CN114804635B - High-temperature-resistant and oxidation-resistant ceramic glaze and preparation method thereof - Google Patents
High-temperature-resistant and oxidation-resistant ceramic glaze and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of ceramic glaze materials, and particularly relates to a high-temperature-resistant and oxidation-resistant ceramic glaze material and a preparation method thereof. The glaze comprises the following components in parts by weight: 40-50 parts of baddeleyite; 4-8 parts of anorthite; 4-8 parts of diopside, 3-6 parts of boron carbide whisker, 3-6 parts of silicon carbide whisker and 1-3 parts of nanometer lanthanum oxide; 1-3 parts of nano praseodymium oxide; 3-6 parts of polyethyl acrylate; 4-8 parts of dimethyl diallyl ammonium chloride; 25-35 parts of water. The high-temperature-resistant and oxidation-resistant ceramic glaze provided by the invention has excellent strength and high-temperature-resistant and oxidation-resistant performances through the mutual matching of the components and the control of the preparation method.
Description
Technical Field
The invention belongs to the technical field of ceramic glaze materials. More particularly relates to a high-temperature-resistant and oxidation-resistant ceramic glaze and a preparation method thereof.
Background
The glaze layer of the heat-resistant daily ceramic has close relation with the production process and the final use performance of ceramic products. The ceramic glaze can adjust the technological performance of the glaze, greatly reduce the cost of the glaze, and ensure that the product has low expansion performance and good thermal performance and has important significance for the production of heat-resistant porcelain.
CN106145684a discloses a micro-nano composite ceramic glaze, which belongs to the technical field of ceramic glaze preparation; the ceramic glaze is prepared from the following components in parts by weight: 20-50 parts of micron alpha-Al 2 O 3 45-60 parts of micrometer TiC, 2-8 parts of nanometer TiC and 2-8 parts of nanometer ZrO 2 2-8 parts of micron Mo, 2-8 parts of micron Ni, 25-35 parts of silicon carbide, 30-40 parts of fused corundum, 3-8 parts of mullite, 5-10 parts of aluminate cement, 10-20 parts of composite alkali agent and 20-30 parts of composite silicon oxide micro powder; the ceramic glaze has the advantages of high-temperature resistance, high-temperature oxidation resistance, wear resistance, corrosion resistance and the like of the ceramic material.
CN107162422a discloses a high temperature resistant and oxidation resistant ceramic glaze and a preparation method thereof, and relates to the technical field of ceramic glaze manufacture, wherein the glaze comprises the following raw materials: nano alumina; nano silicon dioxide; nano boron nitride powder, nano boron carbide powder; zinc oxide; kaolin; burning talcum; sodium oxide; calcium oxide; a surfactant; glass fiber; nano titanium dioxide; zinc nitrate; yttrium nitrate. The preparation method comprises the following preparation steps: (1) preparing an antimicrobial agent; (2) preparing a high-temperature-resistant and oxidation-resistant base material; (3) preparing mixed glaze slurry; (4) preparing a final glaze. The invention ensures that the domestic porcelain is not easily oxidized by the high-temperature-resistant and oxidation-resistant base material, keeps the surface of the porcelain bright, and is beneficial to reducing the expansion coefficient of glaze slip, improving the elasticity of the glaze slip and the fluidity of the glaze slip by changing the proportion of the original glaze material and adding the calcined talcum and the zinc oxide, thereby reducing the possibility of pinhole and orange glaze defect on the glaze surface.
CN112047629a discloses a high temperature resistant low expansion ceramic glaze, a preparation method thereof and a ceramic product, wherein the ceramic glaze comprises the following components in parts by weight: 10-25 parts of high-temperature low-expansion frit, 10-40 parts of petalite, 5-20 parts of potassium feldspar, 5-20 parts of spodumene, 10-25 parts of cordierite, 5-15 parts of fused quartz, 3-8 parts of phase-change microcapsule materials, 4-6 parts of calcined zinc oxide and 1-5 parts of pigment. The ceramic glaze disclosed by the invention has a reasonable formula, the obtained ceramic product has the advantages of high temperature resistance, low expansion coefficient and good blank glaze adaptability, the strength, corrosion resistance, rapid cooling and rapid heating resistance and the like of the ceramic product are greatly improved, and the ceramic glaze can be applied to a ceramic pot or an environment with more severe requirements. The preparation method is simple, has good repeatability, and is suitable for large-scale production and the quality-controllable product is obtained.
