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Cerium stabilized cubic zirconia ceramic material and preparation method thereof

A technology of cubic zirconia and ceramic materials, applied in the field of cubic zirconia ceramic materials and their preparation, can solve the problems of mechanical property degradation, limited use environment temperature, etc., and achieves lower sintering temperature, full stability cost, stable zirconia Effect

Inactive Publication Date: 2013-01-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the study found that Y 2 o 3 Stable zirconia ceramic materials have some shortcomings in use, and their mechanical properties degrade rapidly in high-temperature and high-humidity environments, which limits the use of ambient temperature

Method used

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  • Cerium stabilized cubic zirconia ceramic material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, the specific process steps for preparing a cerium-stabilized cubic zirconia ceramic material are as follows:

[0029] (1) Sample weighing: Commercial zirconia ceramic powder and titanium oxide powder are used, of which 95wt% zirconia commercial powder and 5wt% titanium dioxide;

[0030] (2) Mixing: Put the weighed powder, absolute alcohol and ball mill into the ball mill tank for mixing. The ratio of material to ball is 1.5:1, and the mass ratio of alcohol powder to material is 4:1;

[0031] (3) Ball milling: ball mill the mixture, the speed of the ball mill is 50 rpm, and the milling time is 10 hours;

[0032] (4) Drying: Dry the ball-milled powder in an oven at a temperature of 100°C;

[0033] (5) Calcination: place the dried powder in a muffle furnace for calcination, the calcination temperature is 1000°C, and the holding time is 5h;

[0034] (6) Secondary ball milling: place the calcined powder in the ball mill again for ball milling, and t...

Embodiment 2

[0041] The process steps of this example are exactly the same as those of Example 1 above, the difference is that zirconia commercial powder is 90wt%, titanium dioxide is 10wt%, the sintering temperature is 1600°C, and the holding time is 5h, and a cerium-stabilized cubic zirconia ceramic material is obtained. .

Embodiment 3

[0043] The process steps of this example are exactly the same as those of Example 1 above, the difference is that zirconia commercial powder is 92wt%, titanium dioxide is 8wt%, the sintering temperature is 1600°C, and the holding time is 5h, and a cerium-stabilized cubic zirconia ceramic material is obtained. .

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Abstract

The invention discloses a cerium stabilized cubic zirconia ceramic material and a preparation method of the cerium stabilized cubic zirconia ceramic material. The cerium stabilized cubic zirconia ceramic material comprises the following compositions: 90-100wt% of commercial zirconia powder (80 mol% of zirconia, 20 mol% of ceric oxide), and 0-10wt% of titanium dioxide.The sintering preparation method comprises the following steps of: (1) sampling; (2)mixing; (3) performing ball-milling; (4)drying; (5)incinerating; (6) performing secondary ball-milling; (7) discharging and drying; (8) pelleting; (9) molding by dry pressing; (10) performing isostatic cool pressing; (11) sintering with high temperature to obtain the ceric oxide stabilized cubic zirconia ceramic materiel. The cerium stabilized cubic zirconia ceramic material provided by the invention has the advantages of whole stability and low cost, and can be widely applied to the fields such as jewelries, oxygen sensors, sensitive elements and high temperature electrode materials.

Description

technical field [0001] The invention relates to a cerium-stabilized cubic zirconia ceramic material and a preparation method thereof, belonging to the field of inorganic non-metallic (ceramic) materials. Background technique [0002] Zirconia ceramics are a class of promising new structural ceramics developed in the 1970s. In 1972, R.G.Garvie of Australia used CaO as a stabilizer to prepare partially stabilized zirconia ceramics (Ca-PSZ), and pointed out for the first time that partially stabilized ZrO 2 (PSZ) phase transformation toughening principle, which greatly expands the ZrO 2 Applications in the field of structural ceramics. [0003] Zirconia ceramics have excellent properties such as high temperature resistance, corrosion resistance, high strength, high hardness, and a thermal expansion coefficient close to steel. They are widely used in the field of structural ceramics. , precision machine tools, bioengineering and medical equipment and other industries have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 刘强赵广根杨秋红王永刚黄栋栋李韫含
Owner SHANGHAI UNIV
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