Title:
METHOD FOR PRODUCING SUPER-MAGNETOSTRICTIVE MATERIAL UNDER MICRO-GRAVITY ATMOSPHERE
Document Type and Number:
Japanese Patent JP3230581
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a high performance magnetostrictive material with a simple treatment in a short time.
SOLUTION: In the method for producing the super-magntostrictive material having the peculiarity, in which under micro-gravity atmosphere and under existence of magnetic field, molten super-magnetostrictive alloy is rapidly cooled at least at 50°C/sec temperature dropping speed to perform the unidirectional solidification, the molten super-magnetostrictive alloy is rapidly cooled by dropping and colliding onto a solid surface for rapid-cooling, and the temperature on this solid surface is made to lower than the solidifying point of this molten material by ≥1,000°C, and the magnetic force on the solid surface is made to ≥0.01 tesla.
Inventors:
Minagawa, Hidenori
Okuya, Takeshi
Nagai, Hideaki
Tsurue, Takashi
Nakada, Yoshinori
Kamata, Keiji
Okuya, Takeshi
Nagai, Hideaki
Tsurue, Takashi
Nakada, Yoshinori
Kamata, Keiji
Application Number:
JP2000000276045
Publication Date:
September 14, 2001
Filing Date:
September 12, 2000
Export Citation:
Assignee:
NATL INST OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY METI
Minagawa, Hidenori
Okuya, Takeshi
Nagai, Hideaki
Tsurue, Takashi
Nakada, Yoshinori
Minagawa, Hidenori
Okuya, Takeshi
Nagai, Hideaki
Tsurue, Takashi
Nakada, Yoshinori
International Classes:
B22D21/00; B22D23/00; B22D25/00; B22D27/02; B22D27/04; B64G99/00; C22C33/04; C22C38/00; H01F1/03; H01L41/20; (IPC1-7): B22D27/04; B22D21/00; B22D23/00; B22D25/00; B22D27/02; H01L41/20