Donetsk National Technical University
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https://ea.donntu.edu.ua/jspui/handle/123456789/25999| Title: | Механизм текстурирования поликристаллических сложных оксидных систем со структурой перовскита в слабом переменном электрическом поле |
| Other Titles: | POLYCRYSTAL COMPOUND OXIDE SYSTEMS TEXTURIZING MECHANISM WITH THE PEROVSKITE STRUCTURE IN A WEAK EXTERNAL ALTERNATING ELECTRIC FIELD |
| Authors: | Погибко, В.М. |
| Keywords: | синтез цирконат-титанат свинца оксалатный прекурсор нанокристалл рентгеновская дифракция nanopowder external alternating electric field sintering diffusion texture ceramics electrophysical properties |
| Issue Date: | 2014 |
| Publisher: | Наукові праці ДонНТУ. Серія: Хімія і хімічна технологія. - 2014. - Вип. 2(23). - С. 49-59 |
| Abstract: | Разработан метод формирования текстуры при спекании поликристаллической керамики в переменном электрическом поле. На основе легированного марганцем твердого раствора (К0,5Na0,5)NbO3 получена текстурированная пьезокерамика с точкой Кюри 392°С и пьезочувствительностью g33 на уровне 205 мВ•м/Н, что значительно выше по сравнению с лучшими образцами промышленной пьезокерамики на основе цирконата-титаната свинца. |
| Description: | A method of the functional compact materials texturizing during the sintering without addition of extraneous template substances to piezoceramics has been developed. A theoretical foundation of the crystallite texture forming process during the sintering of polycrystalline ceramics in an alternating electric field has been developed based on the band theory of semiconductors and their electroconductivity in external weak alternating electric fields and on the diffusion equation. A textured piezoceramics with the Curie point of 392°С and g33 piezosensitivity at the level of 205 mV•m/N was made for the first time based on (К0,5Na0,5)NbO3 solid solution doped with manganese. It’s more than 4 times higher in comparison with the best patterns of the industrial PZT piezoceramics. It was shown as a result of conducted research that the creation of textures in polycrystalline ferro- and piezoceramics makes it possible to raise substantially its electrophysical properties. |
| URI: | http://ea.donntu.edu.ua/handle/123456789/25999 |
| Appears in Collections: | Випуск 2(23), 2014 |
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