Decomposition reactions in CaCu3Ti4O12 ceramics
Decomposition reactions in CaCu3Ti4O12 ceramics
复制标题
DOI：
10.1111/j.1551-2916.2006.01174.x
复制
发表时间：
2006-09-01
影响因子：
3.9
通讯作者：
West, Anthony R.
中科院分区：
文献类型：
--
作者：
Adams, Timothy B.;Sinclair, Derek C.;West, Anthony R.
在1115 ℃空气中烧结3和24 h的CaCu 3 Ti4 O 12（CCTO）陶瓷在1000 ℃的N-2中进行了热处理。在陶瓷的外部区域上形成表面层，并且X射线衍射和分析电子显微镜的组合已被用于建立层的相含量。一个模型来解释的表面层的形成提出了基于分解成CaTiO 3，TiO 2，和CuO的混合物的CTO。有限分解的作用，在发展中的电不均匀的CCTO陶瓷在空气中高温制备进行了讨论。
CaCu3Ti4O12 (CCTO) ceramics sintered in air at 1115 degrees C for 3 and 24 h have been heat treated in N-2 at 1000 degrees C. Surface layers develop on the outer regions of the ceramics, and a combination of X-ray diffraction and analytical electron microscopy has been used to establish the phase content of the layers. A model to explain the formation of the surface layers is proposed based on decomposition of CCTO into a mixture of CaTiO3, TiO2, and Cu2O. The role of limited decomposition in the development of electrically inhomogeneous CCTO ceramics prepared at elevated temperatures in air is discussed.