Preparation method of rare-earth copper oxide ceramic powder body

Application Number: 00110556
Application Date: 2000.06.21
Publication Number: 1328980
Publication Date: 2002.01.02
Priority Information:
International: C04B35/45;C04B35/622
Applicant(s) Name: Inst. of Metals, Chinese Academy of Sciences
Inventor(s) Name: Zhou Yanchun;Wang Xiaohui
Patent Agency Code: 21002
Patent Agent: zhang chen
Abstract The preparation method of rare earth copper oxide ceramic powder uses the nitrate of correspondent metal as oxidant, uses urea as burning agent and adopts self-spreading combustion process, and is characterized by that the partial acetate can be substituted for nitrate as fire-retardant, the quantity mole ratio range of substituted nitrate is 25-75% and O/F rate range is 0.20-1.00. Said invention can greatly reduce self-spreading combustion temp. in the preparation of ceramic powder, can utilize regulation of urea dosage to accurately control self-spreading combustion temp. and speed so as to greatly raise the controllability of self-spreading combustion reaction and obtain the ceramic powder meeting requirements at lower temp. condition.