Phase formation and microstructure of PbTiO₃ and CaTiO₃ ceramics prepared by a direct current arc discharge technique

ABSTRACT

PbTiO₃ and CaTiO₃ ceramics are prepared at temperatures above 2000°C by a direct current arc discharge technique under an argon atmosphere, and the microstructure, components and morphology of each material are investigated. Both samples show the formation of a perovskite structure. Moreover, a tetragonal phase is found in the PbTiO₃ ceramic material, and a cubical phase is formed in the CaTiO₃ ceramic material. In this work, PbTiO₃ and CaTiO₃ ceramics were rapidly prepared using a simple DC arc discharge technique; we found this technique of ceramic material synthesis was much faster and better than conventional methods. The whole reaction process only takes 30 seconds because of ultrafast kinetics of crystallization.

KEYWORDS:

• Ceramics
• microstructure
• PbTiO₃
• CaTiO₃

Funding

This work was supported by the National Natural Science Foundation of China (No. 21176243).