利用DTA／TGA、XRD、SEM等分析手段，研究了不同起始原料制备的BMT合成过程及其烧结行为，发现以Ta2O5·xH2O为起始原料，可减少合成过程中产生的中间相，在较低的温度下合成单相BMT，改善了其烧结性．
Ba(Mg1/3Ya2/3)O3 solid-state formation reactions and its sinterability were studied in relation with different raw materials, Ta2O5·xH2O and T2O5 raw materials with different
phase structure and grain size were employed as the source Ta2O5, along with BCO3 and MgO. The experiment results indicated that the adoption of
Ta2O5·xH2O can retard the intermediate phase and leads to more complete reaction at lower temperature than that with Ta2O5, which is
due to the local stoichiometric homogeneities of the mixed powder and the phase transformation Ta2O5 from Ta2O5·xH2O. The sinterability
of the powder prepared from Ta2O5·xH2O is much better than that of the powder from Ta2O5.
参考文献
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