Synthesis of aluminum nitride in a coke – calcium reduction bed using nitrogen in air
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第9期
论文作者：Ehsan Noorizadeh Dehkordi H.R.Samim Banihashemi R.Naghizadeh H.R.Rezaie M.Goodarzi
文章页码：972 - 976
摘 要：An experimental study on the heating of a mixture of aluminum and lithium hydroxide（LiOH） powders in a reductive bed under air atmosphere is reported. The formation of aluminum nitride（AlN） during this process was the focus of this study. The formation of Al N was achieved using LiOH as an additive and heating the sample in a resistance furnace in a specially designed double crucible within a bed of a mixture of coke and filamentous calcium. The temperature range of the reaction was between 700°C and 1100°C. The optimum temperature of 1100°C and the optimum Li OH amount（5wt%） required to achieve maximum yield were determined by powder X-ray diffraction（XRD） analysis. Scanning electron microscopy（SEM） micrographs clearly indicated the transformation of grain structures from rods（700°C） to cauliflower shapes（1100°C）.
Ehsan Noorizadeh Dehkordi，H.R.Samim Banihashemi，R.Naghizadeh，H.R.Rezaie，M.Goodarzi
School of Metallurgy & Materials Engineering, Iran University of Science & Technology
摘 要：An experimental study on the heating of a mixture of aluminum and lithium hydroxide（LiOH） powders in a reductive bed under air atmosphere is reported. The formation of aluminum nitride（AlN） during this process was the focus of this study. The formation of Al N was achieved using LiOH as an additive and heating the sample in a resistance furnace in a specially designed double crucible within a bed of a mixture of coke and filamentous calcium. The temperature range of the reaction was between 700°C and 1100°C. The optimum temperature of 1100°C and the optimum Li OH amount（5wt%） required to achieve maximum yield were determined by powder X-ray diffraction（XRD） analysis. Scanning electron microscopy（SEM） micrographs clearly indicated the transformation of grain structures from rods（700°C） to cauliflower shapes（1100°C）.
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