Method for preparing colored zirconium oxide ceramic component

A technology for zirconia ceramics and zirconia powder, which is applied in the field of preparing colored zirconia ceramic parts, can solve the problems of mutual contamination of colorants, uneven coloring, complicated procedures, etc., so as to save production time and cost, improve production efficiency, reduce cost effect

Inactive Publication Date: 2010-10-13
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the colored zirconia ceramics currently produced are still limited to white and black, and the preparation process of traditional colored zirconia ceramics (such as ball milling, etc.) is complicated, which is easy to cause problems such as uneven coloring and mutual contamination of colorants. Restricts the production and wider application of colored zirconia

Method used

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  • Method for preparing colored zirconium oxide ceramic component
  • Method for preparing colored zirconium oxide ceramic component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh the ingredients for injection molding according to the following formula: Y-ZrO 2 Powder 400g, LDPE (low-density polyethylene) 8.37g, HDPE (high-density polyethylene) 2.99g, PW (paraffin) 36.75g, SA (stearic acid) 5.98g, DBP (butylene phthalate) 2.39g. The above ingredients for injection molding were kneaded at 175° C. for 10 min on an open mixer to obtain feed. Put the obtained feed into the injection molding machine for injection. The injection parameters are: cylinder temperature 170°C-160°C-150°C-140°C (one stage-two stages-three stages-four stages), injection pressure 35%, injection speed 35m / s, the holding pressure is 20%, the holding speed is 30m / s, the holding time is 5.0s, (the base pressure is 300MPa) the green body microstructure obtained is shown in figure 1 . Then degrease the green body obtained by injection molding, and use buried powder thermal degreasing: embed the sample in γ-alumina powder for 4 hours and heat up to 200°C, then keep it for 7...

Embodiment 2

[0025] Weigh the ingredients for injection molding according to the following formula: Ce-ZrO 2 Powder 300g, PMMA (polymethylmethacrylate) 5.33g, HDPE (high-density polyethylene) 6.01g, PW (paraffin) 35g, SA (stearic acid) 4.02g, DBP (butylene phthalate) ) 1.28g. The selected injection molding ingredients were kneaded at 170° C. for 10 min on an open kneader to obtain feed. Put the obtained feed into the injection molding machine for injection s. The injection parameters are: cylinder temperature 170°C-160°C-150°C-140°C (one stage-two stages-three stages-four stages), injection pressure 40%, injection speed 35m / s, the holding pressure is 30%, the holding speed is 30m / s, and the holding time is 4.0s, (the base pressure is 300MPa). The green body obtained by injection molding is put into a non-polar organic solvent (such as n-heptane) for degreasing, the degreasing temperature is 40°C, and the time is 6 hours. The green body after degreasing is placed in oven and dried, and ...

Embodiment 3

[0027] Weigh the ingredients for injection molding according to the following formula: Y-ZrO 2 Powder 300g, PP (polypropylene) 5.83g, HDPE (high density polyethylene) 4.01g, PW (paraffin) 32g, SA (stearic acid) 3.02g, DBP (butylene glycol phthalate) 1.01g. The selected injection molding ingredients were kneaded at 175° C. for 10 min on an open kneader to obtain feed. Put the obtained feed into the injection molding machine for injection. The injection parameters are: barrel temperature 175°C-165°C-155°C-145°C (one stage-two stages-three stages-four stages), injection pressure 45%, injection speed 40m / s, the holding pressure is 30%, the holding speed is 30m / s, and the holding time is 4.0s, (the base pressure is 300MPa). Then preliminarily degrease the green body obtained by injection molding, and use embedded powder thermal degreasing: embed the sample in industrial activated carbon powder for 4 hours and raise the temperature to 170°C, then keep it for 6 hours, and then cool...

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Abstract

The invention discloses a method for preparing a colored zirconium oxide ceramic component and belongs to the technical field of ceramic material preparation and ceramic injection molding. The method comprises the following steps of: mixing the following injection molding ingredients in percentage by mass: 85 to 90 percent of zirconium oxide powder, 8 to 12 percent of low-melting-point binder and2 to 4 percent of non-soluble skeleton binder; performing injection molding and blank degreasing; soaking a degreased blank in coloring ion-containing solution; and removing the binder from the blankand sintering the blank to obtain colored zirconium oxide ceramic, wherein dying degree can be controlled by controlling soaking time. The method provided by the invention has the advantages of simple process, low cost, capability of saving coloring agent, environmental friendliness, combination of ceramic material preparation and molding technology and suitability for industrial production of colored zirconium oxide ceramic.

Description

technical field [0001] The invention belongs to the fields of ceramic material preparation technology and ceramic injection molding technology, and in particular relates to a method for preparing colored zirconia ceramic parts. The method is realized by soaking a green body after degreasing by injection molding in a coloring solution. Background technique [0002] Zirconia ceramics have excellent properties such as high strength, high hardness, good toughness, corrosion resistance and wear resistance, and are widely used in various fields, such as knives, watch cases, molds, valves, refractory materials, oxygen sensors, solid fuels battery etc. In recent years, with the continuous improvement of people's requirements for decorations, colored zirconia ceramics have become the new favorite in the field of high-end decoration due to their excellent mechanical properties, bright and elegant colors, metallic luster, environmental friendliness, non-toxic and non-allergic character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B41/85
Inventor 谢志鹏刘冠伟
Owner TSINGHUA UNIV
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