摘要
采用微波加热法于1100℃保温30 min(升温速率为20℃/min)合成Ba6–3xNd8+2xTi18O54(x=0.30～0.75,BNT)陶瓷粉末,再添加质量分数45%的B2O3-SiO2-CaO-MgO(BM)玻璃,在马弗炉中于900℃烧结2 h制得BNT陶瓷。研究了所制陶瓷的微观结构及性能。结果表明:微波加热实现了BNT陶瓷的低温快速合成;x=0.67时的BNT陶瓷加BM玻璃烧结后综合性能最佳:相对介电常数εr=38.3,介质损耗tanδ=19×10–4,抗弯强度σf=106.1MPa,热导率λ=2.684 W/(m.K)。
Ba_（6-3x）Nd_（8＋2x）Ti_（18）O_（54）（x=0.30～0.75,BNT） ceramics were synthesized by microwave sintering at 1 100 ℃ for 30 min with the heating rate 20 ℃ per min.Then,BNT ceramics were sintered at 900 ℃ for 2 h by doping 45%（mass fraction） B2O3-SiO2-CaO-MgO（BM） glass in the muffle furnace.The microstructure and properties of BNT ceramics were analyzed.The results indicate that BNT ceramics can be quickly synthesized at low temperature by microwave sintering,and BNT ceramics possess the best properties at x=0.67,with the relative permittivity（εr） of 38.3,dielectric loss（tanδ） of 19×10–4,flexural strength（σf） of 106.1 MPa,and thermal conductivity（λ） of 2.684 W/（m·K）.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2011年第10期15-18,共4页
Electronic Components And Materials
