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钛酸钡基无铅压电陶瓷d33超过400
由于通过控制烧结工艺来调节钛酸钡的显微形貌可以得到很高的压电常数,另外通过寻找四方-三方准同型相界也可以获得很高的压电常数,为此,我们利用这两个有点,在钛酸钡-锆酸钡-钛酸钙构建三相三临界点与钛酸钡之间的相区内进行控制烧结,获得精细显微形貌。结果表明,通过构建这个组分和显微形貌控制,可以得到400pC/N以上的压电常数,有望在无铅换能器方面得到应用。相关结果发表在《Journal of Physics D: Applied Physics》上。
This work was financially supported by the Natural Science Foundation of China (Grant Nos 51002036, 21061004 and 50962004), by the Natural Science Foundation of Guangxi Grant Nos BA053007 and C013002) and the Projects of the Department of Science and Technology of Guangxi (Grant Nos 12118017-13, 0842003 and 09-007-02).
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