Effect of Zr content on microstructure of BaTi2O5 powders prepared by sol–gel method
Effect of Zr content on microstructure of BaTi2O5 powders prepared by sol–gel method
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DOI：
10.1016/j.matlet.2012.01.022
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发表时间：
2012-04
影响因子：
3
通讯作者：
Yiping Gong;Changyong Liu;Dongyun Guo;Chuanbin Wang;Q. Shen;Lianmeng Zhang
中科院分区：
文献类型：
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作者：
Yiping Gong;Changyong Liu;Dongyun Guo;Chuanbin Wang;Q. Shen;Lianmeng Zhang
采用溶胶凝胶法制备了−xO5(x=0、0.0 1、0.0 2、0.0 3和0.0 4)。研究了Zr含量和烧结温度对晶体结构和显微组织的影响。当烧结温度在1000℃及以上时，可以得到晶化良好的BaTi2O5相的−xO5粉末。随着Zr含量的增加，a、b、c轴晶格参数增大。随着烧结温度的升高，晶粒长大。在高温下(1 000℃以上)，BaZrxTi2−xO5粉末由于其单斜晶系结构而由多面体组成。
BaZrxTi2−xO5powders (x=0, 0.01, 0.02, 0.03 and 0.04) were prepared by the sol–gel method. The effect of the Zr content and sintering temperature on crystal structure and microstructure was investigated. The good-crystallization BaZrxTi2−xO5powders with BaTi2O5phase were obtained as the sintering temperature was at and above 1000°C. With increasing the Zr content, the lattice parameters of a-, b- and c-axes increased. As the sintering temperature increased, the grains grew larger. At high sintering temperature (more than 1000°C), the BaZrxTi2−xO5powders consisted of faceted grains due to its monoclinic structure.