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Method of synthesizing MgO/Y2O3 nano powder by microwave combustion

A technology of nano-powder and microwave combustion, which is applied in the preparation of MgO/Y2O3 nano-powder and the field of microwave combustion synthesis of MgO/Y2O3 nano-powder, which can solve the problems of complex preparation process and high production cost of xerogel, and achieve powder The effect of small crystal grain, low production cost and simple process

Inactive Publication Date: 2014-07-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this patent is that the xerogel preparation process is complicated and the production cost is high

Method used

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  • Method of synthesizing MgO/Y2O3 nano powder by microwave combustion

Examples

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Effect test

Embodiment 1

[0026] A Microwave Combustion Synthesis of MgO / Y 2 o 3 The method of nanometer powder, the steps are as follows:

[0027] (1) Weigh 46g of yttrium nitrate, 34g of magnesium acetate, 20g of magnesium nitrate, and mix to obtain Mg 2+ :Y 3+ A ternary raw material system with a molar ratio of 2:1;

[0028] (2) Add water to the ternary raw material system prepared in step (1), and the weight ratio of raw material to water is 1:2. Stir at 70°C until a clear precursor solution is formed, then continue to stir for 1 hour to ensure that the components in the solution are uniform;

[0029] (3) Directly put the clarified precursor solution prepared in step (2) in a corundum crucible and place it in a microwave oven with a frequency of 2.45 GHz, and heat it at 300 W for 18 min. After rapid boiling, evaporation and self-propagating combustion of the solution, get Mg 2+ :Y 3+ MgO / Y with a molar ratio of 2:1 2 o 3 Nano powder.

[0030] Depend on figure 1 It can be seen that the ob...

Embodiment 2

[0032] A Microwave Combustion Synthesis of MgO / Y 2 o 3 The method of nanometer powder, the steps are as follows:

[0033] (1) Weigh 42g of magnesium nitrate, 35g of yttrium acetate, and 23g of yttrium nitrate, and mix them to obtain Mg 2+ :Y 3+A ternary raw material system with a molar ratio of 1:1;

[0034] (2) Add water to the ternary raw material system prepared in step (1), and the weight ratio of raw material to water is 1:3. Stir at 60°C until a clear precursor solution is formed, then continue to stir for 2 hours to ensure that the components in the solution are uniform;

[0035] (3) Directly put the clarified precursor solution prepared in step (2) in a corundum crucible and place it in a microwave oven with a frequency of 2.45 GHz, and heat it for 3 minutes at a power of 1000 W. After rapid boiling, evaporation and self-propagating combustion of the solution, get Mg 2+ :Y 3+ MgO / Y with a molar ratio of 1:1 2 o 3 Nano powder. The average particle size is abou...

Embodiment 3

[0037] A Microwave Combustion Synthesis of MgO / Y 2 o 3 The method of nanometer powder, the steps are as follows:

[0038] (1) Weigh 65g of yttrium nitrate, 22g of magnesium acetate, and 13g of yttrium acetate, and mix them to obtain Mg 2+ :Y 3+ A ternary raw material system with a molar ratio of 1:2;

[0039] (2) Add water to the ternary raw material system prepared in step (1), and the weight ratio of the total raw material to water is 1:2. Stir at 80°C until a clear precursor solution is formed, then continue to stir for 1 hour to ensure that the components in the solution are uniform;

[0040] (3) Put the clarified precursor solution prepared in step (2) in a corundum crucible and place it in a microwave oven with a frequency of 2.45GHz, heat it at 800W for 7min, and undergo rapid boiling, evaporation and self-propagating combustion of the solution to obtain Mg 2+ :Y 3+ MgO / Y with a molar ratio of 1:2 2 o 3 Nano powder. The average particle size is about 45nm.

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Abstract

The invention relates to a method of synthesizing MgO / Y2O3 nano powder by microwave combustion. The method comprises the steps of: preparing a precursor liquor by taking a ternary material system consisting of any three of yttrium nitrate, magnesium nitrate, yttrium acetate and magnesium acetate as a precursor material, and water as a solvent, wherein nitrate is an oxidant, and acetate is a reducing agent; directly heating the precursor liquor in a microwave oven under constant power, and carrying out liquor rapid boiling, evaporating and self-propagating combustion reaction to prepare the MgO / Y2O3 nano powder. The method disclosed by the invention is simple in process, quick in synthesis speed, low in energy consumption and easy for industrialization; particle size of a product is controlled very well, and dispersion of the product is effectively improved.

Description

technical field [0001] The present invention relates to MgO / Y 2 o 3 The preparation method of nanopowder, specifically relates to a kind of microwave combustion synthesis MgO / Y 2 o 3 The nanometer powder method belongs to the field of inorganic non-metallic nanomaterials. Background technique [0002] MgO / Y 2 o 3 Infrared transparent ceramics have excellent medium-wave transmittance, high mechanical properties, good impact resistance and corrosion resistance, and can be widely used in high-temperature technology, electronic technology, aerospace and defense industries and other fields. As the preparation of MgO / Y 2 o 3 Raw materials for infrared transparent ceramics, MgO / Y 2 o 3 The powder should have the characteristics of high purity, small particle size and good dispersibility. Therefore, MgO / Y 2 o 3 The research on the preparation of nanopowder is of great significance. [0003] DongTao Jiang et al. synthesized MgO / Y by sol-gel process 2 o 3 Nanopowder, see...

Claims

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Application Information

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IPC IPC(8): C04B35/01C04B35/505C04B35/626
Inventor 张玉军孙海滨龚红宇谭砂砾李腾
Owner SHANDONG UNIV
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