CN108275996B - Toning composition, zirconia ceramic raw material composition, zirconia ceramic and preparation method thereof - Google Patents

Toning composition, zirconia ceramic raw material composition, zirconia ceramic and preparation method thereof Download PDF

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CN108275996B
CN108275996B CN201810016084.6A CN201810016084A CN108275996B CN 108275996 B CN108275996 B CN 108275996B CN 201810016084 A CN201810016084 A CN 201810016084A CN 108275996 B CN108275996 B CN 108275996B
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oxide
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mixture
zirconia ceramic
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CN108275996A (en
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邱基华
李喜宏
白姣姣
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Chaozhou Three Circle Group Co Ltd
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Abstract

The invention relates to a toning composition, a zirconia ceramic raw material composition, zirconia ceramic and a preparation method thereof. A toning composition for adjusting the color of zirconia ceramics is characterized by comprising a first component, a second component and a third component; the first component is copper oxide, and the second component is at least one of aluminum oxide, thulium oxide and neodymium oxide; the third component is at least one selected from cerium oxide, zinc oxide, calcium oxide, cobalt oxide, magnesium oxide, strontium oxide, titanium oxide and praseodymium oxide, wherein the mass ratio of the first component to the second component to the third component is 0.001-5: 0.001-20: 0.001 to 20. The toning composition can be applied to zirconia ceramics to obtain the bronze zirconia ceramics.

Description

Toning composition, zirconia ceramic raw material composition, zirconia ceramic and preparation method thereof
Technical Field
The invention relates to a toning composition, a zirconia ceramic raw material composition, zirconia ceramic and a preparation method thereof.
Background
China has a history of thousands of years for manufacturing ceramics, in the formula of raw materials of ceramics, the bracket theory of taking silicate and alumina as ceramics is applied for thousands of years, and China jade porcelain creates the immortal mythism, legend and brilliance in the field of ceramics by virtue of luscious color and exquisite porcelain quality.
The Chinese jade porcelain has mild color and luster, fine porcelain quality, lower whiteness and unsatisfactory light transmission; the bone ash porcelain has high whiteness and good light transmission, but has relatively hard color and relatively rough porcelain quality. The porcelain integrating the luscious color and luster, exquisite porcelain quality and high whiteness and high light transmittance of the western bone ash porcelain is manufactured and is a pursuit target of the ceramic industry.
Jade-like ceramics are favored because of the color close to jade, and the color of the existing jade porcelain is black, so that the user feels worse.
Disclosure of Invention
Accordingly, there is a need for a toning composition that can be applied to zirconia ceramics to obtain a turquoise zirconia ceramic, a zirconia ceramic raw material composition, a zirconia ceramic, and a method for producing the same.
A toning composition for adjusting the color of zirconia ceramics is characterized by comprising a first component, a second component and a third component; the first component is copper oxide, and the second component is at least one of aluminum oxide, thulium oxide and neodymium oxide; the third component is at least one selected from cerium oxide, zinc oxide, calcium oxide, cobalt oxide, magnesium oxide, strontium oxide, titanium oxide and praseodymium oxide, wherein the mass ratio of the first component to the second component to the third component is 0.001-5: 0.001-20: 0.001 to 20.
The color-mixing composition can obtain the zirconia ceramics with black and jade color through compounding the first component, the second component and the third component, and the obtained zirconia ceramics are converted into the polished zirconia ceramics with the equivalent thickness of 0.5mm and the CIE Lab color chromaticity index of L more than or equal to 60, -25 more than or equal to a more than or equal to-0.1, -18 more than or equal to b less than or equal to 15 under the wavelength of 550nm through experimental determination, the transmittance is less than 45 percent, and the color and luster of the zirconia ceramics are better.
A zirconia ceramic raw material composition comprises a zirconia ceramic main body material and a toning composition, wherein the toning composition comprises a first component, a second component and a third component; the zirconia ceramic raw material composition comprises 0.001-5% by mass of a first component, wherein the first component is copper oxide; the mass percentage of the second component in the zirconia ceramic raw material composition is 0.001% -20%, and the second component is at least one of aluminum oxide, thulium oxide and neodymium oxide; the zirconia ceramic raw material composition comprises 0.001-20% by mass of a third component, wherein the third component is at least one selected from cerium oxide, zinc oxide, calcium oxide, cobalt oxide, magnesium oxide, strontium oxide, titanium oxide and praseodymium oxide.
In one embodiment, the mass percentage of the first component in the zirconia ceramic raw material composition is 0.005% -1%; and/or
The mass percentage of the second component in the zirconia ceramic raw material composition is 0.1-15%; and/or
The third component in the zirconia ceramic raw material composition is 0.01-15% by mass.
In one embodiment, the zirconia ceramic host material comprises zirconia and hafnia.
In one embodiment, the zirconia ceramic main body material comprises zirconia and yttria, and the mass percentage of the yttria in the zirconia ceramic raw material composition is 2.5% -7.85%.
In one embodiment, the mass percentage of the yttrium oxide in the raw material composition of the zirconia ceramic is 3% to 6.3%.
In one embodiment, the zirconia ceramic raw material composition has D50 of 0.05-1.50 μm and a specific surface area of 6m2/g～25m2Powder per gram.
The zirconia ceramics is prepared from the zirconia ceramics raw material composition.
In one embodiment, the zirconia ceramic has an equivalent thickness of 0.5mm after polishing, a transmittance of less than 45% at a wavelength of 550nm, and colorimetric values L of 60 or more, 25 or less, a or less to-0.1, 18 or less, b or less to 15.
The preparation method of the zirconia ceramic comprises the steps of forming and sintering the zirconia ceramic raw material composition to obtain the zirconia ceramic.
Detailed Description
The color-imparting composition, the zirconia ceramic raw material composition, the zirconia ceramic, and the method for producing the same will be described in further detail below with reference to specific embodiments.
A zirconia ceramic raw material composition according to an embodiment includes a zirconia ceramic base material and a toning composition.
The main body material of the zirconia ceramic is mainly zirconia. Of course, it is also possible to mix some other components in the zirconia in order to improve the properties of the zirconia ceramic host material.
In some embodiments, the zirconia ceramic host material further comprises hafnium oxide.
In some embodiments, the zirconia ceramic host material further comprises yttria. The mass percentage of the yttrium oxide in the zirconia ceramic raw material composition is 2.5-7.85%, preferably 3-6.3%. The addition of yttrium oxide can improve the strength of the zirconia ceramic.
Of course, in order to further improve the performance of the zirconia ceramic, other modified components may be added, which is not described herein.
The tinting composition includes a first component, a second component, and a third component. The color-mixing composition can adjust the color tone of the zirconia ceramics and presents a jade color. The mass ratio of the first component to the second component to the third component is 0.001-5: 0.001-20: 0.001 to 20.
The first component is copper oxide. Copper oxide can provide a bluish-jade main tone. The mass percentage of the first component in the zirconia ceramic raw material composition is 0.001-5%, and more preferably 0.005-1%.
The second component is at least one selected from the group consisting of aluminum oxide, thulium oxide and neodymium oxide. Alumina provides a bluish-jade main tone. The thulium oxide and the neodymium oxide can adjust the color tone, specifically, the a value and the b value of the color tone. The mass percentage of the second component in the zirconia ceramic raw material composition is 0.001-20%, and the preferable mass percentage is 0.1-15%.
The third component is at least one selected from cerium oxide, zinc oxide, calcium oxide, cobalt oxide, magnesium oxide, strontium oxide, titanium oxide and praseodymium oxide. The zinc oxide and the magnesium oxide can adjust the brightness of the zirconia ceramics, in particular, adjust the L value of the color tone. The color tone, specifically, the a value and the b value of the color tone can be adjusted by cerium oxide, calcium oxide, cobalt oxide, strontium oxide, titanium oxide, and praseodymium oxide. The third component in the zirconia ceramic raw material composition is 0.001-20% by mass, preferably 0.01-15% by mass.
In one embodiment, the zirconia ceramic raw material composition has D50 of 0.05-1.50 μm and a specific surface area of 6m2/g～25m2Powder per gram.
In the zirconia ceramic raw material composition, the total mass percentage of all the components is adjusted to 100% by adjusting the content of zirconia.
