Patent ID: 11895923
Assignee: HUNAN MEICHENG CERAMIC TECHNOLOGY CO., LTD
Field: Materials, metallurgy (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 3:
4. A preparation method for preparing a lead-free piezoelectric ceramic sensor with the lead-free piezoelectric ceramic sensor material according to claim 1, comprising the following steps:
applying an electrode: cleaning the lead-free piezoelectric ceramic sensor material, and then using a screen printing technology to print a silver paste on an upper surface and a lower surface of the lead-free piezoelectric ceramic sensor material, and putting a printed silver product in the heating furnace, heating up to 800° C. for 50-60 minutes, cooling the printed silver product to the room temperature, and preparing a piezoelectric ceramic silver sheet; and
polarizing: polarizing the piezoelectric ceramic silver sheet by a direct current electric field, a polarization temperature is from 110 to 130° C., a polarization time is 30 min, and a polarization field strength is 3-6 kV/mm and preparing the lead-free piezoelectric ceramic sensor.