Ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze and its preparation method and application

Abstract

The present invention belongs to the technical field of ceramic glazes, and particularly relates to an ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze, a preparation method thereof, and an application thereof. The ceramic glaze is made of quartz powder, potassium feldspar, kaolin, wollastonite, alumina, lanthanum oxide, molybdenum trioxide, cerium dioxide, zirconium dioxide, and yttrium trioxide. The ceramic glaze of the present invention has a wide glaze firing range and can be fired at a high temperature of 1450°C to 1600°C. It has a high service temperature and can be used below 1250°C. By introducing components such as lanthanum oxide, molybdenum trioxide, cerium dioxide, zirconium dioxide, and yttrium trioxide, the microstructure of the ceramic glaze layer is effectively improved, the hardness of the ceramic glaze layer is enhanced, the wear resistance and corrosion resistance of the glaze layer are improved, the firing range of the glaze is broadened, and the friction coefficient of the glaze layer is reduced, and the frictional resistance of the ceramic is reduced. It meets the high-performance requirements of wear resistance and corrosion resistance of ceramic products such as engineering ceramics and bioceramics.

Description

Technical Field

[0001] The present invention belongs to the technical field of ceramic glazes, and particularly relates to an ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze, a preparation method thereof, and an application thereof. Background Art

[0002] A ceramic glaze layer refers to an amorphous vitreous substance formed on the surface of a ceramic body after a ceramic glaze is applied to the ceramic body and melted at a high temperature. It endows ceramic products with specific usage functions and aesthetic senses, and plays roles in waterproofing, easy cleaning, and protecting the ceramic products.

[0003] Currently, ceramic glazes with a firing temperature between 1250°C and 1380°C are generally called high-temperature glazes, which are usually prepared from quartz, feldspar, kaolin, calcium carbonate, alumina, zinc oxide, etc. Their softening points are all below 1100°C, and the usage temperature cannot be higher than 1100°C. Moreover, the glaze surface has low hardness, poor wear resistance and corrosion resistance. Therefore, the existing ceramic glaze formula compositions are difficult to meet the performance requirements of ceramic products with higher requirements such as engineering ceramics and bioceramics. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, and provide an ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze, a preparation method thereof, and an application thereof. The glaze layer formed by the prepared ceramic glaze has high hardness, good wear resistance and corrosion resistance, and the friction coefficient of the glaze layer is small, and it can be used at a temperature not higher than 1250°C. It meets the high-performance requirements of wear resistance and corrosion resistance of ceramic products such as engineering ceramics and bioceramics.

[0005] The ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze described in the present invention is made of the following raw materials in mass percentages, and the sum of the mass percentages of all raw materials is 100%: 35.0 - 60.0% of quartz powder, 5.0 - 20.0% of potassium feldspar, 3.0 - 15.0% of kaolin, 5.0 - 20.0% of wollastonite, 0.1 - 3.0% of lanthanum oxide, 0.1 - 10.0% of molybdenum trioxide, 0.1 - 2.0% of cerium dioxide, 5.0 - 15.0% of alumina, 0.1 - 10.0% of zirconium dioxide, 0.1 - 3.0% of yttrium oxide.

[0006] Preferably, the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze is made of the following raw materials in mass percentages, and the sum of the mass percentages of all raw materials is 100%: 40.0 - 55.0% of quartz powder, 6.0 - 15.0% of potassium feldspar, 6.0 - 12.0% of kaolin, 6.0 - 15.0% of wollastonite, 6.0 - 12.0% of alumina, 1.0 - 2.0% of lanthanum oxide, 2.0 - 6.0% of molybdenum trioxide, 0.5 - 1.5% of cerium dioxide, 3.0 - 8.0% of zirconium dioxide, 1.0 - 2.0% of yttrium oxide.

[0007] Among them, the sum of the mass percentages of lanthanum oxide, cerium dioxide, zirconium dioxide and yttrium sesquioxide is greater than 3.0% and less than 12.0%.

[0008] The preparation method of the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze described in the present invention includes the following steps:

[0009] (1) First, accurately weigh the raw materials of quartz powder, potassium feldspar, kaolin, wollastonite and alumina according to the formula ratio of the ceramic glaze, add them to a ball mill with a high-aluminum inner lining and high-aluminum balls or zirconia balls, and add 45-55% of the weight of the mixture of water for grinding for 20-30 hours;

[0010] (2) Then add the raw materials of lanthanum oxide, molybdenum trioxide, cerium dioxide, zirconium dioxide and yttrium sesquioxide in the ratio, add the corresponding water according to the mass ratio of 1:1, and then ball mill for 5-10 hours. The particle size of the glaze is controlled to be less than 0.05% of the residue on a 325-mesh sieve. After grinding, remove iron and sieve to obtain the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze.