In some embodiments, the zirconia ceramic feedstock composition does not contain iron oxide. The zirconia ceramic raw material composition can avoid iron oxide from bringing other tones, and ensure that the prepared zirconia ceramic is jade-like.
In some embodiments, the zirconia ceramic feedstock composition does not contain cobalt oxide. The zirconia ceramic raw material composition can avoid cobalt oxide from bringing other tones, and ensure that the prepared zirconia ceramic is jade-like.
In some embodiments, the zirconia ceramic feedstock composition does not contain silica. The silicon oxide can reduce the strength of the zirconia ceramic, and the zirconia ceramic prepared by the zirconia ceramic raw material composition without the silicon oxide has higher four-point bending strength.
In the zirconia ceramic raw material composition, the zirconia ceramic which does not turn black and has a turquoise color can be obtained by compounding the first component, the second component and the third component, and the obtained zirconia ceramic is converted into the polished zirconia ceramic with an equivalent thickness of 0.5mm and a CIE Lab color index L of more than or equal to 60, more than or equal to-25, more than or equal to-0.1, more than or equal to-18, less than or equal to 15 under the wavelength of 550nm through experimental determination, the transmittance is less than 45 percent, and the color and luster of the zirconia ceramic are better; the zirconia ceramic prepared by the zirconia ceramic composition has better strength.
The zirconia ceramic of an embodiment is prepared from the zirconia ceramic raw material composition.
In one embodiment, the zirconia ceramic has an equivalent thickness of 0.5mm after polishing, a transmittance at a wavelength of 550nm of < 45%, and colorimetric values L of 60 or more, 25 or less, a or less, 0.1 or more, 18 or less, b or less, 15 or less.
The zirconia ceramic is black-free and jade-colored zirconia ceramic, and the obtained zirconia ceramic is converted into the polished zirconia ceramic with the equivalent thickness of 0.5mm and the CIE Lab color chromaticity index of more than or equal to 60 under the wavelength of 550nm, more than or equal to 25, -more than or equal to a and less than or equal to-0.1, -more than or equal to 18 and less than or equal to 15, the transmittance is less than 45 percent, and the color and luster of the zirconia ceramic are better; the zirconia ceramics have better strength.
The preparation method of the zirconia ceramic comprises the following steps:
step S110, providing a zirconia ceramic raw material composition.
In one embodiment, the zirconia ceramic starting material composition is obtained by grinding and thoroughly mixing the respective starting materials of the zirconia ceramic base material and the toning composition. Further, the grinding can be sand grinding or ball milling. Further, the ball milling is wet ball milling or dry ball milling.
In one embodiment, the tinting composition is obtained by mixing the salt solution corresponding to each raw material with an alkaline solution to perform a precipitation reaction, obtain a precipitate, and calcining the precipitate. And grinding and fully mixing the ceramic zirconia ceramic main body material and the toning composition to obtain the zirconia ceramic raw material composition. Further, the alkali solution is a sodium hydroxide solution. The salt solution is at least one of a chloride solution or a nitrate solution, and the corresponding meaning here is that the salt solution corresponding to copper oxide is a copper chloride solution or a copper nitrate solution. Further, the grinding can be sand grinding or ball milling. The further ball milling is wet ball milling or dry ball milling.
And step S120, forming and sintering the zirconia ceramic raw material composition to obtain the zirconia ceramic.
In one embodiment, the zirconia ceramic raw material composition is granulated to obtain ceramic powder, is subjected to cold isostatic pressing, and is sintered to obtain zirconia ceramic. Further, the pressure of cold isostatic pressing is 100 MPa. Further, the sintering process parameters are as follows: heating to 1360 ℃ at the heating rate of 2 ℃/min, and preserving heat for 1.5h for sintering.
