Silica가 첨가된 지르콘 소결거동

이근봉; 강종봉; Keun Bong Lee; Jong Bong Kang

Korean Journal of Materials Research, Vol.18, No.11, 604-609, November, 2008

DOI10.3740/MRSK.2008.18.11.604 Export Citation

Silica가 첨가된 지르콘 소결거동

Sintering Behavior of Zircon with SiO2

이근봉, 강종봉 ^†

경남대학교 대학원 재료공학과

Keun Bong Lee, and Jong Bong Kang^†

Department of Materials Science and Engineering, kyungnam University, Masan 631-701, Korea

E-mail:

The sintering behavior of zircon with silica was investigated. Zircon with 5 vol% of sedimentation SiO2 resulted in the apparent density of 4.45 g/cm3, the diametral tensile strength of 12.125 kgf/cm2, and the micro Vickers hardness of 1283 HV. The dissociation temperature and mechanical characteristics of the ZrSiO4 were changed with different kinds of SiO2. SiO2 addition prevented dissociation of ZrSiO4. Zircon with 5 vol% of sedimentation SiO2 and with 5 vol% of fused SiO2 resulted in increased diametral tensile strength and increased micro Vickers hardness by suppression of ZrSiO4 dissociation and low temperature liquid SiO2 formation. Zircon with fumed SiO2 and quartz SiO2 resulted in decreased diametral tensile strength and decreased micro Vickers hardness because of cristobalite and quartz phase formation and high temperature liquid SiO2 formation. Zircon with 10 vol% of SiO2 resulted in decreased diametral tensile strength and decreased micro Vickers hardness because of weak particle coupling due to excess formation of liquid SiO2.

Keywords:ZrSiO4;Zircon;Silica;SiO2

[References]

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Lee KB, Jung SH, Lee JS, Hong GP, Jo BR, Moon JS, Kang JB, Korean J. Mater. Res., 18(7), 352 (2008)
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[Related Articles]

[1] Aksel C, Materials Letters, 57(4), 992 (2002)

[2] Singh RN, J. Am. Ceram. Soc., 70, 117 (1994)

[3] Singh RN, J. Am. Ceram. Soc., 73, 2399 (1990)

[4] Mori T, Yamamura H, Kobatashil H, J. Am. Ceram. Soc., 75, 2420 (1992)

[5] Garrido LB, Aglietti EF, Europ. Ceram. Soc., 21(12), 2259 (2001)

[6] Shi Y, Huang X, Yan D, Europ. Ceram. Soc., 24(5), 393 (1998)

[7] Lee JK, Kim JY, Baeg YL, Lee JS, Sin DW, Ceramics Raw Materials, 13, 234 (2000)

[8] Lee KB, Jung SH, Lee JS, Hong GP, Jo BR, Moon JS, Kang JB, Korean J. Mater. Res., 18(7), 352 (2008)

[9] Bermuddez O, J. Mater. Sci., 4, 389 (1993)