Preparation method of nano aluminium nitride powder
A nano-aluminum nitride and aluminum nitride technology, which is applied in chemical instruments and methods, nitrogen compounds, inorganic chemistry, etc., can solve the problems of difficult control of combustion temperature, long preparation time of precursors, and difficulty in mass production, etc. The effect of carbothermal reduction reaction temperature, fine aluminum source particles, and tight combination
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[0023] Example 1:
[0024] Weigh 0.1 moles of aluminum nitrate, 0.17 moles of glycine, and 0.13 moles of glucose, dissolve various raw materials in distilled water to prepare a solution, and place the solution on a temperature-controlled electric furnace for heating. After the solution undergoes a series of reactions such as volatilization, concentration, and decomposition, a precursor powder is obtained. After the precursor powder is reacted at 1600°C under nitrogen atmosphere for 3 hours, the product is reacted at 700°C under air atmosphere for 2 hours. A nano aluminum nitride powder with a particle size of about 35-47 nm, good sphericity and dispersibility is obtained.
Example Embodiment
[0025] Example 2:
[0026] Weigh 0.1 moles of aluminum chloride, 0.3 moles of ammonium nitrate, 0.1 moles of glycine, and 0.13 moles of glucose, dissolve various raw materials in distilled water to prepare a solution, and place the solution on a temperature-controlled electric furnace for heating. After the solution undergoes a series of reactions such as volatilization, concentration and decomposition, the precursor powder is obtained. After the precursor powder is reacted at 1500°C under nitrogen atmosphere for 2 hours, the product is reacted at 700°C under air atmosphere for 2 hours. A nano aluminum nitride powder with a particle size of about 33-45 nm, good sphericity and dispersibility is obtained.
Example Embodiment
[0027] Example 3:
[0028] Weigh 0.1 moles of aluminum chloride, 0.3 moles of ammonium nitrate, 0.05 moles of glycine, and 0.17 moles of glucose, dissolve various raw materials in distilled water to prepare a solution, and place the solution on a temperature-controlled electric furnace for heating. After the solution undergoes a series of reactions such as volatilization, concentration, and decomposition, the precursor powder is obtained. After the precursor powder is reacted at 1450°C under nitrogen atmosphere for 3 hours, the product is reacted at 700°C under air atmosphere for 2 hours. A nano aluminum nitride powder with a particle size of about 30-42 nm, good sphericity and dispersibility is obtained.
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