Lead free piezoelectric ceramics of potassium sodium niobate and preparation thereof |
Title: |
Lead free piezoelectric ceramics of potassium sodium niobate and preparation thereof |
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Application Number: |
200410068962 |
Application Date: |
2004/07/15 |
Announcement Date: |
2005/07/27 |
Pub. Date: |
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Publication Number: |
1644562 |
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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 35/495, H01L 41/187, C04B 35/622 |
Applicant(s): |
Tsinghua Univ. |
Inventor(s): |
Li Jingfeng, Zhang Boping, Zhang Limin |
Key Words: |
Lead free, piezoelectric ceramics, potassium sodium niobate,preparation |
Abstract: |
A niobic acid potassium sodium system lead-free piezoelectric ceramic and its production are disclosed. The components of the niobic acid potassium sodium system lead-free piezoelectric ceramic are (1-n)KxNa1-xNbO3.nMH, it is prepared by SPS process. The production is carried out by grinding mixing raw materials, calcining synthesizing niobate, using SPS process for the obtained powdery material, annealing treating under oxygen atmosphere, and obtaining piezoelectric/ferroelectric ceramic materials. Its advantages include lead-free composition, good piezoelectric performance, low calcining temperature, short calcining time and fine tissue. |
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