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Abstract

A new kind of large-displacement piezoelectric actuator — reduced and internally biased oxide wafer (RAINBOW) actuator composed of reduced and unreduced layers, is prepared from PZT (Pb(Zr_xTi_1-x)O₃) by chemical reduction. Its phase components, microstructure, and actuating properties are also researched. It is found that the displacement of reduced RAINBOW PZT is three times larger than that of the traditional PZT; however, re-oxide phases are found in the reduced layer of composite PZT, showing that the reduction procedure needs to be improved. Furthermore, the possibility of the integration between PZT and shape memory alloy (SMA) is explored. Physical vapor deposition (PVD) method is applied to depose SMA films on the reduced layer of RAINBOW PZT patches. Results of mechanical and actuating experiments show that this kind of integration is a reasonable idea to manufacture actuators with better performance.

Keywords

RAINBOW actuator PZT SMA PVD.

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References

Haertling, G.H. 1994. ``RAINBOWs — A New Type of Ultra-High Displacement Actuators, '' American Ceramic Society Bulletin, 73(1):96—99.

Haertling, G.H. 1999. ``Ferrocelectric Ceramics: History and Technology,'' Journal of the American Ceramic Society, 82(4):797—818.

Haris, A. , Goo, N.S. and Park, H.C. 2004. ``Modeling and Analysis for the Development of Lightweight Piezoceramic Composite Actuators (LIPCA),'' Computational Materials Science, 30(3-4): 474—481.

Kugel, V.D. and Vhandran, S. 1997. ``Comparative Analysis of Piezoelectric Bending-Mode Actuators ,'' Smart Microstructures and Materials Conference , San Diego, USA, pp. 303—304.

Onitsuka, K. 1993. ``Effects of Bonding and Geometry on the Flextensional Tranducer Moonie,'' Ph.D Thesis, The Pennsylvania State University, University Park, PA.

Shen, X. 2003. ``Preparation and Structure of Rainbow Piezoelectric Ceramics ,'' Journal of Wuhan University of Technology (Material Science Edition), 18(4):24—26.

Shen, X. and Yuan, S. 2004. ``Characterization and Microstructure of PLZT RAINBOW Ceramics, Chinese Journal of Aeronautics, 17(2):124—128.

Shen, X. , Wang, X. and Lee, I. 2006. ``Experimental Study of RAINBOW Actuators Made of PSZT , Journal of Intelligent Material Systems and Structures, 17(8—9):691—694.

Wickramasinghe, V.K. and Hagood, N.W. 2004. ``Durability Characterization of Active Fiber Composite Actuators for Helicopter Rotor Blade Applications,'' Journal of Aircraft, 41(4):931—937.

10.

Wise, S.A. 1998. ``Displacement Properties of RAINBOW and THUNDER Piezoelectric Actuators,'' Sensors and Actuators. A, Physical, 69(1):33—38.

Study of RAINBOW Actuator and its Intergation with SMA

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