低介电常数磷酸盐微波介质陶瓷的研究进展  

Research Progress of Phosphate Microwave Dielectric Ceramics with Low Dielectric Constant

作　　者：温红娟 施思嘉 吴修胜 金正权 李栋才 曹菊芳 WEN Hongjuan;SHI Sijia;WU Xiusheng;JIN Zhengquan;LI Dongcai;CAO Jufang(School of Materials and Chemical Engeering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学材料与化学工程学院,合肥230601

出　　处：《硅酸盐通报》2023年第3期1025-1036,共12页Bulletin of the Chinese Ceramic Society

基　　金：安徽省高校协同创新项目(GXXT-2022-010);科技部重点研发项目课题(2019YFE03070001)。

摘　　要：随着电子通信行业的迅速发展,微波介质陶瓷近年来成为关注的热点。磷酸盐微波介质陶瓷通常具有烧结温度低、介电常数较低、粉体材料容易制备,以及与银不发生显著反应等特点,故可作为低温共烧陶瓷。本文概述了正磷酸盐(PO_(4))和焦磷酸盐(P_(2)O_(7))系列陶瓷几种常见的晶体结构和微波介电性能,以及PO_(4)陶瓷的掺杂和复合。研究发现,当A位元素和P元素摩尔比大于1时,制备的样品是PO_(4)与P_(2)O_(7)的混合物。PO_(4)陶瓷的掺杂本质是通过A/B位离子取代起到改进介电性能的作用。PO_(4)陶瓷的复合对性能改进的原理是原样品温度系数若为负值,则可复合TiO_(2)使温度系数接近0;原样品温度系数若为正,则复合其他温度系数为负的材料中和温度系数。最后提出了当下磷酸盐微波介质陶瓷存在的问题和研究展望。As the electronic communication industry rapidly advances,microwave dielectric ceramics become a hot topic in recent years.In general,the phosphate microwave dielectric ceramics have many advantages,such as low sintering temperature,low dielectric constant,easily prepared powder material,and no significant chemical reaction with sliver,so they could be taken as the low-temperature co-fired ceramics.In this paper,the author outlined the performance of microwave dielectric ceramics under the common structure models of the orthophosphate(PO_(4))and pyrophosphate(P_(2)O_(7))series,and doping and recombination of PO_(4) ceramics.The prepared sample is the mixture of PO_(4) and P_(2)O_(7) when the ratio of A-element and P-element molar ratio is greater than 1 in research.For the doping of PO_(4) ceramics,the A/B ions may be selected for replacement to improve the dielectric property.For the recombination of PO_(4) ceramics,the principle of performance improvement is as follows:if the temperature coefficient of original sample is the negative value,the composite TiO_(2) makes the temperature coefficient close to 0;if the value is positive,the materials with negative temperature coefficients are compounded to neutralize the temperature coefficient.Finally,the author proposed the problems existed in the phosphate microwave dielectric ceramics and looked forward to the prospect.

关 键 词：微波介质陶瓷 低介电常数 低温共烧 正磷酸盐 焦磷酸盐 PO_(4)陶瓷掺杂与复合 

分 类 号：TQ174.1[化学工程—陶瓷工业]