Microstructure Characteristics of Ultra-fine ZrO2-Y203 Ceramic Powders*
نویسندگان
چکیده
Yttria-doped zirconia powders" with an extremely small crystallite size (8 nm) and a narrow size distribution have been prepared by gel precipitation methods. Precipitation of an alkoxide solution in water ("alkoxide" synthesis) results in weaker agglomerates when compared with a precipitation of a metal chloride solution in ammonia ("chloride" synthesis). Both types of agglomerate are fractured during isostatic compaction. The "alkoxide" agglomerates consist of strong small aggregates (15-20 nm) while within the "chloride" agglomerates no, or only a few, aggregates are present.
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