文章基本信息

标题：Influence of complex activators of sintering on creating radiotransparent ceramics in SrO–Al2O3–SiO2
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作者：Georgij Lisachuk ; Ruslan Kryvobok ; Artem Zakharov 等
期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2017
卷号：1
期号：6
页码：10-15
DOI：10.15587/1729-4061.2017.91110
语种：English
出版社：PC Technology Center
摘要：The study has solved the problem of obtaining densely sintered ceramics at a low firing temperature on the basis of the system SrO–Al2O3–SiO2. This was made possible after researching the influence of complex activators of sintering, selected among fluorides of alkali metals, and an oxide combination of stannum and lithium on the process of synthesizing strontium anorthite ceramics.The tests have proved that it is technologically advisable to use the complex sintering activators LiF–NaF and SnO2–Li2O due to their low-temperature eutectics and beneficial effects on the structure and properties of strontium ceramics.The experiments were used to study the impact of the complex sintering activators of a fluxing action in the amounts of 1–3 wt. %, with eutectic ratios of the components, on the low-temperature synthesis of strontium anorthite. The tests have confirmed the possibility of activating the reaction that produces the intermediate phase of silicate strontium, which reduces the temperature of firing strontium anorthite ceramics. The resulting ceramic material, based on a crystalline phase, is strontium anorthite, which was obtained at a synthesis temperature of 1,250 °C after adding 2 wt. % of Li2CO3+SnO2 to the composition “0” with the following properties: water absorption – 5.52 %, apparent density – 2.88 g/cm3, the dielectric constant – 9.7, and the dielectric loss tangent – 0.06.
关键词：strontium anorthite;sintering enhancer;radio transparent ceramic eutectic;the dielectric permittivity