Preparation of new PTCR material by particle electrification processing

Norio Shinya; Takehiro Dan; Mitsuru Egashira; Junro Kyono; Hiroshi Fudouzi

doi:10.1117/12.267130

14 February 1997 Preparation of new PTCR material by particle electrification processing

Norio Shinya, Takehiro Dan, Mitsuru Egashira, Junro Kyono, Hiroshi Fudouzi

Proceedings Volume 3040, Smart Structures and Materials 1997: Smart Materials Technologies; (1997) https://doi.org/10.1117/12.267130
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

The purpose of the present work is to develop the materials with new functions by combining two kinds of particles electrified reciprocally. This paper reports a preparation method and the positive temperature coefficient of resistivity (PTCR) properties of complex particles consisting of semiconductive BaTiO₃ granules and metallic indium powder particles. The conclusion obtained by the present experiment are as follows. (1) Vibrating cylindrical electrode can forced-electrify metal, semiconductor and insulator particles positively or negatively. (2) When the particles electrified reciprocally are mixed in the same region at the same time, complex particles can be created by the electrostatically attractive force working between the two kinds of particles. (3) Indium-semiconductive BaTiO₃ complex particles made by this processing offer the new PTCR material which can be used in arbitrary shapes by filling and packing or drawing and painting.

Citation Download Citation

Norio Shinya, Takehiro Dan, Mitsuru Egashira, Junro Kyono, and Hiroshi Fudouzi "Preparation of new PTCR material by particle electrification processing", Proc. SPIE 3040, Smart Structures and Materials 1997: Smart Materials Technologies, (14 February 1997); https://doi.org/10.1117/12.267130

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