Барийсодержащая керамика с нелинейными характеристиками
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НТУ "ХПИ"
Abstract
Приведены результаты исследования барийсодержащей керамики с нелинейными характеристиками на основе композиций системы BaO – SrO – TiO₂. Определены параметры устойчивого синтеза и уточнена технология получения подобных материалов заданного состава, выбраны допирующие добавки, исследована микроструктура образцов. Разработаны составы барийстронцийциркониевых титанатов с сегнетоэлектрическими свойствами: большой диэлектрической проницаемостью, высоким значением пробивного напряжения и существенной нелинейностью вольт-амперных характеристик. Рассмотрена возможность получения композитных слоистых изделий, а также тонкопленочная технология напыления аэрозолей порошков сегнетокерамики на основе полученных материалов.
The results of the study barium-containing ceramics with non-linear characteristics based system tracks BaO – SrO – TiO₂. The parameters of asustainable synthesis and refined technology for producing such materials specified composition, doping selected additives to study the microstructure of the samples. Compositions bariystrontsiytsirkonievyh materials with ferroelectric properties. Physical, mechanical and technical characteristics of new developed materials have been ascertained. Materials of (Ba₀,₇₅Sr₀,₂₅)(Ti₀,₉₅Zr₀,₀₅)O₃ composition are characterized with high performance properties: relative dielectric permittivity in the fields Е = 10³ : 5 · 10³ V/m at temperatures close to Tk is equal εᵣ = 4 · 10³ : 1,2 · 10⁴; the loss tangent of dielectric tgδ ∙ 10³ no more than 30; compressive bending limit - 100 MPa; apparent density ρk = 5100 kg/m³, volume resistivity (ρᵥ)(0,4 - 1,2) · 10⁶Ом · см (при 20 ºС). A model for the production of cell - forming line electromagnet waves of high intensity and carried out research and experimental testing of products developed segnetokeramicheskogo material used as the working fluid of high-forming devices. The possibility of producing composite laminates, as well as thin-film deposition technology of ferroelectric powder aerosols based on the submissions received.
The results of the study barium-containing ceramics with non-linear characteristics based system tracks BaO – SrO – TiO₂. The parameters of asustainable synthesis and refined technology for producing such materials specified composition, doping selected additives to study the microstructure of the samples. Compositions bariystrontsiytsirkonievyh materials with ferroelectric properties. Physical, mechanical and technical characteristics of new developed materials have been ascertained. Materials of (Ba₀,₇₅Sr₀,₂₅)(Ti₀,₉₅Zr₀,₀₅)O₃ composition are characterized with high performance properties: relative dielectric permittivity in the fields Е = 10³ : 5 · 10³ V/m at temperatures close to Tk is equal εᵣ = 4 · 10³ : 1,2 · 10⁴; the loss tangent of dielectric tgδ ∙ 10³ no more than 30; compressive bending limit - 100 MPa; apparent density ρk = 5100 kg/m³, volume resistivity (ρᵥ)(0,4 - 1,2) · 10⁶Ом · см (при 20 ºС). A model for the production of cell - forming line electromagnet waves of high intensity and carried out research and experimental testing of products developed segnetokeramicheskogo material used as the working fluid of high-forming devices. The possibility of producing composite laminates, as well as thin-film deposition technology of ferroelectric powder aerosols based on the submissions received.
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Citation
Барийсодержащая керамика с нелинейными характеристиками / Е. В. Христич [и др.] // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Темат. вип. : Хімія, хімічна технологія та екологія = Bulletin of National Technical University "KhPI" : coll. of sci. papers. Ser. : Chemistry, Chemical Technology and Environment. – Харків : НТУ "ХПІ", 2016. – № 22 (1194). – С. 221-226.