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Microspheres prepared from composition containing zirconium oxide and preparation method of microspheres

A technology of zirconium oxide and composition, which is applied in the field of composite zirconia microspheres and its preparation, can solve the problems of large market constraints of zirconia powder, low strength of zirconia balls, uneven distribution of material components, etc., and achieve energy saving And labor consumption, avoid secondary high temperature sintering, the effect of low equipment requirements

Active Publication Date: 2014-04-16
YAAN YUANCHUANG CERAMIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The existing ball forming technology usually mixes zirconia powder and other components mechanically and wet ball mills to obtain ball powder. This method leads to uneven distribution of material components, and the obtained zirconia balls have low strength and toughness. , and zirconia powder is greatly restricted by the market

Method used

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  • Microspheres prepared from composition containing zirconium oxide and preparation method of microspheres
  • Microspheres prepared from composition containing zirconium oxide and preparation method of microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Using traditional techniques, add 5wt% of the third component of silicon dioxide and 0.1mol% of yttrium oxide to the commercialized zirconia powder;

[0032] (2) After that, pour into the stirring mill and wet ball mill until the particle size D 50 Less than 0.6 microns;

[0033] (3) Add spray drying or oven drying. Moisture is less than 6% after drying;

[0034] (4) Slowly add the prepared powder into the rolling ball machine, and while rolling the powder, spray the composite binder solution containing PVA at a concentration of 0.1-0.8% by spraying until the obtained diameter is 0.1-5mm Zirconia composite ball seeds;

[0035] (5) Put the ball seeds into the ball rolling machine, while rolling the seeds and adding powder slowly, while spraying the composite binder solution with a concentration of 0.5-1.2% PVA in the form of spray, until the diameter reaches the required size. Zirconia composite ball blank. Then spray a small amount of water and continue rolling...

Embodiment 2

[0041] (1) Pre-place a certain amount of zirconia balls in the stirring mill, and prepare Zr 4+ Zirconium oxychloride solution with a concentration of 2mol / L, including the third component doping system of 5wt% alumina, 2wt% cerium oxide, 1wt% magnesium oxide, 5wt% calcium oxide, 2wt% silicon dioxide, and yttrium oxide 8mol%, heating and stirring to dissolve;

[0042] (2) Then add 2.5% polyethylene glycol relative to the mass of zirconia, and stir evenly;

[0043] (3) Finally, slowly add a solid-phase precipitant to the uniformly stirred solution. The precipitant is ammonium bicarbonate and urea, and mix with ball milling for 4 hours;

[0044] (4) up to Zr 4+ ion and Y 3+ The ions are completely precipitated, the reaction is completed, and the final pH value is controlled at about 7-8;

[0045] (5) The final prepared colloid is stored and aged for 8 hours;

[0046](6) After that, wash and filter with water;

[0047] (7) Mix the filtered filter cake with distilled water a...

Embodiment 3

[0055] The process flow of Example 2 is adopted, except that the third component added is 1 wt% of silicon dioxide.

[0056] The nano-ceramic ball green body prepared by this method was calcined at 1400°C, and the holding time was 2 hours. The microspheres of 0.8-1mm were selected, and the density of the ceramic tool was determined to be 6.02g / cm by the Azimiade drainage method. 3 , the theoretical density reaches 98.6%.

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Abstract

The invention relates to composite zirconium oxide microspheres and a preparation method thereof. The microspheres are prepared from yttrium oxide as a stabilizer of a zirconium oxide material. The microspheres comprises a doped system of third components including one or more of alumina, cerium oxide, copper oxide, magnesia, calcium oxide and silica, wherein the content of the yttrium oxide in the zirconium oxide is 0.1-8mol% while the total doping amount of the alumina, the cerium oxide, the copper oxide, the magnesia, the calcium oxide and the silica is 0-30wt%. According to the method, sediment dry gel is molded and further sintered to finish preparation of the composite zirconium oxide ceramic microspheres. The preparation method is simple in production technology, relatively low in cost, and applicable to industrialization. A lot of energy sources are saved for industrialization of the zirconium oxide ceramic microspheres. Meanwhile, the prepared ceramic microspheres disclosed by the invention have the characteristics of large density, durability, stability and the like.

Description

[0001] The present invention claims that the applicant submitted the application number CN201310451745.5 to the State Intellectual Property Office of China on September 29, 2013, and the title of the invention is "a microsphere made of a composition containing zirconium oxide and its preparation method" The priority of the Chinese invention patent application of , the entire content of the above application is incorporated herein by reference. technical field [0002] The invention relates to a composite zirconia microsphere and a preparation method thereof, and relates to the technical field of zirconia composite ceramic wear-resistant medium materials. Background technique [0003] Compared with traditional ball milling media, zirconia ceramic balls are widely used in building sanitary ceramics, industrial ceramics, electronic ceramics, high-grade refractory materials, special cement, non- Grinding and processing of metal minerals and raw materials in coatings, paints and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 罗忠义王恩远
Owner YAAN YUANCHUANG CERAMIC
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