The invention discloses piezoelectric ceramic as well as a preparation method and application thereof, and relates to the field of piezoelectric ceramic. The method is different from a two-step sintering process of a traditional sintering process, and densified sintering of the lead-free piezoelectric ceramic is realized by effectively controlling changes of the sintering temperature and the heat preservation time and a formula of raw materials; according to the preparation method of the piezoelectric ceramic, volatilization of alkali metal elements such as K and Na at a high temperature is reduced, stability of the stoichiometric ratio of the formula is facilitated, generation of impure phases is reduced, and therefore the density and process stability of the ceramic are improved; the piezoelectric ceramic provided by the invention has relatively high piezoelectric property, density and mechanical property, and also has environmental friendliness; the piezoelectric ceramic provided by the invention is wide in application prospect, can be applied to an optical fiber scanner in the field of laser display and is configured as the actuating part, and the actuating part controls the optical fiber on the actuating part to perform vibration scanning by utilizing the inverse piezoelectric effect of the piezoelectric ceramic, so that laser scanning imaging is realized.

一种压电陶瓷及其制备方法和应用，其涉及压电陶瓷领域。该方法不同于传统烧结工艺的两步烧结工艺，通过有效控制烧结温度和保温时间的变化以及原材料的配方，实现无铅压电陶瓷的致密化烧结；本申请提供的压电陶瓷制备方法减少了K、Na等碱金属元素在高温时的挥发，有利于配方化学计量比的稳定，减少杂相的产生，从而提高陶瓷的致密度和工艺稳定性；本申请的压电陶瓷具有较高的压电性能、致密度以及机械性能，同时还具备环境友好性；本发明提供的压电陶瓷应用前景广阔，可应用于激光显示领域的光纤扫描器上被配置为致动部，该致动部利用压电陶瓷的逆压电效应，来控制致动部上的光纤进行振动扫描，从而实现激光扫描成像。