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Preparation method for synthesizing ZrO2 coated ZrB2 particle composite powder by sol-gel method
The invention relates to a preparation method for synthesizing ZrO2 coated ZrB2 particle composite powder by a sol-gel method. The preparation method comprises the following steps: weighing zirconium diboride ZrB2 and zirconium tetrachloride ZrCl4 according to the mass ratio of zirconium oxide to zirconium diboride; the preparation method comprises the following steps: dissolving zirconium diboride ZrB2 in absolute ethyl alcohol to form a uniform solution for ultrasonic treatment, and then dissolving zirconium tetrachloride ZrCl4 in the solution; adding a certain amount of ammonia water and water under the condition of continuous stirring, adjusting the pH value, and heating and stirring to form sol; the sol is placed in an air dry oven to be fully dried, heat treatment is conducted, and the ZrO2-coated ZrB2 particle composite powder is obtained. Compared with the prior art, the process has the advantages of simplicity in operation, short preparation period, good uniformity, capability of preparing nano-scale powder and the like; compared with uncoated pure ultrahigh-temperature ceramic oxide, the prepared powder with the coating structure has higher heat conductivity, and the ablation resistance of the coating is improved.
本发明涉及一种溶胶凝胶法合成ZrO2包覆ZrB2颗粒复合粉体的制备方法，根据氧化锆与二硼化锆质量比称取二硼化锆ZrB2和四氯化锆ZrCl4。将二硼化锆ZrB2溶于无水乙醇中形成均匀溶液超声，再将四氯化锆ZrCl4溶于上述溶液中。在不断搅拌的情况下加入一定量的氨水和水，调节PH值在加热搅拌形成溶胶；将上述溶胶置于鼓风干燥箱中充分干燥，热处理获得ZrO2包覆ZrB2颗粒复合粉体。与现有技术相比，本工艺具有操作简单，制备周期短、均匀性好和可制备纳米尺度粉体等优点；制备出的包覆结构粉体相较于未包覆的纯超高温陶瓷氧化物有较高的热导率，有利于提高涂层抗烧蚀性能。
Preparation method for synthesizing ZrO2 coated ZrB2 particle composite powder by sol-gel method
The invention relates to a preparation method for synthesizing ZrO2 coated ZrB2 particle composite powder by a sol-gel method. The preparation method comprises the following steps: weighing zirconium diboride ZrB2 and zirconium tetrachloride ZrCl4 according to the mass ratio of zirconium oxide to zirconium diboride; the preparation method comprises the following steps: dissolving zirconium diboride ZrB2 in absolute ethyl alcohol to form a uniform solution for ultrasonic treatment, and then dissolving zirconium tetrachloride ZrCl4 in the solution; adding a certain amount of ammonia water and water under the condition of continuous stirring, adjusting the pH value, and heating and stirring to form sol; the sol is placed in an air dry oven to be fully dried, heat treatment is conducted, and the ZrO2-coated ZrB2 particle composite powder is obtained. Compared with the prior art, the process has the advantages of simplicity in operation, short preparation period, good uniformity, capability of preparing nano-scale powder and the like; compared with uncoated pure ultrahigh-temperature ceramic oxide, the prepared powder with the coating structure has higher heat conductivity, and the ablation resistance of the coating is improved.
本发明涉及一种溶胶凝胶法合成ZrO2包覆ZrB2颗粒复合粉体的制备方法，根据氧化锆与二硼化锆质量比称取二硼化锆ZrB2和四氯化锆ZrCl4。将二硼化锆ZrB2溶于无水乙醇中形成均匀溶液超声，再将四氯化锆ZrCl4溶于上述溶液中。在不断搅拌的情况下加入一定量的氨水和水，调节PH值在加热搅拌形成溶胶；将上述溶胶置于鼓风干燥箱中充分干燥，热处理获得ZrO2包覆ZrB2颗粒复合粉体。与现有技术相比，本工艺具有操作简单，制备周期短、均匀性好和可制备纳米尺度粉体等优点；制备出的包覆结构粉体相较于未包覆的纯超高温陶瓷氧化物有较高的热导率，有利于提高涂层抗烧蚀性能。
Preparation method for synthesizing ZrO2 coated ZrB2 particle composite powder by sol-gel method
一种溶胶凝胶法合成ZrO2包覆ZrB2颗粒复合粉体的制备方法
LI HEJUN (author) / YU YULAN (author) / JIA YUJUN (author) / FENG GUANGHUI (author)
2023-05-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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