Zr 0.8 Sn 0.2   ) TiO 4   세라믹스의 마이크로파 유전특성에 미치는 ( B 2 O 3   . Li 2 O  )의 영향

안일석; 윤기현; 김응수; Yil Seok Ahn; Ki Hyun Yoon; Eung Soo Kim

Korean Journal of Materials Research, Vol.9, No.10, 1041-1046, October, 1999

Export Citation

Zr 0.8 Sn 0.2 ) TiO 4 세라믹스의 마이크로파 유전특성에 미치는 ( B 2 O 3 . Li 2 O )의 영향

Effect of ( B 2 O 3 . Li 2 O ) on the Microwave Dielectric Properties of the ( Zr 0.8 Sn 0.2 ) TiO 4 Ceramics

안일석, 윤기현, 김응수 ¹

연세대학교 세라믹공학과
¹경기대학교 재료공학과

Yil Seok Ahn, Ki Hyun Yoon, and Eung Soo Kim¹

Department of Ceramic Engineering, Yonsei University, Seoul 120-749, Korea
¹Department of Materials Engineering, Kyonggi University, Suwon 442-760, Korea

초록

(Zr(sub)0.8Sn(sub)0.2) TiO 4 세라믹스와 소결조제로서 ( B 2 O 3 .Li 2 O)의 첨가에 따른 마이크로파 유전특성 및 미세구조에 미치는 영향에 대하여 연구하였다. 1.0 mol.% Sb 2 O(sub)5를 첨가하고 130 0 ? C 에서 5시간 소결한 (Zr(sub)0.8Sn(sub)0.2) TiO 4 세라믹스의 경우 ( B 2 O 3 .Li 2 O)첨가량 증가에 따라 치밀화 및 결정립 성장에 의해 유전상수와 Q.f값은 증가하여 첨가량이 0.35wt.%에서 최대값인 38과 59,000을 각각 나타내었으며, 0.50wt.% 이상 첨가한 경우에서는 제 2상의 생성으로 인하여 감소하였다. 1.0 mol% Sb 2 O(sub)5와 0.35wt.% ( B 2 O 3 . Li 2 O)를 첨가한 (Zr(sub)0.8Sn(sub)0.2)TiO 4 세라믹스를 125 0 ? C 와 135 0 ? C 에서 5시간 소결한 경우에는 각각 미반응 TiO 2 의 존재와 과대입자성장에 의한 결정립내기공의 생성으로 인하여 마이크로파 유전특성은 저하되었다.

Effect of (B2O3.Li2O) as a sintering aid on the microwave dielectric properties and the microstructure of the (Zro Sno)TiO4 ceramics were investigated. When the (Zr Sno)TiO4 ceramics doped with 1.0 mol % SbO5 were sintered at 1300oC for 5h, the dielectric constant and the Q.f values were enhanced with an increase of the amount of (B2O3.LiO) up to 0.35 wt & due to the densification and the grain growth, and reached the maximum values of 38 and 59,000 respectively. However, those properties were decreased above 0.50 wt.& due to the formation of the secondary phase. When the(Zro Sno)TiO4 ceramics with 1.0 mol% Sb5 and 0.35 wt % (B2O3 . LiO)were sintered at 1250 oC and 1350oC for 5 h, the microwave dielectric properties were deteriotated by the presence of the unreacted TiO2 phase and by the formation of the intragranular pores resulting from the abnormal grain growh, respectively.

[References]

Wolfram G, Gobel HE, Mater. Res. Bull., 30(7), 813 (1995)
Newnham RE, J. Am. Ceram. Soc., 50(4), 216 (1967)
Coughnour LW, Roth RS, DeProsse VA, J. Res. Natl. Bur. Standard, 52(1), 37 (1954)
Iddles DM, Bell AJ, Moulson AJ, J. Mater. Sci., 27, 6303 (1992)
Michiura N, Tatekawa T, Higuchi Y, Tamura H, J. Am. Ceram. Soc., 78(3), 793 (1995)
Fang Y, Xu Z, Hu A, Payne DA, Ferroelectrics, 135, 139 (1992)
Wakino K, Minai K, Tamura H, J. Am. Cream. Soc., 67(4), 278 (1984)
Kawashima S, Nishida M, Ueda I, Ouchi H, J. Am. Cream. Soc., 66(6), 421 (1983)
Heiao YC, Wu L, Wei CC, Mat. Res. Bull., 23, 1687 (1988)
Yoon KH, Kim ES, Mater. Res. Bull., 30(7), 813 (1995)
Yoon KH, Kim YS, Kim ES, J. Mater. Res., 10(8), 2085 (1995)
Kudesia R, McHale A, Snyder RL, J. Am. Ceram. Soc., 77(12), 3215 (1994)
Takada T, Wang SF, Yoshikawa S, Jang SJ, Newnham RE, J. Am. Ceram. Soc., 77(9), 2485 (1994)
Sastry BSR, Hummel FA, J. Am. Cream. Soc., 41(1), 7 (1958)
Hakki BW, Coleman PD, IRE Trans. Microwave Theory Tech., 8, 402 (1960)
Kobayashi Y, Tanake S, Tech. Rept. CPM, 72 (1972)
Kim WS, Kim YH, Kim ES, Yoon KH, Jpn. J. Appl. Phys., 37(9B), 5367 (1998)
Physical Constants of Inorganic Compound, CRC Handbook of Chemistry and Physics/ CRC Press, pp.B73-B140, 1987 (1987)
Osbond PC, Whatmore RW, Ainger FW, Proc. Br. Ceram. Soc., 36, 167 (1985)
Han KR, Jang JW, Cho SY, Jeong DY, Hong KS, J. Am. Ceram. Soc., 81(5), 1209 (1998)

[Related Articles]

[1] Wolfram G, Gobel HE, Mater. Res. Bull., 30(7), 813 (1995)

[2] Newnham RE, J. Am. Ceram. Soc., 50(4), 216 (1967)

[3] Coughnour LW, Roth RS, DeProsse VA, J. Res. Natl. Bur. Standard, 52(1), 37 (1954)

[4] Iddles DM, Bell AJ, Moulson AJ, J. Mater. Sci., 27, 6303 (1992)

[5] Michiura N, Tatekawa T, Higuchi Y, Tamura H, J. Am. Ceram. Soc., 78(3), 793 (1995)

[6] Fang Y, Xu Z, Hu A, Payne DA, Ferroelectrics, 135, 139 (1992)

[7] Wakino K, Minai K, Tamura H, J. Am. Cream. Soc., 67(4), 278 (1984)

[8] Kawashima S, Nishida M, Ueda I, Ouchi H, J. Am. Cream. Soc., 66(6), 421 (1983)

[9] Heiao YC, Wu L, Wei CC, Mat. Res. Bull., 23, 1687 (1988)

[10] Yoon KH, Kim ES, Mater. Res. Bull., 30(7), 813 (1995)

[11] Yoon KH, Kim YS, Kim ES, J. Mater. Res., 10(8), 2085 (1995)

[12] Kudesia R, McHale A, Snyder RL, J. Am. Ceram. Soc., 77(12), 3215 (1994)

[13] Takada T, Wang SF, Yoshikawa S, Jang SJ, Newnham RE, J. Am. Ceram. Soc., 77(9), 2485 (1994)

[14] Sastry BSR, Hummel FA, J. Am. Cream. Soc., 41(1), 7 (1958)

[15] Hakki BW, Coleman PD, IRE Trans. Microwave Theory Tech., 8, 402 (1960)

[16] Kobayashi Y, Tanake S, Tech. Rept. CPM, 72 (1972)

[17] Kim WS, Kim YH, Kim ES, Yoon KH, Jpn. J. Appl. Phys., 37(9B), 5367 (1998)

[18] Physical Constants of Inorganic Compound, CRC Handbook of Chemistry and Physics/ CRC Press, pp.B73-B140, 1987 (1987)

[19] Osbond PC, Whatmore RW, Ainger FW, Proc. Br. Ceram. Soc., 36, 167 (1985)

[20] Han KR, Jang JW, Cho SY, Jeong DY, Hong KS, J. Am. Ceram. Soc., 81(5), 1209 (1998)