Effect of dopant content on microstructure and properties of Si-Al-K doped molybdenum

摘要：

The effect of aluminum,potassium and silicon (AKS) content on the high-temperature properties and microstructure of molybdenum powder,sintering product and fabricated wires were studied.The molybdenum powder was produced firstly by reduction of molybdenum oxide which is doped with K2SiO3 and Al(NO3)3·9H2O.Then doped molybdenum powder was cold pressed into cylindrical compact with diameter of 17 mm,and sintered in induction furnace.The microstructure of molybdenum ingots was examined by transmission electron microscopy.The results show found that the doped elements form non-crystalline phase and distribute along the interface of Mo,thus inhibit the grain growth of Mo.Finally,the sintered Mo was drawn into wires with a diameter of 0.70 mm.The formed non-crystalline particles are changed into row of fine particle during the drawing process.

关键词： doped molybdenum wire drawing microstructure

作者: LI Da-cheng ZHOU Zhang-jian PU Chun-yang

作者单位: Technology Center,Jinduicheng Molybdenum Industry Co.,Xi’an 710068,China Laboratory of Special Ceramic and Powder Metallurgy,University of Science and Technology Beijing,Bei

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）