Process for producing aluminum oxide crystal whisker
An alumina whisker and roasting technology, applied in chemical instruments and methods, single crystal growth, crystal growth and other directions, can solve problems such as long mixing time, and achieve the effects of low production cost, low energy consumption, and reduced production cost
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Embodiment 1
[0021] ① Roasting process: mix aluminum potassium sulfate and potassium sulfate at a molar ratio of 1:0.25, stir for 0.5 to 1 hour to make them fully mixed, then put them into a roasting crucible, send them to a roasting furnace, and roast at 1200 ° C for 5 hours;
[0022] ② Soaking process: soak the calcined and cooled crucible and materials in distilled water for 24 hours, so that the materials can dissolve potassium sulfate under heating conditions, and obtain the wet product of alumina whiskers;
[0023] ③Drying process: Put the wet product into an oven, adjust the temperature to 70°C, and dry for 12 hours to obtain alumina whiskers.
[0024] The alumina whisker product was identified as a pure phase by X-ray diffraction. The whiskers have an average diameter of 0.5-3 μm and an average length of 10-100 μm.
Embodiment 2
[0026] ①Roasting process: mix aluminum potassium sulfate and potassium chloride at a molar ratio of 1:5, stir for 0.5-1h to make them fully mixed, then put them into a roasting crucible, send them into a roasting furnace, and roast at 900°C for 5 hours ;
[0027] ② Soaking process: Soak the calcined and cooled crucible and materials in distilled water for 12 hours, so that the materials can dissolve potassium chloride under heating conditions, and obtain the wet product of alumina whiskers;
[0028] ③Drying process: Put the wet product into an oven, adjust the temperature to 100°C, and dry for 10 hours to obtain alumina whiskers.
[0029] The alumina whisker product was identified as a pure phase by X-ray diffraction. The whiskers have an average diameter of 0.5-3 μm and an average length of 12-95 μm.
Embodiment 3
[0031] ① Roasting process: mix aluminum potassium sulfate and potassium carbonate at a molar ratio of 1:10, stir for 0.5 to 1 hour to make them fully mixed, then put them into a roasting crucible, send them to a roasting furnace, and roast at 1100 ° C for 5 hours;
[0032] ② Soaking process: soak the roasted and cooled crucible and materials in distilled water for 24 hours, so that the materials can dissolve potassium chloride under heating conditions to obtain a wet product of alumina whiskers;
[0033] ③Drying process: Put the wet product into an oven, adjust the temperature to 120°C, and dry for 8 hours to obtain alumina whiskers.
[0034] The alumina whisker product was identified as a pure phase by X-ray diffraction. The whiskers have an average diameter of 0.5-3 μm and an average length of 18-108 μm.
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