液相混合法合成Ba_2Ti_9O_(20)研究  

Preparation of Ba_2Ti_9O_(20) Via the Liquid Mixing Method

作　　者：何艳艳[1] 唐霞辉[1] 周毅[1] 曾春莲[2] 

机构地区：[1]华中理工大学激光技术国家重点实验室,武汉430074 [2]中山大学高分子研究所,广州510275

出　　处：《无机材料学报》2001年第6期1139-1143,共5页Journal of Inorganic Materials

摘　　要：以ＥＤＴＡ为络合剂，乙二醇为酯化剂，利用液相混合法，合成了单相的Ｂａ２Ｔｉ９Ｏ２０利用ＤＴＡ、ＴＧ、ＸＲＤ和Ｒａｍａｎ光谱等技术表征了树脂中间体和由此得到的氧化物粉末．Ｂａ２Ｔｉ９Ｏ２０相在１０００℃开始出现，在１１００℃变成主相．在１２００℃可得到单相的ＢａＴｉ9Ｏ20.该方法简单易行，不需要低温条件或保护性气氛，也不需要长时间热处理．The liquid mixing method by using ethylenediaminetetraacetic acid as a chelating agent to prepare Ba2Ti9O20 was reported. The resin precursors were prepared and heated at 700℃ to 1200℃ in air. XRD was used to determine the phase transformations as a function of temperature. Single-phase Ba2Ti9O20 was obtained at l200℃, without the prolonged heat treatment time. DTA, TG and Raman spectra were used to characterize the precursors and derived oxide powders, respectively

关 键 词：Ba2Ti9O20 EDTA 合成 液相混合法 钛酸钡 络合剂 

分 类 号：TM223[一般工业技术—材料科学与工程]