Composite multilayer parts

Details Composite multilayer parts Composite multilayer parts

1993-03-02

1995-12-19

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

252 6258, 252 626, 252 6262, 501 10, 501 49, 501 32, B32B 900

Patent

active

054767288

ABSTRACT:
Non-magnetic ferrite composition used in the composite multilayer part of the invention is based on ferrite containing Fe.sub.2 O.sub.3 and CuO and/or ZnO and further contains 1 to 30% by weight of four oxide components of MgO, BaO, SiO.sub.2, and B.sub.2 O.sub.3 or five or six oxide components including the four oxide components plus at least one of SnO.sub.2 and CaO. Since the use of this non-magnetic ferrite minimizes the difference in coefficient of linear expansion between different materials used, the non-magnetic ferrite, when applied to composite multilayer parts such as shielded multilayer chip inductors, shielded multilayer transformers, and multilayer LC composite parts, prevents occurrence of cracks in the interior and avoids a lowering of circuit resistance due to precipitation of CuO, ZnO or the like at the interface between different materials. There result composite multilayer parts with improved characteristics.

REFERENCES:
patent: 4956114 (1990-09-01), Watanabe et al.

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