According to the information of the China National Intellectual Property Administration, Henan Hongcheng New Material Technology Co., Ltd. applied for a patent entitled kinds of highly sintered activated alumina ceramic powders and their preparation methods, a preparation method of alumina ceramics, with the publication number of CN 119100764 A and the application date of September 2024.

The present invention belongs to the field of ceramic material technology, and specifically relates to a high sintering activated alumina ceramic powder and its preparation method, as well as a preparation method of alumina ceramics. Using weak acid to modify alumina ceramic powder can slightly corrode the surface of alumina, increasing its activity and specific surface area, facilitating contact with more surfactants during the secondary modification process and improving the modification effect; Perform a second modification by treating the alumina powder with surfactants to increase its activity while changing its compatibility and dispersibility properties, so that it does not agglomerate in hydrothermal reactions, resulting in a uniform powder and improving its sintering activity; The purpose of continuing hydrothermal treatment is to modify the morphology of the formed alumina ceramic powder particles using hydrothermal method, as the surface of the alumina powder becomes rough and not smooth after a modification treatment. This results in a regular surface morphology and high sintering activity of the alumina ceramic powder