Effect Of Borax Addition On Sintering And Electrical Properties Of (K0.5Na0.5)Nbo3 Lead-Free Piezoceramics

Keywords

A. Sintering; C. Ferroelectric properties; C. Piezoelectric properties; D. Niobates

Abstract

Abstract Lead-free piezoelectric ceramics (K0.5Na0.5)NbO3 (KNN) doped with borax (Na2B4O7·10H2O) as sintering aid were prepared using conventional ceramic processing. All the ceramics possessed the perovskite structure with orthorhombic symmetry. Results revealed that borax is an effective additive for improving the sinterability and piezoelectric properties of KNN. The KNN with 0.45 wt% borax showed optimal properties as follows: piezoelectric constant d33=131.6 pC/N, planar electromechanical coupling coefficient kp=34.8%, mechanical quality factor Qm=109, and dielectric loss tan δ=3.80%. Crown

Publication Date

9-1-2015

Publication Title

Ceramics International

Volume

41

Issue

8

Number of Pages

10232-10236

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ceramint.2015.04.131

Socpus ID

84930928889 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84930928889

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