EFFECTS OF SINTERING TEMPERATURE ON THE STRUCTURE, MICROSTRUCTURE AND PROPERTIES OF 0.935(Bi0.5Na0.5) TiO3 - 0.065BaTiO3 PIEZOELECTRIC CERAMICS

المؤلفون

  • H LIDJICI Université Constantine 1
  • F HOBAR Université Constantine 1
  • M RGUITI Université de Valenciennes et du Hainaut-Cambrésis
  • J.F TRELCAT Université de Valenciennes et du Hainaut-Cambrésis
  • C COURTOIS Université de Valenciennes et du Hainaut-Cambrésis
  • A LERICHE Université de Valenciennes et du Hainaut-Cambrésis

الكلمات المفتاحية:

free ceramics، sintering temperature، piezoelectric properties

الملخص

The influence of sintering temperature of 0.935(Bi0.5Na0.5) TiO3-0.065BaTiO3 lead-free ceramics was studied from 1150°C to 1200°C. The X-ray diffraction patternsshowed that all of the BNT6.5BT ceramics exhibited a single perovskite structure with the coexistence of the rhombohedral and tetragonalphase. A fine and homogeneousgrains were observed for samples sintered at 1150 and 1160°C and the increase of the sintering temperature up to 1180-1200°C induces significant grain growth with the appearance of coarse grains. The values ofremnant polarization Probtained at room temperature are 27, 31, 27 and 29 µC/cm 2 for specimens sintered at 1150, 1160, 1180 and 1200°C respectively. At room temperature, the sample sintered at 1180°C exhibited good performances: dielectric constant was 833 at 1 KHz, thick coupling factor ktwas 0.52 and the kt/kp
ratio was 2.08. Therefore, the ceramics can be suitable for
ultrasonic transducers in commercial applications.

السير الشخصية للمؤلفين

H LIDJICI، Université Constantine 1

Laboratoire des Microsystèmes et Instrumentation

F HOBAR، Université Constantine 1

Laboratoire des Microsystèmes et Instrumentation

M RGUITI، Université de Valenciennes et du Hainaut-Cambrésis

Laboratoire des Matériaux et Procédés

J.F TRELCAT، Université de Valenciennes et du Hainaut-Cambrésis

Laboratoire des Matériaux et Procédés

C COURTOIS، Université de Valenciennes et du Hainaut-Cambrésis

Laboratoire des Matériaux et Procédés

A LERICHE، Université de Valenciennes et du Hainaut-Cambrésis

Laboratoire des Matériaux et Procédés

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منشور

2010-12-01

كيفية الاقتباس

LIDJICI, H., HOBAR, F., RGUITI, M., TRELCAT, J., COURTOIS, C., & LERICHE, A. (2010). EFFECTS OF SINTERING TEMPERATURE ON THE STRUCTURE, MICROSTRUCTURE AND PROPERTIES OF 0.935(Bi0.5Na0.5) TiO3 - 0.065BaTiO3 PIEZOELECTRIC CERAMICS. مجلة علوم و تكنولوجيا ب، علوم الهندسة, (32), 25–28. استرجع في من https://revue.umc.edu.dz/b/article/view/100

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