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Zirconia ceramic microbead and preparation method thereof
The invention discloses a zirconia ceramic microbead and a preparation method thereof, and belongs to the technical field of ceramic materials, a zirconia ceramic microbead green body with a submillimeter particle size is prepared by using a liquid phase method of gel casting of an acrylamide system, and a sphere core with a proper size is provided for the zirconia ceramic microbead green body; zirconium oxide precursors Zr (OH) 4 and Y (OH) 3 are precipitated on the surface of the zirconium oxide ceramic microbead green body in situ through an in-situ fixing method, and the zirconium oxide ceramic microbead with the core-shell structure is formed through high-temperature calcination. The nano zirconium oxide is high in specific surface energy, large in surface activity and improved in surface sintering performance, so that the surface compactness of the zirconium oxide ceramic microbead is improved, and the wear resistance of the zirconium oxide ceramic microbead is improved.
本发明公开了一种氧化锆陶瓷微珠及其制备方法，属于陶瓷材料技术领域，利用丙烯酰胺体系的凝胶注模的液相方法制备出颗粒尺寸为亚毫米级的氧化锆陶瓷微珠生坯，为本发明提供了尺寸合适的球核；利用原位固定法在氧化锆陶瓷微珠生坯的表面原位沉淀氧化锆前驱体Zr(OH)4和Y(OH)3，经高温煅烧形成具有核壳结构的氧化锆陶瓷微珠。由于纳米氧化锆的比表面能高，表面活性大，表面的烧结性能提高，从而提高了氧化锆陶瓷微珠的表面致密性，导致氧化锆陶瓷微珠耐磨性的提高。
Zirconia ceramic microbead and preparation method thereof
The invention discloses a zirconia ceramic microbead and a preparation method thereof, and belongs to the technical field of ceramic materials, a zirconia ceramic microbead green body with a submillimeter particle size is prepared by using a liquid phase method of gel casting of an acrylamide system, and a sphere core with a proper size is provided for the zirconia ceramic microbead green body; zirconium oxide precursors Zr (OH) 4 and Y (OH) 3 are precipitated on the surface of the zirconium oxide ceramic microbead green body in situ through an in-situ fixing method, and the zirconium oxide ceramic microbead with the core-shell structure is formed through high-temperature calcination. The nano zirconium oxide is high in specific surface energy, large in surface activity and improved in surface sintering performance, so that the surface compactness of the zirconium oxide ceramic microbead is improved, and the wear resistance of the zirconium oxide ceramic microbead is improved.
本发明公开了一种氧化锆陶瓷微珠及其制备方法，属于陶瓷材料技术领域，利用丙烯酰胺体系的凝胶注模的液相方法制备出颗粒尺寸为亚毫米级的氧化锆陶瓷微珠生坯，为本发明提供了尺寸合适的球核；利用原位固定法在氧化锆陶瓷微珠生坯的表面原位沉淀氧化锆前驱体Zr(OH)4和Y(OH)3，经高温煅烧形成具有核壳结构的氧化锆陶瓷微珠。由于纳米氧化锆的比表面能高，表面活性大，表面的烧结性能提高，从而提高了氧化锆陶瓷微珠的表面致密性，导致氧化锆陶瓷微珠耐磨性的提高。
Zirconia ceramic microbead and preparation method thereof
一种氧化锆陶瓷微珠及其制备方法
SHI JIJUN (author) / SUN GUOLIANG (author)
2023-09-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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