In one embodiment, the zirconia ceramic raw material composition is mixed with polypropylene resin, stearic acid and paraffin to obtain a premix, the premix is mixed and then is subjected to injection molding to obtain a biscuit, and then the biscuit is subjected to binder removal and sintering to obtain the zirconia ceramic. Preferably, in the premix, the mass percent of the polypropylene resin is 6%, the mass percent of the stearic acid is 1.5%, the paraffin is ordinary paraffin, and the mass percent of the paraffin is 7%. Preferably, the mixing process parameters are as follows: kneading at 170 ℃ for 3 hours. Preferably, the technological parameters of the rubber discharge are as follows: heating to 200 ℃ at a heating rate of 0.1 ℃/min, heating to 400 ℃ at a heating rate of 0.4 ℃/min, and keeping the temperature at 400 ℃ for 2 hours to remove the glue. Preferably, the sintering process parameters are as follows: raising the temperature to 1360 ℃ at the speed of 2 ℃/min and preserving the heat for 1.5 hours.
In one embodiment, the zirconia ceramic raw material composition is mixed with a PVB solution and a solvent, fully mixed and dispersed by sand grinding or ball milling to obtain a ceramic slurry, and the ceramic slurry is subjected to tape casting, binder removal and sintering to obtain the zirconia ceramic. Preferably, the mass ratio of the PVB in the PVB solution to the zirconia ceramic raw material composition is 6: 100. preferably, the solvent is toluene isopropanol. Preferably, the technological parameters of the rubber discharge are as follows: heating to 280 ℃ at the heating rate of 0.3 ℃/min, and preserving the heat for 2 hours to remove the glue. Preferably, the sintering process parameters are as follows: raising the temperature to 1450 ℃ at the speed of 2 ℃/min, and preserving the temperature for 1.5 hours.
The above embodiments are merely exemplary to illustrate several methods for preparing zirconia ceramics, and it should be noted that zirconia ceramics are not limited to the above preparation methods, and may be prepared by other preparation methods in the industry, as long as the raw materials are controlled to be zirconia ceramic raw material compositions, so that zirconia ceramics with a bluish jade color can be obtained without blackening.
The preparation method of the zirconia ceramic is simple to operate, and the prepared zirconia ceramic is not blackened and has a jade color.
The following are specific examples.
The contents in the following examples are all mass percentages, and parts are mass fractions. In the following examples, unless otherwise specified, other unspecified components except for inevitable impurities are not included.
Example 1
98.999 parts of zirconia ceramic main body material (containing 2.5% of Y)2O3A specific surface area of 18m2Per g), 0.001 part of CuO and 0.34 part of Al are added2O30.01 part of CoO, 0.12 part of CeO2 and 0.43 part of MgO, and the mixture is subjected to ball milling, fully mixed and dispersed, and then the zirconia ceramic raw material composition is dried and granulated to obtain master batch. Pressing into a flat plate by using a cold isostatic pressing under 100MPa, raising the temperature to 1360 ℃ at the heating rate of 2 ℃/min, and preserving the temperature for 1.5h to obtain the zirconia ceramic.
Example 2
92.95 parts of zirconia ceramic as a main body material (containing 7.85 mass% of Y)2O3A specific surface area of 12m2Per g), 5.0 parts of CuO and 0.48 part of Al are added2O30.96 parts of Nd2O3And 0.66 part of CaO by wet ball milling and dispersion, and drying to obtain the zirconia ceramic raw material composition. The zirconia ceramic raw material composition, polypropylene resin, stearic acid and normal paraffin are mixed for 3 hours at 170 ℃ to obtain a premix, wherein the content of the polypropylene resin in the premix is 6%, the content of the stearic acid is 1.5%, and the content of the normal paraffin is 7%. The premix is injection molded. Raising the temperature to 200 ℃ at the heating rate of 0.1 ℃/min, raising the temperature from 200 ℃ to 400 ℃ at the speed of 0.4 ℃/min, preserving the heat at 400 ℃ for 2 hours to remove the glue, and then raising the temperature to 1360 ℃ at the speed of 2 ℃/min to preserve the heat for 1.5 hours to obtain the zirconia ceramic.
Example 3
To Cu (NO)3)2、Al(NO3)3、Nd(NO3)3、Sr(NO3)2、CeCl3The mixed solution was stirred while dropping a NaOH solution of 18% by mass to obtain a precipitate mixture containing 0.94% of Cu (NO)3)24% of Al (NO)3)32.36% of Nd (NO)3)33.4% of Sr (NO)3)20.43% of CeCl3The pH of the solution was adjusted to 12, and the precipitate mixture was washed, dried and calcined at 900 ℃ for 1.5 hours to obtain a toning composition. 98.305 parts of zirconia ceramic main body material (containing 3.0 mass percent of Y)2O3A specific surface area of 12m2And/g) adding 1.89 parts of toning composition, fully mixing and dispersing by using a sand mill to obtain a zirconia ceramic raw material composition, and drying and granulating to obtain master batches. Pressing into a flat plate by using a cold isostatic pressing under 100MPa, then raising the temperature to 1450 ℃ at the heating rate of 2 ℃/min, and preserving the temperature for 1.5h to obtain the zirconia ceramic.
