CN101462760A - Method for preparing high performance yttrium oxide material - Google Patents
Method for preparing high performance yttrium oxide material Download PDFInfo
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- CN101462760A CN101462760A CNA200910010094XA CN200910010094A CN101462760A CN 101462760 A CN101462760 A CN 101462760A CN A200910010094X A CNA200910010094X A CN A200910010094XA CN 200910010094 A CN200910010094 A CN 200910010094A CN 101462760 A CN101462760 A CN 101462760A
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Abstract
The invention relates to material preparation technology, in particular to a method for preparing a high-performance yttrium oxide material. The method prepares a rod, plate or cylindrical-shaped crystal strengthened yttrium oxide material by adding 0 to 40mol percent additives containing magnesium, strontium, calcium and other elements and adopting a proper sintering system at 1,000 to 1,800 DEG C. The technology has the characteristics of preparing the rod, plate or cylindrical-shaped crystal strengthened yttrium oxide material by adding the proper additives and adopting a proper sintering system. The content of the rod, plate or cylindrical-shaped crystals can be controlled by adjusting the factors such as the sintering system and the types and adding amount of the additives. The prepared yttrium oxide material has the advantages of high density, good heat and shock resistant performance, high strength and so on. In addition, the added additives can reduce the sintering temperature, save energy consumption and improve production efficiency. The method is simple in technical process, low in equipment investment and favorable for industrial large-scale production.
Description
Technical field:
The present invention relates to material preparation technology, be specially a kind of method for preparing high performance yttrium oxide material.
Background technology:
China is the most abundant country of yttrium oxide reserves in the world.The exploitation high performance yttrium oxide material not only can strengthen the development and utilization of the yttrium oxide resource of China's abundant, and can improve the production and the consumption structure of China's yttrium oxide, strengthens China and the competitive power of world developed country in the novel material development and utilization.
Yttrium has good characteristics such as fusing point height, anti-erosion, has broad application prospects.But, sintering temperature height, drawbacks limit such as thermal shock resistance is poor, intensity is lower its development.Studies show that, add the sintering that suitable additive not only can promote material, reduce sintering temperature, and can improve some performance of material.As by introducing ways such as additive and crystal seed, induce and wait axle shape alumina grain different growth to become crystal grain tabular or the long column shape pattern, have that crack deflection effect and crystal grain such as extract at effect and the fracture toughness property raising that makes alumina-ceramic.So adding suitable additive, improving material property is the effective way that improves the Yttrium oxide material level of application.
Summary of the invention:
The present invention adopts the adding additive method, use 1000 ℃-1800 ℃ of suitable sintering schedules down bar-shaped, the tabular or long column shape crystal grain of preparation and obtain to have the intensity height, high performance yttrium oxide material that thermal shock resistance is good.According to the difference in yttrium oxide source, implementation method can be divided into two kinds:
(1) direct sintering
With the yttrium oxide powder is raw material, and after additive and the moulding of yttrium oxide powder mixing, 1300 ℃ of-1800 ℃ of following heating can obtain bar-shaped, tabular or long column shape crystal grain enhanced high performance yttrium oxide material:
A: yttrium oxide powder: particle diameter 0-3mm, purity is higher than 60%;
B: additive is selected: contain the material of elements such as magnesium, strontium, calcium, as magnesium oxide, magnesiumcarbonate, strontium oxide, calcium oxide, lime carbonate etc.Material purity is higher than 60%;
C: additive add-on: the amount that contains elemental substances such as magnesium, strontium, calcium is 0-40mol%;
D: sintering schedule: both can adopt direct heating and refrigerative method, and also can adopt high temperature sintering behind the low-temperature prewarming, low temperature continues the sintering schedule of heating then.Wherein, maximum heating temperature is 1300 ℃-1800 ℃;
E: bar-shaped, tabular or long column crystal grain content: can control by changing additive types and add-on and sintering schedule, generally greater than 2vol%.
