Title:
LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD FOR MANUFACTURING LEAD-FREE PIEZOELECTRIC CERAMIC
Document Type and Number:
WIPO Patent Application WO/2022/177262
Kind Code:
A1
Abstract:
Disclosed are a BCTZ-based lead-free piezoelectric ceramic composition that provides high piezoelectric properties and speaker properties, and a method for manufacturing a BCTZ-based lead-free piezoelectric ceramic. The disclosed method for manufacturing a lead-free piezoelectric ceramic comprises the steps of: preparing a mixture in which copper oxide is added to a BCTZ-based base material; and sintering the mixture at a temperature of 1300°C to 1600°C for 1 hour to 5 hours, wherein the weight ratio of the copper oxide in the mixture is 0.6 wt%.
Inventors:
SUNG TAE-HYUN (KR)
KIM KYUNG BUM (KR)
KIM KYUNG BUM (KR)
Application Number:
PCT/KR2022/002209
Publication Date:
August 25, 2022
Filing Date:
February 15, 2022
Export Citation:
Assignee:
IUCF HYU (KR)
International Classes:
H01L41/187; C04B35/468; H01L41/47
Foreign References:
| KR20200037483A | 2020-04-09 | |||
| KR20130090696A | 2013-08-14 | |||
| JP2019029671A | 2019-02-21 | |||
| KR20170081979A | 2017-07-13 |
Other References:
TAO CHEN; TING ZHANG; GUANGCHANG WANG; JIFANG ZHOU; JIANWEI ZHANG; YUHONG LIU: "Effect of CuO on the microstructure and electrical properties of BaCaTiZrOpiezoceramics", JOURNAL OF MATERIALS SCIENCE, KLUWER ACADEMIC PUBLISHERS, BO, vol. 47, no. 11, 24 February 2012 (2012-02-24), Bo , pages 4612 - 4619, XP035027056, ISSN: 1573-4803, DOI: 10.1007/s10853-012-6326-1
Attorney, Agent or Firm:
MIN, Young Joon (KR)
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