Title:
ULTRA-MAGNETOSTRICTIVE ALLOY
Document Type and Number:
Japanese Patent JP3313386
Kind Code:
B2
Abstract:
PURPOSE: To obtain an ultra-magnetostrictive alloy having high Curie temp. and superior magnetostrictive properties by incorporating rare earth elements, Fe and/or Co, and at least one element among B, C, and N in specific proportions.
CONSTITUTION: An alloy having a composition represented by a general formula RXT100-X-YMY [where R means at least one kind among rare earth elements including Y, T means Fe and/or Co, M means at least one element among B, C, and N, and the symbols (X) and (Y) stand for, by atom, 20-60% and 0-30%, respectively] is used and rare earth elements and Fe or Co are melted in the above proportion and an ingot of the resulting molten metal is machined and subjected to crystal control melting in an atmosphere containing N gas, such as N gas, NH3 gas, and CN gas, to incorporate N, or, an alloy containing rare earth elements and Fe or Co and further containing specific amounts of B, C, etc., is refined and an ingot of the resulting molten alloy is subjected to homogenizing heat treatment. By this method, the ultra-magnetostrictive alloy where coercive force is reduced without deteriorating magnetostrictive properties and other magnetic properties can be obtained.
Inventors:
Tomomi Funayama
Isao Sakai
Tadahiko Kobayashi
Masashi Sahashi
Isao Sakai
Tadahiko Kobayashi
Masashi Sahashi
Application Number:
JP1306592A
Publication Date:
August 12, 2002
Filing Date:
January 28, 1992
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
C22C19/07; C22C19/03; C22C28/00; C22C38/00; (IPC1-7): C22C38/00; C22C19/03; C22C19/07; C22C28/00
Domestic Patent References:
| JP3281757A | ||||
| JP583294A |
Attorney, Agent or Firm:
Takehiko Suzue
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