PROCEDE DE FABRICATION D'UN MATERIAU COMPOSITE PIEZO-ELECTRIQUE

This process consists in making the composite material from a mixture of powder of piezoelectric ceramic of a particle size less than 400 m and of a hardenable liquid dielectric binder placed, during hardening of the binder, in a mould provided with orifices 44 for liquid overflow and installed betw...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	JEAN-PIERRE BESOMBES ET ROGER THANNBERGER
Format:	Patent
Sprache:	fre
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTRICITY LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS REFRACTORIES SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG TRANSPORTING TREATMENT OF NATURAL STONE WORKING CEMENT, CLAY, OR STONE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	This process consists in making the composite material from a mixture of powder of piezoelectric ceramic of a particle size less than 400 m and of a hardenable liquid dielectric binder placed, during hardening of the binder, in a mould provided with orifices 44 for liquid overflow and installed between the plates 45, 46 of a press exerting on it a pressure greater than 40 bars. The figure gives an example of mould for making a piezoelectric composite disc according to the method. This mould, placed between the plates 45, 46 of a press, comprises an annular lateral wall 41, a matching bottom 42 and a lid 43 fitted with orifices 44 for liquid overflow. By virtue of the method, a piezoelectric composite material is obtained which is particularly advantageous for making a piezoelectric sensor sensitive to hydrostatic pressures.