ガラスカプセルHIP法によるPb(Zr,Ti)O<sub>3</sub>系セラミックスの改質と焦電特性

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  • Modification and Pyroelectricity of Pb(Zr, Ti)O<sub>3</sub>-Based Ceramics Using HIP with Novel Glass Encapsulation
  • Modification and Pyroelectricity of Pb

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The improvement of the pyroelectric properties of Pb(Zr, Ti)O3 (PZT) ceramics by means of compositional and morphological modification was realized. A compact body consisting mainly of equimolar PbZrO3 (PZ) and PZT raw powders was encapsulated within a petri dish, followed by Ar-HIP under the conditions of 900°C-98MPa-2h. The dense body obtained was probably composed of the two raw powders and their serial solid solutions, of which the temperature dependence of the pyroelectric coefficient of 9.4×10-4C·m-2·°C-1 at 25°C was almost flat over a wide temperature range of 15-70°C. Furthermore, the figure of merit (FM1) of this dense body was 199×10-14C·m·J-1 which was sufficient for practical applications.

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