Example 4
To the solution containing 2.82% Cu (NO)3)2、4％Al(NO3)3、2.36％Nd(NO3)3、3.4％Mg(NO3)2、0.43％CeCl3The mixed solution was stirred while dropping an excess NaOH solution of 18% by mass of a NaOH solution containing 2.82% of Cu (N) to obtain a precipitate mixtureO3)24% of Al (NO)3)32.36% of Nd (NO)3)33.4% Mg (NO)3)20.43% of CeCl3The pH of the solution was adjusted to 12, and the precipitate mixture was washed, dried and calcined at 900 ℃ for 1.5 hours to obtain a toning composition. 97.77 parts of zirconia ceramic main body material (containing 3.42 mass percent of Y)2O3A specific surface area of 12m2Adding 2.23 parts of toning composition, performing wet ball milling dispersion, and drying to obtain a zirconia ceramic raw material composition, adding a pre-dissolved PVB solution (the mass ratio of PVB to powder is 6: 100) and toluene isopropanol (the mass ratio of the toluene isopropanol to the powder is 3:2), fully mixing and dispersing by ball milling to obtain ceramic slurry containing the zirconia ceramic raw material composition, performing tape casting, raising the temperature to 280 ℃ at the heating rate of 0.3 ℃/min, preserving the heat for 2 hours to remove glue, raising the temperature to 1450 ℃ at the heating rate of 2 ℃/min, and preserving the heat for 1.5 hours to obtain the zirconia ceramic.
Example 5
97.77 parts of zirconia ceramic main body material (containing 3.42 mass percent of Y)2O3Specific surface area of 7m2/g), 0.6 part of CuO and 0.48 part of Al are added2O30.6 part of Nd2O30.46 part of MgO and 0.21 part of TiO2And fully mixing and dispersing by using sand grinding or ball milling, drying the zirconia ceramic raw material composition, and granulating to obtain the master batch. Pressing into a flat plate by using a cold isostatic pressing under 100MPa, raising the temperature to 1480 ℃ at the heating rate of 2 ℃/min, and preserving the temperature for 2h to obtain the zirconia ceramic.
Example 6
To the solution containing 2.82% Cu (NO)3)2、4％Al(NO3)3、2.36％Nd(NO3)3、3.4％Mg(NO3)2、0.43％Tm2O3The mixed solution was stirred while dropping an excess NaOH solution of 18% by mass of NaOH containing 2.82% of Cu (NO) to obtain a precipitate mixture3)24% of Al (NO)3)32.36% of Nd (NO)3)33.4% Mg (NO)3)2Tm of 0.43%2O3The pH of the solution was adjusted to 12, and the precipitate mixture was washed, dried and calcined at 900 ℃ for 1.5 hours to obtain a toning composition. 97.77 parts of zirconia ceramic main body material (containing 3.42 mass percent of Y)2O3A specific surface area of 12m2Adding 2.23 parts of toning composition, performing wet ball milling dispersion, and drying to obtain a zirconia ceramic raw material composition, adding a pre-dissolved PVB solution (the mass ratio of PVB to powder is 6: 100) and toluene isopropanol (the mass ratio of the toluene isopropanol to the powder is 3:2), fully mixing and dispersing by ball milling to obtain ceramic slurry containing the zirconia ceramic raw material composition, performing tape casting, raising the temperature to 280 ℃ at the heating rate of 0.3 ℃/min, preserving the heat for 2 hours to remove glue, raising the temperature to 1450 ℃ at the heating rate of 2 ℃/min, and preserving the heat for 1.5 hours to obtain the zirconia ceramic.
