The Effect of Precipitants on Co-Precipitation Synthesis of MgO-ZrO₂ Powders

Abstract:

MgO-ZrO₂ nanosized powders have been synthesized via the co-precipitation route using ammonia, ammonium carbonate and ammonium hydrogen carbonate as precipitant, respectively. The three different powders were characterized by TG-DSC, XRD and SEM. And the sinterability behavior of each powder also has been investigated. The results indicated that uniformly dispersed and much looser MgO-ZrO₂ nanosized powders could be obtained when the ammonium carbonate, especially the ammonium hydrogen carbonate were used. When ammonia was used, some agglomeration could be observed. The crystalline grain size of the three powders is closed to each other. Due to the existing of agglomeration, the sintered samples prepared by using ammonia as precipitant exhibited poorer sinterability than that of using carbonates as precipitant.

• Periodical: Advanced Materials Research (Volume 788)
• Pages: 132-135
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.788.132
• Online since: September 2013
• Authors: Yuan Jun Huang, Ting Liu, Min Liu
• Keywords: Co-Precipitation, MgO-ZrO₂, Precipitant, Sintering

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