Zirconium oxide ceramic material of ytterbium oxide and yttrium oxide costabilize

A technology of zirconia ceramics and stabilized zirconia, which is applied in the field of zirconia-based ceramic products and preparation, which can solve the problems of affecting mechanical properties and not being able to obtain TZP ceramics, so as to avoid hard agglomeration, avoid powder particle growth, and simplify preparation The effect of craft

Inactive Publication Date: 2008-11-26
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reducing Y 2 o 3 The content usually causes a phase change during cooling and cannot obtain TZP ceramics; increase Y 2 o 3 The content will affect its mechanical properties to a certain extent
It can be seen that only using Y 2 o 3 As a stabilizer, the TZP ceramic material has certain limitations in its mechanical properties

Method used

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  • Zirconium oxide ceramic material of ytterbium oxide and yttrium oxide costabilize
  • Zirconium oxide ceramic material of ytterbium oxide and yttrium oxide costabilize
  • Zirconium oxide ceramic material of ytterbium oxide and yttrium oxide costabilize

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1 uses ytterbium oxide (Yb) with a purity of not less than 99.9% 2 o 3 ), yttrium oxide (Y 2 o 3 ) and monoclinic zirconia powder (average grain size less than 100 nanometers) as raw materials, the design finally obtains ytterbium oxide (Yb 2 o 3 ) molar percentage is 1.0%, yttrium oxide (Y 2 o 3 ) molar percentage is 1.0%. Select an appropriate amount of corresponding compounds according to the above-mentioned composition ratio, and ytterbium oxide (Yb 2 o 3 ) and yttrium oxide (Y 2 o 3 ) was dissolved in an appropriate amount of nitric acid to obtain a clear solution, and Y-TZP balls were used as the ball milling medium, mixed with monoclinic zirconia powder with an average grain size of less than 100 nanometers in absolute ethanol and ball milled for 24 hours. After ball milling, the suspension was dried with a rotary evaporator to obtain a precursor that encapsulates the powder. The precursor was calcined in air at 300°C for 1 hour to obtain zirco...

Embodiment 2

[0025] Embodiment 2 design finally obtains ZrO 2 Ytterbium oxide (Yb) in ceramics 2 o 3 ) molar percentage is 2.0%, yttrium oxide (Y 2 o 3 ) molar percentage is 1.0%, the powder is synthesized according to the method of Example 1, ceramics are prepared, and the sintering time is 1 hour. Prepared ZrO 2 The mechanical properties of ceramics are image 3 shown.

Embodiment 3

[0026] Embodiment 3 design finally obtains ZrO 2 Ytterbium oxide (Yb) in ceramics 2 o 3 ) molar percentage is 3.0%, yttrium oxide (Y 2 o 3 ) molar percentage is 1.0%, the powder is synthesized according to the method of Example 1, ceramics are prepared, and the sintering time is 1 hour. Prepared ZrO 2 The mechanical properties of ceramics are as follows image 3 shown.

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Abstract

A Yb2O3 and Y2O3 stabilized zirconium oxide-type ceramic material is prepared from the zirconium oxide nanoparticles through coating by Yb2O3 and Y2O3, and non-pressure sintering to obtain tetragonal zirconium oxide polycrystal (TZP) ceramics and full-stable cubic zirconium oxide (FSZ) ceramics.

Description

[0001] (The application date of this application is March 3, 2006, the application number is 200610024361.5, and the title of the invention is a divisional application of "zirconia ceramic material and preparation method co-stabilized by ytterbium oxide and yttrium oxide") technical field [0002] The invention relates to tetragonal zirconia polycrystal (TZP) and fully stabilized zirconia ceramic (FSZ) co-stabilized by ytterbium oxide and yttrium oxide and a preparation method. More precisely, it provides an ytterbium oxide (Yb 2 o 3 ), yttrium oxide (Y 2 o 3 ) and monoclinic zirconia powder as raw materials, the powder is prepared by encapsulation technology, and at low stabilizer content, the densification is achieved through pressureless sintering to obtain TZP ceramics with excellent mechanical properties and fully stabilized zirconia ceramics with electrical properties ( FSZ) and a preparation method thereof, which belong to the field of zirconia-based ceramic products...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C04B35/48C04B35/626
Inventor阚艳梅王佩玲约瑟夫·务伦杰奥默·范德比斯特
OwnerSHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI