Low-fire X7R compositions

Details Low-fire X7R compositions Low-fire X7R compositions

1992-07-20

1994-03-22

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

501137, 501138, 3613215, C04B 3546, H01G 410, H01G 412

Patent

active

052964264

ABSTRACT:
A composition for forming a densified ceramic dielectric body, the composition consisting essentially of (a) about 96.0-98.0 wt. % barium titanate having an average particle size of 0.5-1.25 microns; (b) 0.3-1.2 wt. % niobium oxide or precursor thereof; (c) 0.4-1.2 wt. % zinc oxide or precursor thereof; (d) 0.1-1.2 wt. % neodymium oxide or precursor thereof; (e) 0.15-0.75 wt. % boron oxide or precursor thereof; and (f)0-0.1 wt. % manganese oxide or precursor thereof. This composition can be used to form the dielectric layers in multilayer electrical devices such as circuits and capacitors.

REFERENCES:
patent: 3473958 (1969-10-01), Wakii
patent: 4014707 (1977-03-01), Tanaka et al.
patent: 4447855 (1984-05-01), Lagrange et al.
patent: 4459364 (1984-07-01), McSweeney et al.
patent: 4640905 (1987-02-01), Burn
patent: 4766027 (1988-08-01), Burn
patent: 4803591 (1989-02-01), Miyashita et al.
patent: 4845062 (1989-07-01), Burn
patent: 4855266 (1989-08-01), Burn

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