Although the prior art improves the ceramic glaze correspondingly, the prior ceramic cannot ensure the strength and the excellent high-temperature resistance and oxidation resistance, so the problems are solved based on providing a novel ceramic glaze.
Disclosure of Invention
The invention aims to overcome the defects and the shortcomings in the prior art and provide a high-temperature-resistant and oxidation-resistant ceramic glaze and a preparation method thereof. The glaze comprises the following components in parts by weight: 40-50 parts of baddeleyite; 4-8 parts of anorthite; 4-8 parts of diopside, 3-6 parts of boron carbide whisker, 3-6 parts of silicon carbide whisker and 1-3 parts of nanometer lanthanum oxide; 1-3 parts of nano praseodymium oxide; 3-6 parts of polyethyl acrylate; 4-8 parts of dimethyl diallyl ammonium chloride; 25-35 parts of water. The high-temperature-resistant and oxidation-resistant ceramic glaze provided by the invention has excellent strength and high-temperature-resistant and oxidation-resistant performances through the mutual matching of the components and the control of the preparation method.
The invention aims to provide a high-temperature-resistant and oxidation-resistant ceramic glaze.
The invention also aims to provide a preparation method of the high-temperature-resistant and oxidation-resistant ceramic glaze.
The above object of the present invention is achieved by the following technical scheme:
the high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 40-50 parts of baddeleyite; 4-8 parts of anorthite; 4-8 parts of diopside, 3-6 parts of boron carbide whisker, 3-6 parts of silicon carbide whisker and 1-3 parts of nanometer lanthanum oxide; 1-3 parts of nano praseodymium oxide; 3-6 parts of polyethyl acrylate; 4-8 parts of dimethyl diallyl ammonium chloride; 25-35 parts of water.
Preferably, the particle size of the baddeleyite is 10 to 20 μm.
Preferably, the anorthite has a particle size of 8-16 μm; the particle size of diopside is 10-20 mu m.
Preferably, the length of the silicon carbide whisker is 20-60 nm, and the length-diameter ratio is 30-60:1.
Preferably, the length of the boron carbide whisker is 20-50 nm, and the length-diameter ratio is 40-70:1.
Preferably, the particle size of the nano lanthanum oxide is 30-60 nm; the grain diameter of the nanometer praseodymium oxide is 30-60 nm.
Based on the preparation method of the high-temperature-resistant and oxidation-resistant ceramic glaze, the preparation method comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside, and then placing the components and water into a ball milling tank for ball milling and mixing;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank for continuous ball milling to obtain the glaze.
Preferably, in the step (1), the ball milling time is 7-11 h, and the ball milling rotating speed is 300-400 r/min.
Preferably, in the step (1), the drying is performed at 90 to 110 ℃ for 10 to 16 hours.
Preferably, in the step (2), the ball milling time is 1 to 3 hours.
The invention has the following beneficial effects:
(1) The glaze improves the high-temperature resistance and oxidation resistance of the glaze and simultaneously modifies the mechanical capability of the glaze layer through the mutual synergistic effect of the components.
(2) By adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride and utilizing the mutual coordination between the dispersing agents, the raw materials are fully mixed, the dispersion is more uniform, and the hardness and the bending strength of the glaze layer are modified.
(3) The preparation method disclosed by the invention is simple in process, simple and convenient to operate, and labor and equipment cost are saved.
Detailed Description
The present invention is further illustrated below with reference to specific examples, which are not intended to limit the invention in any way. Unless specifically stated otherwise, the reagents, methods and apparatus employed in the present invention are those conventional in the art.
Reagents and materials used in the following examples are commercially available unless otherwise specified.
Example 1
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 6 parts of anorthite; 6 parts of diopside, 5 parts of boron carbide whisker, 5 parts of silicon carbide whisker and 2 parts of nanometer lanthanum oxide; 2 parts of nano praseodymium oxide; 5 parts of polyethyl acrylate; 6 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm; the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the particle size of the anorthite is 12 microns; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 100deg.C for 14 hr, and ball milling and mixing the above components and water in a ball milling tank; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank, and continuously ball milling for 2 hours to obtain the glaze.
Example 2
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 50 parts of baddeleyite; 4 parts of anorthite; 8 parts of diopside, 3 parts of boron carbide whisker, 6 parts of silicon carbide whisker and 1 part of nanometer lanthanum oxide; 3 parts of nano praseodymium oxide; 3 parts of polyethyl acrylate; 8 parts of dimethyl diallyl ammonium chloride; 25 parts of water.
The length of the silicon carbide whisker is 60nm, and the length-diameter ratio is 60:1;
the length of the boron carbide whisker is 50nm, and the length-diameter ratio is 70:1;
the grain diameter of the nanometer lanthanum oxide is 60nm; the grain diameter of the nanometer praseodymium oxide is 30nm;
the grain size of the baddeleyite is 20 mu m; the particle size of the anorthite is 8 microns; the diopside particle size was 20 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 110 ℃ for 10 hours, and then placing the components and water into a ball milling tank for ball milling and mixing; the ball milling time is 7 hours, and the ball milling rotating speed is 400r/min; 2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank for ball milling for 3 hours to obtain glaze;
example 3
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 40 parts of baddeleyite; 8 parts of anorthite; 4 parts of diopside, 6 parts of boron carbide whisker, 3 parts of silicon carbide whisker and 3 parts of nanometer lanthanum oxide; 1 part of nano praseodymium oxide; 6 parts of polyethyl acrylate; 4 parts of dimethyl diallyl ammonium chloride; 35 parts of water.
The length of the silicon carbide whisker is 20nm, and the length-diameter ratio is 30:1;
the length of the boron carbide whisker is 20nm, and the length-diameter ratio is 40:1;
the grain diameter of the nanometer lanthanum oxide is 30nm; the grain diameter of the nanometer praseodymium oxide is 60nm;
the grain size of the baddeleyite is 10 mu m; the particle size of the anorthite is 16 microns; the diopside particle size was 10 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 90 ℃ for 16 hours, and then placing the components and water into a ball milling tank for ball milling and mixing; the ball milling time is 11h, and the ball milling rotating speed is 300r/min;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank for ball milling for 1h to obtain the glaze.
Comparative example 1
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 12 parts of anorthite, 5 parts of boron carbide whisker, 5 parts of silicon carbide whisker and 2 parts of nano lanthanum oxide; 2 parts of nano praseodymium oxide; 5 parts of polyethyl acrylate; 6 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
preferably, the length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm; the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the anorthite has a particle size of 12 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying the baddeleyite and anorthite at 100 ℃ for 14 hours, and then placing the components and water into a ball milling tank for ball milling and mixing; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank, and continuously ball milling for 2 hours to obtain the glaze.
Comparative example 2
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 12 parts of diopside, 5 parts of boron carbide whisker, 5 parts of silicon carbide whisker and 2 parts of nanometer lanthanum oxide; 2 parts of nano praseodymium oxide; 5 parts of polyethyl acrylate; 6 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm; the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying the baddeleyite and diopside at 100 ℃ for 14 hours, and then placing the components and water into a ball milling tank for ball milling and mixing; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank, and continuously ball milling for 2 hours to obtain the glaze.
Comparative example 3
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 6 parts of anorthite; 6 parts of diopside, 10 parts of boron carbide whisker and 2 parts of nanometer lanthanum oxide; 2 parts of nano praseodymium oxide; 5 parts of polyethyl acrylate; 6 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm; the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the particle size of the anorthite is 12 microns; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 100deg.C for 14 hr, and ball milling and mixing the above components and water in a ball milling tank; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then boron carbide whisker and nanometer lanthanum oxide are added; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank, and continuously ball milling for 2 hours to obtain the glaze.
Comparative example 4
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 6 parts of anorthite; 6 parts of diopside, 10 parts of silicon carbide whisker and 2 parts of nanometer lanthanum oxide; 2 parts of nano praseodymium oxide; 5 parts of polyethyl acrylate; 6 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm; the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the particle size of the anorthite is 12 microns; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 100deg.C for 14 hr, and ball milling and mixing the above components and water in a ball milling tank; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then, silicon carbide whisker and nano lanthanum oxide are added; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank, and continuously ball milling for 2 hours to obtain the glaze.
Comparative example 5
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 6 parts of anorthite; 6 parts of diopside, 5 parts of boron carbide whisker, 5 parts of silicon carbide whisker and 4 parts of nanometer lanthanum oxide; 5 parts of polyethyl acrylate; 6 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the particle size of the anorthite is 12 microns; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 100deg.C for 14 hr, and ball milling and mixing the above components and water in a ball milling tank; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank, and continuously ball milling for 2 hours to obtain the glaze.
Comparative example 6
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 6 parts of anorthite; 6 parts of diopside, 5 parts of boron carbide whisker, 5 parts of silicon carbide whisker and 4 parts of nano praseodymium oxide; 5 parts of polyethyl acrylate; 6 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the particle size of the anorthite is 12 microns; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 100deg.C for 14 hr, and ball milling and mixing the above components and water in a ball milling tank; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then, boron carbide whisker, silicon carbide whisker and nano praseodymium oxide are mixed; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank, and continuously ball milling for 2 hours to obtain the glaze.
Comparative example 7
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 6 parts of anorthite; 6 parts of diopside, 5 parts of boron carbide whisker, 5 parts of silicon carbide whisker and 2 parts of nanometer lanthanum oxide; 2 parts of nano praseodymium oxide; 11 parts of polyethyl acrylate and 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
preferably, the length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm; the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the particle size of the anorthite is 12 microns; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 100deg.C for 14 hr, and ball milling and mixing the above components and water in a ball milling tank; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; adding nano praseodymium oxide and polyethyl acrylate into the ball milling tank, and continuing ball milling for 2 hours to obtain the glaze.
Comparative example 8
The high-temperature-resistant and oxidation-resistant ceramic glaze comprises the following components in parts by weight: 45 parts of baddeleyite; 6 parts of anorthite; 6 parts of diopside, 5 parts of boron carbide whisker, 5 parts of silicon carbide whisker and 2 parts of nanometer lanthanum oxide; 2 parts of nano praseodymium oxide; 11 parts of dimethyl diallyl ammonium chloride; 30 parts of water.
The length of the silicon carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the length of the boron carbide whisker is 40nm, and the length-diameter ratio is 50:1;
the grain diameter of the nanometer lanthanum oxide is 50nm; the grain diameter of the nanometer praseodymium oxide is 50nm;
the grain size of the baddeleyite is 15 mu m; the particle size of the anorthite is 12 microns; the diopside particle size was 15 microns.
The preparation method of the oil comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside at 100deg.C for 14 hr, and ball milling and mixing the above components and water in a ball milling tank; the ball milling time is 9h, and the ball milling rotating speed is 350r/min;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; adding nano praseodymium oxide and dimethyl diallyl ammonium chloride into the ball milling tank, and continuing ball milling for 2 hours to obtain the glaze.
The glazes of examples 1 to 3 and comparative examples 1 to 8 were tested for linear thermal expansion coefficient, hardness and flexural strength by the following methods:
1) Glazing the glaze on the surface of the daily ceramic body, and airing to obtain a glazed daily ceramic body;
2) Roasting the glazed domestic ceramic blank in a nitrogen atmosphere; and then cooling along with the furnace to obtain the high-hardness daily ceramic. The roasting treatment comprises the following specific steps: raising the temperature from room temperature to 400 ℃ at a temperature raising rate of 3 ℃, preserving heat for 5 hours, raising the temperature to 650 ℃ at 7 ℃ for 5 hours, raising the temperature to 1630 ℃ at 9 ℃ and sintering for 6 hours; finally cooling to 750 ℃, and preserving heat for 6 hours.
