High-density zirconium tungstate solid solution ceramic and preparation method thereof
A technology of zirconium tungstate and solid solution, which is applied in the field of high-density zirconium tungstate solid solution ceramics and its preparation, can solve the problems of inability to prepare solid solution ceramic materials, achieve high density, overcome energy consumption, and short sintering time.
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Embodiment 1
[0041] In this example, ZrW is prepared by the combined preparation method of liquid phase method and spark plasma sintering method 2 O 8 ceramics.
[0042] Step S1: First put 10.4g ZrOCl 2 ·8H 2 The O powder was dissolved in a mixed solvent of sec-butanol and acetic acid, and the reaction was stirred. Then in a dry nitrogen atmosphere, 25 g of WCl 6 Dissolve in 250 mL of absolute ethanol and stir well, then mix the prepared zirconium solution and tungsten solution and stir at room temperature for 3 days. Then, the mixed solvent that is stirred evenly is heated in an oil bath at 80-90° C., and powder particles are obtained after the solvent is completely evaporated.
[0043] Step S2: Next, put about 2.0 g of the powder particles obtained in the above step into a hydrothermal reaction autoclave, add 60 mL of distilled water, and stir and heat at 180° C. for 18 hours. Finally, the solvent and particles obtained after the hydrothermal reaction were completed were filtered, ...
Embodiment 2
[0046] In this example, the combined preparation method of the liquid phase method and the spark plasma sintering method is used to prepare the molybdenum-doped zirconium tungstate ZrW 1.9 Mo 0.1 O 8 ceramics.
[0047] Step S1: First put 10.4g ZrOCl 2 ·8H 2 The O powder was dissolved in a mixed solvent of sec-butanol and acetic acid, and the reaction was stirred. Then in a dry nitrogen atmosphere, 24.12 g of WCl 6 and 0.88g MoCl 5 Dissolve in 250 mL of absolute ethanol and stir evenly, then mix the prepared zirconium solution and tungsten-molybdenum solution and stir at room temperature for 3 days. Then, the mixed solvent that is stirred evenly is heated in an oil bath at 80-90° C., and powder particles are obtained after the solvent is completely evaporated.
[0048] Step S2: Next, put about 2.0 g of the powder particles obtained in the above step into a hydrothermal reaction autoclave, add 60 mL of distilled water, and stir and heat at 180° C. for 18 hours. Finally, ...
Embodiment 3
[0051] In this example, the combined preparation method of the liquid phase method and the spark plasma sintering method is used to prepare the molybdenum-doped zirconium tungstate ZrW 1.8 Mo 0.2 O 8 ceramics.
[0052] Step S1: First put 10.4g ZrOCl 2 ·8H 2 The O powder was dissolved in a mixed solvent of sec-butanol and acetic acid, and the reaction was stirred. Then in a dry nitrogen atmosphere, 23.22 g of WCl 6 and 1.78g MoCl 5 Dissolve in 250 mL of absolute ethanol and stir evenly, then mix the prepared zirconium solution and tungsten-molybdenum solution and stir at room temperature for 3 days. Then, the mixed solvent that is stirred evenly is heated in an oil bath at 80-90° C., and powder particles are obtained after the solvent is completely evaporated.
[0053] Step S2: Next, put about 2.0 g of the powder particles obtained in the above step into a hydrothermal reaction autoclave, add 60 mL of distilled water, and stir and heat at 180° C. for 18 hours. Finally, ...
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