(2) two-step approach
In water or alcohol-water solution, utilize method such as co-precipitation to obtain nano level powder stock the water-soluble substance dissolves that contains the yttrium material and contain additive component; Perhaps adopt combustion synthesis method to prepare nanoscale powder.Under certain condition that utilization after the nanometer powder moulding is suitable sintering schedule obtains bar-shaped, tabular or long column shape crystal grain enhanced Yttrium oxide material down for 1000 ℃-1800 ℃:
A: contain the yttrium material: material such as citric acid yttrium or Yttrium trinitrate that can be water-soluble, Yttrium trichloride.Purity is higher than 60%;
B: sintering aid: contain the material of elements such as magnesium, strontium, calcium, as magnesium nitrate, strontium nitrate, nitrocalcite, calcium chloride etc.Purity is higher than 60%;
C: sintering aid addition: the amount that contains elemental substances such as magnesium, strontium, calcium is 0-40mol%;
D: nanometer powder preparation method: can adopt coprecipitation method, hydrothermal method, methods such as sol-gel method also can adopt combustion synthesis method;
E: sintering schedule: both can adopt the ordinary sinter method, and also can adopt high temperature sintering behind the low-temperature prewarming, low temperature continues the sintering schedule of heating then.Wherein, maximum heating temperature is 1000 ℃-1800 ℃;
F: bar-shaped, tabular or long column crystal grain content: can control by changing additive types and add-on and sintering schedule, generally greater than 2vol%.
The present invention has following advantage:
1. original position generates bar-shaped, tabular or long column crystal grain in the yttrium oxide matrix, improves the heat-shock resistance and the intensity of material;
2. can be by changing bar-shaped, the tabular or long column crystal grain content of additive types and add-on and sintering schedule control.
3. can prepare fine and close and erosion resistant Yttrium oxide material under lower sintering temperature, both energy-conserving and environment-protective have improved production efficiency again.
4. method two can accurately be controlled content of additive, and they are disperseed very uniformly, obtains the nano level raw material.Just can obtain the compact yttria material after utilizing this raw material to heat more than 1000 ℃.
5. technology is simple, and facility investment is few, helps large-scale industrialization production.
Description of drawings:
Fig. 1 is the microtexture of the Yttrium oxide material of adding 1mol% additive.
Fig. 2 is the microtexture of the Yttrium oxide material of adding 5mol% additive.
Embodiment:
Below by embodiment in detail the present invention is described in detail.
Embodiment 1
With median size is that the yttrium oxide powder of 1 μ m is a raw material, and adding the 1mol% median size is the additive powder of 0.5 μ m, utilize agate grind alms bowl with the abundant mixing of raw material after, with the forming under the pressure of metal die at 100MPa.Then sample is placed MoSi
21600 ℃ of heating 5h can obtain microtexture excellent bar-like grains enhanced high strength Yttrium oxide material as shown in Figure 1 in the resistance furnace.
Embodiment 2
In Yttrium trinitrate, add the 5mol% additive, then mix reagent is added alcohol-water than being also dissolving fully in the alcohol solution of 5:1.Under powerful stirring condition, keep for some time after slowly being heated to 75 ℃, then slowly the pH value of dropping ammonia in solution greater than 9.After utilizing deionized water and alcohol wash, 400 ℃ of calcinings behind the material complete drying that obtains can be obtained nano level powder.With metal die with the forming under the pressure of powder at 100MPa.Then sample is placed MoSi
21500 ℃ of heating 2h can obtain microtexture long column shape crystal grain enhanced high strength Yttrium oxide material as shown in Figure 2 in the resistance furnace.
Claims (2)
1, a kind ofly prepares method bar-shaped, tabular or long column shape crystal grain enhanced Yttrium oxide material, comprise selection, additive selection and add-on, sintering schedule and the mechanism of action of raw material.It is characterized in that:
A: material choice: the various materials that contain yttrium, as yttrium oxide, Yttrium trinitrate etc.The purity of material is higher than 60%.
B: additive is selected: contain the material of elements such as magnesium, strontium, calcium, as magnesium oxide, magnesiumcarbonate, strontium oxide, calcium oxide, lime carbonate etc.The purity of material is higher than 60%.
C: additive add-on: the add-on that contains elemental substances such as magnesium, strontium, calcium is 0-40mol%;
D: preparation method: raw material be dissolved in water contain the yttrium material time to adopt two-step approach, raw material be the water-fast direct sintering that adopts when containing the yttrium material;
E: sintering schedule: both can adopt direct heating and refrigerative method, and also can adopt high temperature sintering behind the low-temperature prewarming, low temperature continues the sintering schedule of heating then.Wherein, the temperature of heat is 1000 ℃-1800 ℃;
F: bar-shaped, tabular or long column crystal grain content: can be by changing the control of additive types and add-on and sintering schedule, generally greater than 2vol%.
G: mechanism of action: bar-shaped, tabular or long column shape crystal grain is distributed in matrix, strengthens the intensity of Yttrium oxide material, improves the thermal shock resistance of material.
2, according to the described method for preparing the high strength Yttrium oxide material of claim 1, it is characterized in that: add the 3-20mol% additive, just can obtain bar-shaped, tabular behind 1400 ℃ of-1600 ℃ of sintering or long column shape crystal grain enhanced Yttrium oxide material, this material has density height, good, the intensity advantages of higher of thermal shock performance.
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| CNA200910010094XA CN101462760A (en) | 2009-01-15 | 2009-01-15 | Method for preparing high performance yttrium oxide material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110793A (en) * | 2015-10-14 | 2015-12-02 | 哈尔滨工业大学 | Preparation method of yttrium oxide ceramic with high thermal shock resistance |
| CN105481000A (en) * | 2015-12-23 | 2016-04-13 | 安徽工业大学 | SrY2O4 nanoneedle and preparation method thereof |
| CN108946788A (en) * | 2018-09-03 | 2018-12-07 | 吴秀碧 | A kind of preparation method of needle-shaped yttrium oxide |
| CN109665868A (en) * | 2018-12-27 | 2019-04-23 | 东北大学 | A kind of preparation method of yttrium oxide functionally gradient material (FGM) |
| CN110002863A (en) * | 2019-04-30 | 2019-07-12 | 江苏师范大学 | A kind of preparation method of Yttrium aluminum garnet porous ceramics |
| CN113880572A (en) * | 2021-11-18 | 2022-01-04 | 天津津航技术物理研究所 | High-strength low-radiation light-transmitting window material and preparation method thereof |
| CN115611641A (en) * | 2022-10-19 | 2023-01-17 | 中国科学院赣江创新研究院 | Magnesium oxide and yttrium oxide powder and preparation method and application thereof |
-
2009
- 2009-01-15 CN CNA200910010094XA patent/CN101462760A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110793A (en) * | 2015-10-14 | 2015-12-02 | 哈尔滨工业大学 | Preparation method of yttrium oxide ceramic with high thermal shock resistance |
| CN105481000A (en) * | 2015-12-23 | 2016-04-13 | 安徽工业大学 | SrY2O4 nanoneedle and preparation method thereof |
| CN105481000B (en) * | 2015-12-23 | 2017-01-18 | 安徽工业大学 | Preparation method of SrY2O4 nano needle |
| CN108946788A (en) * | 2018-09-03 | 2018-12-07 | 吴秀碧 | A kind of preparation method of needle-shaped yttrium oxide |
| CN109665868A (en) * | 2018-12-27 | 2019-04-23 | 东北大学 | A kind of preparation method of yttrium oxide functionally gradient material (FGM) |
| CN110002863A (en) * | 2019-04-30 | 2019-07-12 | 江苏师范大学 | A kind of preparation method of Yttrium aluminum garnet porous ceramics |
| CN110002863B (en) * | 2019-04-30 | 2021-10-15 | 江苏师范大学 | Preparation method of yttrium aluminum garnet porous ceramic |
| CN113880572A (en) * | 2021-11-18 | 2022-01-04 | 天津津航技术物理研究所 | High-strength low-radiation light-transmitting window material and preparation method thereof |
| CN115611641A (en) * | 2022-10-19 | 2023-01-17 | 中国科学院赣江创新研究院 | Magnesium oxide and yttrium oxide powder and preparation method and application thereof |
| CN115611641B (en) * | 2022-10-19 | 2023-10-13 | 中国科学院赣江创新研究院 | Magnesia yttrium oxide powder and preparation method and application thereof |
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Open date: 20090624 |