BaTiO<sub>3</sub>분말의 수열합성 해석

오정강; 서경원

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.4, 509-514, June, 1999

Export Citation

BaTiO₃분말의 수열합성 해석

Interpretation of Hydrothermal Synthesis of BaTiO₃ Powder

오정강, 서경원

초록

수열합성법을 이용한 BaTiO₃ 미세분말제조시 반응시간, 출발물질농도와 교반속도 등이 입자의 결정성, 평균입경과 입도분포에 미치는 영향을 조사하였다. 실험결과 기존의 핵생성-입자성장 모델과는 상이하게도 반응시간과 교반속도가 증가할수록 또는, 출발물질의 농도가 감소할수록 입자크기는 감소하였으며, 입도분포도 좁았다. 이로부터 BaTiO₃ 결정입자는 수열합성시 용해, 가수분해-축합반응, 침전, 응집, 확산, 전이 등의 복합적인 반응경로를 거치는 것으로 판단되었다.

In Preparing BaTiO₃ powder under hydrothermal conditions, effects of reaction period feedstock concentration and mixing rate on crystallinity, mean size and size distribution of particles were studied. Experimental results showed that the particle size became smaller with its narrow distribution as the reaction period and mixing rate increased, but feedstock concentration decreased in contrast with the results based on the classical nucleation-growth model. From these results, BaTiO₃ particles seem to be prepared hydrothermally through a multiple reaction procedure that includes dissolution, precipitation, hydrolysis-condensation, aggregation, diffusion and transformation.

Keywords:BaTiO₃;Hydrothermal;Multiple reaction procedure

[References]

Kuwabara M, J. Am. Ceram. Soc., 64, 639 (1981)
Ueoka H, Yodogawa M, IEEE Transmanuf. Tech., MFT-3[2], 77 (1974)
Meauger A, Mutin JC, Miepce JC, J. Mater. Sci., 42, 212 (1983)
Hennings D, Rosenstein G, Schreinemacher H, J. Eur. Ceram. Soc., 8, 107 (1991)
Nielsen AE, "Kinetics of Precipitation," Pergamon, Oxford (1969)
Look JL, Zukoski CF, J. Am. Ceram. Soc., 78, 21 (1995)
Herl W, J. Am. Ceram. Soc., 71, 879 (1988)
Kondo M, Shnozaki K, Ooki R, Mizutami N, J. Ceram. Soc. Jpn., 102, 742 (1994)
Mullin JW, "Crystallization," 2nd ed., p. 184, Butterworths Heinemann, Oxford (1972)
Eror NG, Loehr TM, Cornilsen BC, Ferroelectrics, 28, 321 (1980)
Uchino K, Sadanaga E, Hirose T, J. Am. Ceram. Soc., 72, 155 (1989)
오정강, 서경원, "PTC-BaTiO₃ 반도체 제조용 고순도 분말의 합성," 화학공학, 제출중
오정강, 서경원, 화학공학의 이론과 응용, 4, 3993 (1998)
Dutty TRN, Vivekanandan R, Murugaraj P, Mater. Chem. Phys., 19, 533 (1988)
Park HK, Kim DK, Kim CH, J. Am. Ceram. Soc., 80, 743 (1997)
Asiaie R, Zhu W, Akbar SA, Dutta PK, Chem. Mater., 8, 226 (1996)
Kondo M, Shinozaki Z, Ooki R, Mizutani N, J. Ceram. Soc. Jpn., 102, 742 (1994)
Eckert JO, Hung CC, Gersten BL, Lenka MM, Riman RE, J. Am. Ceram. Soc., 79, 2929 (1996)

[Referenced By]

[1] Kuwabara M, J. Am. Ceram. Soc., 64, 639 (1981)

[2] Ueoka H, Yodogawa M, IEEE Transmanuf. Tech., MFT-3[2], 77 (1974)

[3] Meauger A, Mutin JC, Miepce JC, J. Mater. Sci., 42, 212 (1983)

[4] Hennings D, Rosenstein G, Schreinemacher H, J. Eur. Ceram. Soc., 8, 107 (1991)

[5] Nielsen AE, "Kinetics of Precipitation," Pergamon, Oxford (1969)

[6] Look JL, Zukoski CF, J. Am. Ceram. Soc., 78, 21 (1995)

[7] Herl W, J. Am. Ceram. Soc., 71, 879 (1988)

[8] Kondo M, Shnozaki K, Ooki R, Mizutami N, J. Ceram. Soc. Jpn., 102, 742 (1994)

[9] Mullin JW, "Crystallization," 2nd ed., p. 184, Butterworths Heinemann, Oxford (1972)

[10] Eror NG, Loehr TM, Cornilsen BC, Ferroelectrics, 28, 321 (1980)

[11] Uchino K, Sadanaga E, Hirose T, J. Am. Ceram. Soc., 72, 155 (1989)

[12] 오정강, 서경원, "PTC-BaTiO₃ 반도체 제조용 고순도 분말의 합성," 화학공학, 제출중

[13] 오정강, 서경원, 화학공학의 이론과 응용, 4, 3993 (1998)

[14] Dutty TRN, Vivekanandan R, Murugaraj P, Mater. Chem. Phys., 19, 533 (1988)

[15] Park HK, Kim DK, Kim CH, J. Am. Ceram. Soc., 80, 743 (1997)

[16] Asiaie R, Zhu W, Akbar SA, Dutta PK, Chem. Mater., 8, 226 (1996)

[17] Kondo M, Shinozaki Z, Ooki R, Mizutani N, J. Ceram. Soc. Jpn., 102, 742 (1994)

[18] Eckert JO, Hung CC, Gersten BL, Lenka MM, Riman RE, J. Am. Ceram. Soc., 79, 2929 (1996)