Liquid precursor synthesis of lanthanum zirconate ceramics

2^nd International Conference and Expo on Ceramics & Composite Materials

July 25-26, 2016 Berlin, Germany

Yan Lu , Zihai Yang, Wenfeng Qiu, Yanan Sun, Zhenhua Luo, Yuanchao Li and Tong Zhao

University of Chinese Academy of Sciences, India

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Liquid precursor for Lanthanum Zirconate (La2Zr2O7) was synthesized by controlled cohydrolysis of Zr(n-OC3H7)4 and acetylacetoneâ��coordinated-yttrium compound. The liquid precursor featured adjustable viscosity and long shell life. FT-IR was measured to characterize the molecular structure of LZO to verify the coordination of acetylacetone to Zr or La atoms. TGA/DTG and XRD were utilized to investigate the thermal behavior of the precursor. The results showed the organic-to-inorganic transformation mainly happened at 450 to 800�ºC. When the ceramization completed at 900�ºC, La2Zr2O7 powders were obtained with an average crystal size of less than 20nm. The microstructure of the prepared ceramic powders characterized by SEM-EDS showed the agglomerated particulates with a mean size of less than 20�¼m and a homogeneous elements distribution of Zr and La.

Biography :

Email: luyan12@iccas.ac.cn