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- W2364676475 abstract "The Sm_2O_3-doped CeO_2(SDC)nano-powders were prepared by co-precipitation and spray drying method using Ce(NO_3)_3·6H_2O and Sm_2O_3 as raw materials.The crystalline structure and phase purity of the SDC powders were characterized by XRD,and the particle size and shape were observed by SEM.The influence of sintering process on the particle size was discussed,and the grain growth dynamics in sintering process was studied.The results showed that the size of crystallite kept steadily with increasing sintering time blew 400℃.Between 400 and 800℃,the size of crystallite increased rapidly with increasuing sintering time.But the influence of sintering time on the particle size diminishes gradually with further increasing the sintering time.That was constant at 1000℃.According to grain growth exponent,the main factors of the growth mechanism were interfacial reaction,nanostructural effects and diffusion mass transfer,and diffusion mass transfer,respectively,at below 300-400℃,about 500℃ and 600-800℃." @default.
- W2364676475 created "2016-06-24" @default.
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- W2364676475 date "2010-01-01" @default.
- W2364676475 modified "2023-09-23" @default.
- W2364676475 title "Preparation and Grain Growth Dynamics of Sm_2O_3 Doped CeO_2 Nanocrystallites" @default.
- W2364676475 hasPublicationYear "2010" @default.
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