New Insight on Sintering Progress of KNN‐Based Lead‐Free Ceramics |
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| Authors: | Yang Zhang Bo Shen Jiwei Zhai Huarong Zeng |
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| Affiliation: | 1. Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Functional Materials Research Laboratory, School of Materials Science & Engineering, Tongji University, Shanghai, China;2. Key laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China |
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| Abstract: | 0.96(K0.5Na0.5)0.95Li0.05Nb0.93Sb0.07O3–0.04CaZrO3 (0.96KNLNS–0.04CZ) lead‐free piezoelectric ceramics have been prepared by a new ceramics sintering progress—three‐step sintering method, via adjusting every step sintering temperature and holding time to improve piezoelectric properties. The result shows that the phase structure of the ceramics was changed from single phase to two phase coexisted by three‐step sintering, meanwhile, orthorhombic–tetragonal phase transition temperature was modified to around zero degree. Remarkably, piezoelectric properties has been obtained in 0.96KNLNS‐0.04CZ ceramics, which piezoelectric parameter is d33 =420 pC/N, Kp =0.485. |
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