Title:
【発明の名称】機械的共振マーカ監視システム用の金属ガラス合金
Document Type and Number:
Japanese Patent JP2002505374
Kind Code:
A
Abstract:
A glassy metal alloy consists essentially of the formula FeaCobNicMdBeSifCg, where "M" is at least one member selected from the group consisting of molybdenum, chromium and manganese, "a-g" are in atom percent, "a" ranges from about 19 to about 29, "b" ranges from about 16 to about 42, "c" ranges from about 20 to about 40, "d" ranges from about 0 to about 3, "e" ranges from about 10 to about 20, "f" ranges from about 0 to about 9 and "g" ranges from about 0 to about 3. The alloy can be cast by rapid solidification into ribbon, annealed to enhance magnetic properties, and formed into a marker that is especially suited for use in magneto-mechanically actuated article surveillance systems. Advantageously, the marker is characterized by substantially linear magnetization response to an applied magnetic field in the frequency regime wherein harmonic marker systems operate magnetically. Voltage amplitudes detected for the marker are high, and interference between surveillance systems based on mechanical resonance and harmonic re-radiance is virtually eliminated.
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Inventors:
Hasegawa, Ryuusuke
Martice, ronald
Martice, ronald
Application Number:
JP2000513295A
Publication Date:
February 19, 2002
Filing Date:
September 25, 1998
Export Citation:
Assignee:
Allied Signal Incorporated
International Classes:
C21D6/00; C22C45/00; C22C45/02; G08B13/24; H01F1/153; (IPC1-7): C22C45/02; C21D6/00; H01F1/153
Attorney, Agent or Firm:
Toshio Takayama