Lead iron tungstate capacitive transducer, relaxor material...

Details Lead iron tungstate capacitive transducer, relaxor material... Lead iron tungstate capacitive transducer, relaxor material...

G - Physics

01

L

G01L 9/12 (2006.01) C04B 35/497 (2006.01) G01L 9/00 (2006.01)

Patent

CA 2480285

The present invention discloses a relaxor material lead iron tungstate which has been synthesized in doped and undoped conditions by single and two step heat treatment. The relaxor material is seen to exhibit almost negligible hysteresis and a transducer made thereby shows pressure measurement capability over a wide range from 0.5MPa to 415MPa with accuracy of .plusmn. 0.05%.

La présente invention concerne un matériau Relaxor de tungstate de fer et de plomb qui a été synthétisé dans des conditions dopées et non dopées par un traitement thermique en une seule et deux étapes. Le matériau Relaxor présente une hystérésis pratiquement négligible et un transducteur composé de ce dernier présente une capacité de mesure de pression sur une large plage de 0,5 % Mpa à 415 Mpa avec une précision de +/- 0,05 %.

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