열에이징에 의한 PZT세라믹스의 내열특성 개선 = Improving Thermal Resisting Property of PZT Ceramics by Thermal Aging

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

1 "압전세라믹스 주파수 소자의 소개와 개발 동향" 10 (10): 172-, 1997.

2 "고주파 소자의 기판용 Pb O3+PZT 세라믹스의 압전특성에 Cr2O3의 첨가가 미치는 영향" 5 (5): 14-, 1992.

3 "壓電セラミックス振動子の試驗方法" 日本電子材料工業會標準規格 -6004, 1982.

4 "壓電セラミックス振動子の試驗方法" 日本電子材料工業會標準規格 -6004, 1982.

5 "Studies on Pb O3 ceramics with addition of Cr2O3" 6 : 1293-, 1967.

6 "Piezoelectric properties and temperature dependances of resonant frequency of WO3-MnO2-modified ceramics of Pb" 6 : 954-, 1967.

7 "PZT세라믹스에 있어서 길이진동모드의 온도안정성" 14 (14): 726-, 2001.

8 "Effect of Y and Mn doping in Pb O3 piezoelectric ceramics on the resonant frequency and capacitance changes and aging by thermal shock tests" 37 : 5285-, 1998.

9 "Dielectric Properties of Lead Zirconate Barium" 890-, 1947.

10 "Ceramic filers and resonators" su-21 (su-21): 257-, 1974.