Dielectric ceramic capacitor comprising non-reducible...

Details Dielectric ceramic capacitor comprising non-reducible... Dielectric ceramic capacitor comprising non-reducible...

2007-02-06

2007-02-06

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

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

C501S136000, C361S321400

Reexamination Certificate

active

11146847

ABSTRACT:
A dielectric ceramic, and capacitor with the ceramic, wherein the ceramic has: about 94–99.9 wt % a first component defined by Formula 1;in-line-formulae description="In-line Formulae" end="lead"?[(Ca1-xSrx)O]m(Zr1-yTiy)O2Formula 1in-line-formulae description="In-line Formulae" end="tail"?wherein:x is no more than about 0.6; andy is no more than about 0.1; andm is at least about 0.85 to no more than about 1.15; andabout 0.1–5 wt % a secondary component defined by Formula 2;in-line-formulae description="In-line Formulae" end="lead"?aSiO2-b[αB2O3-(1−α)Li2O]-cAOFormula 2in-line-formulae description="In-line Formulae" end="tail"?wherein:a, b and c are selected to lie within the region defined by points A(a=15, b=0, c=85), B(a=70, b=0, c=30), C(a=0, b=70, c=30) and D(a=0, b=15, c=85) of a ternary diagram wherein a is mole percent SiO2; b is mole percent αB2O3-(1−α)Li2O; and c is mole percent AO and a+b+c=100 including the lines BC, CD and AD but excluding the line AB;α is 0 to 1;A is selected from Mg, Ca, Sr, Ba or a combination thereof; and0–2 wt % MnO2.

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