In this paper,traditional milling and discharge plasma-assisted milling are employed to synthesize aluminum nitride(AlN) powder at nanometer scale by milling the mixture of aluminum and lithium hydroxide monohydrate...In this paper,traditional milling and discharge plasma-assisted milling are employed to synthesize aluminum nitride(AlN) powder at nanometer scale by milling the mixture of aluminum and lithium hydroxide monohydrate.AlN powders can be generated in traditional milling and plasma-assisted milling in an hour milling time.Differential thermal analysis curves show that the reaction temperature of the powders treated by plasma-assisted milling is lower than that of traditional milling.These results indicate that plasma-assisted milling has higher efficiency in the synthesis of AlN,getting smaller crystallite size and activating powder.Moreover,an optical emission spectrum is employed to demonstrate the active species in plasma.The different formation process of AlN in the two-milling process,and the promotion effects of plasma in the milling process are discussed.展开更多
基金supported by National Natural Science Foundation of China(Grant Nos.51177008,51407022,51677019)the National Key Research and Development Program of China(Grant No.2016YFC0207200)
文摘In this paper,traditional milling and discharge plasma-assisted milling are employed to synthesize aluminum nitride(AlN) powder at nanometer scale by milling the mixture of aluminum and lithium hydroxide monohydrate.AlN powders can be generated in traditional milling and plasma-assisted milling in an hour milling time.Differential thermal analysis curves show that the reaction temperature of the powders treated by plasma-assisted milling is lower than that of traditional milling.These results indicate that plasma-assisted milling has higher efficiency in the synthesis of AlN,getting smaller crystallite size and activating powder.Moreover,an optical emission spectrum is employed to demonstrate the active species in plasma.The different formation process of AlN in the two-milling process,and the promotion effects of plasma in the milling process are discussed.