Example 7
97.17 parts of zirconia ceramic main body material (containing 6.17% by mass of Y)2O3Specific surface area of 9m2/g), 0.8 part of CuO and 1.3 parts of Al are added2O30.63 part of ZnO and 0.1 part of Pr2O3And ball milling and dispersing by a wet method, and drying to obtain the zirconia ceramic raw material composition. The zirconia ceramic raw material composition, polypropylene resin, stearic acid and normal paraffin are mixed for 3 hours at 170 ℃ to obtain a premix, wherein the content of the polypropylene resin in the premix is 6%, the content of the stearic acid is 1.5%, and the content of the normal paraffin is 7%. The premix is injection molded. Raising the temperature to 200 ℃ at the heating rate of 0.1 ℃/min, raising the temperature from 200 ℃ to 400 ℃ at the speed of 0.4 ℃/min, preserving the heat of 400 ℃ for 2 hours, discharging the glue, and then raising the temperature to 1480 ℃ at the speed of 2 ℃/min, preserving the heat for 2 hours, thus obtaining the zirconia ceramic.
Example 8
97.33 parts of zirconia ceramic main body material (containing 5.23% by mass of Y)2O3Specific surface area of 7m2Per g), 1 part of CuO and 0.94 part of Al are added2O30.63 part of CaO and 0.1 part of Pr2O3And fully mixing and dispersing by using sand grinding or ball milling, drying the zirconia ceramic raw material composition, and granulating to obtain the master batch. Pressing into a flat plate by using a cold isostatic pressing under 100MPa, raising the temperature to 1480 ℃ at the heating rate of 2 ℃/min, and preserving the temperature for 2h to obtain the zirconia ceramic.
Comparative example
96.6 parts of zirconia ceramic main body material (containing 4.5 mass percent of Y)2O3A specific surface area of 12m2Per g), 0.2 part of SiO is added20.3 part of Fe2O30.2 part of Al2O31 part of CoO, 0.7 part of CeO and 0.1 part of Pr2O3And fully mixing and dispersing by using sand grinding or ball milling, drying the zirconia ceramic raw material composition, and granulating to obtain the master batch. Pressing into a flat plate by using a cold isostatic pressing under 100MPa, raising the temperature to 1480 ℃ at the heating rate of 2 ℃/min, and preserving the temperature for 2h to obtain the zirconia ceramic.
The compositions of the zirconia ceramics prepared in examples 1 to 8 were tested, the compositions were tested by XRF, and the results are shown in table 1, expressed in mass% based on oxides. The 0.5mm zirconia ceramic sheets prepared in examples 1 to 9 were polished and put into a spectrophotometer to measure visible light transmittance in the 550nm range, and the CIE (commission internationale de L' eclairage) colorimetric values of L, a, b were obtained by a colorimeter using a D65 light source, and the results are shown in table 2. The relative density was measured by a drainage density tester, the four-point bending strength was measured by a universal material tensile machine, the aging properties were measured by a constant temperature and humidity chamber and XRD, and the hardness was measured by a Vickers hardness tester, the results are shown in Table 2.
TABLE 1
Figure BDA0001541984960000091
TABLE 2
Figure BDA0001541984960000101
As can be seen from Table 2, compared with the comparative example, the zirconia ceramics prepared in examples 1 to 8 have the color closer to jade, do not turn black, have the four-point bending strength obviously improved greatly compared with the comparative example, and have the hardness higher than the comparative example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A toning composition for adjusting the color of zirconia ceramics is characterized by comprising a first component, a second component and a third component; the first component is copper oxide, and the second component is at least one of aluminum oxide, thulium oxide and neodymium oxide; the third component is at least one selected from cerium oxide, zinc oxide, calcium oxide, cobalt oxide, magnesium oxide, strontium oxide, titanium oxide and praseodymium oxide, wherein the mass ratio of the first component to the second component to the third component is 0.005-1: 0.1-15: 0.01-15, the toning composition can obtain non-blackened sapphire-colored zirconia ceramics, the zirconia ceramics are converted into polished zirconia ceramics with the equivalent thickness of 0.5mm and the transmittance under the wavelength of 550nm of less than 45 percent, the chroma value L is more than or equal to 60, more than or equal to 25, less than or equal to a, more than or equal to-0.1, and more than or equal to 18, less than or equal to b, and less than or equal to 15;
the second component is aluminum oxide, and the third component is a mixture of magnesium oxide, cobalt oxide and cerium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is calcium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is a mixture of strontium oxide and cerium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is a mixture of magnesium oxide and cerium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is a mixture of magnesium oxide and titanium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide, neodymium oxide and thulium oxide, and the third component is magnesium oxide; alternatively, the first and second electrodes may be,
the second component is aluminum oxide, and the third component is a mixture of zinc oxide and praseodymium oxide; alternatively, the first and second electrodes may be,
the second component is alumina, and the third component is a mixture of calcium oxide and praseodymium oxide.
