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Patent Searching and Data


Title:
BIOENGINEERING, INDUSTRIAL MATERIAL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH10324584
Kind Code:
A
Abstract:

To easily obtain a bloengineering material such as reinforcement of teeth and bones and an industrial material such as electric parts in a short time by heating and calcining a material such as apatite, ferroelectric barium titanate, ferroelectric calcium titanate and tricalcium phosphate which can be converted into ceramics, and electrifying the surface of the material by polarization treatment into negative or positive charges.

After a material which can be converted into a ceramic material is heated and calcined, the material is brought into contact with an electrode to electrify the surface into positive or negative charges and then the material is cooled to room temp. to obtain a bioengineering or industrial material. It is preferable to calcine the material in water vapor because lattice HO- is not vaporized. The material which can be converted into a ceramic material is preferably calcined at 1,200°C heating and calcining temp. till a crystal phase is produced and the material is preferably polarized at 200 to 350°C with 100 to 120 V voltage applied. Hydroxyapatite ceramic chips are heated and calcined in water vapor to obtain a crystal, which is then polarized to produce the face N with negative charges on the surface so as to obtain an artificial bone.


Inventors:
YAMASHITA KIMIHIRO
UMEGAKI TAKASHI
OIKAWA NORIYUKI
Application Number:
JP14706897A
Publication Date:
December 08, 1998
Filing Date:
May 22, 1997
Export Citation:
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Assignee:
YAMASHITA KIMIHIRO
International Classes:
A61C8/00; A61L27/00; C01B25/32; C04B41/80; (IPC1-7): C04B41/80; A61C8/00; A61L27/00; C01B25/32
Attorney, Agent or Firm:
菊池 武胤