拜托高人给翻译一下 不胜感激

来源：百度知道 编辑：UC知道 时间：2024/06/01 15:27:54
钛酸铋基无铅压电陶瓷具有居里温度高，介电常数低，老化速率小等特点，适用与高温高频的工作环境。由因为其组成中不含铅元素，对环境污染小，使其成为近年来无铅压电陶瓷材料研究热点之一。同时钛酸铋的层状结构使其具有两个缺点：一是矫顽电场高，不利于极化；二是其自发极化的转向受两维空间限制，造成压电活性低。为了改善其压电性能，通常从搀杂改性和工艺改性两方面来考虑。
本论文通过模板法制备钛酸铋基无铅压电陶瓷，以Bi4Ti3O12(简称BIT)为模板制备钛酸铋基无铅压电陶瓷，通过中间模板BIT制备了Na0.5Bi0.5TiO3(简称NBT)，（Na0.84K0.16）0.5Bi0.5TiO3(简称KNBT)。并采用XRD和扫描电镜等手段分析了粉体的物像组成和形貌。并测试了样品的压电性能。在制备BIT模板和通过BIT模板制备NBT,KNBT的过程中均采用了熔盐法。本论文还探讨了预烧温度，不同熔盐及熔盐含量对粉体形貌及压电性能的影响，实验结果表明在熔盐百分比为100%（熔盐与粉体的质量百分比），用NaCl和KCl的混合盐作为熔盐。在1000℃烧成温度下合成的粉体片状结构较为明显，各向异性程度高，且杂质含量较少

Bi4Ti3O12-free piezoelectric ceramic with a high Curie temperature, low dielectric constant, the rate of aging of the characteristics of small, high temperature and apply high-frequency work environment. Because of its components from the lead element of the environment of small, making it a lead-free piezoelectric ceramic materials in recent years on one of the hot spots. At the same time Bi4Ti3O12 the layered structure so that it has two drawbacks: First, the coercive electric field, not conducive to polarization; second, it is subject to spontaneous polarization of the two-dimensional space constraints, resulting in low piezoelectric activity. In order to improve its piezoelectric properties, usually from a mix of modified and modified two aspects to consider.This paper prepared by the template Bi4Ti3O12-free piezoelectric ceramic, to Bi4Ti3O12 (referred to BIT) as a template of Bi4Ti3O12-free piezoelectric ceramic, by the middle of a template BIT Na0.5Bi0.5TiO3 (referred to NBT)