National Institute for Materials Science

Other

Japan Science and Technology Corporation

Polymatech Co., Ltd.

Independent Administrative Institution National Institute for Materials Science

Hitoshi Wada

Tsukasa Kiyoshi

Masayuki Tobita

Toshihisa Asano

Hideaki Konno

Takao Takeuchi

Nobuya Banno

Shinji Matsumoto

Nobuko Wakayama

Eiji Homma

Osamu Ozaki

A strong-magnetic-force field generating device is provided which can increase a magnetic force field and which can make the magnetic force field spatially uniform without adding an additional superconducting magnet to a commercially-available superconducting magnet. In the strong-magnetic-force field generating device, a disc ferromagnetic element is arranged inside a bore and above the equatorial plane thereof in a solenoid superconducting magnet, whose central axis is directed in a vertical direction, so as to be symmetric with respect to the central axis; and a ring ferromagnetic element is arranged above the disc ferromagnetic element so as to be out of contact with the disc ferromagnetic element and so as to be symmetric with respect to the central axis.

Ferro-magnetic force field generator

An apparatus for manufacturing an anisotropic formed body in which functional, magnetic fine particles are oriented in a specific direction within a matrix and in which anisotropy is given to properties attributable to the functional fine particles. The apparatus allows use of a wide variety of materials as the functional fine particles and realizes an anisotropy which is parallel and of a uniform interval within a large area. Further, a method for manufacturing an anisotropic formed body, includes applying, by using a superconducting magnet device, a uniform and parallel magnetic field with magnetic lines of force at equal intervals and parallel to each other, to a mold in which the matrix is filled with a liquid molding material containing functional, magnetic fine particles, to orient the functional fine particles in a direction of the magnetic lines of force, whereby the liquid molding material subsequently hardens.

Apparatus and method for manufacturing an anisotropic formed body

This invention provides a production method of Nb Al superconducting multifilamentary wire based on rapid-heating, quenching and transformation method, capable of producing a high-performance Nb Al superconducting multifilamentary wire by improving critical temperature thereof, upper critical field and critical current density. Upon a first stage heat treatment of beating a composite, in which bcc phase Nb&mdash;Al supersaturated solid solution is dispersed in Nb matrix, the bcc phase Nb&mdash;Al supersaturated solid solution ordered in temperature rise process is made disordered at an initial phase thereof and a non-reacting portion located adjacent is heated using a reaction heat generated when transforming this disordered bcc phase to A15 phase. Then, disordering of the bcc phase is promoted while propagating a high-temperature transformation region so as to automatically progress high-temperature beat treatment. As a result, a reaction-transformation is caused to block stacking fault from being generated in the A15 phase and crystal grain from being coarse and then, a second stage heat treatment for improving a long range ordering of the A15 phase is carried out.

Production method of Nb3Al superconducting multifilamentary wire

Magnets comprising main magnets formed by arranging a single main magnet or plural main magnets, and auxiliary magnets for uniformalizing the magnetic force of the main magnets in a predetermined space. The magnets uniformalize the magnetic force in space.

Uniform magnetic force generating magnet

Growing community of inventors

Tsukuba, Japan

Hitoshi Wada