Title:
【発明の名称】磁気ひずみ粉末複合材料及びその製造方法
Document Type and Number:
Japanese Patent JPH06507676
Kind Code:
A
Abstract:
Magnetostrictive powder composite and method for the manufacturing of the magnetostrictive powder composite. The powder composite according to the invention is preferably used as a magnetostrictive element in sound projectors and vibration generators, transducers, actuators and in linear motors. The powder composite consists of magnetostrictive powder grains with chemical composition (RE)xT1-x, where RE represents one or a mixture of several rare earth metals, T represents Fe, Ni, Co or Mn or a mixture of these metals and x represents atomic fraction assuming a value between 0 and 1, whereby the grains are held together by a binder. The powder composite is formed in such a way that it exhibits a homogeneous magnetic flux, has a good strength and can be made with a built-in precompression. It can be equipped with coolant channels and/or with coil loops. The powder composite is produced by pressing together the magnetostrictive powder grains and the binder in order to plastically deform the grains, either completely or partially, which causes the magnetic domains in the grains to align perpendicularly to the applied compression pressure. In an alternative mode of execution according to the invention isostatic pressing is used.
Inventors:
Seder, Toldo
Application Number:
JP51016992A
Publication Date:
September 01, 1994
Filing Date:
May 19, 1992
Export Citation:
Assignee:
Proengco Actie Borrag
Foux Technology Commendate Borag
Foux Technology Commendate Borag
International Classes:
C22C1/04; B29C70/58; B29C70/62; C04B14/34; C04B14/36; C22C32/00; C22C33/02; C22C38/00; C22C49/00; H01F1/03; H01F1/24; H01F1/26; H01L41/20; (IPC1-7): C22C1/04; C22C1/04; C22C33/02; C22C38/00; H01L41/20
Attorney, Agent or Firm:
Chika Takagi (2 outside)