Воздействие мощным импульсным ионным пучком углерода на приповерхностные слои циркониевой керамики; Перспективы развития фундаментальных наук

Xehetasun bibliografikoak
Parent link:	Перспективы развития фундаментальных наук.— 2014.— [С. 921-923]
Erakunde egilea:	Национальный исследовательский Томский политехнический университет (ТПУ) Институт неразрушающего контроля (ИНК) Кафедра физических методов и приборов контроля качества (ФМПК)
Beste egile batzuk:	Васильев И. П. Иван Петрович, Гынгазов С. А. Сергей Анатольевич, Франгульян Т. С. Тамара Семёновна, Чернявский А. В. Александр Викторович, Суржиков А. П. Анатолий Петрович
Gaia:	Заглавие с экрана 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.
Hizkuntza:	errusiera
Argitaratua:	2014
Saila:	Наноматериалы и нанотехнологии
Gaiak:	электронный ресурс труды учёных ТПУ мощные пучки импульсные пучки углерод приповерхностные слои циркониевая керамика керамика
Sarrera elektronikoa:	http://www.lib.tpu.ru/fulltext/c/2014/C21/311.pdf
Formatua:	Baliabide elektronikoa Liburu kapitulua
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=607015