METHOD OF PREPARING CERAMIC POWDERS USING AMMONIUM OXALATE

摘要

Wet-chemical methods involving the use of water-soluble hydrolytically st able metal-ion chelate precursors and an ammonium oxalate precipitant can be used in a coprecipitation procedure for the preparation of ceramic powders. Both the precursor solution and the ammonium oxalate precipitant solution a re at neutral or near-neutral pH. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.