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发明公开
CN1702055A 一种织构铌酸盐无铅压电材料及其制备方法 失效 - 权利终止

一种织构铌酸盐无铅压电材料及其制备方法
摘要：
一种织构型铌酸盐无铅压电陶瓷材料及其制备方法。该陶瓷的主要化学组成是(K0.44Na0.52Li0.04) (Nb0.84Ta0.10Sb0.06)O3，其中掺入1～30vol％的(001)晶面取向片状SrTiO3模板材料。制法为：先将KHCO3，NaHCO3，Li2CO3，Nb2O5，Ta2O5以及Sb2O5粉料按化学计量比配料，加入乙醇球磨，然后烘干；烘干后的物料加入黏结剂压成块状预烧；预烧后粉碎研磨后，加入溶剂、分散剂和塑性剂，球磨后加入粘结剂再球磨，加入SrTiO3模板材料后搅拌得浆料，除泡后流延成型，干燥后叠层压制成型；样品经过冷等静压后升温排塑，然后在氩气气氛下热压处理，再于空气气氛下烧结，即制得织构化铌酸盐无铅压电陶瓷。该陶瓷的压电性能得到较大幅度的提高。
摘要（英）：

The invention relates a texture-type niobate leadless piezoelectric ceramic material and its preparation method. Said ceramic material, which is mixed with 1í½30molúÑ of surface orientation sheet-like formwork material, mainly contains (K0.44Na0.52Li0.04)(Nb0.84Ta0.10Sb0.06)O3. The method for making comprises the following steps: according to stoichiometric ratio mixing powders of KHCO3, NaHCO3, Li2CO3, Nb2O5, Ta2O5 and Sb2O5; adding alcohol to mixture to be processed in ball mill; drying it and adding adhesive to it; pressing it to block and presintering; comminuting and grinding; and so on. The invention can increase piezoelectric performance greatly.

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