Materials Science and Engineering: B ( IF 3.9 ) Pub Date : 2019-10-23 , DOI: 10.1016/j.mseb.2019.114438 Zhifen Fu , Can Li , Jianli Ma , Yilong Wu
Low-fired Li2Mg3SnO6 ceramics were fabricated via the conventional solid-state reaction route, and the effects of LiF-doping on their sintering mechanism and microwave dielectric properties were investigated. Sintering temperature of Li2Mg3SnO6 ceramics were effectively reduced to 900 °C due to the substitution of F− for O2−, which could cause weakening of oxygen bond strength induced reduced the intrinsic sintering temperature and facilitates the diffusion process. Low-fired ceramics inhibited volatilization of Li and improved relative density. Well-densified Li2Mg3SnO6-4 wt% LiF ceramics were obtained with optimum microwave dielectric properties of εr = 12.3, Q × f = 96280 GHz and τf = −40.7 ppm/°C at 900 °C. Such samples were compatible with Ag electrodes and suitable for LTCC applications.
中文翻译:
Li 2 Mg 3 SnO 6微波介电陶瓷的低温烧结机理
通过常规的固态反应路线制备了低烧Li 2 Mg 3 SnO 6陶瓷,研究了LiF掺杂对其烧结机理和微波介电性能的影响。李的烧结温度2的Mg 3的SnO 6个陶瓷的有效地降低到900℃,由于F的取代-代表O 2-,这可能导致的氧键强度削弱感应减小本征的烧结温度,并促进扩散过程。低烧陶瓷抑制了锂的挥发并提高了相对密度。致密的Li 2 Mg 3 SnO6 -4用的最佳微波介电性能得到重量%的LiF陶瓷ε - [R = 12.3,Q × ˚F = 96280 GHz和τ ˚F 在900℃= -40.7 PPM /℃。此类样品与银电极兼容,适用于LTCC应用。