A kind of ceramic material with high piezoelectric performance and preparation method thereof

Abstract

The invention discloses a high piezoelectric property ceramic material and a preparation method thereof. The high piezoelectric property ceramic material is prepared from the following components in parts by weight: 60-75 parts of zirconium dioxide, 20-25 parts of magnesium oxide, 2-3 parts of antimonous oxide, 2-3 parts of antimony mercaptide, 1-2 parts of silicon dioxide, 0.5-1 part of cobalt sulfate, 0.5-1 part of lead titanate and 0.05-0.5 part of potassium nitrite. The invention further provides the preparation method of the high piezoelectric property ceramic material. The preparation method comprises the following steps: (1) weighing 60-75 parts of zirconium dioxide, 20-25 parts of magnesium oxide, 2-3 parts of antimonous oxide, 2-3 parts of antimony mercaptide, 1-2 parts of silicon dioxide, 0.5-1 part of cobalt sulfate, 0.5-1 part of lead titanate and 0-1 part of copper and uniformly stirring at a high speed; and (2) sequentially adding 0.05-0.5 part of fully ball-milled potassium nitrite into the product obtained in the step 1, spraying and granulating, pressing and molding, and sintering for 2-3 hours at 1250-1280 DEG C to obtain the high piezoelectric property ceramic material.

Description

technical field [0001] The invention belongs to the field of ceramic materials, in particular to a high-voltage ceramic material and a preparation method thereof. Background technique [0002] High voltage generators use many high voltage ceramic capacitors and large capacity high voltage capacitors. Traditionally, high voltage film capacitors are generally used, but as the advantages of ceramic capacitors continue to manifest, film capacitors will appear less and less in high voltage generators. [0003] The medium usually used to produce high-voltage ceramic capacitors contains a certain amount of lead, which not only causes harm to the human body and the environment during production, use and disposal, but also has a negative impact on performance stability. [0004] Chinese patent 97117286.2 adopts solid-state method to synthesize equivalent and heterovalent ions to simultaneously replace (Sr2+, Zr4+, Sn4+, Nb5+) BaTiO3 solid solution, and add an appropriate amount of b...

AI Technical Summary

Problems solved by technology

[0003] The medium usually used to produce high-voltage electric performance ceramic capacitors contains a certain amount of lead, which not only causes harm to the human body and the environment during production, use and disposal, but also has a negative impact on performance stability

[0004] Chinese patent 97117286.2 adopts solid-state method to synthesize equivalent and heterovalent ions to simultaneously replace (Sr2+, Zr4+, Sn4+, Nb5+) BaTiO3 solid solution, and add an appropriate amount of boron-lead-zinc-copper glass sintering agent to obtain a ceramic material with a dielectric constant greater than or equal to 16000. However, due to the addition of a certain amount of lead to the ceramic material, its withstand voltage is poor, only 700V / mm