Phase Composition Analysis of TiN-AI_2O_3Synthesized from Aluminum-containing Dross and Rutile by Aluminothermic Reductionnitridation Method

查看全文 作　　者：LIU [1]Haitao;MIN [1]Xin;JI [1]Haipeng;XU [1]Youguo;FANG [1]Minghao;LIU [1]Yangai;HUANG [1]Zhaohui

机构地区：[1]School of Materials Science and Technology,China University of Geosciences(Beijing)

出　　处：《China's Refractories》索引2014年第23卷第3期,共4页

摘　　要：TiN- Al2O3 composite powder was prepared by aluminothermic reduction- nitridation method with starting materials of aluminum-containing dross and rutile,and metallic aluminum in the aluminum-containing dross as reducer. The influences of synthesis temperature(600-1 400 ℃) and aluminum-containing dross addition(20% lower than theoretical value,theoretical value,20% higher than theoretical value,and 50% higher than theoretical value) on phase compositions and microstructure of the composites were investigated,and the reaction mechanism was analyzed. The results show that(1) TiN- Al2O3 composite powder can be synthesized under the experimental conditions; the main phases are TiN,α-Al2O3,a little bytownite,and MgAl2O4;(2)enhancing synthesis temperature or increasing aluminumcontaining dross addition favors the reaction of aluminothermic reduction- nitridation;(3) in the synthesized products,α-Al2O3 is platy or columnar; TiN is sub-micron granular,which reinforces and toughens the composite. 关键词：金红石型含铝组成分析锡渣合成温度复合粉末反应机理镁铝尖晶石

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Phase Composition Analysis of TiN-AI_2O_3Synthesized from Aluminum-containing Dross and Rutile by Aluminothermic Reductionnitridation Method

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