CN115893485A - Titanium dioxide for hard alloy and preparation method and application thereof - Google Patents
Titanium dioxide for hard alloy and preparation method and application thereof Download PDFInfo
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- CN115893485A CN115893485A CN202211542102.7A CN202211542102A CN115893485A CN 115893485 A CN115893485 A CN 115893485A CN 202211542102 A CN202211542102 A CN 202211542102A CN 115893485 A CN115893485 A CN 115893485A
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- titanium dioxide
- hard alloy
- cemented carbide
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 72
- 239000000956 alloy Substances 0.000 title claims abstract description 52
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 33
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 33
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 33
- 239000006185 dispersion Substances 0.000 claims description 27
- 239000002243 precursor Substances 0.000 claims description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 25
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 19
- 239000004202 carbamide Substances 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000004729 solvothermal method Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 27
- 239000000843 powder Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 10
- 238000004090 dissolution Methods 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 238000004108 freeze drying Methods 0.000 description 7
- -1 polytetrafluoroethylene Polymers 0.000 description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 238000001238 wet grinding Methods 0.000 description 4
- 238000000498 ball milling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- HDUMBHAAKGUHAR-UHFFFAOYSA-J titanium(4+);disulfate Chemical compound [Ti+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O HDUMBHAAKGUHAR-UHFFFAOYSA-J 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses titanium dioxide for hard alloy, a preparation method and application thereof, belonging to the technical field of hard alloy; the D50 of the titanium dioxide is 0.4-0.5 μm; the cemented carbide comprises a Ni-based cemented carbide or a Fe-based cemented carbide. According to the invention, the average particle size of the titanium dioxide is controlled, so that the size of the TiC particles of the reinforcing phase generated in the hard alloy is controlled, and the hardness of the hard alloy is further improved. The invention also realizes the adjustment of the particle size of the titanium dioxide by controlling the preparation method, thereby realizing the accurate control of the particle size of the prepared titanium dioxide.
Description
Technical Field
The invention belongs to the technical field of hard alloys, and particularly relates to titanium dioxide for hard alloys as well as a preparation method and application thereof.
Background
Cemented carbides typically use refractory carbides as the matrix and soft ductile metals (Co, ni, fe, etc.) as the binder phase. The hard alloy combines the advantages of high-hardness refractory metal carbide and bonding metal with good ductility, has a series of excellent performances of high strength and hardness, good wear resistance, small thermal expansion coefficient, high elastic modulus, good chemical stability and the like, and is widely applied to the fields of cutting tools, mine tools, wear-resistant parts and the like.
In order to improve the thermal shock, hot-pressing resistance and oxidation resistance and hardness of the hard alloy, tiC is added into the hard alloy in the related technology; in the related technology, titanium dioxide and carbon black are fully mixed, pressed into a boat and sintered to produce TiC, but the TiC reinforcing phase formed by the method has poor particle uniformity, so that the hardness of the finally prepared hard alloy is low.
Therefore, the invention provides titanium dioxide for hard alloy, and the hard alloy prepared by using the titanium dioxide has high hardness.
Disclosure of Invention
The invention aims to provide titanium dioxide for hard alloy, which solves at least one aspect of the problems and defects in the background technology.
The invention also provides a preparation method of the titanium dioxide.
The invention also provides application of the titanium dioxide.
The invention provides titanium dioxide for hard alloy, wherein the D50 of the titanium dioxide is 0.4-0.5 μm;
the cemented carbide comprises a Ni-based cemented carbide or a Fe-based cemented carbide.
According to one of the technical schemes of the titanium dioxide, the invention at least has the following beneficial effects:
according to the invention, the average particle size of titanium dioxide is controlled, so that the size of TiC particles of the reinforcing phase generated in the hard alloy is controlled, and the hardness of the hard alloy is further improved; if the average particle size of the titanium dioxide is too small, the growth difficulty of the reinforcing phase is increased, and the reinforcing phase is not favorable for playing a good hardness reinforcing effect; if the average particle size of titanium dioxide is too large, coarse TiC particles are formed, so that the TiC distribution uniformity in the cemented carbide is poor, and the reinforcing phase is not favorable for achieving a good hardness reinforcing effect.
According to some embodiments of the invention, the titanium dioxide has a D10 of 0.1 μm to 0.2 μm.
According to some embodiments of the invention, the titanium dioxide has a D90 of 0.8 μm to 0.9 μm.
According to the invention, the particle size distribution of the titanium dioxide is further controlled by controlling the titanium dioxide D10 and D90, so that the particle size uniformity of the titanium dioxide is controlled, the particle size of the reinforcing phase is controlled, and the hardness of the hard alloy is further improved.
According to some embodiments of the invention, the titanium dioxide has a D50 of 0.3 μm to 0.4 μm.
According to some embodiments of the invention, the titanium dioxide has a D50 of 0.35 to 0.4 μm.
According to the invention, the hardness of the hard alloy is further improved by further controlling the D50 of the titanium dioxide.
According to some embodiments of the invention, the cemented carbide comprises the following raw materials in parts by weight:
9 to 10 parts of Co powder, 8 to 9 parts of Ni powder, 1 to 2 parts of Fe powder, 77 to 78 parts of WC powder, 10 to 25 parts of titanium dioxide for hard alloy and 3 to 8 parts of carbon powder.
The second aspect of the invention provides a method for preparing the titanium dioxide for the hard alloy, which comprises the following steps:
mixing titanium sulfate, urea, water and ethanol to prepare precursor dispersion liquid; and carrying out solvent thermal reaction on the precursor dispersion liquid.
According to some embodiments of the invention, the volume ratio of ethanol to water is 7 to 5.
According to the invention, the volume ratio of ethanol to water is controlled, so that the dissolution of titanium sulfate is controlled, the dissolved titanium sulfate is gradually hydrolyzed, the hydrolysis reaction of the titanium sulfate is effectively controlled, the nucleation process of titanium dioxide is prolonged, the uniformity of the titanium dioxide is improved, and the size of the titanium dioxide is controlled.
According to some embodiments of the invention, the molar concentration of titanium sulfate in the precursor dispersion is between 0.04mol/L and 0.06mol/L.
The concentration of titanium sulfate affects the number of crystal nuclei, which affects the average particle size of titanium dioxide; therefore, the concentration of the titanium sulfate is controlled, so that the particle size of the titanium dioxide is controlled.
According to some embodiments of the invention, the temperature of the solvothermal reaction is from 140 ℃ to 160 ℃.
The temperature of the solvothermal reaction is controlled, so that the pressure in the solvothermal reaction process is controlled, the activity of water is further controlled, the hydrolysis process of titanium sulfate is controlled, and the uniformity and the size of titanium dioxide are controlled.
According to some embodiments of the invention, the heat of solution reaction is between 5h and 7h.
According to some embodiments of the invention, the molar ratio of urea to titanium sulphate is 1.5-2.5.
The content of urea influences the hydroxyl content in a solvothermal reaction system, and the low hydroxyl content can result in incomplete reaction of titanium sulfate and less formed crystal nucleus, so that the particle size of titanium dioxide is influenced.
The third aspect of the invention provides the application of the hard alloy titanium dioxide in preparing a hard alloy reinforcing phase.
According to some embodiments of the invention, the cemented carbide reinforcing phase is TiC.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.
Example 1
The embodiment is a preparation method of titanium dioxide for hard alloy, which comprises the following steps:
mixing titanium sulfate (Ti (SO) 4 ) 2 ) And mixing urea, water and ethanol to form a precursor dispersion liquid (wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.05mol/L, the molar ratio of titanium sulfate to urea is 1: 7) (ii) a
Adding the precursor dispersion liquid into a polytetrafluoroethylene reaction kettle to carry out solvothermal reaction, wherein the solvothermal temperature is 150 ℃, and the solvothermal time is 6 hours; and performing solid-liquid separation after the dissolution heat reaction, washing, and freeze-drying to obtain the titanium dioxide for the hard alloy.
Example 2
The embodiment is a preparation method of titanium dioxide for hard alloy, which comprises the following steps:
mixing titanium sulfate (Ti (SO) 4 ) 2 ) And mixing urea, water and ethanol to form a precursor dispersion liquid (wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.05mol/L, the molar ratio of titanium sulfate to urea is 1: 7) (ii) a
Adding the precursor dispersion liquid into a polytetrafluoroethylene reaction kettle to carry out solvothermal reaction, wherein the solvothermal temperature is 150 ℃, and the solvothermal time is 6 hours; and performing solid-liquid separation after the dissolution heat reaction, washing, and freeze-drying to obtain the titanium dioxide for the hard alloy.
Example 3
The embodiment is a preparation method of titanium dioxide for hard alloy, which comprises the following steps:
mixing titanium sulfate (Ti (SO) 4 ) 2 ) And mixing urea, water and ethanol to form a precursor dispersion liquid (wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.05mol/L, the molar ratio of titanium sulfate to urea is 1: 7) (ii) a
Adding the precursor dispersion liquid into a polytetrafluoroethylene reaction kettle to carry out solvothermal reaction, wherein the solvothermal temperature is 150 ℃, and the solvothermal time is 6 hours; and carrying out solid-liquid separation after the dissolution heat reaction, washing, and freeze-drying after washing to obtain the titanium dioxide for the hard alloy.
Example 4
The embodiment is a preparation method of titanium dioxide for hard alloy, which comprises the following steps:
mixing titanium sulfate (Ti (SO) 4 ) 2 ) And mixing urea, water and ethanol to form a precursor dispersion liquid (wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.05mol/L, the molar ratio of titanium sulfate to urea is 1: 7) (ii) a
Adding the precursor dispersion liquid into a polytetrafluoroethylene reaction kettle to carry out solvothermal reaction, wherein the solvothermal temperature is 150 ℃, and the solvothermal time is 6 hours; and performing solid-liquid separation after the dissolution heat reaction, washing, and freeze-drying to obtain the titanium dioxide for the hard alloy.
Example 4
The embodiment is a preparation method of titanium dioxide for hard alloy, which comprises the following steps:
mixing titanium sulfate (Ti (SO) 4 ) 2 ) And urea, water and ethanol are mixed to form a precursor dispersion liquid (wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.05mol/L, the molar ratio of titanium sulfate to urea is 1: 7) (ii) a
Adding the precursor dispersion liquid into a polytetrafluoroethylene reaction kettle to carry out solvothermal reaction, wherein the solvothermal temperature is 150 ℃, and the solvothermal time is 6 hours; and performing solid-liquid separation after the dissolution heat reaction, washing, and freeze-drying to obtain the titanium dioxide for the hard alloy.
Comparative example 1
The comparative example is a preparation method of titanium dioxide for hard alloy, and the preparation method comprises the following steps:
mixing titanium sulfate (Ti (SO) 4 ) 2 ) And mixing urea, water and ethanol to form a precursor dispersion liquid (wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.05mol/L, the molar ratio of titanium sulfate to urea is 1: 7) (ii) a
Adding the precursor dispersion liquid into a polytetrafluoroethylene reaction kettle to carry out solvothermal reaction, wherein the solvothermal temperature is 150 ℃, and the solvothermal time is 6 hours; and performing solid-liquid separation after the dissolution heat reaction, washing, and freeze-drying to obtain the titanium dioxide for the hard alloy.
Comparative example 2
The comparative example is a preparation method of titanium dioxide for hard alloy, and the preparation method comprises the following steps:
mixing titanium sulfate (Ti (SO) 4 ) 2 ) And urea, water and ethanol are mixed to form a precursor dispersion liquid (wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.05mol/L, the molar ratio of titanium sulfate to urea is 1: 4) (ii) a
Adding the precursor dispersion liquid into a polytetrafluoroethylene reaction kettle to carry out solvothermal reaction, wherein the solvothermal temperature is 150 ℃, and the solvothermal time is 6 hours; and performing solid-liquid separation after the dissolution heat reaction, washing, and freeze-drying to obtain the titanium dioxide for the hard alloy.
The particle size of the titanium dioxide for cemented carbide prepared in examples 1 to 5 and comparative examples 1 to 2 of the present invention was measured using a laser particle size analyzer, and the test results are shown in table 1.
TABLE 1 particle size of titanium dioxide for cemented carbide prepared in inventive examples 1-5 and comparative examples 1-2
As can be seen from the data in Table 1, titanium dioxide materials for cemented carbide with different particle size distributions are prepared by the method.
Application example
The hard alloy titanium dioxide prepared in the embodiments 1-5 and the comparative examples 1-2 of the invention is respectively applied to the preparation of hard alloy.
In the application example, the hard alloy comprises the following preparation raw materials in parts by weight:
10 parts of Co powder, 9 parts of Ni powder, 1 part of Fe powder, 78 parts of WC powder, 10 parts of titanium dioxide for hard alloy (prepared in examples 1-5 or comparative examples 1-2) and 3.3 parts of carbon powder.
The D50 of the Co powder is 1.5 mu m;
the D50 of the Ni powder is 2.5 mu m;
the average grain diameter of the Fe powder is 2.5 mu m;
d50 of WC powder is 1 μm;
the mesh number of the carbon powder is 300 meshes.
The preparation method of the hard alloy in the application example comprises the following steps:
s1, preparing materials:
adding a forming agent into Co powder, ni powder, fe powder, WC powder, titanium dioxide for hard alloy and carbon powder, and carrying out wet grinding treatment and uniform mixing to obtain wet grinding slurry;
the forming agent is refined paraffin, and the addition amount of the refined paraffin is 2 percent of the weight of the hard alloy powder;
the wet grinding treatment process parameters are as follows: the ball material ratio is 4:1, ball milling medium is alcohol, the liquid-solid ratio of the alcohol to the raw materials is 235mL/kg, the ball milling time is 36h, and the ball milling speed is 35 r/min;
s2, filtering and screening the wet grinding slurry prepared in the S1, and performing vacuum drying at 100 ℃;
s3, compression molding:
performing compression molding on the material particles subjected to the screen wiping and screening by adopting a bidirectional compression mode under the condition that the pressure is 150MPa to obtain a semi-finished product;
s4, dewaxing, sintering and forming:
keeping the temperature of 900 ℃ for 90min in the nitrogen-hydrogen mixed gas, and removing the binder; introducing argon gas at 5MPa, sintering at 1400 deg.C under low pressure, maintaining for 1.5h, and cooling to room temperature (25 deg.C) to obtain the final product.
The hardness test results of the cemented carbide produced in this application example are shown in table 2.
Table 2 hardness test results of the cemented carbide produced in this application example
| - | Hardness (25 ℃, HRA) |
| Example 1 | 93.3 |
| Example 2 | 94.6 |
| Example 3 | 96.7 |
| Example 4 | 98.6 |
| Example 5 | 94.8 |
| Comparative example 1 | 87.2 |
| Comparative example 2 | 86.9 |
From the above table, the present invention obtains a hard alloy material with high hardness by controlling the particle size of titanium dioxide.
In conclusion, the average particle size of the titanium dioxide is controlled, so that the size of the TiC particles of the reinforcing phase generated in the hard alloy is controlled, and the hardness of the hard alloy is further improved; if the average particle size of the titanium dioxide is too small, the growth difficulty of the reinforcing phase is increased, and the reinforcing phase is not favorable for playing a good hardness reinforcing effect; if the average particle size of titanium dioxide is too large, coarse TiC particles are formed, so that the uniformity of TiC distribution in the hard alloy is poor, and the reinforcing phase is not favorable for achieving a good hardness reinforcing effect.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Titanium dioxide for hard alloy is characterized in that the D50 of the titanium dioxide is 0.4-0.5 μm;
the cemented carbide comprises a Ni-based cemented carbide or a Fe-based cemented carbide.
2. Titanium dioxide for cemented carbide according to claim 1, characterized in that the D10 of the titanium dioxide is 0.1 to 0.2 μm.
3. Titanium dioxide for hard alloys according to claim 1, characterized in that the D90 of the titanium dioxide is 0.8 to 0.9 μm.
4. Titanium dioxide for hard alloy according to claim 1, wherein the D50 of the titanium dioxide is 0.3 μm to 0.4 μm.
5. A method for preparing titanium dioxide for cemented carbide according to any one of claims 1 to 4, characterized in that it comprises the following steps:
mixing titanium sulfate, urea, water and ethanol to prepare precursor dispersion liquid; and carrying out solvent thermal reaction on the precursor dispersion liquid.
6. The method according to claim 5, wherein the volume ratio of ethanol to water is 7.
7. The method according to claim 5, wherein the molar concentration of titanium sulfate in the precursor dispersion liquid is 0.04mol/L to 0.06mol/L.
8. The process according to claim 5, wherein the temperature of the solvothermal reaction is in the range of 110 ℃ to 130 ℃.
9. The method according to claim 5, wherein the molar ratio of urea to titanium sulfate is 1.5 to 2.5.
10. Use of titanium dioxide for cemented carbide according to any one of claims 1 to 4 for the preparation of a cemented carbide reinforcing phase.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1161315A (en) * | 1997-08-26 | 1999-03-05 | Toshiba Tungaloy Co Ltd | Wc-containing cemented carbide reinforced by dispersion in grain and its production |
| JP2016132760A (en) * | 2015-01-22 | 2016-07-25 | 株式会社大阪ソーダ | Titanium oxide dispersion |
| WO2022073390A1 (en) * | 2020-10-09 | 2022-04-14 | 安徽金星钛白（集团）有限公司 | Preparation method for high weather resistance anatase titanium dioxide powder |
-
2022
- 2022-12-02 CN CN202211542102.7A patent/CN115893485B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1161315A (en) * | 1997-08-26 | 1999-03-05 | Toshiba Tungaloy Co Ltd | Wc-containing cemented carbide reinforced by dispersion in grain and its production |
| JP2016132760A (en) * | 2015-01-22 | 2016-07-25 | 株式会社大阪ソーダ | Titanium oxide dispersion |
| WO2022073390A1 (en) * | 2020-10-09 | 2022-04-14 | 安徽金星钛白（集团）有限公司 | Preparation method for high weather resistance anatase titanium dioxide powder |
Non-Patent Citations (2)
| Title |
|---|
| 刘珊珊: "WO3、TiO2及其复合粉体的水热制备工艺及光催化性能研究", 《中国优秀硕士学位论文全文数据库-工程科技Ⅰ辑》, no. 1, pages 020 - 99 * |
| 沈毅 等: "二氧化钛微米球形颗粒的制备与研究", 《硅酸盐通报》, no. 3, pages 96 - 98 * |
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