球磨参数对燃烧合成Ti_3AlC_2金属陶瓷的影响  

Effects of Ball Milling Parameters on Combustion Synthesis of Ti_3AlC_2 Cermet

作　　者：吴明亮[1,2] 陈秀娟[1,2] 吴爱梅[1] 曹立宏[1] 李建伟[2] 

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050 [2]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《新技术新工艺》2009年第9期109-111,共3页New Technology & New Process

摘　　要：以Ti、Al和C粉末为原料,研究了球磨转速、球料比对燃烧合成Ti3AlC2的影响。研究结果表明,不同的球磨转速、球料比对Ti-Al-C体系燃烧合成Ti3AlC2金属陶瓷组织、结构有较大影响。球磨转速较高时,混合粉料具有更高的活化能,并完全参与反应生成Ti3AlC2。适当的球料比可有效减小粉末粒度,有助于燃烧合成出片层结构更为细小的Ti3AlC2金属陶瓷。In this paper,effects ot the milling speeding and the mass ratio between the steel balls and elemental powder on combustion synthesis Ti3 AlC2 were studied by using Ti, Al and C powders as raw materials. The results show that different milling speeding and mass ratio have relatively big influence on the structure of Ti-- Al-- C combustion synthesis of Ti3AlC2 cermet. When the milling speed is higher, the mixed powder has higher activation energy, and all the powder can translate into Ti3 AlC2 through the reaction. Meanwhile the proper ball-powder mass ratio can reduce the milled powders size effectively,and is help to the combustion synthesis of the Ti3 AlC2 cermet with more tiny lamellar structure.

关 键 词：TI3ALC2 球料比 球磨转速 燃烧合成 

分 类 号：TM286[一般工业技术—材料科学与工程]