| 摘要 |
A La1-xSrxCr1-yMnyO3 ceramic oxide gel obtainable by the process comprising the steps of: (a) providing a colloidal solution of polyhydroxy organic chelating agents selected from the group consisting of ethylene glycol and citric acid and metal salts selected from the group consisting of lanthanum, strontium, chromium, and manganese, each salt being present in an amount necessary to provide the stoichiometric amount of metal ions required in the ceramic oxide gel; (b) heating the colloidal solution to hydrolyze and polymerize the metal ions in the solution to a mixed metal oxide precursor of the ceramic oxide gel; and (c) adding organic acid, water or both to the precursor of the ceramic oxide gel to peptize the metal ions; and (d) heating the peptized precursor to evaporate solvent to form a thick, viscous, flexible, ductile, handleable gel that can be cast, extruded, or drawn; wherein x and y are independently 0 or 1.
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