Study on Structrures and Properties of Mo Products Doped with Rare Earth

Mo Products(powders and blank)doped with rare earth were prepared using liquid-liquid doping technique.The effects of variety and concentration of rare earth dopants on structrures and properties of the Mo products have been investigated.The results showed the effects of changing variety and concentration of rare earth dopants on size and morphology of Mo-La-Y composite powders were not distinct.On the whole,the particle size of Mo blank base decreases with the increasing of rare earth dopant,the refining effect is more obvious in two rare earth elements than in a single element under the same doping concentration;the hardness of Mo blank can be improved when increasing the dopant of rare earth or adopting multi-doped with two rare earth elements.