2. The shading composition according to claim 1,
the first component is 0.001 part by mass of copper oxide, the second component is 0.34 part by mass of aluminum oxide, and the third component is a mixture of 0.43 part by mass, 0.01 part by mass and 0.22 part by mass of magnesium oxide, cobalt oxide and cerium oxide;
or the first component is copper oxide with the mass part of 5, the second component is a mixture of aluminum oxide and neodymium oxide with the mass parts of 0.48 and 0.91 respectively, and the third component is calcium oxide with the mass part of 0.66;
or the first component is copper oxide with the mass part of 0.005, the second component is a mixture of aluminum oxide and neodymium oxide with the mass parts of 0.48 and 0.6 respectively, and the third component is a mixture of strontium oxide and cerium oxide with the mass parts of 0.46 and 0.15 respectively;
or the first component is copper oxide with the mass part of 0.6, the second component is a mixture of aluminum oxide and neodymium oxide with the mass parts of 0.48 and 0.6 respectively, and the third component is a mixture of magnesium oxide and cerium oxide with the mass parts of 0.40 and 0.15 respectively;
or the first component is copper oxide with the mass part of 0.6, the second component is a mixture of aluminum oxide and neodymium oxide with the mass parts of 0.48 and 0.6 respectively, and the third component is a mixture of magnesium oxide and titanium oxide with the mass parts of 0.46 and 0.2 respectively;
or the first component is 0.6 part by mass of copper oxide, the second component is a mixture of 0.48 part by mass, 0.6 part by mass and 0.65 part by mass of aluminum oxide, neodymium oxide and thulium oxide, and the third component is 0.46 part by mass of magnesium oxide;
or the first component is 0.8 part by mass of copper oxide, the second component is 1.3 parts by mass of aluminum oxide, and the third component is a mixture of 0.63 part by mass and 0.1 part by mass of zinc oxide and praseodymium oxide;
or the first component is copper oxide with the mass part of 1 part, the second component is aluminum oxide with the mass part of 0.94 part, and the third component is a mixture of calcium oxide and praseodymium oxide with the mass parts of 0.63 part and 0.1 part respectively.
3. A zirconia ceramic raw material composition is characterized by comprising a zirconia ceramic main body material and a toning composition, wherein the toning composition comprises a first component, a second component and a third component; the mass percentage of the first component in the zirconia ceramic raw material composition is 0.005% -1%, and the first component is copper oxide; the mass percentage of the second component in the zirconia ceramic raw material composition is 0.1% -15%, and the second component is at least one of aluminum oxide, thulium oxide and neodymium oxide; the zirconia ceramic raw material composition comprises 0.01-15 wt% of a third component, wherein the third component is at least one of cerium oxide, zinc oxide, calcium oxide, cobalt oxide, magnesium oxide, strontium oxide, titanium oxide and praseodymium oxide, the zirconia ceramic raw material composition can obtain a non-blackened and jade-like zirconia ceramic, the zirconia ceramic is converted into a polished zirconia ceramic with an equivalent thickness of 0.5mm and a transmittance of less than 45% at a wavelength of 550nm, a chromatic value L is more than or equal to 60, -25 is more than or equal to a and less than or equal to-0.1, and-18 is more than or equal to b and less than or equal to 15;
the second component is aluminum oxide, and the third component is a mixture of magnesium oxide, cobalt oxide and cerium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is calcium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is a mixture of strontium oxide and cerium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is a mixture of magnesium oxide and cerium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide and neodymium oxide, and the third component is a mixture of magnesium oxide and titanium oxide; alternatively, the first and second electrodes may be,
the second component is a mixture of aluminum oxide, neodymium oxide and thulium oxide, and the third component is magnesium oxide; alternatively, the first and second electrodes may be,
the second component is aluminum oxide, and the third component is a mixture of zinc oxide and praseodymium oxide; alternatively, the first and second electrodes may be,
the second component is alumina, and the third component is a mixture of calcium oxide and praseodymium oxide.
