Tohoku University Technology: Magnetostrictive composite material and its manufacturing method: T19-755
Relatively soft material with excellent magnetostrictive properties
Since a flexible and soft magnetostrictive material does not exist,a soft magnetostrictive composite has been developed by mixing magnetostrictive material with resin. Wire and thin sheet from iron-based magnetostrictive alloy have also been developed as filler embedded in the matrix. However, although these magnetostrictive composite materials are soft, strong processing causes modification in the internal crystal orientation and generates internal defect, resulting in a significant reduction in magnetostrictive properties. In addition, since the filler material consisting of magnetostrictive material of predetermined dimension is embedded into the matrix, the composite material becomes a bit hard. This invention is able to provide a magnetostrictive composite material which is relatively soft with excellent magnetostrictive properties, and its manufacturing method. This invention consists of an iron based magnetostrictive alloy which is characterized by a large number of wire shape having a predetermined range of diameter and length dispersed in a resin matrix which has excellent flexibility and softness. It also has an excellent magnetostrictive properties since the strong processing has only a limited impact on magnetostrictive properties modification.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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