[0011] For the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze prepared by the present invention, according to different glazing methods, adjust the appropriate glaze slurry specific gravity and flow rate. The glazing thickness is controlled between 10-50 μm. After drying, it is fired at a temperature of 1450°C to 1600°C and held for 1-3 hours.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] As is well known, the performance of the ceramic glaze mainly depends on the chemical composition, mineral composition and microstructure of the glaze. By adjusting the raw material ratio, optimizing the chemical composition and mineral composition of the glaze, and reasonably adding components such as zirconium dioxide, yttrium sesquioxide, cerium dioxide, lanthanum oxide, molybdenum trioxide, etc., the present invention improves the microstructure of the glaze layer, makes the glaze layer more dense, the glaze surface smooth, the hardness increased, the wear resistance and corrosion resistance are both improved, and the friction coefficient of the glaze layer is greatly reduced, reducing the friction resistance of the ceramic, and broadening the firing range of the glaze. The ceramic products using this glaze have a high use temperature and can be applied at temperatures below 1250°C. It meets the high-performance requirements of wear resistance and corrosion resistance of ceramic products such as engineering ceramics and bioceramics. Specific Embodiments

[0014] The following further illustrates the present invention in conjunction with embodiments.

[0015] In the embodiments, the materials are all in mass percentages.

[0016] Example 1

[0017] According to the raw material ratio, 46% quartz powder, 12% potassium feldspar, 8% kaolin, 15% wollastonite, and 8% alumina. Weigh each material and add them to a ball mill with a high-aluminum inner lining and high-aluminum balls. Add 50% of the water by the mass of the above mixture and ball mill for 24 hours. Then add 1% lanthanum oxide, 2% molybdenum trioxide, 1% cerium dioxide, 5% zirconium dioxide, and 2% yttrium trioxide. Add the corresponding water in a ratio of 1:1 by the weight of the above raw materials and ball mill for another 8 hours. The particle size of the glaze is controlled to have a sieve residue less than 0.05% on a 325-mesh sieve. Remove iron and sieve after grinding. Apply the glaze to a 90 alumina ceramic body by spraying method, with a glaze application thickness of 25 μm, and fire at 1480 ± 10 °C for 2 hours.

[0018] Example 2

[0019] According to the raw material ratio, 52% quartz powder, 8% potassium feldspar, 7% kaolin, 7% wollastonite, and 12% alumina. Weigh each material and add them to a ball mill with a high-aluminum inner lining and zirconia balls. Add 52% of the water by the weight of the above mixture and ball mill for 22 hours. Then add 2% lanthanum oxide, 3% molybdenum trioxide, 2% cerium dioxide, 6% zirconium dioxide, and 1% yttrium trioxide. Add the corresponding water in a ratio of 1:1 by the weight of the above raw materials and ball mill for 6 hours. The particle size of the glaze is controlled to have a sieve residue less than 0.05% on a 325-mesh sieve. Remove iron and sieve after grinding. Apply the glaze to a 95 alumina ceramic body by spraying method, with a glaze application thickness of about 15 μm, and fire at 1560 ± 10 °C for 1 hour.

[0020] Example 3

[0021] According to the raw material ratio, 40% quartz powder, 15% potassium feldspar, 11% kaolin, 10% wollastonite, and 6% alumina. Weigh each material and add them to a ball mill with a high-aluminum inner lining and zirconia balls. Add 45% of the water by the weight of the above mixture and ball mill for 26 hours. Then add 1% lanthanum oxide, 6% molybdenum trioxide, 1% cerium dioxide, 8% zirconium dioxide, and 2% yttrium trioxide. Add the corresponding water in a ratio of 1:1 by the weight of the above raw materials and ball mill for 6 hours. The particle size of the glaze is controlled to have a sieve residue less than 0.05% on a 325-mesh sieve. Remove iron and sieve after grinding. Apply the glaze to a 90 alumina ceramic body by spraying method, with a glaze application thickness of about 35 μm, and fire at 1500 ± 10 °C for 3 hours.

