Please use this identifier to cite or link to this item:
http://earchive.tpu.ru/handle/11683/20454
Title: | Воздействие мощным импульсным ионным пучком углерода на приповерхностные слои циркониевой керамики |
Authors: | Васильев, Иван Петрович Гынгазов, Сергей Анатольевич Франгульян, Тамара Семёновна Чернявский, Александр Викторович |
Keywords: | мощные пучки; импульсные пучки; углерод; приповерхностные слои; циркониевая керамика; керамика |
Issue Date: | 2014 |
Citation: | Воздействие мощным импульсным ионным пучком углерода на приповерхностные слои циркониевой керамики / И. П. Васильев [и др.] ; науч. рук. А. П. Суржиков // Перспективы развития фундаментальных наук : сборник научных трудов XI Международной конференция студентов и молодых ученых, г. Томск, 22-25 апреля 2014 г. — Томск : Изд-во ТПУ, 2014. — [С. 921-923]. |
Abstract: | The modifying effects of powerful pulsed beam (PPB) of accelerated carbon ions on subsurface layers zirconium ceramics composition (mol%) 97ZrO[2]-3Y[2]O[3] were investigated. The ion beam had the following parameters: the energy of the accelerated ions is E=200 keV, current pulse duration equal tau[и] =100 ns, pulse current density j[i]=40 and 150 A/cm{2}. The total number of pulses was N=100 and 300. At current densities j[i] = 40 and 150 A/cm2 during the pulse 2,5·10{13} and 9,4·10{13} cm{-2} ions C{+} are implanted in the sample, respectively. The structural-phase state, elemental composition and mechanical properties of subsurface ceramic layers modified by ion beam were investigated. The size of the grains in the longitudinal direction on average 4 times larger than in the transverse direction. According X-ray diffractometry data the carbon ions implantation in the surface layer of ceramics is not accompanied by the formation of new impurity phases. When processing ceramics by ion PPB with W[i]= 3 J/cm{2} (fluence f>=9.4•10{15} cm{-2}) the formation of zirconia cubic phases up to 30 wt. % is observed. Based on analysis of the elemental composition irradiated surface layers by SIMS method and their electrical conductivity a conclusion was drawn that the main cause of the cubic phase stabilization in zirconia is the formation non-stoichiometric oxygen vacancies with high concentrations under ion treatment. It was found that action of ion beam on ceramics leads to a magnitude reduction of such mechanical characteristics as microhardness, nanohardness and Young's modulus. |
URI: | http://earchive.tpu.ru/handle/11683/20454 |
Appears in Collections: | Материалы конференций |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
conference_tpu-2014-C21-311.pdf | 162,64 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.