Zabels, Roberts; Akilbekov, Abdirash T.; Volkov, Alexander E.; Baizhumanov, Muratbek K.; Zdorovets., Maxim V; Seitbayev, Aibek (Elsevier B.V., 2018)Depth profiles of nanohardness and photoluminescence of F2 and F3 + centers in LiF crystals irradiated with 12 MeV 12C, 56 MeV 40Ar and 34 MeV 84Kr ions at fluences 1010–1015 ions/cm2 have been studied using laser scanning ... -
Depth profiles of damage creation and hardening in MgO irradiated with GeV heavy ions
Manika, Ilze P.; Maniks, Janis J.; Zabels, Roberts; Grants, Rolands; Kuzmin, Alexei; Schwartz, Kurt (Elsevier B.V., 2019)The effect of irradiation with GeV heavy ions (U, Au, Bi) on the structure and mechanical properties of MgO single crystals was studied. The methods of nanoindentation, dislocation mobility, optical absorption and ... -
Formation of dislocations and hardening of LiF under high-dose irradiation with 5–21 MeV 12C ions
Zabels, Roberts; Manika, Ilze P.; Schwartz, Kurt; Maniks, Janis J.; Dauletbekova, Alma K.; Grants, Rolands; Baizhumanov, Muratbek K.; Zdorovets, Maxim V. (Springer Verlag, 2017)The emergence of dislocations and hardening of LiF crystals irradiated to high doses with 12C ions have been investigated using chemical etching, AFM, nanoindentation, and thermal annealing. At fluences ensuring the ... -
Formation of dislocations in LiF irradiated with 3He and 4He ions
Manika, Ilze P.; Zabels, Roberts; Maniks, Janis J.; Schwartz, Kurt; Grants, Rolands; Krasta, T.; Kuzmin, Alexei (Elsevier B.V., 2018)Influence of the irradiation with 13.5 MeV 3He and 5 MeV 4He ions on the micro-structure and mechanical properties of LiF single crystals was studied. The depth profiles of nanoindentation, dislocation mobility, selective ... -
Hardness and modulus of elasticity of atomic layer deposited Al2O3-ZrO2 nanolaminates and mixtures
Jõgiaas, Taivo; Zabels, Roberts; Tarre, Aivar; Tamm, Aile (Elsevier B.V., 2020)Atomic layer deposition was used to produce 90–105 nm thick alumina-zirconia mixtures and nanolaminate structures on soda-lime glass substrate. The resultant chemical and structural compositions of the thin films were ... -
Luminescence of F2 and F3 + centres in LiF crystals irradiated with 12 MeV 12C ions
Akilbekov, A.; Dauletbekova, A.; Kirilkin, N.; Baizhumanov, M.; Seitbayev, A.; Karipbayev, Zh.; Giniyatova, Sh.; Zabels, Roberts (Institute of Physics Publishing, 2018)Dependences of the nanohardness and photoluminescence of F 2 and F 3 + centers on the depth in LiF crystals irradiated with 12 MeV 12 C ions to fluences 10 10 -10 15 ions/cm 2 were studied using laser scanning confocal ... -
Nanostructured Coating for Aluminum Alloys Used in Aerospace Applications
Merisalu, Maido; Aarik, Lauri; Piirsoo, Helle-Mai; Kozlova, Jekaterina; Tarre, Aivar; Zabels, Roberts; Wessing, Johanna; Brieva, Abel; Sammelselg, Vaïno (The Electrochemical Society, 2022)A thin industrial corrosion-protection nanostructured coating for the Al alloy AA2024-T3 is demonstrated. The coating is prepared in a two-step process utilizing hard anodizing as a pre-treatment, followed by sealing and ... -
Zn–ZnO nanokompozītu pārklājumu iegūšana un struktūras midificēšana atkvēlināšanas laikā
Zabels, Roberts (Latvijas Universitāte, 2008)Darba mērķis bija ar mehanoaktivētās oksidēšanas metodi iegūto Zn-ZnO naokompozīto pārklājumu īpašību noskaidrošana atkarībā no atkvēlināšanas temperatūras. Darba gaitā tika novērots, ka iegūtie pārklājumi pēc atkvēlināšanas ...