Methods for producing a silicon-containing zirconia calcined body and a silicon-containing zirconia sintered body

Patent metadata

Field	Value
Publication number	US-9522848-B2
Application number	US-201414477232-A
Country	US
Kind code	B2
Filing date	Sep 4, 2014
Priority date	Sep 4, 2014
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

A method for producing a silicon-containing zirconia calcined body includes wet mixing a mixture to obtain a mixed slurry, with the mixture including a silicon-containing zirconia powder, a sodium carbonate powder, a tetraethoxysilane, and an adhesive; drying the mixed slurry to obtain a caked mass; grinding and sieving the caked mass to obtain a mixed powder; pressurizing and shaping the mixed powder to obtain a blank; and calcining the blank in an environment at 900-1200° C. to obtain a silicon-containing zirconia calcined body. The silicon-containing zirconia calcined body can be sintered at 1415-1450° C. into a silicon-containing zirconia sintered body, with a shrinkage ratio during sintering the silicon-containing zirconia calcined body into the silicon-containing zirconia sintered body being 22-31%.

First claim

What is claimed is:

1. A method for producing a silicon-containing zirconia sintered body with a monoclinic phase comprising:
wet mixing a mixture to obtain a mixed slurry, with the mixture including a silicon-containing zirconia powder, a sodium carbonate powder, a tetraethoxysilane solution, and an adhesive; drying the mixed slurry to obtain a caked mass, with the caked mass formed by bonding the silicon-containing zirconia powder and the sodium carbonate powder with the adhesive;
grinding and sieving the caked mass to obtain a mixed powder; pressurizing and shaping the mixed powder to obtain a blank; calcining the blank in an environment at 900-1200° C. to obtain a silicon-containing zirconia calcined body; and sintering the silicon-containing zirconia calcined body at 1415-1450° C. into a silicon-containing zirconia sintered body, with a shrinkage ratio during sintering the silicon-containing zirconia calcined body into the silicon-containing zirconia sintered body being 22-31%.

2. The method for producing a silicon-containing zirconia sintered body with a monoclinic phase as claimed in claim 1 , with sintering the silicon-containing zirconia calcined body including heating the silicon-containing zirconia calcined body to 900° C. at a temperature increasing rate of 10° C./min; heating the silicon-containing zirconia calcined body to 1415-1450° C. at a temperature increasing rate of 5° C./min; and maintaining the temperature for 0.5-1 hour to obtain the silicon-containing zirconia sintered body.

Assignees

• Univ Kaohsiung Medical

Inventors

• Wang Moo-Chin
• Chu Hsueh-Liang
• Wang cheng-li
• Ko Horng-Huey

Classifications

• C04B2235/3418

  Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint · CPC title

• C04B2235/3201

  Alkali metal oxides or oxide-forming salts thereof · CPC title

• C04B2235/6562

  Heating rate · CPC title

• C04B35/634

  Polymers (C04B35/636 takes precedence) · CPC title

• C04B2235/442

  Carbonates · CPC title