采用固相反应法成功制备出具有ABO_3型钙钛矿结构的锆钛钡钙(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_3无铅压电陶瓷,研究了粉体预烧温度和陶瓷片烧结温度对(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_3陶瓷结构和电学性能的影响。结果表明:当预烧温度为1200oC、烧结温度为1400oC可获得具有优异电学性能的(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_3无铅压电陶瓷,其电学性能分别为居里温度Tc=97℃,最大介电常数εmax=14920,剩余极化强度为Pr=9.96μC/cm2,矫顽场Ec=7.20 k V/cm,压电常数d33=543 p C/N,机电耦合系数kp=52%,其高的电学性能可以和铅基压电材料相媲美,表明(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_3陶瓷有望实现压电陶瓷的无铅化应用。
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