Browse > Article
http://dx.doi.org/10.4191/KCERS.2009.46.2.200

Effect of Milling Condition on Low-temperature Sinterability and Electrical Properties of BaTiO3 Ceramics  

Hong, Min-Hee (Material Development Group, LCR Division, Samsung Electro-Mechanics)
Sohn, Sung-Bum (Material Development Group, LCR Division, Samsung Electro-Mechanics)
Kim, Young-Tae (Material Development Group, LCR Division, Samsung Electro-Mechanics)
Hur, Kang-Heon (LCR Development Team, LCR Division, Samsung Electro-Mechanics)
Publication Information
Journal of the Korean Ceramic Society / v.46, no.2, 2009 , pp. 200-210 More about this Journal
Abstract
It is necessary to minimize the mismatch of sintering shrinkage between dielectric ceramic and Ni inner electrode layers for the purpose of developing the ultra high-capacity multi layered ceramic condenser(MLCC). Thus, low temperature sintering of dielectric $BaTiO_3$ ceramic should be precedently investigated. In this work, the influence of the milling condition on sintering behavior and electrical properties of $BaTiO_3$ ceramics was investigated in the $BaTiO_3$(BT)-Mg-Dy-Mn-Ba system with borosilicate glass as a sintering agent. As milling time increased, specific surface area(SSA) of the powder increased linearly, while both sinterability and dielectric property were found to be drastically decreased with an increasing SSA. It was also revealed that the sinterability of the excessively milled $BaTiO_3$ ceramics could be recovered by increasing Ba content, rather than increasing glass addition. These results suggest that the sintering behavior of $BaTiO_3$ ceramics under the high SSA was more strongly dependent on the transient liquid phase caused by Ba addition, than the liquid phase from additional glass.
Keywords
MLCC; $BaTiO_3$; Low temperature sintering; Milling;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 Y. Sakabe, “Recent Progress on Multilayer Ceramic Capacitors,” MRS Int. Meet. Adv. Mater. 10 119-29 (1989).
2 X. H. Wang, R. Z. Chen, Z. L., and Gui, L. T. Li, “The Grain Size Effect on Dielectric Properties of $BaTiO_3$ Based Ceramics,” Mater. Sci. Eng., B99 199-202 (2003).   DOI   ScienceOn
3 H. Kishi, Y. Mizuno, and H. Chazono, “Base-metal Electrode- multilayer Ceramic Capacitors : Past, Present and Future Perspectives,” Jpn. J. Appl. Phys., 42 1-15 (2003).   DOI
4 Y. Sakabe, Y. Hamaji, H. Sano, and N. Wada, “Effects of Rare-earth Oxides on Reliability of X7R Dielectrics,” Jpn. J. Appl. Phys., 41 5668-73 (2002).   DOI
5 H. Koutaro, “Development of Materials for MLCC with Ni,” SYRI seminar (2002.11.05).
6 Y. Mizuno, T. Hagiwara, H. Chazono, and H. Kishi, “Effect of Milling Process on Core-shell Microstructure and Electrical roperties for $BaTiO_3$-based Ni-MLCC,” J. Euro. Ceram. Soc., 21 1649-52 (2001).   DOI   ScienceOn
7 C. H. Kim, K. J. Park, Y. J. Yoon, D. S. Sinn, Y. T. Kim, and K. H. Hur, “Effect of Milling Condition on the Formation of Core-shell Structure in $BaTiO_3$ Grains,” J. Euro. Ceram. Soc., 28 [13] 2589-96 (2008).   DOI   ScienceOn
8 R. M. German, Liquid phase sintering, pp 13-39, Plenum press, New York, 1985.
9 S. I. Jang, H.M. Jang, “Structure and Electrical Properties of Boron-added (Ba, Sr)$TiO_3$ Thin Films Fabricated by the Sol-gel Method,” Thin Solid Films, 330 89-95 (1998).   DOI   ScienceOn
10 J. K. Lee, Sintering of ceramics, pp.88~89, Bando press, 1994.
11 S. H. Yoon, Y. S. Park, C. J. Lee, and J. O. Hong, “Development of X7R Composition Based on SBT03-Dy System,” pp.1-23, SEMCO 2005 Technical report, 2005.
12 S. B. Sohn, S. M. Song, and S. Y. Ahn, “Effect of Borosilicate Glass Composition on the Sintering Properties and Reliability of $BaTiO_3$ Ceramics,” pp.1-15, SEMCO 2005 Technical report, 2005.