Synthesis and low-temperature sintering behavior of sr-doped lanthanum chromite powders

被引：0

作者：

Wei-Ming, Liu ^{[1
]}

Sheng-Li, Li ^{[1
]}

Shi-Gang, Li ^{[1
]}

Xiao, Wang ^{[1
]}

机构：

[1] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2007年 / 22卷 / 06期

关键词：

lanthanum chromite; sol-gel; rare-earth; sintering;

D O I：

暂无

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

La1-xSrxCrO3 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 La1-xSrxCrO3, 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 degrees C and a quick exothermic effect near 1350 degrees C, corresponding to the primary and intermediate sintering stage, respectively. The relative density of the sintered body (x=0.3) after sintering at 1380 degrees C is 91%, according to the procedure derived from the DSC analysis.

引用

页码：1061 / 1064

页数：4