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- W3001603502 abstract "Lead-free Na0.5K0.5NbO3 (KNN) piezoelectric ceramics is regarded as a potential candidate for PZT material, while high performance is difficult to be obtained due to its poor sinterability and non-stoichiometric component. In this work, oscillatory pressure-assisted hot pressing (OPAHP) is utilized to fabricate KNN ceramics with high density. The KNN ceramics sintered at 860 °C exhibits superior performance with piezoelectric parameter (d33) of 142 pC/N, electromechanical coupling factors (kp) of 0.41, and relative permittivity (εT33/ε0) of 472–620. Additionally, hardness and flexural strength are measured as 3.55 GPa and 99.13 MPa, respectively. This work indicates that OPAHP technique is effective for fabricating KNN piezoelectric ceramics with high performance." @default.
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- W3001603502 date "2020-06-01" @default.
- W3001603502 modified "2023-10-02" @default.
- W3001603502 title "High performance lead-free Na0.5K0.5NbO3 piezoelectric ceramics obtained via oscillatory hot-pressing" @default.
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- W3001603502 doi "https://doi.org/10.1016/j.ceramint.2020.01.191" @default.
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