Controlled dissolution of a piezoelectric material berlinite (AlPO4)
Abstract
The results on the controlled dissolution of berlinite aimed at realizing AT high frequency (75 Hz) resonators are presented. The dissolution takes place in acid solutions (H3PO4 or H2SO4) of aluminum phosphate. The dissolution kinetics and evolution of the surface state are controlled during the chemical machining process by frequency variation of resonance and roughometry. After systematic study, the controlled dissolution bath giving the best results is used to prepare AT berlinite resonators. Theses are characterized by their piezoelectric performances and compared to resonators obtained by ion bombardment or to similarly oriented quartz resonators.
- Publication:
-
ESA Special Publication
- Pub Date:
- June 1992
- Bibcode:
- 1992ESASP.340..377C
- Keywords:
-
- Aluminum Compounds;
- Chemical Machining;
- Dissolving;
- Etching;
- Phosphates;
- Piezoelectric Crystals;
- Resonators;
- Characterization;
- High Frequencies;
- Performance Tests;
- Reaction Kinetics;
- Surface Finishing;
- Surface Properties;
- Solid-State Physics