[0022] Example 4

[0023] According to the raw material ratio, quartz powder is 55%, potassium feldspar is 7%, kaolin is 10%, wollastonite is 7%, and alumina is 10%. Weigh each material and add them into a ball mill with a high-aluminum inner lining and zirconia balls. Add water accounting for 55% of the weight of the above mixture and ball mill for 30 hours. Then add 1% lanthanum oxide, 5% molybdenum trioxide, 1% cerium dioxide, 3% zirconium dioxide, and 1% yttrium trioxide. Add corresponding water according to the ratio of 1:1 of the weight of the above raw materials and ball mill for another 10 hours. Control the particle size of the glaze to be less than 0.05% of the residue on a 325-mesh sieve. Remove iron and sieve after grinding. Apply the glaze on the 99 alumina ceramic body by spraying method, with the glaze thickness about 45μm, and fire at 1560±10°C for 3 hours.

[0024] According to the existing detection standards, compare the performance of the glaze layers of Examples 1-4 with that of the existing ordinary glaze layer. The comparison results are shown in Table 1.

[0025] Table 1 Comparison results of the performance of the glaze layers of Examples 1-4 and the existing ordinary glaze layer

[0026]

[0027] As can be seen from Table 1 above, the glaze layer formed by the ceramic glaze of the present invention has high hardness, good wear resistance and corrosion resistance, and the friction coefficient of the glaze layer is small. The use temperature is increased, and it can be used at a temperature not higher than 1250°C. It meets the high-performance requirements of wear resistance and corrosion resistance of ceramic products such as engineering ceramics and bioceramics.

[0028] Of course, the above content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples. Equivalent changes and improvements made by those of ordinary skill in the art within the essence of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. A super-high temperature wear-resistant and corrosion-resistant ceramic glaze, characterized in that: It is made from raw materials with the following mass percentages, and the sum of the mass percentages of all raw materials is 100%: quartz powder 35.0 - 60.0%, potassium feldspar 5.0 - 20.0%, kaolin 3.0 - 15.0%, wollastonite 5.0 - 20.0%, lanthanum oxide 0.1 - 3.0%, molybdenum trioxide 0.1 - 10.0%, cerium dioxide 0.1 - 2.0%, alumina 5.0 - 15.0%, zirconium dioxide 0.1 - 10.0%, yttrium trioxide 0.1 - 3.0%. The sum of the mass percentages of lanthanum oxide, cerium dioxide, zirconium dioxide and yttrium trioxide is greater than 3.0% and less than 12.0%.

2. The ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze according to claim 1, wherein: It is made from raw materials with the following mass percentages, and the sum of the mass percentages of all raw materials is 100%: quartz powder 40.0 - 55.0%, potassium feldspar 6.0 - 15.0%, kaolin 6.0 - 12.0%, wollastonite 6.0 - 15.0%, alumina 6.0 - 12.0%, lanthanum oxide 1.0 - 2.0%, molybdenum trioxide 2.0 - 6.0%, cerium dioxide 0.5 - 1.5%, zirconium dioxide 3.0 - 8.0%, yttrium trioxide 1.0 - 2.0%.

3. The preparation method of the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze according to any one of claims 1-2, characterized in that: It includes the following steps: (1) First, add quartz powder, potassium feldspar, kaolin, wollastonite and alumina into a ball mill, and ball mill with water. (2) Then add lanthanum oxide, molybdenum trioxide, cerium dioxide, zirconium dioxide and yttrium trioxide, and continue to ball mill with water until the particle size of the glaze is controlled to be less than 0.05% of the residue on a 325 - mesh sieve. After removing iron and sieving out of the mill, an ultra - high - temperature wear - resistant and corrosion - resistant ceramic glaze is prepared.

4. The preparation method of the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze according to claim 3, characterized in that: In step (1), the water - ball - milling time is 20 - 30 hours.

5. The preparation method of the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze according to claim 3, characterized in that: In step (1), the water addition amount for water - ball - milling is 45 - 55% of the total mass of the mixture of quartz powder, potassium feldspar, kaolin, wollastonite and alumina.

6. The preparation method of the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze according to claim 3, characterized in that: In step (2), the time for continuing to ball mill with water is 5 - 10 hours.

7. The preparation method of the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze according to claim 3, characterized in that: In step (2), the mass ratio of the water addition amount for continuing to ball mill with water to the total mass of the materials of quartz powder, potassium feldspar, kaolin, wollastonite, alumina, lanthanum oxide, molybdenum trioxide, cerium dioxide, zirconium dioxide and yttrium trioxide is 1:

1.

8. Use of the ultra-high temperature wear-resistant and corrosion-resistant ceramic glaze according to any one of claims 1-2, characterized in that: When glazing, the glazing thickness is controlled between 10 - 50 μm. After drying, it is fired at a temperature of 1450°C to 1600°C and held for 1 - 3 hours.

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