Manufacture, structure and electrophysical properties of YSZ/SrTixZr1-xO3 solid solution; Ceramics International; Vol. 46, iss. 18, Pt. A

Manufacture, structure and electrophysical properties of YSZ/SrTixZr1-xO3 solid solution; Ceramics International; Vol. 46, iss. 18, Pt. A

Détails bibliographiques
Parent link:	Ceramics International Vol. 46, iss. 18, Pt. A.— 2020.— [P. 28120-28124]
Auteur principal:	Sudzhanskaya I. V. Irina Vasiljevna
Collectivité auteur:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Autres auteurs:	Nekrasova Yu. S. Yuliya Sergeevna, Gogolev A. S. Aleksey Sergeevich
Résumé:	Title screen Solid solution samples of YSZ/SrTixZr1-xO3 obtained by sol-gel method are characterized by density of 5 g/cm3, porosity of 3.37%, Vickers microhardness of 990 Hv, fracture toughness of 83.8 MPam1/2. X-ray diffraction analysis shows the presence of two phases: a cubic structure (Fm3‾m) phase of yttrium stabilized zirconia dioxide and a tetragonal structure (I4/mcm) phase which corresponds to solid solution of SrTixZr1-xO3 (0.4 < x < 0.95). Frequency dependences of a conductivity and dielectric permittivity of the YSZ/SrTixZr1-xO3 ceramic system are obtained using the method of impedance spectroscopy. It is shown that the conductivity value determined from the high frequency plateau corresponds to the bulk conductivity, in the low frequency plateau - to the grain boundary conductivity. It is found that an activation energy of a conduction process has the values 0.84 eV and 1.43 eV for bulk and for grain boundary, respectively. Dielectric relaxation is observed along the grain boundary in the temperature range of 450 °C-700 °C. Режим доступа: по договору с организацией-держателем ресурса
Langue:	anglais
Publié:	2020
Sujets:	электронный ресурс труды учёных ТПУ impedance spectroscopy conductivity dielectric permittivity solid solution oxide ceramic импеданская спектрометрия проводимость диэлектрическая проницаемость твердые растворы
Accès en ligne:	https://doi.org/10.1016/j.ceramint.2020.07.308
Format:	Électronique Chapitre de livre
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663046

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