수크로스 함유 분무용액으로부터 분무열분해 공정에 의한 미세 Ba-Nd-Ti-O 분말 합성

고유나; 정대수; 구혜영; 강윤찬; You Na Ko; Dae Soo Jung; Hye Young Koo; Yun Chan Kang

Korean Journal of Materials Research, Vol.20, No.3, 142-147, March, 2010

DOI10.3740/MRSK.2010.20.3.142 Export Citation

수크로스 함유 분무용액으로부터 분무열분해 공정에 의한 미세 Ba-Nd-Ti-O 분말 합성

Synthesis of Fine Ba-Nd-Ti-O Powders by Spray Pyrolysis from Spray Solution with Sucrose

고유나, 정대수 , 구혜영 , 강윤찬 ^†

건국대학교 화학공학과

You Na Ko, Dae Soo Jung , Hye Young Koo , and Yun Chan Kang^†

Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea

E-mail:

Nano-sized BaNd2Ti5O14 powders were prepared by the spray pyrolysis process. Sucrose used as the organic additive enabled the formation of nano-sized BaNd2Ti5O14 powders. The powders prepared from the spray solution without sucrose had a spherical shape, dense structure and micron size before and after calcination. However, the precursor powders prepared from the spray solution with sucrose had a large size, and hollow and porous morphology. The precursor powders had an amorphous crystal structure because of the short residence time of the powders inside the hot wall reactor. The complete decomposition of sucrose did not occur inside the hot wall reactor. Therefore, the precursor powders obtained from the spray solution with sucrose of 0.5M had a carbon content of 39.2wt.%. The powders obtained from the spray solution with sucrose of 0.5M had a slightly aggregated structure of nano-sized primary powders of BaNd2Ti5O14 crystalline phase after calcination at 1000oC. The calcined powders turned into nano-sized BaNd2Ti5O14 powders after milling. The mean size of the BaNd2Ti5O14 powders was 125 nm.

Keywords:spray pyrolysis;dielectric materials;nano powder

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Kim DY, Ju SH, Koo HY, Hong SK, Kang YC, J. Alloys Compd., 417, 254 (2006)

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[1] Ioachim A, Toacsan MI, Banciu MG, Nedelcu L, Alexandru H, Berbecaru C, Ghetu D, Stoica G, Mater. Sci. Eng. B, 109, 183 (2004)

[2] Ratheesh R, Sreemoolanadhan H, Sebastian MT, Mohanan P, Ferroelect., 211, 1 (1998)

[3] Lu CH, Huang YH, Mater. Sci. Eng. B, 98, 33 (2003)

[4] Fu YP, Liu CW, Lin CH, Hsieh CK, Cetram. Int., 31, 667 (2005)

[5] Jung BH, Hwang SJ, Kim HS, J. Eur. Ceram. Soc., 25, 3187 (2005)

[6] Kim DE, Lee SM, Kim HT, Kim HS, J. Kor. Ceram. Soc., 44, 110 (2007)

[7] Zheng H, Reaney IM, Muir D, Price T, Iddles DM, J. Eur. Ceram. Soc., 27, 4479 (2007)

[8] Dernovsek O, Naeini A, Preu G, Wersing W, Eberstein M, Schiller WA, J. Eur. Ceram. Soc., 21, 1693 (2001)

[9] Cho IS, Kim DW, Kim JR, Hong KS, Ceram. Int., 30, 1181 (2004)

[10] Xu YB, Chen XM, Wu YJ, J. Am. Ceram. Soc., 83(11), 2893 (2000)

[11] Kwon SW, Yoon DH, J. Eur. Ceram. Soc., 27, 247 (2007)

[12] Vinothini V, Singh VP, Balasubramanian M, Ceram. Int., 32, 99 (2006)

[13] Guo L, Luo H, Gao J, Guo L, Yang J, Mater. Lett., 60, 3011 (2006)

[14] Xu H, Gao L, Mater. Lett., 58, 1582 (2004)

[15] Peng Z, Chen Y, Microelectron. Eng., 66, 102 (2003)

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