Yttrium zirconium composite nano-ceramic powder
A technology of nano-ceramic powder and yttrium oxide, which is applied in the field of ceramic materials, can solve problems such as agglomeration, environmental pollution, and large particle size, and achieve the effects of low cost, good toughness, and good fluidity
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Embodiment 1
[0027] ZrOCl with a total weight of 35g 2 ·8H 2 O and Y 2 o 3 The molar ratio is 95:5, dissolved in 100ml of ethanol, 200ml of 5% sodium bicarbonate solution is added, 0.175g of dispersant A15 (acrylic acid ester) is added, and then washed with ultrasonic cleaning equipment for 25 minutes, and then sent to high pressure In the reaction kettle, hydrothermal reaction was carried out at 8MPa and 220°C for 8 hours; the sediment was sent to the high-speed centrifuge washing equipment through the pipeline, and washed at 16000 rpm for 10 minutes, repeated 3 times, to remove sodium chloride ions and residual impurities, that is, pure tetragonal phase yttrium-zirconium composite nano-ceramic powder with high crystallinity can be obtained.
[0028] The particle size of the nano-ceramic powder obtained in this embodiment is between 20 and 30 nm, such as figure 1 shown.
Embodiment 2
[0030] ZrOCl with a total weight of 70g 2 ·8H 2 O and Y 2 o 3 Dissolve in 200ml of ethanol at a molar ratio of 94:6, add 400ml of sodium bicarbonate with a concentration of 6% by mass and mix evenly, then add 0.35g of dispersant A15 (acrylic acid ester), then wash with ultrasonic cleaning equipment for 25 minutes, send Put it into a high-pressure reactor, and conduct a hydrothermal reaction under the conditions of 9Mpa and 230°C for 9 hours; send the sediment to a high-speed centrifuge washing device through a pipeline for repeated filtration 3 times, remove sodium chloride ions and residual impurities, and obtain crystallinity Highly pure tetragonal yttrium-zirconium composite nano-ceramic powder.
[0031] The particle size of the nano-ceramic powder obtained in this embodiment is between 20nm and 30nm.
Embodiment 3
[0033] ZrOCl with a total weight of 350g 2 ·8H 2 O and Y 2 o 3 Dissolve in 1000ml of deionized water at a molar ratio of 92:8, add 2000ml of potassium bicarbonate with a concentration of 7% by mass and mix evenly, then add 1.75g of dispersant A15 (acrylic acid ester), and then wash with ultrasonic cleaning equipment for 25 minutes. Send it into a high-pressure reactor, and conduct a hydrothermal reaction under the conditions of 10Mpa and 240°C for 10 hours; send the sediment to a high-speed centrifuge washing equipment through a pipeline for repeated filtration for 3 times, remove potassium chloride ions and residual impurities, and obtain crystallization Pure tetragonal yttrium-zirconium composite nano-ceramic powder with high density.
[0034] The particle size of the nano-ceramic powder obtained in this embodiment is between 20nm and 30nm.
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