Anzeige
Erschienen in:
05.05.2018
Annealing effects on the structure and properties of Mn-doped (K0.48Na0.52)NbO3 lead-free piezoceramics
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 13/2018
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
The Mn-doped (K0.48Na0.52)NbO3 (KNN) ceramics were annealed in air at 600–800 °C for 16 h and the effects of annealing on the structure as well as the ferroelectric and piezoelectric properties were investigated. The 3 mol% Mn-doped ceramics sintered at 1030–1080 °C were found to be melted after being annealed at 800 °C, and the melting temperature decreased with the increase of Mn content. The TC and TO–T of the ceramics with x ≤ 0.04 shifted significantly to higher temperature after annealing. The annealed ceramics doped with 1–4 mol% Mn possessed a large internal bias field (Ei) of 5.08–6.6 kV/cm, and larger d33 and Qm. The d33 of the 1 mol% Mn-doped ceramics increased from 109 to 124 pC/N after annealed at 600 °C, and the largest Qm, 145, was obtained when the 2 mol% Mn-doped ceramics were annealed at 700 °C.