Cytotoxicity and degradation behaviour of potassium sodium niobate piezoelectric ceramics
Resource
Ceramics International, 38(4), 2845-2850
Journal
Ceramics International
Journal Volume
38
Journal Issue
4
Pages
2845-2850
Date Issued
2012
Date
2012
Author(s)
Abstract
In the present study, two lead-free piezoelectric ceramics, potassium sodium niobate (K 0.5Na 0.5NbO 3, KNN) and lithium-doped potassium sodium niobate (Li 0.06K 0.47Na 0.47NbO 3, LKNN), were prepared by a solid-state reaction process. The cytotoxicity evaluation indicated that the cytotoxicity of KNN is low. However, a strength decrease was noted after soaking in saline solution for 7 days. The addition of 6 mol% Li into the KNN improves its density; the strength and piezoelectric coefficient are enhanced consequently. Nevertheless, the cytotoxicity of LKNN is slightly higher than that of KNN. The higher cytotoxicity is related to the release of Li ions. The release of Li ion also induces the degradation of piezoelectric performance. © 2011 Elsevier Ltd and Techna Group S.r.l.
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Type
journal article
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