금속 알콕사이드로부터 PSZ-seeding Mullite 복합체의 합성 및 소결체의 특성

임굉; 임재석; 김영호; Going Yim; Chai-Suk Yim; Young-Ho Kim

Korean Journal of Materials Research, Vol.17, No.1, 18-24, January, 2007

DOI10.3740/MRSK.2007.17.1.018 Export Citation

금속 알콕사이드로부터 PSZ-seeding Mullite 복합체의 합성 및 소결체의 특성

Synthesis of PSZ-seeding Mullite Composite from Metal Alkoxides and Its Characteristics of Sintered Body

임굉^†, 임재석¹, 김영호²

배재대학교 나노고분자재료공학과
¹㈜효성 기술원 중앙연구소
²㈜두원 C&C 기술연구센터

Going Yim^†, Chai-Suk Yim¹, and Young-Ho Kim²

Dept. of Nanopolym. Mat. Eng., Col. of Eng.,, Paichai University, Daejon 302-735, Korea
¹Hyosung Corp. R&D.B. Labs, Cent. Res. Inst., Gyunggi-do 431-080, Korea
²Doowon C&C Co., Tech., R&D Center, Gyunggi-do 445-910, Korea

E-mail:

Mullite-PSZ composite was prepared by sol-gel method using . The sinterability ana mechanical properties of powder compacts sintered at for 4 hrs were investigated for various PSZ contents. In result Al-Si spinel formed at from amorphous dried gel, and zirconia as well as mullite crystal formed above . The sintered body was densified to except the specimen containing 25vol% PSZ which showed the relative density of about 95% obtained by sintering at for 4 h. The flexural strength of the sintered body was a maximum value of 290 MPa in 20 vol% PSZ, which was also considerably larger than the value of 200 MPa without PSZ. The value of the fracture toughness increased linearly with increase of PSZ content and showed a maximum value of in 25 vol% PSZ, Namely this value was remarkably larger than the of pure mullite without PSZ.

Keywords:PSZ-seeding mullite composite;Metal Alkoxides;Sol-gel method;Flexural strength;Fracture toughness

[References]

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[2] Aksay IA, Pask JA, J. Am. Ceram. Soc., 58, 507 (1975)

[3] Dokko PC, Pask JA, Mazdiyasni KS, J. Am. Ceram. Soc., 60, 150 (1977)

[4] Kanzaki S, Tabata H, Kumazawa T, Ohta S, J. Am. Ceram. Soc., 68, C6 (1985)

[5] Lessing PA, Gorden RS, Mazdiyasni KS, J. Am. Ceram. Soc., 58, 149 (1975)

[6] Prochazka S, Wallace JS, Claussen N, J. Am. Ceram. Soc., 66, C125 (1983)

[7] Moya JS, Miranzo P, in High Tech. Ceram., ed. by P. Vincenzini (Elsevier Science Publishers B. V., Amsterdam, 1987), p. 1317 (1987)

[8] Yuan QM, Tan JQ, Jin ZG, J. Am. Ceram. Soc., 69, 265 (1986)

[9] Moya JS, Osendi MI, J. Mater. Sci., 19, 2909 (1984)

[10] Green DJ, Hannink RHJ, Swain MV, Transformation Toughening of Ceramics, pp. 57-93, CRC Press Inc., Boca Raton, Florida (1989) (1989)

[11] Garvie RC in Advances in Ceramics, Vol. 3, ed. by Heur AH, Hobbs LF, Am. Ceram. Soc., Columbus, OH, 1981), p. 465 (1981)

[12] Heur AH, Ruhle M, in Advances in Ceramics, Vol. 12, ed. by N. Claussen et al., Am. Ceram. Soc., Columbus, OH, (1984), p.1 (1984)

[13] Di Rupo EI, Anseau MR, J. Mater. Sci., 15, 114 (1980)

[14] Claussen N, Jahn J, J. Am. Ceram. Soc., 63, 228 (1980)

[15] De Portu G, Henny JW, Brit. Ceram. Trans. J., 83, 69 (1984)

[16] Moya JS, Osendi MI, J. Mater. Sci. Lett., 2, 599 (1983)

[17] Rincon JM, Dinger TR, Thomas G, Moya JS, Osendi MI, Acta. Metal., 35, 1155 (1987)

[18] Shiga H, Ismail MGMU, Katayama K, J. Ceram. Soc., 99, 782 (1991)

[19] Ismail MGMU, Nakai Z, Somiya S, in Advances in Ceramics, Vol. 24, ed. by S. Somiya, N. Yamamoto and H. Yanagida (Am. Ceram. Soc., Westerville, OH, 1988), p. 553 (1988)

[20] Rundgren K, Elfving P, Pompe R, Lagerlof KPD, Larsson B, in Advances in Ceramics, Vol. 24, ed by S. Somiya, N. Yamamoto and H. Yanagida, (Am. Ceram. Soc., Westerville, OH, 1988), p. 1043 (1988)

[21] Lathabai S, Hay DG, Wagner F, Claussen N, J. Am. Ceram. Soc., 79, 248 (1996)

[22] Imose M, Ohta A, Takano Y, Yoshinaka M, Hirota K, Yamaguchi O, J. Am. Ceram. Soc., 81, 1050 (1998)

[23] Claussen N, Master. Sci. Eng., 71, 23 (1985)

[24] Aksay IA, Dabbs DM, Sarikaya M, J. Am. Ceram. Soc., 74, 2343 (1991)

[25] Evans AG, Charles EA, J. Am. Ceram. Soc., 59, 371 (1976)

[26] Ismail MGMU, Nakai Z, Somiya S, in Advances in Ceramics, Vol. 24, ed by S. Somiya, N. Yamamoto and H. Yanagida (Am. Ceram. Soc., Westerville, OH, 1988), p. 119 (1988)

[27] Kebbel B, Heuer AH, J. Am. Ceram. Soc., 69, 213 (1986)

[28] Garvie RC, Nicholson PS, J. Am. Ceram. Soc., 55, 303 (1972)

[29] Heuer AH, Claussen N, Kriven WN, Ruhle R, J. Am. Ceram. Soc., 65, 642 (1982)

[30] Garvie RC, J. Phys. Chem., 69, 1238 (1965)

[31] Lange FF, J. Mater. Sci., 17, 225 (1982)

[32] Kim IS, Park JS, Lee MW, Lee BH, So YY, J. Kor. Ceram. Soc., 35, 878 (1998)

[33] Wang J, J. Mater. Sci., 23, 804 (1988)

[34] Yuan WM, Tan JQ, Jin ZG, J. Am. Ceram. Soc., 69, 265 (1986)