钨青铜结构Sr2K0.1Na0.9Nb5O15无铅压电陶瓷的制备和电性能研究
Study on the preparation and electrical properties of Sr2K0.1Na0.9Nb5O15 lead-free ceramics
在传统固相技术的基础上，引入二步合成法成功制备了Sr2K0.1Na0.9Nb5O15无铅压电陶瓷。研究了不同烧结温度对陶瓷相结构、微观组织结构和电性能的影响。结果表明：在不同烧结温度下，所获陶瓷均为四方相钨青铜结构。随着烧结温度的升高，陶瓷致密度和电性能都呈现出先升高后降低趋势。当预烧温度为1180 ˚C，烧结温度为1340 ˚C时，陶瓷致密性最好，陶瓷晶粒比较均匀， r、tan 和居里温度同时达到最佳值，分别为1221、0.0159、270 ˚C。
In this paper, Lead-freeSr2K0.1Na0.9Nb5O15 ceramics were prepared by conventional solid state method. The effects of sintering temperature on phase structure, microstructure and electrical properties of Sr2K0.1Na0.9Nb5O15 ceramics were investigated. The XRD analysis results showed that the obtained ceramics were all pure tungsten bronze structure Sr2K0.1Na0.9Nb5O15 when the sintering temperature was from 1300 to 1360 ºC. With increasing the sintering temperature, the relative density and electrical properties of the obtained ceramics all increased firstly, and decreased after reaching the maxium. The ceramics sintered at 1340 ºC achieved uniform grain size, higher density and better properties, which were as follows: r =1221, tan =0.0159, and Tc = 270 ºC.
杨祖培、刘忠山、魏灵灵
材料科学电子元件、电子组件
无铅压电陶瓷微观结构压电性能介电性能
Lead-free piezoelectric ceramicsPhase structureMicrostructureElectrical properties
杨祖培,刘忠山,魏灵灵.钨青铜结构Sr2K0.1Na0.9Nb5O15无铅压电陶瓷的制备和电性能研究[EB/OL].(2009-09-08)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/200909-218.点此复制
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