用8-羟基喹啉(oxine)制备Ba(Mg_(1/3)Ta_(2/3))O_3粉体

Preparation of Ba(Mg 1/3 Ta 2/3 )O 3 Powder by Using Oxine

本文对用８羟基喹啉（ｏｘｉｎｅ）为螯合剂来制备Ｂａ（Ｍｇ１／３Ｔａ２／３）Ｏ３（ＢＭＴ）粉料进行了研究。就ｏｘｉｎｅ的加入量，ｐＨ值的改变对生成钽镁沉淀的产率及其粉料性能的影响进行了研究比较。结果表明：当ｏｘｉｎｅ的加入量大于ＭｇＴａ２Ｏ６摩尔数的３倍，ｐＨ值保持在１０左右时制得的钽镁粉料较为理想，其比表面积达３２ｍ２／ｇ，与ＢａＣＯ３混合后烧结温度比用传统制备法降低１８０～２５０℃。

In this paper, BMT powder prepared by using oxine was studied. Some conditions which affected the properties of powder and yield of MgTa 2O 6 precipitations, such as the pH and the amount of oxine were compared. When the mole of oxine was three times as much as MgTa 2O 6 and the pH was 10, better MgTa 2O 6 powder was obtained. Its specific surface was 32 m 2/g. When the powder was mixed with BaCO 3, its firing temperature was 180～250℃ lower than that by the conventional mixed oxide method.