naa a22 4500 510800726 CHVBK 20180411083354.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11664-012-2464-0 doi (NATIONALLICENCE)springer-10.1007/s11664-012-2464-0 Effect of Sintering Temperature on Microstructure, Electrical Properties, and Thermal Expansion of Perovskite-Type La0.8Ca0.2CrO3 Complex Oxides Synthesized by a Combustion Method [Elektronische Daten] [Wenfeng Guo, Yingzi Wang, Adan Li, Tifeng Jiao, Faming Gao] Perovskite-type La0.8Ca0.2CrO3 complex oxides were synthesized by a combustion method. Microstructural evolution, electrical properties, and thermal expansion behavior of the ceramics were investigated in the sintering temperature range of 1250°C to 1450°C. It was found that the electrical conductivity (σ e) remarkably improved with increasing sintering temperature from 1250°C to 1400°C, ascribed to the development of microstructural densification, whereas it declined slightly above 1400°C due to generation of excessive liquid. The specimen sintered at 1400°C had a maximum conductivity of 31.6Scm−1 at 800°C, and lowest activation energy of 0.148eV. The improvement of the thermal expansion coefficient (TEC) with increasing sintering temperature was monotonic as a result of the microstructural densification of the materials. The TEC of La0.8Ca0.2CrO3 sintered at 1400°C was about 10.5×10−6K−1, being consistent with other components as high-temperature conductors. With respect to microstructure, electrical properties, and thermal expansion, the preferable sintering temperature was ascertained to be about 1400°C, which is much lower than for the traditional solid-state reaction method. TMS, 2013 La0.8Ca0.2CrO3 nationallicence microstructure nationallicence electrical conductivity nationallicence activation energy nationallicence thermal expansion coefficient (TEC) nationallicence Guo Wenfeng Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut Wang Yingzi School of Material Science and Engineering, University of Jinan, 250022, Jinan, China aut Li Adan Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut Jiao Tifeng Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut Gao Faming Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/6(2013-06-01), 939-943 0361-5235 42:6<939 2013 42 11664 https://doi.org/10.1007/s11664-012-2464-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2464-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Guo Wenfeng Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut NATIONALLICENCE 700 1- Wang Yingzi School of Material Science and Engineering, University of Jinan, 250022, Jinan, China aut NATIONALLICENCE 700 1- Li Adan Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut NATIONALLICENCE 700 1- Jiao Tifeng Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut NATIONALLICENCE 700 1- Gao Faming Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, 066004, Qinhuangdao, China aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/6(2013-06-01), 939-943 0361-5235 42:6<939 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer