Method for preparing alumina-based solid solution ceramic powder by using aluminum oxygen combustion synthesis water mist process

A method for preparing alumina-based solid solution ceramic powder by an aluminum-oxygen combustion synthesis and water spraying process, characterized in that, the method is carried out according to the following steps:

• drying raw materials and then mixing uniformly to obtain a mixture;
• loading the mixture into a high-pressure reactor, starting ignition in an oxygen-containing atmosphere, and carrying out high-temperature combustion synthesis reaction;
• maintaining heat preservation for 1 s-60 s after a high-temperature melt is formed;
• then turning on a nozzle, spraying out the high-temperature melt through the nozzle to carry out liquid phase rapid cooling so that an alumina-based solid solution ceramic powder is obtained,
• the raw materials are aluminum powder and diluent, and the mass fraction of the aluminum powder in the mixture is 10%-40%, and the mass fraction of the diluent is 60%-90%.