Open AccessInfluence of the method for producing radiotransparent ceramics based on the system SrO—BaO—Al2O3—SiO2 on its properties
Author(s) -
E. V. Chefranov,
E. Yu. Fedorenko,
R. V. Krivobok,
Г. В. Лисачук,
І.A. Gusarova
Publication year - 2017
Publication title -
naukovì doslìdžennâ z vognetrivìv ta tehnìčnoï keramìki. zbìrnik naukovih pracʹ
Language(s) - English
Resource type - Journals
ISSN - 2663-3566
DOI - 10.35857/2663-3566.117.16
Subject(s) - sintering , materials science , dielectric , ceramic , permittivity , dissipation factor , oxide , process (computing) , mineralogy , mixed oxide , composite material , metallurgy , optoelectronics , computer science , chemistry , operating system
The results of the study of samples of radiotransparent ceramics based on the system SrO—BaO—Al2O3—SiO2 which have been made in one-step and two-step process have been presented. A comparative analysis of their sintering characteristics and dielectric properties have shown that materials which were obtained by a two-stage process are characterized by a relatively high degree of sintering (W = 2..72 ÷ 3.97 %, Papp = 2901 ÷ 3180 kg/m3), sufficient values of dielectric losses tangent (tgδ = 0.000258 ÷ 0.000313), however, their dielectric permittivity (ε = 12.11 ÷ 14.38) don’t reach the specified level. It was concluded that it is necessary to modify the compositions of the basic oxide system using small additives that intensify sintering and provide high-temperature stability of solid solutions of slawsonite and celsian.