A kind of lanthanum cerium composite zirconate titanate ceramic material and preparation method thereof

Abstract

The invention discloses a composite rare earth zirconate titanate ceramic material. The chemical formula of the material is: LaxCe1-xZr0.5Ti0.5O3, where 1>x>0. The invention also discloses a preparation method of composite rare earth zirconate titanate ceramic material. When x=0.5 and the external electric field is 20V, the Ps of La0.5Ce0.5Zr0.5Ti0.5O3 ≈ 100 μC / cm2; Pr ≈60μC / cm2; Er≈700V / cm. The invention prepares a LaxCe1-xZr0.5Ti0.5O3 composite rare earth zirconate titanate ceramic material in which Pb is replaced by a composite of La and Ce, which reduces the harm of Pb to the environment and can be used in the manufacture of new piezoelectric materials.

Description

technical field

[0001] The invention relates to a composite rare earth zirconate titanate ceramic material, in particular to a lanthanum cerium composite zirconate titanate ceramic material and a preparation method thereof. Background technique

[0002] After the oxide is made into a polycrystal according to a certain preparation method, the polycrystal is subjected to polarization treatment to make it a ceramic material with piezoelectric effect, that is, piezoelectric ceramics. The biggest functional characteristic of piezoelectric ceramics is the mutual conversion of mechanical energy and electrical energy. As a high-intelligence functional electronic material, the research and development of piezoelectric ceramics has been highly valued by countries all over the world. Due to the continuous improvement of raw materials and processes, the performance of piezoelectric ceramics has been effectively developed, and its applications are becoming more and more widely. The pie...