4. The zirconia ceramic raw material composition according to claim 3,
the zirconia ceramic main body material comprises, by mass, 98.999 parts of zirconia ceramic main body material, 0.001 part of copper oxide as a first component, 0.34 part of alumina as a second component, and 0.43 part, 0.01 part and 0.22 part of a mixture of magnesium oxide, cobalt oxide and cerium oxide;
or the zirconia ceramic main body material is 92.95 parts by mass, the first component is 5 parts by mass of copper oxide, the second component is a mixture of 0.48 part by mass and 0.91 part by mass of aluminum oxide and neodymium oxide, and the third component is 0.66 part by mass of calcium oxide;
or 98.305 parts by mass of the zirconia ceramic main body material, 0.005 part by mass of copper oxide as the first component, 0.48 part by mass of a mixture of aluminum oxide and neodymium oxide and 0.6 part by mass of a mixture of aluminum oxide and neodymium oxide respectively as the second component, and 0.46 part by mass of a mixture of strontium oxide and cerium oxide respectively as the third component;
or 97.77 parts by mass of the zirconia ceramic main body material, 0.6 part by mass of copper oxide as the first component, 0.48 part by mass of a mixture of aluminum oxide and neodymium oxide and 0.6 part by mass of a mixture of aluminum oxide and neodymium oxide respectively as the second component, and 0.40 part by mass of a mixture of magnesium oxide and cerium oxide respectively as the third component;
or 97.77 parts by mass of the zirconia ceramic main body material, 0.6 part by mass of copper oxide as the first component, 0.48 part by mass of a mixture of aluminum oxide and neodymium oxide and 0.6 part by mass of a mixture of aluminum oxide and neodymium oxide respectively as the second component, and 0.46 part by mass of a mixture of magnesium oxide and titanium oxide respectively as the third component;
or 97.77 parts by mass of the zirconia ceramic main body material, 0.6 part by mass of copper oxide as the first component, 0.48 part, 0.6 part and 0.65 part by mass of a mixture of aluminum oxide, neodymium oxide and thulium oxide as the second component, and 0.46 part by mass of magnesium oxide as the third component;
or 97.17 parts by mass of the zirconia ceramic main body material, 0.8 part by mass of copper oxide as the first component, 1.3 parts by mass of alumina as the second component, and 0.63 part by mass and 0.1 part by mass of a mixture of zinc oxide and praseodymium oxide as the third component;
or 97.33 parts by mass of the zirconia ceramic main body material, 1 part by mass of copper oxide as the first component, 0.94 part by mass of alumina as the second component, and 0.63 part by mass and 0.1 part by mass of a mixture of calcium oxide and praseodymium oxide as the third component.
5. The zirconia ceramic raw material composition according to claim 3 or 4, wherein the zirconia ceramic raw material composition does not contain iron oxide and silicon oxide.
6. The zirconia ceramic raw material composition according to claim 3 or 4, wherein the zirconia ceramic main body material comprises zirconia containing hafnium oxide and yttria, and the mass percentage of the yttria in the zirconia ceramic raw material composition is 2.5% to 7.85%.
7. The zirconia ceramic raw material composition according to claim 6, wherein the mass percentage of the yttria in the zirconia ceramic raw material composition is 3% to 6.3%.
8. The zirconia ceramic raw material composition according to claim 3 or 4, wherein the zirconia ceramic raw material composition has a D50 of 0.05 to 1.50 μm and a specific surface area of 6m2/g～25m2Powder per gram.
9. A zirconia ceramic produced from the zirconia ceramic raw material composition according to any one of claims 3 to 8.
10. A method for producing a zirconia ceramic, characterized in that a zirconia ceramic is obtained by molding and sintering the zirconia ceramic raw material composition according to any one of claims 3 to 8.
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