Preparation method of white zirconia ceramic

A technology of zirconia ceramics and zirconia, which is applied in the field of ceramic materials and its preparation, can solve the problem of poor bonding and adhesion between coatings and zirconia substrates, reducing the strength and fracture toughness of zirconia ceramics, and failing to meet high whiteness and high Shading and other issues, to achieve the effect of improving anti-aging performance, reducing light transmittance, and small particle size

Active Publication Date: 2016-09-21
CHAOZHOU THREE CIRCLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Sputtering or coating printing on the surface of zirconia, on the one hand, increases the processing procedures and workload, on the other hand, the sputtering and printing coatings have uneven thickness, and the bonding force and adhesion between the coating and the zirconia substrate are poor. , especially in special environments such as high temperature and high humidity, it is easy to peel off
However, doping zirconia with magnesium, calcium and other impurities to synthesize porous material

Method used

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  • Preparation method of white zirconia ceramic
  • Preparation method of white zirconia ceramic

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Embodiment 1

[0043] An embodiment of the white zirconia ceramic material composition of the present invention, the white zirconia ceramic material composition in this embodiment contains the following components in mass percentage: 0.01% of aluminum oxide, 20% of magnesium oxide, and 15% of calcium oxide %, strontium oxide 20%, barium oxide 0.01%, yttrium oxide 8%, and the balance is zirconium oxide containing hafnium oxide; in the zirconium oxide containing hafnium oxide, the amount of hafnium oxide in the zirconium oxide containing The mass percentage is 20%.

[0044] The white zirconia ceramic material composition of the present embodiment is a powder, and the D50 particle size of the powder is 3um, and the specific surface area is 5m 2 / g.

Embodiment 2

[0046] An embodiment of the white zirconia ceramic material composition of the present invention, the white zirconia ceramic material composition in this embodiment contains the following components in mass percentage: 5% of aluminum oxide, 15% of magnesium oxide, 1% of calcium oxide %, strontium oxide 10%, barium oxide 20%, yttrium oxide 7%, and the balance is zirconium oxide containing hafnium oxide; in the zirconium oxide containing hafnium oxide, the amount of hafnium oxide in the zirconium oxide containing The mass percentage content is 5%.

[0047] The white zirconia ceramic material composition of the present embodiment is a powder, and the D50 particle size of the powder is 2.5um, and the specific surface area is 8m 2 / g.

Embodiment 3

[0049] An embodiment of the white zirconia ceramic material composition of the present invention, the white zirconia ceramic material composition in this embodiment contains the following components in mass percent: 8% alumina, 6% magnesium oxide, and 8% calcium oxide. %, strontium oxide 3%, barium oxide 5%, yttrium oxide 6%, and the balance is zirconium oxide containing hafnium oxide; in the zirconium oxide containing hafnium oxide, the amount of hafnium oxide in the zirconium oxide containing The mass percentage is 15%.

[0050] The white zirconia ceramic material composition of the present embodiment is a powder, and the D50 particle size of the powder is 2um, and the specific surface area is 12m 2 / g.

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Abstract

The invention discloses a white zirconia ceramic material composition. The composition includes: by weight, aluminium oxide 0.01-35%, magnesium oxide 0-20%, calcium oxide 0-20%, strontium oxide 0-20%, barium oxide 0-20%, yttrium oxide 1.5-8%, and balance zirconium oxide containing hafnium oxide. The white zirconia ceramic material composition has small powder granularity and uniform dispersion, and the white zirconia ceramic containing the composition has high whiteness and light-proofness, and low transmissivity. Moreover, the invention also discloses white zirconia ceramic prepared from the white zirconia ceramic material composition and a preparation method of the white zirconia ceramic.

Description

technical field [0001] The invention relates to a ceramic material and a preparation method thereof, in particular to a zirconia ceramic material and a preparation method thereof. Background technique [0002] Zirconia ceramics have excellent properties such as high strength, high hardness, high elastic modulus, and good chemical stability. Materials and other aspects have broad application prospects. [0003] At present, the preparation of white zirconia ceramics mainly adopts the following two methods: 1. Sputtering or coating printing on the surface of zirconia, such as sputtering a layer of 10-200um alumina or silicon oxide on the zirconia substrate Film, printing 1-5 layers of black or white ink on the zirconia substrate. Through the absorption and reflection of light by the sputtering layer and the printing layer, its whiteness and shading are improved, and its light transmittance is reduced; 2. Doping zirconia with impurities such as magnesium and calcium, making zi...

Claims

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Application Information

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IPC IPC(8): C04B35/488
CPCC04B35/4885C04B2235/3206C04B2235/3208C04B2235/3213C04B2235/3215C04B2235/3217C04B2235/3224C04B2235/3225C04B2235/5436
Inventor 谢烁敏马艳红
Owner CHAOZHOU THREE CIRCLE GRP
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