Title:
【発明の名称】セラミック及びその製造方法
Document Type and Number:
Japanese Patent JP2003523917
Kind Code:
A
Abstract:
The present invention provides a process for producing alumina matrix carbide and boride reinforced ceramic composites wherein for any particular composite, the relative density is about 97% or more of the theoretical density. The composites are prepared in a container wherein the interior surfaces of the container are graphite and have a protective coating consisting of a first layer comprising silicon carbide and boron carbide with a binder and a second layer comprising silicon carbide particles, wherein the protective coating prevents carbon bleed-through and the protective coating maintains a boride-containing equilibrium atmosphere during the process. The present invention further provides an alumina-based ceramic composite which comprises a metal carbide preferably selected from the group consisting of silicon carbide, titanium carbide and zirconium carbide, and mixtures thereof, and a boride preferably selected from the group consisting of boron carbide, titanium boride, or zirconium boride, and mixtures thereof. Finally, the present invention provides a protective coating for a surface comprising a first layer of a silicon carbide and a boron carbide in a binder and a second layer comprising a silicon carbide wherein the protective coating is able to withstand repeated exposure to high temperature.
Inventors:
Yang, Sai
Application Number:
JP2001561697A
Publication Date:
August 12, 2003
Filing Date:
January 03, 2001
Export Citation:
Assignee:
Sea-Max Technology, Inc.
International Classes:
C04B35/10; B24C5/04; C04B35/117; C04B35/64; C04B35/80; C04B41/52; F27B14/10; F27D1/00; F27D1/16; F27D3/16; (IPC1-7): C04B35/10; C04B35/64; F27B14/10
Attorney, Agent or Firm:
Akira Asamura (3 outside)