Dielectric Properties of the Lead-Free Compositions Based on Sodium–Bismuth Titanate and Alkali Metal Niobates

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING

Russian Metallurgy (Metally) Pub Date : 2025-04-29 DOI:10.1134/S0036029525700454

E. V. Glazunova, L. A. Shilkina, I. A. Verbenko, L. A. Reznichenko

引用次数: 0

Abstract

The use of mechanical activation in the production of (1 – x)(Na_0.5K_0.5)NbO₃–x(Na_0.5Bi_0.5)TiO₃ ceramics is shown to increase the relative density of the ceramics by more than 10%. Several morphotropic phase transitions are found to appear in the system (1 – x)Na_0.5K_0.5NbO₃—xBi_0.5Na_0.5TiO₃ at room temperature. An increase in the amount of Bi_0.5Na_0.5TiO₃ in the system under study is shown to increase the temperature stability of the dielectric properties in the range 100–250°C. Solid solutions in the system (1 – x)Na_0.5K_0.5NbO₃–xBi_0.5Na_0.5TiO₃ with a high Bi_0.5Na_0.5TiO₃ content are promising bases for charge storage devices.

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钛酸铋钠和碱金属铌酸盐无铅复合材料的介电性能

采用机械活化法制备（1 - x）（Na0.5K0.5） NbO3-x (Na0.5Bi0.5)TiO3陶瓷，可使陶瓷的相对密度提高10%以上。在室温下，（1 - x） Na0.5K0.5NbO3-xBi0.5Na0.5TiO3体系中出现了几个嗜形相变。在研究体系中增加Bi0.5Na0.5TiO3的量可以提高介电性能在100-250℃范围内的温度稳定性。（1 - x） Na0.5K0.5NbO3-xBi0.5Na0.5TiO3体系中的固溶体具有较高的Bi0.5Na0.5TiO3含量，是一种很有前途的电荷存储基。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.