In:
Journal of the American Ceramic Society, Wiley, Vol. 98, No. 2 ( 2015-02), p. 448-454
Abstract:
The growing environmental concerns have been pushing the development of viable green alternatives for lead‐based piezoceramics to be one of the priorities in functional ceramic materials. A polymorphic phase transition has been utilized to enhance piezoelectric properties of lead‐free ( K , Na ) NbO 3 ‐based materials, accepting the drawbacks of high temperature and cycling instabilities. Here, we present that CaZrO 3 ‐modified ( K , Na ) NbO 3 piezoceramics not only possess excellent performance at ambient conditions benefiting from nanodomain engineering, but also exhibit superior stability against temperature fluctuation and electrical fatigue cycling. It was found that the piezoelectric coefficient d 33 is temperature independent under 4 kV/mm, which can be attributed to enhanced thermal stability of electric field engineered domain configuration; whereas the electric field induced strain exhibits excellent fatigue resistance up to 10 7 sesquipolar cycles. These findings render the current material an unprecedented opportunity for actuator applications demanding improved thermal and cycling reliabilities.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2015.98.issue-2
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
Bookmarklink