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LI Yueming, HONG Lu, SHEN Zongyang, WANG Zhumei, HONG Yan. Effect of Mn Doping Amount on Properties of 0.96K0.5Na0.5NbO3-0.04Bi0.5Na0.5ZrO3 Lead-Free Piezoelectric Ceramics[J]. Materials and Mechanical Engineering, 2018, 42(4): 17-21. DOI: 10.11973/jxgccl201804004
Citation: LI Yueming, HONG Lu, SHEN Zongyang, WANG Zhumei, HONG Yan. Effect of Mn Doping Amount on Properties of 0.96K0.5Na0.5NbO3-0.04Bi0.5Na0.5ZrO3 Lead-Free Piezoelectric Ceramics[J]. Materials and Mechanical Engineering, 2018, 42(4): 17-21. DOI: 10.11973/jxgccl201804004
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Effect of Mn Doping Amount on Properties of 0.96K0.5Na0.5NbO3-0.04Bi0.5Na0.5ZrO3 Lead-Free Piezoelectric Ceramics

  • School of Materials Science and Engineering, China National Light Industry Key Laboratory of Functional Ceramic Materials, Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, Jingdezhen Ceramic Institute, Jingdezhen 333403, China

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  • Received Date: July 26, 2017
  • Revised Date: February 25, 2018
    Graphical Abstract
    • Abstract
  • The 0.96K0.5Na0.5NbO3-0.04Bi0.5Na0.5 ZrO3+xMnCO3 (0.96KNN-0.04BNZ+xMn, x=0, 0.1%, 0.3%, 0.5%, 0.7%, mass fraction) lead-free piezoelectric ceramics were prepared by conventional solid state reaction method. The effects of Mn doping amount on the crystal structure, microstructure, piezoelectric and dielectric properties of the lead-free piezoelectric ceramics were investigated. The results show that the 0.96KNN-0.04BNZ+xMn ceramics had a pure perovskite structure. With increasing x, the phase of the ceramics changed from the coexistence of orthorhombic and tetragonal phases to orthorhombic phase; the bulk density, piezoelectric constant, planar electromechanical coupling factor and dielectric constant first increased and then decreased; the mechanical quality factor increased; the dielectric loss angle tangent, remanent polarization, coercive field and Curie temperature decreased. The comprehensive performance of the ceramics was the best when x was equal to 0.3wt%.
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    • References (18)
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