BARIUM CARBONATE PARTICLE POWDER, METHOD FOR PRODUCING IT, AND METHOD FOR PRODUCING PEROVSKITE-TYPED BARIUM TITANATE

摘要

[assignment] ; The present invention provides an excellent dispersibility of barium carbonate particle powder, and a method of manufacture of a rod-shaped small aspect ratio. ; [MEANS FOR SOLVING PROBLEMS] ; Rod-like barium carbonate particle powder of the present invention in particle surface includes a rod-like particles having one or two or more parts and the valley, and the aspect ratio of the rod-shaped particles 1.5 to 4.5. BET specific surface area of ​​the rod-like particles is more than 15 ㎡ / g. With respect to the long axis of the rod-shaped particles valley portion it is provided in a direction perpendicular or oblique direction. Provides a method of producing acicular barium carbonate particle powder, rod-like barium carbonate particles with an aqueous slurry process for the heat treatment at above 50 ℃ powder containing. ; Rod-like barium carbonate particle powder, the perovskite barium titanate, BET specific surface area, the valley portion