Synthesis and Low-temperature Sintering Behavior of Sr-doped Lanthanum Chromite Powders

doi:10.3724/SP.J.1077.2007.01061

Abstract

Abstract: La_1-x Sr_xCrO₃ powders were synthesized by a sol-gel method and sintered at a low temperature. The powders and sintered pellets were characterized by XRD, TEM, DSC and SEM. It is found that the mean particle size is below 50nm. The powder with x=0 and 0.1 of single phase of La_1-_x Sr_xCrO₃, and another phase SrCrO₄ appears with x=0.3. Lattice distorts and lattice parameters of lanthanum chromite decrease with increasing Sr content. The sintering process of lanthanum chromite can be divided into two stages: a slow exothermic effect below 1200℃ and a quick exothermic effect near 1350℃, corresponding to the primary and intermediate sintering stage, respectively. The relative density of the sintered body (x=0.3) after sintering at 1380℃ is 91％, according to the procedure derived from the DSC analysis.

Key words: lanthanum chromite, sol-gel, rare-earth, sintering

CLC Number:

TB383
TF12

LIU Wei-Ming,LI Sheng-Li,LI Shi-Gang,WANG Xiao. Synthesis and Low-temperature Sintering Behavior of Sr-doped Lanthanum Chromite Powders[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.01061.

[1]	WANG Kanglong, YIN Jie, CHEN Xiao, WANG Li, LIU Xuejian, HUANG Zhengren. Effect of Particle Grading on Properties of Silicon Carbide Ceramics Prepared by Selective Laser Sintering Printing Combined with Solid-phase Sintering at Atmospheric Pressure [J]. Journal of Inorganic Materials, 2024, 39(7): 754-760.
[2]	LIU Yan, QIN Xianpeng, GAN Lin, ZHOU Guohong, ZHANG Tianjin, WANG Shiwei, CHEN Hetuo. Preparation of Sub-micron Spherical Y₂O₃ Particles and Transparent Ceramics [J]. Journal of Inorganic Materials, 2024, 39(6): 691-696.
[3]	WANG Weiming, WANG Weide, SU Yi, MA Qingsong, YAO Dongxu, ZENG Yuping. Research Progress of High Thermal Conductivity Silicon Nitride Ceramics Prepared by Non-oxide Sintering Additives [J]. Journal of Inorganic Materials, 2024, 39(6): 634-646.
[4]	ZHENG Bin, KANG Kai, ZHANG Qing, YE Fang, XIE Jing, JIA Yan, SUN Guodong, CHENG Laifei. Preparation and Thermal Stability of Ti₃SiC₂ Ceramics by Polymer Derived Ceramics Method [J]. Journal of Inorganic Materials, 2024, 39(6): 733-740.
[5]	ZHENG Yawen, ZHANG Cuiping, ZHANG Ruijie, XIA Qian, RU Hongqiang. Fabrication of Boron Carbide Ceramic Composites by Boronic Acid Carbothermal Reduction and Silicon Infiltration Reaction Sintering [J]. Journal of Inorganic Materials, 2024, 39(6): 707-714.
[6]	SHEN Bin, ZHANG Xu, XIONG Huai, LI Haiyuan, XIE Xinglong. Preparation and Optical Properties of Sol-Gel SiO₂ Antireflective Films [J]. Journal of Inorganic Materials, 2024, 39(5): 525-530.
[7]	LÜ Zhaoyang, XU Yong, YANG Jiuyan, TU Guangsheng, TU Bingtian, WANG Hao. Effect of MgF₂ Additive on Preparation and Optical Properties of MgAl_1.9Ga_0.1O₄ Transparent Ceramics [J]. Journal of Inorganic Materials, 2024, 39(5): 531-538.
[8]	ZHANG Tingting, WANG Fangyuan, LIU Changyou, ZHANG Guorong, LÜ Jiahui, SONG Yuchen, JIE Wanqi. Hydrothermal-sintering Preparation of Cr²⁺:ZnSe/ZnSe Nanotwins with Core-shell Structure [J]. Journal of Inorganic Materials, 2024, 39(4): 409-415.
[9]	LI Zhongshao, LI Ming, CAO Xun. Broadband-modulated Photochromic Smart Windows Based on Oxygen-containing Gadolinium Hydride Films [J]. Journal of Inorganic Materials, 2024, 39(4): 441-448.
[10]	JIANG Qiang, SHI Lizhi, CHEN Zhengran, ZHOU Zhiyong, LIANG Ruihong. Preparation and Properties of Hard PZT Piezoelectric Ceramics Poled above Curie Temperature and Multilayer Actuators [J]. Journal of Inorganic Materials, 2024, 39(10): 1091-1099.
[11]	PENG Ping, TAN Litao. Structure and Piezoelectric Properties of CuO-doped (Ba,Ca)(Ti,Sn)O₃ Ceramics [J]. Journal of Inorganic Materials, 2024, 39(10): 1100-1106.
[12]	WANG Bo, CAI Delong, ZHU Qishuai, LI Daxin, YANG Zhihua, DUAN Xiaoming, LI Yanan, WANG Xuan, JIA Dechang, ZHOU Yu. Mechanical Properties and Thermal Shock Resistance of SrAl₂Si₂O₈ Reinforced BN Ceramic Composites [J]. Journal of Inorganic Materials, 2024, 39(10): 1182-1188.
[13]	DAI Le, LIU Yang, GAO Xuan, WANG Shuhao, SONG Yating, TANG Mingmeng, DMITRY V Karpinsky, LIU Lisha, WANG Yaojin. Self-polarization Achieved by Compositionally Gradient Doping in BiFeO₃ Thin Films [J]. Journal of Inorganic Materials, 2024, 39(1): 99-106.
[14]	KE Xin, XIE Bingqing, WANG Zhong, ZHANG Jingguo, WANG Jianwei, LI Zhanrong, HE Huijun, WANG Limin. Progress of Interconnect Materials in the Third-generation Semiconductor and Their Low-temperature Sintering of Copper Nanoparticles [J]. Journal of Inorganic Materials, 2024, 39(1): 17-31.
[15]	LI Junsheng, ZENG Liang, LIU Rongjun, WANG Yanfei, WAN Fan, LI Duan. Functional Strontium Tantalum Oxynitride Ceramics: Efficient Synthesis, Densification and Dielectric Performance [J]. Journal of Inorganic Materials, 2023, 38(8): 885-892.

Synthesis and Low-temperature Sintering Behavior of Sr-doped Lanthanum Chromite Powders

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments