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Improving Thermal Resisting Property of PZT Ceramics by Thermal Aging

열에이징에 의한 PZT세라믹스의 내열특성 개선

  • 이개명 (제주대학교 전기전자공학부) ;
  • 김병효 (서귀포산업과학고등학교 전자계산기과)
  • Published : 2005.01.01

Abstract

Temperature stabilities of resonance frequencies of the substrates are very important in piezoelectric ceramics oscillators and fitters. In this study, it was investigated thermal resisting property of the length-extensional vibration mode of PZT ceramics. The mode can be utilized in fabricating ultra-small 55 kHz IF devices. We fabricated the ceramic specimens with x = 0.51, 0.52, 0.53, 0.54, and 0.55 in the Pb(Zr$\sub$x/Ti$\sub$1-x/)O$_3$ system. And their resonance frequencies were measured before 1st thermal aging, after 1st and 2nd thermal aging. In order to investigate the influence of thermal aging on thermal resisting properties, thermally aged specimens were once mote thermally aged. Before 1st thermal aging, the specimens of the compositions with morphotropic phase, x = 0.53 and rhombohedral phase, x = 0.54 have weak thermal resisting property of resonance frequency, while tetragonal phase, x = 0.51 has robust thermal resisting property of resonance frequency. 1st thermal aging improved thermal resisting property of resonance frequency in all specimens.

Keywords

References

  1. S. Roberts, 'Dielectric Properties of Lead Zirconate Barium', Phys. Rev, 71, p. 890, 1947
  2. H. H. Schuessler, 'Ceramic filers and resonators', IEEE Trans. on Sanies and Ultrasonics, Vol. su-21, No. 4, p. 257, 1974
  3. 이개명, '압전세라믹스 주파수 소자의 소개와 개발 동향', 전기전자재료학회지,10권, 2호, p. 172, 1997
  4. K. Takahashi, M. Nishida, and H. Hase, 'Effect of Y and Mn doping in $Pb(Ti,Zr)O_3$ piezoelectric ceramics on the resonant frequency and capacitance changes and aging by thermal shock tests', Jpn. J. Appl. Phys., Vol. 37, part 1, No. 9B, p. 5285, 1998
  5. F. kulsar, United States Patent, 3,006,857, 1961
  6. N. Uchida and T. Ikeda, 'Studies on $Pb(Zr-Ti)O_3$ ceramics with addition of $Cr_2O_3$', Jpn. J Appl. Phys., Vol. 6, No. 11, p, 1293, 1967
  7. H. Banno and T. Tsunooka, 'Piezoelectric properties and temperature dependances of resonant frequency of $WO_3-MnO_2$-modified ceramics of $Pb(Zr-Ti)O_3$', Jpn. J. Appl. Phys., Vol. 6, No. 8, p. 954, 1967
  8. 이개명, 백동수, 윤석진, 홍재일, 박창엽, '고주파 소자의 기판용 $Pb(Mn_{1/3}Nb_{2/3})O_3$+PZT 세라믹스의 압전특성에 $Cr_2O_3$의 첨가가 미치는 영향', 전기전자재료학회지, 5권, 1호, p. 14, 1992
  9. 이개명, 현덕수, 'PZT세라믹스에 있어서 길이 진동모드의 온도안정성', 전기전자재료학회논문지 , 14권, 9호, p. 726, 2001
  10. 日本電子材料工業會標準規格, '壓電セラミッ クス振動子の試験方法', EMAS-6004, 1982