Piezoelectric ceramic and piezoelectric device
    4.
    发明授权
    Piezoelectric ceramic and piezoelectric device 有权
    压电陶瓷和压电器件

    公开(公告)号:US06413443B1

    公开(公告)日:2002-07-02

    申请号:US09713216

    申请日:2000-11-16

    IPC分类号: H01L41107

    摘要: The piezoelectric ceramic includes oxide represented by (Pb1−aAa)s[Zn1/3Nb2/3)w(Mn1/3B2/3)xTiyZrz]O3. A represents at least one element in the group comprising Ca, Sr and Ba. B represents at least one element in the group comprising Nb, Sb and Ta and a, s, w, x, y and z are within a range of 0≦a≦0.1, 0.9≦s

    摘要翻译: 压电陶瓷包括由(Pb1-aAa)s [Zn1 / 3Nb2 / 3)w(Mn1 / 3B2 / 3)xTiyZrz] O3表示的氧化物。 A表示包含Ca,Sr和Ba的组中的至少一种元素。 B表示包含Nb,Sb和Ta的组中的至少一种元素,a,s,w,x,y和z在0 <= a <= 0.1,0.9 <= s <1.0,0.2 < w / x <= 3.0,0.1 <= y <= 0.5和0.2 <= z <= 0.6,w + x + y + z = 1。 因此,可以容易且合理地获得高机械强度,并且在不研磨煅烧粉末或热压机的情况下也能获得优异的压电性能。

    Piezoelectric ceramics and piezoelectric device
    5.
    发明授权
    Piezoelectric ceramics and piezoelectric device 失效
    压电陶瓷和压电器件

    公开(公告)号:US06207069B1

    公开(公告)日:2001-03-27

    申请号:US09255036

    申请日:1999-02-22

    IPC分类号: C04B35491

    摘要: Manganese oxide and tantalum oxide are added to a piezoelectric ceramic composition based on lead zinc-niobate titanate zirconate. The composition is suitable for piezo-electric transformers since its mechanical quality factor (Qm) is improved without reducing its electromechanical coupling coefficient (k31), and good high-power properties and high mechanical strength are obtained. In another embodiment, manganese oxide and at least one of antimony oxide and niobium oxide are added to a piezoelectric ceramic composition based on lead zinc-niobate titanate zirconate.

    摘要翻译: 将氧化锰和氧化钽加入到基于锆钛酸铌酸铅的压电陶瓷组合物中。 该组合物适用于压电变压器,因为其机械品质因数(Qm)得到改善而不降低其机电耦合系数(k31),获得了良好的高功率特性和高机械强度。 在另一个实施方案中,将锰氧化物和氧化锑和氧化铌中的至少一种加入到基于铌酸铅锌铌酸酯钛酸酯的压电陶瓷组合物中。