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High-entropy rare earth zirconate nanostructure agglomerated sphere and preparation method thereof
The invention discloses a high-entropy rare earth zirconate nanostructure agglomerated sphere and a preparation method thereof. The invention relates to the technical field of high-temperature thermal protection ceramic materials. The method comprises the following steps: uniformly stirring scandium salt, erbium salt, thulium salt, ytterbium salt, lutetium salt and zirconium oxychloride to obtain a mixed solution; gradually adding a precipitator into the mixed solution, standing and aging to obtain hydroxide colloid; performing cross flow washing; carrying out azeotropic distillation: mixing with a dispersing agent, and carrying out distillation and carbonization treatment to obtain powder; performing high-temperature calcination to obtain tetragonal-phase nano powder; carrying out jet milling treatment on the tetragonal-phase nano powder; preparing the colloid into micron-sized agglomerated spheres by adopting a spray drying technology; performing screening; removing moisture in the balls; and carrying out plasma secondary spheroidizing to obtain the sphere with the size range meeting the requirement. According to the invention, a coprecipitation method is combined with membrane separation, azeotropic distillation and jet mill crushing technologies, so that powder with better dispersity is obtained, and nano powder is made into nano-structure agglomerated balls.
本发明公开了一种高熵稀土锆酸盐纳米结构团聚球体及其制备方法。本发明涉及高温热防护陶瓷材料技术领域。本发明包括如下步骤：将钪盐、铒盐、铥盐、镱盐、镥盐和氯氧化锆搅拌均匀后得到混合溶液；将沉淀剂逐步加入到混合溶液中静置老化后得到氢氧化物胶体；错流洗涤；共沸蒸馏：与分散剂进行混合进行蒸馏和碳化处理，获得粉体；高温煅烧得四方相纳米粉末；四方相纳米粉体经气流磨处理；采用喷雾干燥技术将该胶体制备成微米级的团聚球体；筛分；去除球体中的水分；等离子二次球化得尺寸范围符合要求的球体。本发明通过共沉淀法结合膜分离、共沸蒸馏和气流磨粉碎技术，获得分散性较好的粉末，把纳米粉末做成纳米结构团聚球。
High-entropy rare earth zirconate nanostructure agglomerated sphere and preparation method thereof
The invention discloses a high-entropy rare earth zirconate nanostructure agglomerated sphere and a preparation method thereof. The invention relates to the technical field of high-temperature thermal protection ceramic materials. The method comprises the following steps: uniformly stirring scandium salt, erbium salt, thulium salt, ytterbium salt, lutetium salt and zirconium oxychloride to obtain a mixed solution; gradually adding a precipitator into the mixed solution, standing and aging to obtain hydroxide colloid; performing cross flow washing; carrying out azeotropic distillation: mixing with a dispersing agent, and carrying out distillation and carbonization treatment to obtain powder; performing high-temperature calcination to obtain tetragonal-phase nano powder; carrying out jet milling treatment on the tetragonal-phase nano powder; preparing the colloid into micron-sized agglomerated spheres by adopting a spray drying technology; performing screening; removing moisture in the balls; and carrying out plasma secondary spheroidizing to obtain the sphere with the size range meeting the requirement. According to the invention, a coprecipitation method is combined with membrane separation, azeotropic distillation and jet mill crushing technologies, so that powder with better dispersity is obtained, and nano powder is made into nano-structure agglomerated balls.
本发明公开了一种高熵稀土锆酸盐纳米结构团聚球体及其制备方法。本发明涉及高温热防护陶瓷材料技术领域。本发明包括如下步骤：将钪盐、铒盐、铥盐、镱盐、镥盐和氯氧化锆搅拌均匀后得到混合溶液；将沉淀剂逐步加入到混合溶液中静置老化后得到氢氧化物胶体；错流洗涤；共沸蒸馏：与分散剂进行混合进行蒸馏和碳化处理，获得粉体；高温煅烧得四方相纳米粉末；四方相纳米粉体经气流磨处理；采用喷雾干燥技术将该胶体制备成微米级的团聚球体；筛分；去除球体中的水分；等离子二次球化得尺寸范围符合要求的球体。本发明通过共沉淀法结合膜分离、共沸蒸馏和气流磨粉碎技术，获得分散性较好的粉末，把纳米粉末做成纳米结构团聚球。
High-entropy rare earth zirconate nanostructure agglomerated sphere and preparation method thereof
一种高熵稀土锆酸盐纳米结构团聚球体及其制备方法
LI KAIYUN (author) / JIN HONGYUN (author) / HONG JIANHE (author) / ZHANG SHENG (author) / YANG JING (author) / WEI BENBEN (author) / WANG XUAN (author) / YANG BO (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
Thermal spraying spherical high-entropy rare earth zirconate powder and preparation method thereof
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