Author/Authors :
MENŞUR ALKOY, Ebru Maltepe Üniversitesi - Mühendislik ve Doğa Bilimleri Fakültesi, Turkey
Title Of Article :
Structure-Property Relationships in Potassium Sodium Niobate (KNN) Based Lead-Free Piezoelectric Ceramics
Abstract :
In this study, lead-free potassium sodium niobate (KNN) piezoelectric ceramics were fabricated in bulk and fiber forms. Microstructural and electrical properties were explained based on structure-property relationship. KNN fibers were fabricated by a novel alginate gelation method. 1-3 piezocomposites were fabricated by embedding the fibers into a polymer matrix. Dielectric constants of pure, CuO added and Li-doped KNN samples were calculated as 316, 335 ve 560 at 100 kHz, respectively. This value is 191 for CuO-KNN/epoxy composite containing 70 vol% ceramic fibers. The maximum strain value of pure KNN at 50 kV/cm is 0.04 % and 0.10 % for the other samples.
NaturalLanguageKeyword :
Lead , free ceramics , KNN , Fibers , Piezoelectrics , Dielectrics
JournalTitle :
Afyon Kocatepe University Journal Of Science and Engineering
