EDP Sciences Journals List
Issue J. Phys. IV France
Volume 04, Number C2, Février 1994
European Workshop on Piezoelectric Materials : Crystal Growth, Properties and Prospects
Page(s) C2-85 - C2-91
DOI http://dx.doi.org/10.1051/jp4:1994211

European Workshop on Piezoelectric Materials : Crystal Growth, Properties and Prospects

J. Phys. IV France 04 (1994) C2-85-C2-91

DOI: 10.1051/jp4:1994211

Controlled dissolution of quartz material.
Part II. Quartz chemical etching applied to blanks industrial manufacturing

O. CAMBON1, M. DELEUZE1, J.P. MICHEL1, J.P. AUBRY1, A. GOIFFON2 and E. PHILIPPOT2

1  CEPE, 44 Avenue de la Glacière, BP. 165, 95100 Argenteuil cedex, France
2  UMII - LPMS, Place Eugène Bataillon, 34095 Montpellier cedex 5, France


Abstract
In many electronic applications, chemical etching process is used to manufacture the substrates. This method has been applied for long on quartz crystal blanks manufacturing for minor adjustments of the vibration frequencies. This paper presents a way to implement an industrial chemical etching process specially dedicated for large thickness removals without damaging the blanks surface texture. It will be shown how were defined the choice of the etching solvent, and the most sensitive parameters. An industrial equipment will be presented whose principle was deduced from the sensitivity study of these parameters. Finally, the electrical performances of the resonators processed on this equipment will be compared with the performances achieved by conventional means.



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