Dielectric ceramic composition

摘要

The invention relates to a dielectric ceramic composition that can be baked in a short time in the atmosphere, neutral atmosphere or reducing atmosphere at baking temperature of 800 DEG to 1000 DEG C. In the ceramic components expressed by PbTiX(Mg1/2Nb2/3)Y(Ni1/2W1/2)ZO3 (where X+Y+Z=1), PbO is added by 1.0 to 25.0 mol % and NiO by 1.0 to 15.0 mol % as subsidiary components, to the temporarily baked powder of the main component dielectric ceramic composition composed in the pentagonal region having the vertices at compositions A, B, C, D, E expressed by numerical values in the following square brackets, in the system of trigonometric coordinates having the vertices at PbTiO3, Pb(Mg1/3Nb2/3)O3 and Pb(Ni1/2W1/2)O3, A is x=2.5, y=9.5, z=2.5; B is x=12.5, y=85.0, z=2.5, C is x=60.0, y=10.0, z=30.0, D is x=40.0, y=10.0, z=50.0, E is x=2.5, y=90.0, z=7.5 (where all untis are mol %) so that a laminate ceramic capacitor or thick film capacitor of large capacity that can be baked densely in a short time at low baking temperature of below 1000 DEG C. will be obtained.