Title:
【発明の名称】圧電性磁器の製造方法
Document Type and Number:
Japanese Patent JP2536671
Kind Code:
B2
Abstract:
PURPOSE:To obtain a piezoelectric ceramics having high reliability of the quality and composed of a dense ceramic surface layer and a porous core part at a low cost by impregnating a slurry composed of a piezoelectric ceramic powder and a binder in a porous sheet which disappears by baking, forming the impregnated sheet and baking the product. CONSTITUTION:A slurry composed of a piezoelectric ceramic powder (e.g. powder of lead titanate-lead zirconate ceramics) and a binder is impregnated in and attached to a porous sheet which disappears by baking (e.g. foamed polyurethane sheet) and the sheet is formed. The formed material is baked at a prescribed temperature to obtain the objective piezoelectric ceramics having a dense ceramic layer on the surface and containing porous layer as a core part.
Inventors:
KITSUTAKA TOSHIHIKO
TAMURA HIROSHI
TAMURA HIROSHI
Application Number:
JP18241690A
Publication Date:
September 18, 1996
Filing Date:
July 09, 1990
Export Citation:
Assignee:
MURATA MANUFACTURING CO
International Classes:
B32B5/18; B32B5/14; C04B38/00; C04B38/06; H01L41/187; H01L41/39; (IPC1-7): C04B38/00; B32B5/14; B32B5/18; C04B38/06; H01L41/187; H01L41/24
Domestic Patent References:
| JP61136973A | ||||
| JP61106468A | ||||
| JP6144779A |
Attorney, Agent or Firm:
Tsutomu Shimoichi