By synthesizing reactive powders via a self-sustaining combustion synthesis, the EDTA-nitrate process, Sm0.15Gd0.05Ce0.8O1.9 was prepared. The resultant powders were dispersed with the terpineol as the dispersant by different methods such as ball milling and high-shear dispersing. Coagulation factor (CF) was adopted to denote the agglomeration degree of nano-scale SGDC in this work. The effect of agglomeration on the densification behaviors at different sintering temperatures was investigated. The studies indicate that agglomeration retards densification in the stage of sintering. The powders with better dispersion exhibit a higher sintered density at the same temperature. After effective dispersion measures taken, SGDC can fully densified at the sintering temperature of 1300℃. The densification temperature is significantly lower than those reported previously.
LUO Dan
,
LUO Zhong-Yang
,
YU Chun-Jiang
. Effect of Agglomeration on the Densification Properties of Sm0.15Gd0.05Ce0.8O1.9 Electrolytes for Intermediate Temperature Solid Oxide Fuel Cells[J]. Journal of Inorganic Materials, 2007
, 22(6)
: 1041
-1045
.
DOI: 10.3724/SP.J.1077.2007.01041
[1] 李松丽, 王绍荣, 聂怀文, 等(LI Song-Li, et al). 无机材料学报(Journal of Inorganic Materials), 2006, 21 (5): 1121--1126.
[2] 杨乃涛, 孟秀霞, 谭小耀, 等(YANG Nai-Tao, et al). 无机材料学报(Journal of Inorganic Materials), 2006, 21 (2): 409--414.
[3] Nguyen Q. Solid State Ionics, 2004, 174: 271--277.
[4] Tietz F, Buchkremer H.-P, Stover D, et al. Solid State Ionics, 2002, 152: 373--381.
[5] Ji-Guang Li, Takayasu Ikegami, Toshiyuki Mori, et al. Acta Materialia, 2004, 52: 2221--2228.
[6] Alexander Alexandrovich Gromov, Ulrich Forter-Barth, Ulrich Teipel, et al. Powder Technology, 2006, 164: 111--115.
[7] Van herle, Horita T, Kawada T, et al. Solid State Ionics, 1996, 86: 1255--1258.
[8] Xia C, Liu M, et al. Solid State Ionics, 2002, 152-153: 423--430.
[9] Reiss I, Brounshitein D, Tannhauser D S, et al. J. Am. Ceram. Soc., 2001, 64: 479--486.
[10] Huang K, Feng M, Goodenough J B, et al. J. Am. Ceram. Soc., 1998, 81 (2): 357--362.
[11] Yamashita K, Ramanujachary K V, Hreenblattm, et al. Solid State Ionics, 1995, 181 (2): 53--60.
[12] Mather G C, Figueiredo F M, Jurado J R, et al. Solid State Ionics, 2003, 162: 115--120.
[13] Ringuede A, Labrincha J A, Frade J R. Solid State Ionics, 2001, 141-142: 549--557.
[14] Ruiz F, Perez-Robles, Gonzalez J, et al. Material letters, 2000, 42: 25--32.