Measuring the Vickers hardness of the material by adopting a micro Vickers hardness tester, wherein the load is 10N, the loading time is 5S, and the hardness value is the average value of five times of measurement; the bending strength of a sample is tested by adopting a PT-1036PC type universal material testing machine, the size of the sample is 4mm multiplied by 20mm, the span is 16mm, the loading speed of a pressure head is 0.5mm/min, and the bending strength is the average value of three measurement results; ceramics were tested for their linear thermal expansion coefficients according to GBT 16535-1996.
| Hardness Hv (GPa) | Flexural Strength (MPa) | Coefficient of linear thermal expansion (. Times.10) -6 /℃) | |
| Example 1 | 17.6 | 880 | 4.6 |
| Example 2 | 16.8 | 840 | 5.3 |
| Example 3 | 17.2 | 860 | 4.9 |
| Comparative example 1 | 16.4 | 789 | 6.3 |
| Comparative example2 | 15.8 | 753 | 7.5 |
| Comparative example 3 | 16.3 | 785 | 6.5 |
| Comparative example 4 | 16.5 | 796 | 6.1 |
| Comparative example 5 | 16.7 | 810 | 5.5 |
| Comparative example 6 | 16.6 | 800 | 5.8 |
| Comparative example 7 | 16.0 | 765 | 7.1 |
| Comparative example 8 | 16.2 | 779 | 6.8 |
As can be seen from Table 1, the comparison of examples 1-3 and comparative examples 1-8 shows that the high temperature resistant and oxidation resistant ceramic glaze prepared by the invention has excellent hardness, bending strength and high temperature resistant and oxidation resistance, and the invention can well promote the improvement of hardness, bending strength and high temperature resistant and oxidation resistance by utilizing the coordination effect among the components.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (5)
1. A high temperature resistant and oxidation resistant ceramic glaze is characterized in that: the glaze comprises the following components in parts by weight: 40-50 parts of baddeleyite; 4-8 parts of anorthite; 4-8 parts of diopside, 3-6 parts of boron carbide whisker, 3-6 parts of silicon carbide whisker and 1-3 parts of nanometer lanthanum oxide; 1-3 parts of nano praseodymium oxide; 3-6 parts of polyethyl acrylate; 4-8 parts of dimethyl diallyl ammonium chloride; 25-35 parts of water;
the grain size of the baddeleyite is 10-20 mu m; the particle size of the anorthite is 8-16 mu m; the particle size of diopside is 10-20 mu m; the length of the silicon carbide whisker is 20-60 nm, and the length-diameter ratio is 30-60:1; the length of the boron carbide whisker is 20-50 nm, and the length-diameter ratio is 40-70:1; the grain diameter of the nanometer lanthanum oxide is 30-60 nm; the grain diameter of the nanometer praseodymium oxide is 30-60 nm.
2. The method for preparing the high-temperature-resistant and oxidation-resistant ceramic glaze according to claim 1, wherein the method comprises the following steps: the preparation method comprises the following steps:
1) Weighing the following components in parts by weight: respectively drying baddeleyite, anorthite and diopside, and then placing the components and water into a ball milling tank for ball milling and mixing;
2) Then boron carbide whisker, silicon carbide whisker and nanometer lanthanum oxide are mixed; nano praseodymium oxide; adding the polyethyl acrylate and the dimethyl diallyl ammonium chloride into the ball milling tank for continuous ball milling to obtain the glaze.
3. The method for preparing the high-temperature-resistant and oxidation-resistant ceramic glaze according to claim 2, wherein the method comprises the following steps: in the step (1), the ball milling time is 7-11 h, and the ball milling rotating speed is 300-400 r/min.
4. The method for preparing the high-temperature-resistant and oxidation-resistant ceramic glaze according to claim 2, wherein the method comprises the following steps: in the step (1), the drying is carried out for 10-16 hours at 90-110 ℃.
5. The method for preparing the high-temperature-resistant and oxidation-resistant ceramic glaze according to claim 2, wherein the method comprises the following steps: in the step (2), the ball milling time is 1-3 h.
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