Method of manufacturing piezoelectric materials
    31.
    发明授权
    Method of manufacturing piezoelectric materials 失效
    制造压电材料的方法

    公开(公告)号:US6156259A

    公开(公告)日:2000-12-05

    申请号:US540028

    申请日:1995-10-06

    摘要: In a method of manufacturing piezoelectric ceramics by molding pre-fired or calcined powders of ingredients of a piezoelectric ceramic material and sintering the powder mold at a high pressure, the powder mold is pre-sintered at an atmospheric pressure before sintering at high pressure (HIP). Preferably, after the sintering HIP step, a thermal treatment is performed at a temperature of from 500 to 1000.degree. C. under an oxidizing atmosphere. For a Pb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 --PbTiO.sub.3 based piezoelectric ceramic, the composition is preferably set to (Pb.sub.1-x Ba.sub.x)[(Zn.sub.1/3 Nb.sub.2/3).sub.1-y Ti.sub.y ]O.sub.3, where 0.001

    摘要翻译: 在通过模制压电陶瓷材料的预成型或煅烧粉末并在高压下烧结粉末模具来制造压电陶瓷的方法中,在高压烧结(HIP)之前将粉末模具在大气压下预烧结 )。 优选在烧结HIP工序后,在氧化气氛下,在500〜1000℃的温度下进行热处理。 对于Pb(Zn1 / 3Nb2 / 3)O3-PbTiO3基压电陶瓷,组合物优选设定为(Pb1-xBax)[(Zn1 / 3Nb2 / 3)1-yTiy] O3,其中0.001