High porosity micro/nano porous nio/ni material and its preparation method and special equipment
A high-porosity, nano-porous technology, applied in the field of high-porosity micro/nano-porous NiO/Ni materials and their preparation, can solve the problems of difficult preparation, uncontrollable shape and pore morphology of Ni-Al sintered blanks, etc. Uniform distribution, reduced charge transfer resistance and interfacial impedance, and porosity-rich effects
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Embodiment 1
[0044] Embodiment 1: according to the atomic ratio of nickel powder and aluminum powder, it is 1:1 to take raw materials, such as getting 11.8g nickel powder and 5.4g aluminum powder respectively, it is poured into the ball mill tank and carried out 4h uniform mixing, with Anhydrous ethanol is used as the ball milling medium; the mixed solution after ball milling is poured into a beaker, and put into a drying oven to dry for 24 hours; about 0.3g of the mixed powder is weighed, poured into a specific mold for pressing, and the obtained product is about d10mm×1mm The cylindrical green body is put into a vacuum tube furnace for heating, first heated to 480°C for 3 hours at a heating rate of 10°C / min, and then continued to heat up to 700°C for 10 minutes to obtain a micron with high porosity and a complete shape. Porous NiAl material. Prepare 20 wt.% NaOH corrosive solution, then cool to room temperature with the furnace, put the cleaned and dried sintered body into a test tube wi...
Embodiment 2
[0049] Embodiment 2: according to the atomic ratio of nickel powder and aluminum powder, it is 1:1 to take raw materials, such as getting 11.8g nickel powder and 5.4g aluminum powder respectively, it is poured into the ball mill tank and carried out 4h uniform mixing, with Anhydrous ethanol is used as the ball milling medium; the mixed solution after ball milling is poured into a beaker, and put into a drying oven to dry for 24 hours; about 0.3g of the mixed powder is weighed, poured into a specific mold for pressing, and the obtained product is about d10mm×1mm The cylindrical green body is put into a vacuum tube furnace for heating, first heated to 480°C for 3 hours at a heating rate of 10°C / min, and then continued to heat up to 700°C for 10 minutes to obtain a micron with high porosity and a complete shape. Porous NiAl material. Prepare 20 wt.% NaOH corrosion solution, then cool to room temperature with the furnace, put the cleaned and dried sintered body into a test tube wi...
Embodiment 3
[0051] Embodiment 3: according to the atomic ratio of nickel powder and aluminum powder, be 1:1 to take raw material, for example get 11.8g nickel powder and 5.4g aluminum powder respectively, it is poured into the ball mill jar and carry out 4h uniform mixing, with Anhydrous ethanol is used as the ball milling medium; the mixed solution after ball milling is poured into a beaker, and put into a drying oven to dry for 24 hours; about 0.3g of the mixed powder is weighed, poured into a specific mold for pressing, and the obtained product is about d10mm×1mm The cylindrical green body is put into a vacuum tube furnace for heating, first heated to 480°C for 3 hours at a heating rate of 10°C / min, and then continued to heat up to 700°C for 10 minutes to obtain a micron with high porosity and a complete shape. Porous NiAl material. Prepare 20 wt.% NaOH corrosion solution, then cool to room temperature with the furnace, put the cleaned and dried sintered body into a test tube with corr...
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Abstract
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