PURPOSE: A method for manufacturing a Pb-free piezoelectric (Na0.5+χK0.5-χ)(Nb0.55Ta0.45)O3 ceramic composition is provided to obtain a sintered material with 95% of apparent density.;CONSTITUTION: A Pb-free piezoelectric (Na0.5+χK0.5-χ)(Nb0.55Ta0.45)O3 ceramic composition contains a composition of (Na0.5+xK0.5-x)(Nb0.55Ta0.45)O3 as a main ingredient (x is greater than 0 and is less than 0.05). A method for manufacturing the ceramic composition comprises: a step of milling Na2CO3, K2CO3, Nb2O5, and Ta2O5 powder using anhydrous ethanol; a step of drying the powder in an oven at 90-110 deg. C and calcining at 800 deg. C for 5 hours; a step of repeating milling and drying and secondarily calcining at 850 deg. C for 5 hours; a step of performing wet-milling the calcinated powder and drying; a step of mixing the powder with 0.5 wt% of a polyvinyl alcohol(PVA) binder and sieving; and a step of molding and sintering at 1150-1250 deg. C for 4 hours.;COPYRIGHT KIPO 2013
展开▼
机译：目的：提供一种无铅压电（Na0.5 +×K0.5-chi）（Nb0.55Ta0.45）O3陶瓷组合物的制造方法，以获得表观密度为95％的烧结材料。组成：无铅压电（Na0.5 +×K0.5-chi）（Nb0.55Ta0.45）O3陶瓷组合物包含（Na0.5 + xK0.5-x）（Nb0.55Ta0 .45）O3作为主要成分（x大于0且小于0.05）。该陶瓷组合物的制造方法包括：使用无水乙醇研磨Na 2 CO 3，K 2 CO 3，Nb 2 O 5和Ta 2 O 5粉末的步骤。在90-110度的烤箱中干燥粉末的步骤。 C并在800℃下煅烧。 C持续5小时;重复研磨和干燥，然后在850℃下煅烧的步骤。 C持续5小时;将煅烧的粉末湿磨并干燥的步骤;将粉末与0.5重量％的聚乙烯醇（PVA）粘合剂混合并过筛的步骤;在1150-1250度的温度下进行成型和烧结的步骤。 C 4小时。; COPYRIGHT KIPO 2013
展开▼
