Method of increasing property of bismuth sodium titanate base lead-free piezoelectric ceramic |
Title： |
| Method of increasing property of bismuth sodium titanate base lead-free piezoelectric ceramic |
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Application Number： |
200710099954 |
Application Date： |
2007/06/01 |
Announcement Date： |
2007/10/24 |
Pub. Date： |
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Publication Number： |
101058505 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C04B 35/475C04B 35/462C04B 35/632C04B 35/64H01L 41/187 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Li Jingfeng, Peng Chune, Zhang Yaru, Wang Ke, Zhen Yuhua, Morikei Keitaro, Shimizu Michihiko |
Key Words： |
property, bismuth sodium titanate, lead-free, piezoelectric ceramic |
Abstract： |
The invention discloses an improving method of bismuth sodium titanate based non-lead piezo-electric ceramic property, which is characterized by the following: the oxide with Bi is added in the synthesizing course with molecular formula at (1-y) (Bi0. 5+xNa0. 5) TiO3+y (Bi0. 5+xK0. 5) TiO3, wherein x is molar percentage of Bi in the non-supplement (1-y) (Bi0. 5Na0. 5) TiO3+y (Bi0. 5K0. 5) TiO3, which is between 0 and 2. 0%; y is molar weight of (Bi0. 5+xK0. 5)TiO3, which is between 0 and 30%. The piezo-electric property of (Bi0. 5Na0. 5) TiO3 can be improved obviously with piezo-electric number to 196pC/N, which is fit for BNT monomer ceramic and BNT-BKT binary system. |
Claim： |
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Priority： |
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PCT： |
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