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US 2006/0213325 A1Published application
Magnetostriction device
AssigneeSony Corporation
InventorsYoshio Ohashi, Masaru Uryu
Life of this patent
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Abstract
A magnetostriction device is made such that an impregnated composition material, such as phenol resin, a resin in which an inorganic material such as silica is dispersed into a phenol resin, an epoxy based resin, or an acrylic resin is impregnated and caked into holes of a magnetostrictive sintered material manufactured by a powder metallurgy method. This magnetostriction device has improved mechanical strength against external force.
Claims6
A magnetostriction device, comprising:
- a magnetostrictive sintered material manufactured by a powder metallurgy method using particles ground in an argon atmosphere to a particle size of approximately 10 μmesh, the magnetostrictive sintered material having a plurality of holes;
- and
- an impregnated composition material impregnated into the plurality of holes in the magnetostrictive sintered material.
A magnetostriction device, comprising:
- a magnetostrictive sintered material of Tb0.3Dy0.7Fe2 made of powder ground from Fe2Tb, Fe2Dy in an argon gas by a powder metallurgy method to a particle size of approximately 10 microns, the magnetostrictive sintered material having a plurality of holes;
- and
- an impregnated composition material impregnated into the plurality of holes in the magnetostrictive sintered material.
Dependencies are inferred from the claim text.