本文選題：水熱反應(yīng)法 + 鋯鈦酸鋇鈣　； 參考：《硅酸鹽學(xué)報(bào)》2017年09期

【摘要】：通過(guò)水熱反應(yīng)法低溫?zé)Y(jié)制備Ba_(0.85)Ca_(0.15)Zr_(0.1)Ti_(0.9)O_3(BCZT)無(wú)鉛壓電陶瓷,研究了燒結(jié)溫度和時(shí)間對(duì)BCZT陶瓷的晶體結(jié)構(gòu)和電學(xué)性能的影響。與固相反應(yīng)法相比,由于水熱法制備的BCZT前驅(qū)體的高活性,可以低溫?zé)Y(jié)制備BCZT陶瓷,低溫?zé)Y(jié)制備的BCZT陶瓷呈現(xiàn)純鈣鈦礦結(jié)構(gòu)、較為均勻的小晶粒微觀形貌(小于10μm)和更高的致密度。通過(guò)水熱法制備的BCZT陶瓷呈現(xiàn)優(yōu)良的電學(xué)性能,其介電響應(yīng)特征接近正常鐵電體、又呈現(xiàn)一定的頻率色散現(xiàn)象。1 340℃燒結(jié)18 h制備的BCZT陶瓷的剩余極化強(qiáng)度最大,Pr=6.84μC/cm2。1 320℃燒結(jié)18 h制備的BCZT陶瓷壓電性能最佳,d33達(dá)到最大值213 p C/N。
[Abstract]:Lead-free BCZT piezoelectric ceramics were prepared by hydrothermal sintering at low temperature. The effects of sintering temperature and time on the crystal structure and electrical properties of BCZT ceramics were studied. Compared with solid state reaction, BCZT ceramics can be sintered at low temperature because of the high activity of BCZT precursor prepared by hydrothermal method. The BCZT ceramics prepared by low temperature sintering have pure perovskite structure. The smaller grain morphology (less than 10 渭 m) and higher density were obtained. The BCZT ceramics prepared by hydrothermal method have excellent electrical properties and the dielectric response characteristics are close to those of normal ferroelectrics. The maximum residual polarization strength of BCZT ceramics sintered at 1.340 鈩，

本文編號(hào)：1835372