Huo Hui-qi
2014
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Journal
Journal of Synthetic Crystals
Abstract
With aluminum nitrate nonahydrate, boric acid, glycine, carbamide as raw materials,nanometer aluminum borate was prepared by solution combustion method. The effects of combustion agent type,calcinations time,calcinations emperature,raw material ratio and other parameters on the product phase,product form,particle were investigated by TG-DTA,XRD, SEM as test methods for the characterizations of the precursor and the final product. The results show that nanometer aluminum borate with better crystallinity and regular shape is prepared under conditions of glycine as combustion agent,n( aluminum nitrate nonahydrate) ∶ n( glycine) = 3∶ 5,calcinations time 4 h,calcinations temperature 1200℃. Nano-sized Al18B4O33 powders which was uniform grain size with the average of 80 nm can be obtained.