高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (2): 176.

• 研究论文 • 上一篇    下一篇

压电石英晶体在电解质水溶液中的振荡性能研究(Ⅱ)—频率、频移特性

周铁安, 张文柳, 聂利华, 姚守拙   

  1. 湖南大学化学化工系
  • 收稿日期:1988-05-09 出版日期:1990-02-24 发布日期:1990-02-24
  • 通讯作者: 周铁安
  • 基金资助:

    中国科学院青年鼓励基金;国家自然科学基金

On the Oscillating Behaviors of Piezoelectric Quartz Crystal in Aqueous Electrolyte Solutions—Frequency and Frequency Shift

Zhou Tiean, Zhang Wenjlu, Nie Lihua, Yao Shouzhou   

  1. Department of Chemistry, Hunan University, Changsha
  • Received:1988-05-09 Online:1990-02-24 Published:1990-02-24

PDF (PC)

摘要： 根据两面电极浸入液体中的压电晶体等效电路模型和Pierce振荡器振荡方程的解,得到晶体在电解质溶液中的振荡频率(F1)与溶液电导率(x)的关系式:F1=(1/2π)(1/C1+1/C2)(1/Xe)[(Re2+Xe2)x2+2Rex+1]。以自行设计的Pierce晶体振荡器。研究了晶体和主振电路参数、输入电压及检测池外壳屏蔽接地对AT切9MHz石英晶体在KCl、Na2SO4水溶液中的频率、相对于纯水频移随溶液电导率变化的影响规律,结果与上式相符。

关键词: 压电晶体, 等效电路, 电解质溶液, 振荡频率

Abstract: Based on the equivalent circuit model of a piezoelectric crystal with both sides of electrodes immersed in liquid and the solution of the oscillating equation of Pierce oscillator, the relationship formula between the crystal oscillation frequency in electrolyte solution (F1) and the specific conductance of the solution (K) is derived as follows, Fl=(1/2π)(1/C1+1/C2)(1/Xe)[θ2(Re2+Xe2)K2+2θRex+1]. The validity of the Fl-x relationship is demonstrated in KCl and Na2SO4 aqueous solutions.

Key words: Piezoelectric crystal, Equivalent circuit, Electrolyte solution, Oscillation frequency

TrendMD: