Low temperature sintered very high frequency laminated sheet type electrical inductance, sheet type magnetic beal material and its preparation method |
Title： |
| Low temperature sintered very high frequency laminated sheet type electrical inductance, sheet type magnetic beal material and its preparation method |
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Application Number： |
02153785 |
Application Date： |
2002/12/06 |
Announcement Date： |
2003/04/16 |
Pub. Date： |
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Publication Number： |
1411008 |
Announcement Number： |
1191594 |
Grant Date： |
2005-3-2 |
Granted Pub. Date： |
2005-3-2 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H01F 17/00, H01F 1/34, H01F 41/02 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Bai Yang, Zhou Ji, Li Longtu |
Key Words： |
very high frequency, laminated sheet type electrical inductance, sheet type magnetic beal |
Abstract： |
The VHF slice type inductance and the slice type bead material are obtained by sintering the admixture of BaSrPbZnCoCu and the sintering supporting agent being mixed according to certain weight percentage rate. Fe2O3, BaCO3, SrCO3, PbO, Co3O4 etc. are used as the main materials to prepare BaSrPbZnCoCu. The composite sintering supporting agent is prepared from Bi2O3+Al2O3+PbO+B2O3+SiO2+CaF2+LiF. The material possesses the properties of magnetic permeability 2-40, cut-off frequency 800 MHz to more than 1.8 GHz, the variety rate of specific temperature less than 10 to the power -6/deg.C and resistivity larger than 10 to the power 9 ohm.cm. The invention realizes the low temperature sintering, providing the features of high density, the even size of crystal grain and the stable performance. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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