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发明授权
CN1145594C 压电陶瓷及使用了该陶瓷的压电陶瓷元件 失效 - 权利终止

压电陶瓷及使用了该陶瓷的压电陶瓷元件
摘要：
以Ca、Bi、Ti及氧组成的铋的层状化合物为主成分的压电陶瓷中，作为主成分的铋的层状化合物中的Ca、Bi及Ti的摩尔比为a∶b∶c时，满足0.15≤a/c＜0.25、且3.5≤(2a+3b)/c≤3.88的关系。
摘要（英）：

In a piezoelectric ceramic containing a bismuth layer compound containing Ca, Bi, Ti, and O, as a main component, the molar ratio of Ca to Bi to Ti in the bismuth layer compound, which is the main component, is represented by a:b:c and formulas 0.15<=a/c<0.25 and 3.5<=(2a+3b)/c<=3.88 are satisfied.

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