Method for producing ceramic sintered body, and method and device for producing ceramic molded body

Patent metadata

Field	Value
Publication number	US-11027454-B2
Application number	US-201716074683-A
Country	US
Kind code	B2
Filing date	Feb 2, 2017
Priority date	Feb 5, 2016
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.

First claim

What is claimed is:

1. A method for producing a ceramic compact on a substrate, the method comprising:
heating the substrate at a temperature ranging from 150° C. to less than 400° C. to prepare a heated substrate,
spraying a surface of the heated substrate with a slurry comprising a plurality of ceramic particles, a liquid dispersion medium, and a dispersant;
and volatilizing the liquid dispersion medium;
wherein a concentration of the ceramic particle in the slurry is from 20% to 40% by volume, and
wherein a content of the dispersant in the slurry is from 0.1 to 10 parts by volume based on 100 parts by volume of the ceramic particles.

2. The method according to claim 1 ,
wherein the dispersion medium comprises a water or an alcohol.

3. The method according to claim 1 , wherein the substrate is made of at least one material selected from the group consisting of a metal and a ceramic.

4. The method according to claim 1 , wherein the ceramic particles have an average diameter of a range from 100 nm to 10 μm.

5. The method according to claim 1 , wherein the slurry does not contain a polymer binder.

6. The method according to claim 1 , wherein the resulting ceramic compact has a ceramic particle filling density of 85% or more based on bulk density.

Assignees

• Japan Fine Ceramics Ct
• Noritake Co Ltd
• Toto Ltd
• Ngk Insulators Ltd
• Ngk Spark Plug Co

Inventors

• Kimura Teiichi
• Suehiro Satoshi

Classifications

• C04B2235/60

  Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms · CPC title

• C04B41/5031

  Alumina · CPC title

• C04B2235/5445

  submicron sized, i.e. from 0,1 to 1 micron · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• C04B35/62218

  obtaining ceramic films, e.g. by using temporary supports · CPC title