The Lead-free Piezoelectric Ceramic Materials will be used for green and environmental protection type Medical Ultrasonic Equipments

摘要

This paper introduced the classifications of piezoelectric materials for the ultrasonic transducers, and great immediate significance of developing and applied the lead-free piezoelectric ceramic materials recently, and briefly reported the fabricating methods, structure and properties of the lead-free piezoelectric ceramic materials (Bi 0.5 Na 0.5)0.94 Ba 0.06TiO3 in present work, then, stressed the Lead-free piezoelectric ceramic materials(including the lead-free multipurpose ferrites, i.e. magnetoelectric ceramic materials)Ba6-xR2x(Nb1-xFe2+x)O3, etc, which it exhibiting the piezoelectricity and the piezomagnetic effect) will be used for green and environmental protection type medical ultrasonic equipments, etc.