COPPER-OXIDE AS A SINTERING ADDITIVE FOR BARIUM-TITANATE CERAMICS

CuO acts as a versatile sintering additive for BaTiO3 ceramics. The re sponse is shown to exist in three directions: 1. liquid-phase formatio n at comparatively low temperatures, 2. aptitude as an internal suscep tor for secondary phase initiated microwave sintering and 3. grain-bou ndary modifier mostly by incorporation of Cu ions on regular Ti sites in barium titanate. After a short literature survey own investigations will be represented by particular attention to the first two points.